Technical Field
[0001] The present invention relates to a process of treating a carpet using a liquid composition.
More particularly, the present invention relates to a process of treating a carpet
comprising the application of a liquid composition onto said carpet using an electrical
spraying device whereby said composition provides a mucous membranes non irritation
benefit.
Background of the Invention
[0002] Carpets produced from synthetic or natural fibers and mixtures thereof are commonly
used in residential and commercial applications as a floor covering. Various types
of fibers can be used in making carpets such as polyamide fibers, polyester fibers
as well as wool, cotton or even silk in the case of rugs.
[0003] However, carpets irrespective of whether they are made from natural or synthetic
fibers are all prone to soiling and staining when contacted with many household items.
Food, grease, oils, beverages in particular such as coffee, tea and soft drinks especially
those containing acidic dyes can cause unsightly, often dark stains on carpets. Also
fibers may become soiled as a result of dirt particles, clay, dust, i.e., particulate
soils in general, coming into contact with and adhering to the fibers of the carpet.
These latter soils often appear in the form of a diffuse layer of soils rather than
in the form of spots and tend to accumulate particularly in the so called "high traffic
areas", such as near doors, as a result of intensive use of the carpets in such areas.
[0004] Liquid compositions for treating carpets are already known in the art. For example
as disclosed in WO 95/04127. To improve the cleaning performance of said liquid compositions,
surfactants are added to carpet cleaning compositions, as for example disclosed in
EP-A-0 794 244.
[0005] Liquid compositions for treating carpets may by delivered onto a carpet in a variety
of ways using, e.g., manually operated spraying devices such as hand activated trigger
spray devices, pressurised aerosol spray dispensers such as pressurised aerosol cans,
electrically operated spraying devices and the like. Large surfaces, such as carpets,
are however difficult to treat with manually operated spraying devices or pressurised
aerosol spray dispensers. The large surface area to be treated demands the application
of a high amount of the liquid composition. Pressurised aerosol spray dispensers carry
only a limited amount of product and show negative environmental effects. Manually
operated spraying devices require repeated manual action of the device to apply the
composition to the large surface. This is laborious for the user and results in an
uneven distribution of the liquid composition over the treated surface. Therefore,
electrically operated spraying devices are a preferred application form of liquid
carpet treating compositions. Electrically operated spraying devices for use in carpet
treating applications are known in the art, as for example, disclosed in pending patent
application PCT/US99/07347.
[0006] However, liquid carpet treating compositions comprising a surfactant applied onto
a carpet using an electrically operated spraying device can cause irritation of the
mucous membranes of the user of said spraying device or other persons standing close
by to where the composition is sprayed onto the carpet. During the application of
the liquid composition, the electrically operated spraying device forms a fine spray
of droplets of said composition. This fine spray of droplets comprises droplets that
are small enough to form an aerosol or a mist of droplets. This aerosol is at least
partially suspended in the air for a limited period of time and thus may be inhaled
by the user or those in close proximity. Where the composition inhaled comprises a
surfactant, it has been found that such compositions may cause irritation of mucous
membranes, for example in the nose, mouth, throat or eyes.
[0007] Thus, the objective of the present invention is to provide a process of treating
a carpet comprising the application of a liquid composition onto the carpet using
an electrical spraying device whereby the user or those in close proximity are not
affected by irritation of mucous membranes.
[0008] Furthermore, it is an objective of the present invention to provide a process of
treating a carpet which provides excellent overall cleaning performance on various
types of stains including particulate stains, greasy stains, bleachable stains and/or
enzymatic stains.
[0009] It has now been found that the above objectives can be met by a process of treating
a carpet according to the present invention.
[0010] An advantage of the process of treating carpets according to the present invention
is that said process provides a safe, easy and fast way for the user to clean a carpet,
whilst also providing excellent overall cleaning performance.
[0011] More advantageously, the process of treating carpets according to the present invention
provides excellent cleaning performance, when both used to clean the whole carpet
or localized carpet stains.
[0012] Advantageously, excellent cleaning performance is obtained on different types of
stains and soils, including enzymatic stains as well as particulate stains and/or
greasy stains, especially in highly soiled, so called "high traffic areas".
[0013] A further advantage of the present invention is that the process of treating carpets
herein is applicable to all carpet types, especially delicate natural fibers. The
present invention is also suitable to be used to clean hard wearing textiles and fabrics,
e.g., upholstery, rugs, curtains.
[0014] Yet another advantage of the process of treating carpets and of the compositions
of the present invention is that they may be applied directly onto the carpet without
causing damage. In particular, the compositions used in the present process are safe
to all known carpet dyes, even well known particularly sensitive natural dyes.
Background art
[0015] Certain surfactants are known to have a low skin, eye and/or mucous membrane irritation
benefit. For example, EP-A-0 396 340, JP-A-07197079 and GB 2,236,321 disclose compositions
comprising sulfosuccinate surfactants wherein said compositions show a low skin, eye
and/or mucous membrane irritation benefit. However, no spraying applications are disclosed.
[0016] DE-OS-21 16 147 discloses a sprayable carpet cleaning shampoo comprising a specific
sulfosuccinamate surfactant, a sodium lauryl sulfate and a specific sulfosuccinate
surfactant. Furthermore, said carpet cleaning shampoo provides a mucous membrane non
irritation benefit due to the presence of the surfactant system. However, carpet cleaning
compositions being applied onto the carpet using an electrical spraying device are
not disclosed.
Summary of the Invention
[0017] The present invention encompasses a process of treating a carpet comprising the application
of a liquid composition onto said carpet using an electrical spraying device wherein
said composition comprises a nonirritating anionic surfactant rated nonirritating
to mucous membranes as measured at a 5% active surfactant solution using the Draize
test method.
[0018] In a preferred embodiment said composition further comprises a peroxygen bleach.
Detailed Description of the Invention
Process of treating a carpet
[0019] The present invention encompasses a process of treating a carpet comprising the application
of a liquid composition onto said carpet using an electrical spraying device wherein
said composition comprises a nonirritating anionic surfactant as described herein.
[0020] In a preferred embodiment of the present application, said process comprises the
steps of applying said composition to the surface of the carpet and leaving said composition
to substantially dry on the carpet. More preferably said process of treating a carpet
further comprises the step of removing said composition, even more preferably said
process of treating a carpet further comprises the step of removing said composition
in combination with soil particles.
[0021] In another embodiment of the present application, said process comprises the steps
of applying said composition to parts, preferably heavily soiled parts, of the carpet,
mechanically agitating the composition with an implement into the soiled parts of
the carpet layer and leaving said composition to substantially dry on the carpet.
More preferably said process of treating a carpet further comprises the step of removing
said composition, even more preferably said process of treating a carpet further comprises
the step of removing said composition in combination with soil particles. Any number
of implements may be used to provide said mechanical agitation, including brushes,
paper towels, a human finger and the like. Said mechanical agitation allows the liquid
composition to better penetrate into the carpet fibers and thus improves the chemical
cleaning action of said composition. In addition, said contact loosens the dirt particles
forming the stain.
[0022] In the process according to the present invention, the composition is applied onto
the carpet using an electrically operated spraying device. Said spraying device is
preferably a container that has at least one aperture through which the composition
is dispensed to produce a spray of droplets.
[0023] Such an electrically operated spraying devices may comprise a means for delivering
the composition by means of a pump ("pump spray dispenser"). Said electrically operated
spraying devices are particularly preferable if a large area is to be treated and/or
if a high amount of product has to be applied onto a heavily stained area ("spot")
of the carpet as they facilitate the ease of use by the consumer. Said electrically
operated spraying devices ensure uniform coverage of the area to be treated.
[0024] A preferred electrically operated spraying device herein is a container wherein the
means for delivering the composition comprises an electrically driven pump and a spray
arm. Said spray arm is either extended or extendible and has at least one aperture
so that in operation, the composition is pumped by said electrically driven pump from
the container, through the spray arm to the aperture from which it is dispensed. It
is preferred that the spray arm communicates with the container by means of a flexible
connector. The spray arm may have at least one aperture located along its length.
The spray arm makes it easier to control where the composition is sprayed, thereby
increasing the accuracy with which the composition is applied. The electrically driven
pump may be, for example, a gear pump, an impeller pump, a piston pump, a screw pump,
a peristaltic pump, a diaphragm pump, or any other miniature pump. In a highly preferred
embodiment the electrically driven pump for use herein is a gear pump with a typical
speed between 6000 rpm and 12000 rpm. The electrically driven pump is driven by a
means which typically produces a torque of between 1 and 20 mN.m such as an electric
motor. The electric motor must in turn be provided with a power source. The power
source may be either mains electricity (optionally via transformer), or it may be
a throw-away battery or rechargeable battery. The spray arm may be rigidly extended.
However such a spray arm can be difficult to store, and the spray arm is preferably
extensible either by means of telescopic or foldable configuration.
[0025] In a highly preferred embodiment, the composition is applied onto the carpet in the
form of a spray of droplets having a particle size distribution with a mean diameter
D(v,0.9) of less than 1500 microns, preferably less than 1000 microns, more preferably
of less than 750 microns, even more preferably less than 500 microns, and most preferably
from 350 microns to 10 microns.
[0026] By "mean diameter D(v,0.9) of less than 1500 microns" for a droplet size distribution
it is meant that 90% of the spray of droplets dispensed (expressed in volume unit)
has a droplet diameter of less than 1500 microns. For instance, a D(v,0.9) of less
than 1500 microns indicates that 90% of the total sprayed volume is dispensed with
droplets whose diameter is less than 1500 microns.
[0027] The particle size distribution of a spray of droplets can be determined by following
the procedure detailed herebelow:
[0028] A suitable test equipment is the Malvern Mastersizer S LongBed® with 1000 mm lens
and a maximum particle size range of 3475 microns. The Malvern Mastersizer S LongBed®
provides a 21 cm opening (between its lenses) to accommodate spray flow. In all readings
at the Malvern®, the lens surface must remain free of spray contamination. In the
present setup procedure, the distance from the aperture of the spray dispenser to
the laser was fixed at 8 cm, this to minimize lens contamination. At 8 cm distance,
the spray was directed to the laser beam to place the laser center to the spray cone.
At least three readings have to be made for each composition sprayed to determine
the particle size distribution of the spray of droplets. The electrically operated
spraying devices to be used in the test according to the present invention is preferably
a battery-operated system. If such a battery-operated system is used, a "Full charge
test" is being performed. By "Full charge test" it is meant herein, that the current
was held consistent by connecting the battery-operated spray dispenser to a 3.9 voltage
direct current (vdc) from an external power supply, this ensures a constant spray
force.
[0029] Any container adapted to deliver a spray of droplets as defined herein is suitable
for use herein. Several modifications can be made to the conventional, single aperture,
spray head to ensure that a spray of such droplets as required herein is formed.
[0030] The amount of the compositions for the treating of carpets according to the present
invention applied will depend on the severity of the stain or soil. In the case of
stubborn stains more than one application may be required to ensure complete removal
of the stain.
[0031] The area to be treated by applying the compositions according to the present invention
may be of any size. Indeed, parts of the carpets, a complete section and/or the whole
carpet may be treated with the composition for treating of a carpet according to the
present invention.
[0032] In a preferred embodiment, the composition applied to the carpet is left to substantially
dry. Typically, the composition is left to dry on the carpet for less than 2 hours,
preferably less than 1 hour, more preferably less than 40 minutes, even more preferably
from 1 to 30 minutes and most preferably from 1 to 20 minutes.
[0033] Preferably the step of leaving the composition to dry onto the carpet (drying step)
can either be an "active drying step" or a "passive drying step". By "active drying
step" it is meant herein, performing an additional action to facilitate the evaporation
of the volatile ingredients of the liquid composition as disclosed herein, preferably
by heating the carpet and/or the liquid composition applied thereon, preferably heating
by means of application of hot air, infrared radiation and the like. By "passive drying
step" it is meant herein, evaporation of the volatile ingredients of the liquid composition
as disclosed herein without performing further action.
[0034] By "substantially dry" it is meant herein the stage where at least 40%, preferably
at least 60% of the initial amount of composition dispensed onto the carpet is lost
due to evaporation.
[0035] The step of leaving the composition to dry on the carpet is of course performed under
"normal temperature" and "normal humidity conditions". By "normal temperature conditions"
it is meant herein, from 15° C to 25° C, preferably from 20° C to 25° C. By "normal
humidity conditions" it is meant herein, from 40 %RH (%-relative humidity) to 80 %RH,
preferably from 50 %RH to 65 %RH.
[0036] Indeed, said composition may be left to substantially dry until said composition
combined with dirt forms substantially dry residues. Preferably, said composition
more preferably said substantially dry residues, are then removed from the carpet.
Even more preferably said substantially dry residues are removed mechanically, as
e.g., by brushing, sweeping beating, and/or by vacuum cleaning. This may be carried
out with the help of any commercially available vacuum cleaner like for instance a
standard Hoover® 1300W vacuuming machine.
[0037] According to the present invention the compositions herein may be used for the removal
of stains and soils as well as of odors from carpets or hard wearing textiles and
fabrics, e.g., upholstery. In addition the compositions according to the present invention
may be used to hygienise, disinfect and/or exterminate microinsects from carpets or
hard wearing textiles and fabrics, e.g., upholstery, rugs, curtains.
The composition
[0038] The compositions of the present invention are formulated as liquid compositions.
Preferred compositions herein are aqueous compositions and therefore, preferably comprise
water more preferably in an amount of from 60% to 98%, even more preferably of from
80% to 97% and most preferably 85% to 97% by weight of the total composition.
[0039] The pH of the liquid compositions according to the present invention may typically
be from 1 to 14. In a preferred embodiment, the recommended pH range is from 1 to
10, preferably from pH 2 to 8, more preferably from pH 3 to 7 and most preferably
from pH 3.5 to 6.5. Indeed, it has been surprisingly found that cleaning performance
is further improved at these preferred pH ranges. Also these preferred pH ranges contribute
to the stability of hydrogen peroxide, when present. Accordingly, the compositions
herein may further comprise an acid or base to adjust pH as appropriate.
[0040] Preferred acids herein are organic or inorganic acids or mixtures thereof. Preferred
organic acids are acetic acid, or citric acid or a mixture thereof. Preferred inorganic
acids are sulfuric acid or phosphoric acid or a mixture thereof. A particularly preferred
acid to be used herein is an inorganic acid and most preferred is sulfuric acid.
[0041] Typical levels of such acids, when present, are of from 0.01% to 1.0%, preferably
from 0.05% to 0.8% and more preferably from 0.1% to 0.5% by weight of the total composition.
[0042] The bases to be used herein can be organic or inorganic bases. Suitable bases for
use herein are the caustic alkalis, such as sodium hydroxide, potassium hydroxide
and/or lithium hydroxide, and/or the alkali metal oxides such, as sodium and/or potassium
oxide or mixtures thereof. A preferred base is a caustic alkali, more preferably sodium
hydroxide and/or potassium hydroxide.
[0043] Other suitable bases include ammonia, ammonium carbonate and hydrogen carbonate.
[0044] Typical levels of such bases, when present, are of from 0.01% to 1.0%, preferably
from 0.05% to 0.8% and more preferably from 0.1% to 0.5% by weight of the total composition.
Nonirritating anionic surfactant
[0045] As an essential ingredient the composition according to the present invention comprises
a nonirritating anionic surfactant rated nonirritating to mucous membranes as measured
at a 5% active surfactant solution using the Draize test method.
[0046] Typically, the compositions herein may comprise up to 50%, preferably from 0.1% to
20%, more preferably from 0.5% to 10% and most preferably from 1% to 5% by weight
of the total composition of said nonirritating anionic surfactant.
[0047] Preferably said nonirritating anionic surfactant is a nonirritating anionic surfactant
rated nonirritating to mucous membranes as measured at a 10% active surfactant solution
using the Draize test method. More preferably said nonirritating anionic surfactant
is a nonirritating anionic surfactant rated nonirritating to mucous membranes as measured
at a 20% active surfactant solution using the Draize test method.
[0048] The Draize test method (Draize, J. H., Appraisal of the Safety of Chemicals in Foods,
Drugs and Cosmetics, Assoc. Food Drug Officials, U.S., Topeka, Kansas, 1959) is used
to test ingredients (such as surfactants) in food, drug and/or cosmetic products for
their irritation properties to skin, eyes, mucous membranes and the like.
[0049] A typical test according to the Draize test method involves between six and nine
rabbits. Rabbits are used out of tradition, based on their body size and convenience
of use. A predetermined quantity (e.g., 0.1 ml) and concentration (e.g., a 5% active
surfactant solution, preferably 10% active surfactant solution, more preferably a
20% active surfactant solution) of the test substance is dropped, placed or sprayed
into the lower eyelid of one eye of each rabbit, with the untreated eye acting as
a control. The resulting injuries to the eyes are visually graded by an expert grader
who assesses the level of irritation (e.g., as seen as redness) at intervals of 1,
24, 48, 72, and 168 hours after the exposure and subjectively determines an irritancy
value for the test substance. The evaluation is based on the degree of redness of
the cornea and the inflammation of iris and conjunctiva. The extent of the total irritation
is entered into a numbered scale from 0 to 110, wherein 110 means a high extent of
irritation. A score between 0 and 10 is required to define a chemical substance as
"nonirritating" , i.e., the substance (e.g., the surfactant) is "rated" nonirritating
to mucous membranes. A score between 11 and 25 defines a chemical substance as slightly
irritant. A score between 26 and 56 defines the chemical substance as moderately irritant.
A score between 57 and 110 defines the chemical substance as severely irritant.
[0050] It has now been found that a nonirritating benefit is provided when a nonirritating
anionic surfactant as described herein is used in a composition that is applied onto
a carpet using an electrical spraying device. Said nonirritating benefit is apparent
as a reduction or even absence of irritation of the mucous membranes of the user of
an electrical spraying device or persons in close proximity thereto.
[0051] By "reduced irritation of the mucous membranes" it is meant herein that the irritation
of mucous membranes of the user of an electrical spraying device and spraying a nonirritating
anionic surfactant as described herein or those in close proximity is reduced compared
to the irritation of mucous membranes that can occur when an anionic surfactant not
rated nonirritating to mucous membranes as measured at a 5% active surfactant solution
using the Draize test method is comprised in the sprayed composition.
[0052] Suitable non irritant anionic surfactants as described herein are selected from the
group consisting of sarcosinate surfactants, sulfosuccinate surfactants, alkyl sulphonate
surfactants, alkyl sulphate surfactants, sulfosuccinamate surfactants, sulfosuccinamide
surfactants, carboxylate surfactants and mixtures thereof. Preferably, said nonirritating
anionic surfactants are selected from the group consisting of sarcosinate surfactants
sulfosuccinate surfactants, alkyl sulphonate surfactants, alkyl sulphate surfactants,
carboxylate surfactants and mixtures thereof . More preferably, said nonirritating
anionic surfactants are selected from the group consisting of sarcosinate surfactants,
sulfosuccinate surfactants, alkyl sulphonate surfactants, alkyl sulphate surfactants
and mixtures thereof. Even more preferably, said nonirritating anionic surfactants
are selected from the group consisting of sulfosuccinate surfactants, alkyl sulphate
surfactants, alkyl sulphonate surfactants and mixtures thereof. Most preferably, said
nonirritating anionic surfactants are selected from the group consisting of sulfosuccinate
surfactants, alkyl sulphate surfactants and mixtures thereof.
[0053] Highly preferred nonirritating anionic surfactants herein are sulfosuccinate surfactants.
[0054] Indeed, it has been found that sulfosuccinate surfactants are not only nonirritating
or less irritating to mucous membranes than other surfactants, but it was also found
that they reduce the irritation caused by other surfactants when used in combination
(see Surfactant Science Series, Anionic Surfactants, Organic Chemistry vol. 56, p.
341, Marcel Dekker, Inc. NY and Basel).
[0055] Suitable sulfosuccinate surfactants are according to the formula
wherein : R
1 is hydrogen or a hydrocarbon group selected from the group consisting of straight
or branched alkyl radicals containing from 6 to 20 carbon atoms, preferably 8 to 18
carbon atoms, more preferably 10 to 16 carbon atoms, and alkyl phenyl radicals containing
from 6 to 18 carbon atoms in the alkyl group; R
2 is a hydrocarbon group selected from the group consisting of straight or branched
alkyl radicals containing from 6 to 20 carbon atoms, preferably 8 to 18 carbon atoms,
more preferably 10 to 16 carbon atoms, and alkyl phenyl radicals containing from 6
to 18 carbon atoms in the alkyl group; and M is hydrogen or a cationic moiety, e.g.,
an alkali metal cation (e.g., sodium, potassium, lithium, calcium, magnesium and the
like) or ammonium or substituted ammonium (e.g., methyl-, dimethyl-, and trimethyl
ammonium cations and quaternary ammonium cations, such as tetramethyl-ammonium and
dimethyl piperdinium cations and quaternary ammonium cations derived from alkylamines
such as ethylamine, diethylamine, triethylamine, and mixtures thereof, and the like).
[0056] Such sulfosuccinate surfactants are commercially available under the tradenames Aerosol®
from Cytec, Anionyx® from Stepan, Arylene® from Hart, Setacin® from Zschimmer & Schwarz,
Mackanate® from McIntyre and Monawet® from Mona Industries.
[0057] Suitable alkyl sulphonate surfactants for use herein include water-soluble salts
or acids of the formula RSO
3M wherein R is a C
6-C
20 linear or branched, saturated or unsaturated alkyl group, preferably a C
8-C
18 alkyl group and more preferably a C
10-C
16 alkyl group, and M is H or a cation, e.g., an alkali metal cation (e.g., sodium,
potassium, lithium), or ammonium or substituted ammonium (e.g., methyl-, dimethyl-,
and trimethyl ammonium cations and quaternary ammonium cations, such as tetramethyl-ammonium
and dimethyl piperdinium cations and quaternary ammonium cations derived from alkylamines
such as ethylamine, diethylamine, triethylamine, and mixtures thereof, and the like).
[0058] An example of a C
14-C
16 alkyl sulphonate is Hostapur® SAS available from Hoechst.
[0059] Suitable alkyl sulphate surfactants for use herein are according to the formula R
1SO
4M wherein R
1 represents a hydrocarbon group selected from the group consisting of straight or
branched alkyl radicals containing from 6 to 20, preferably 8 to 18, more preferably
10 to 16, carbon atoms and alkyl phenyl radicals containing from 6 to 18 carbon atoms
in the alkyl group. M is H or a cation, e.g., an alkali metal cation (e.g., sodium,
potassium, lithium, calcium, magnesium and the like) or ammonium or substituted ammonium
(e.g., methyl-, dimethyl-, and trimethyl ammonium cations and quaternary ammonium
cations, such as tetramethyl-ammonium and dimethyl piperdinium cations and quaternary
ammonium cations derived from alkylamines such as ethylamine, diethylamine, triethylamine,
and mixtures thereof, and the like).
[0060] By "linear alkyl sulphate or sulphonate" it is meant herein a non-substituted alkyl
sulphate or sulphonate wherein the alkyl chain comprises from 6 to 20 carbon atoms,
preferably from 8 to 18 carbon atoms, and more preferably from 10 to 16 carbon atoms,
and wherein this alkyl chain is sulphated or sulphonated at one terminus.
[0061] By "branched sulphonate or sulphate", it is meant herein an alkyl chain having from
6 to 20 total carbon atoms, preferably from 8 to 18 total carbon atoms, and more preferably
from 10 to 16 total carbon atoms, wherein the main alkyl chain is substituted by at
least another alkyl chain, and wherein the alkyl chain is sulphated or sulphonated
at one terminus.
[0062] Particularly preferred branched alkyl sulphates to be used herein are those containing
from 10 to 14 total carbon atoms like Isalchem 123 AS®. Isalchem 123 AS® commercially
available from Enichem is a C
12-13 surfactant which is 94% branched. This material can be described as CH
3-(CH
2)
m-CH(CH
2OSO
3Na)-(CH
2)
n-CH
3 where n+m=8-9. Also preferred alkyl sulphates are the alkyl sulphates where the alkyl
chain comprises a total of 12 carbon atoms, i.e., sodium 2-butyl octyl sulphate. Such
alkyl sulphate is commercially available from Condea under the trade name Isofol®
12S. Particularly suitable liner alkyl sulphonates include C12-C16 paraffin sulphonate
like Hostapur® SAS commercially available from Hoechst.
[0063] Suitable sulfosuccinamate surfactants for use herein are according to the formula
wherein R
1 and R
2 each independently represent a hydrocarbon group selected from the group consisting
of straight or branched alkyl radicals containing from 6 to 20, preferably 8 to 18,
more preferably 10 to 16, carbon atoms and alkyl phenyl radicals containing from 6
to 18 carbon atoms in the alkyl group. M is H or a cation, e.g., an alkali metal cation
(e.g., sodium, potassium, lithium, calcium, magnesium and the like) or ammonium or
substituted ammonium (e.g., methyl-, dimethyl-, and trimethyl ammonium cations and
quaternary ammonium cations, such as tetramethyl-ammonium and dimethyl piperdinium
cations and quaternary ammonium cations derived from alkylamines such as ethylamine,
diethylamine, triethylamine, and mixtures thereof, and the like).
[0064] Suitable sulfosuccinamide surfactants for use herein are according to the formula
wherein R
1 and R
2 each independently represent a hydrocarbon group selected from the group consisting
of straight or branched alkyl radicals containing from 6 to 20, preferably 8 to 18,
more preferably 10 to 16, carbon atoms and alkyl phenyl radicals containing from 6
to 18 carbon atoms in the alkyl group. M is H or a cation, e.g., an alkali metal cation
(e.g., sodium, potassium, lithium, calcium, magnesium and the like) or ammonium or
substituted ammonium (e.g., methyl-, dimethyl-, and trimethyl ammonium cations and
quaternary ammonium cations, such as tetramethyl-ammonium and dimethyl piperdinium
cations and quaternary ammonium cations derived from alkylamines such as ethylamine,
diethylamine, triethylamine, and mixtures thereof, and the like).
[0065] Suitable alkyl carboxylate surfactants for use herein are according to the formula
RCO
2M wherein : R represents a hydrocarbon group selected from the group consisting of
straight or branched alkyl radicals containing from 6 to 20, preferably 8 to 18, more
preferably 10 to 16, carbon atoms and alkyl phenyl radicals containing from 6 to 18
carbon atoms in the alkyl group. M is H or a cation, e.g., an alkali metal cation
(e.g., sodium, potassium, lithium, calcium, magnesium and the like) or ammonium or
substituted ammonium (e.g., methyl-, dimethyl-, and trimethyl ammonium cations and
quaternary ammonium cations, such as tetramethyl-ammonium and dimethyl piperdinium
cations and quaternary ammonium cations derived from alkylamines such as ethylamine,
diethylamine, triethylamine, and mixtures thereof, and the like).
[0066] Suitable sarcosinate surfactants to be used herein include acyl sarcosinate or mixtures
thereof, in its acid and/or salt form, preferably long chain acyl sarcosinates having
the following formula:
wherein M is hydrogen or a cationic moiety and wherein R is an alkyl group of from
11 to 15 carbon atoms, preferably of from 11 to 13 carbon atoms. Preferred M are hydrogen
and alkali metal salts, especially sodium and potassium. Said acyl sarcosinate surfactants
are derived from natural fatty acids and the amino-acid sarcosine (N-methyl glycine).
They are suitable to be used as aqueous solution of their salt or in their acidic
form as powder. Being derivatives of natural fatty acids, said acyl sarcosinates are
rapidly and completely biodegradable and have good skin compatibility.
[0067] Accordingly, particularly preferred long chain acyl sarcosinates to be used herein
include C
12 acyl sarcosinate, i.e., an acyl sarcosinate according to the above formula wherein
M is hydrogen and R is an alkyl group of 11 carbon atom, sodium N-lauroyl sarcosinate,
i.e., an acyl sarcosinate according to the above formula wherein M is sodium and R
is an alkyl group of 11 carbon atom, and C
14 acyl sarcosinate (i.e., an acyl sarcosinate according to the above formula wherein
M is hydrogen and R is an alkyl group of 13 carbon atoms). , sodium N-lauroyl sarcosinate
is commercially available, for example, as Hamposyl L-30® supplied by Hampshire or
Crodasinic LS30® supplied by Croda. C
14 acyl sarcosinate is commercially available, for example, as Hamposyl M-30® supplied
by Hampshire or Crodasinic MS30® supplied by Croda.
[0068] In a preferred embodiment of the present invention said nonirritating anionic surfactant
is a mixture of a sulfosuccinate surfactant and a second nonirritating anionic surfactant.
More preferably, said nonirritating anionic surfactant is a mixture of a sulfosuccinate
surfactant and a sulphate surfactant.
[0069] Such a mixture of a sulfosuccinate surfactant and a sulphate surfactant is commercially
available under the tradename Zoharpon® from Zohar.
[0070] The compositions employed in the process of treating carpets according to the present
invention provide excellent cleaning performance on various types of soils including
diffuse soils (e.g., particulate and/or greasy soils) that tend to accumulate in the
so called "high traffic areas" but also in delivering good cleaning performance on
other types of stains or soils, i.e., enzymatic stains like blood.
[0071] By "high traffic areas" it is meant herein areas with an intensive use of the carpets
in such areas as for example near doors.
[0072] By "particulate stains" it is meant herein any soils or stains of particulate nature
that can be found on any carpet, e.g. clay, dirt, dust, mud, concrete and the like.
[0073] By "greasy/oily stains" it is meant herein any soils or stains of greasy/oily nature
that can be found on any carpet, e.g., make-up, lipstick, dirty motor oil and mineral
oil, greasy food like mayonnaise and spaghetti sauce.
[0074] By "enzymatic stains" it is meant herein any soils or stains of enzymatic nature
that can be found on any carpet, e.g., grass.
[0075] The cleaning performance of a given composition on a soiled carpet may be evaluated
by the following test method : A liquid composition according to the present invention
is first applied, preferably sprayed, onto the stained portion of a carpet, left to
act thereon from 1 to 60 minutes, preferably 30 minutes, after which the carpet is
vacuum cleaned using any commercially available vacuum cleaners like for instance
a standard Hoover® 1300W vacuuming machine. The soils used in this test may be particulate
stains, greasy/oily stains or enzymatic stain as described above. The cleaning performance
may be evaluated by visual using panel score units to rate the cleaning performance.
Optional ingredients
Peroxygen bleach
[0076] As an optional but highly preferred ingredient the compositions according to the
present invention may comprise a peroxygen bleach.
[0077] Suitable peroxygen bleaches to be used herein are selected from the group consisting
of: hydrogen peroxide; water soluble sources of hydrogen peroxide; organic or inorganic
peracids; hydroperoxides; diacyl peroxides; and mixtures thereof.
[0078] As used herein a hydrogen peroxide source refers to any compound that produces perhydroxyl
ions when said compound is in contact with water. Suitable water-soluble sources of
hydrogen peroxide for use herein are selected from the group consisting of percarbonates,
perborates and persilicates and mixtures thereof.
[0079] Suitable diacyl peroxides for use herein are selected from the group consisting of
aliphatic, aromatic and aliphatic-aromatic diacyl peroxides, and mixtures thereof.
[0080] Suitable aliphatic diacyl peroxides for use herein are dilauroyl peroxide, didecanoyl
peroxide, dimyristoyl peroxide, or mixtures thereof. A suitable aromatic diacyl peroxide
for use herein is for example benzoyl peroxide. A suitable aliphatic-aromatic diacyl
peroxide for use herein is for example lauroyl benzoyl peroxide. Such diacyl peroxides
have the advantage to be particularly safe to carpets and carpet dyes while delivering
excellent bleaching performance.
[0081] Suitable organic or inorganic peracids for use herein are selected from the group
consisting of : persulphates such as monopersulfate; peroxyacids such as diperoxydodecandioic
acid (DPDA); magnesium perphthalic acid; perlauric acid; perbenzoic and alkylperbenzoic
acids; and mixtures thereof.
[0082] Suitable hydroperoxides for use herein are selected from the group consisting of
tert-butyl hydroperoxide, cumyl hydroperoxide, 2,4,4-trimethylpentyl-2-hydroperoxide,
di-isopropylbenzene-monohydroperoxide, tert-amyl hydroperoxide and 2,5-dimethyl-hexane-2,5-dihydroperoxide
and mixtures thereof. Such hydroperoxides have the advantage to be particularly safe
to carpets and carpet dyes while delivering excellent bleaching performance.
[0083] Preferred peroxygen bleaches herein are selected from the group consisting of : hydrogen
peroxide; water soluble sources of hydrogen peroxide; organic or inorganic peracids;
hydroperoxides; and diacyl peroxides; and mixtures thereof.
[0084] More preferred peroxygen bleaches herein are selected from the group consisting of
hydrogen peroxide, water soluble sources of hydrogen peroxide and diacyl peroxides
and mixtures thereof. Even more preferred peroxygen bleaches herein are selected from
the group consisting of hydrogen peroxide, water soluble sources of hydrogen peroxide,
aliphatic diacyl peroxides, aromatic diacyl peroxides and aliphatic-aromatic diacyl
peroxides and mixtures thereof. Most preferred peroxygen bleaches herein are hydrogen
peroxide, water soluble sources of hydrogen peroxide or mixtures thereof.
[0085] Typically, the liquid compositions herein comprise from 0.01% to 20%, preferably
from 0.5 % to 10%, and more preferably from 1% to 7% by weight of the total composition
of a peroxygen bleach, or mixtures thereof.
[0086] The presence of a peroxygen bleach in preferred compositions employed in the process
of treating carpets according to the present invention contributes to the excellent
cleaning and sanitizing performance on various types of soils including on spot stains
like bleachable stains (e.g., coffee, beverage, food) of the compositions of the present
invention.
[0087] By "bleachable stains" it is meant herein any soils or stains containing ingredients
sensitive to bleach that can be found on any carpet, e.g., coffee or tea.
Anti-resoiling agent
[0088] The compositions as disclosed herein may comprise as a highly preferred optional
ingredient an anti-resoiling agent.
[0089] Suitable anti-resoiling agents include anti-resoiling polymers.
[0090] Suitable poly (vinyl methyl ether / maleic acid) copolymers are according to the
general formula :
wherein n (degree of polymerisation) is an integer of from 50 to 1600, preferably
from 100 to 800, and more preferably from 200 to 400.
[0091] Accordingly, suitable poly (vinyl methyl ether / maleic acid) copolymers for use
herein have an average molecular weight of from 1'000 to 10'000'000, preferably 10'000
to 1'000'000, more preferably from 10'000 to 500'000, and most preferably from 50'000
to 100'000.
[0092] Suitable poly (vinyl methyl ether / maleic acid) copolymers are commercially available,
for instance, from ISP Corporation, New York, NY and Montreal, Canada under the product
names Gantrez AN Copolymer® (AN-119 copolymer, average molecular weight of 20'000;
AN-139 copolymer, average molecular weight of 41'000; AN-149 copolymer, average molecular
weight of 50'000; AN-169 copolymer, average molecular weight of 67'000; AN-179 copolymer,
average molecular weight of 80'000), Gantrez S® (Gantrez S97®, average molecular weight
of 70'000), and Gantrez ES® (ES-225, ES-335, ES-425, ES-435), Gantrez V® (V-215, V-225,
V-425).
[0093] Preferably the poly (vinyl methyl ether / maleic acid) copolymers are either crosslinked
or not crosslinked, i.e., linear. More preferably the poly (vinyl methyl ether / maleic
acid) copolymers are not crosslinked.
[0094] Suitable anti-resoiling polymers include soil suspending polyamine polymers. Any
soil suspending polyamine polymer known to those skilled in the art may also be used
herein. Particularly suitable polyamine polymers for use herein are alkoxylated polyamines.
Such materials can conveniently be represented as molecules of the empirical structures
with repeating units :
and
wherein R is a hydrocarbyl group, usually of 2-6 carbon atoms; R
1 may be a C
1-C
20 hydrocarbon; the alkoxy groups are ethoxy, propoxy, and the like, and y is from 2
to 30, most preferably from 7 to 20; n is an integer of at least 2, preferably from
2 to 40, most preferably from 2 to 5; and X- is an anion such as halide or methylsulfate,
resulting from the quaternization reaction.
[0095] The most highly preferred polyamines for use herein are the so-called ethoxylated
polyethylene amines, i.e., the polymerized reaction product of ethylene oxide with
ethyleneimine, having the general formula :
wherein y is from 2 to 50, preferably from 5 to 30, and n is from 1 to 40, preferably
from 2 to 40. Particularly preferred for use herein is an ethoxylated polyethylene
amine, in particular an ethoxylated polyethylene amine wherein n=2 and y=20, and an
ethoxylated polyethylene amine wherein n=40 and y=7.
[0096] Suitable ethoxylated polyethylene amines are commercially available from Nippon Shokubai
CO., LTD under the product names ESP-0620A® (ethoxylated polyethylene amine wherein
n=2 and y=20) or from BASF under the product names ES-8165 and from BASF under the
product name LUTENSIT K - 187/50® (ethoxylated polyethylene amine wherein n=40 and
Y=7).
[0097] Suitable anti-resoiling polymers also include polyamine N-oxide polymers.
[0098] Suitable polyamine N-oxide polymers for use herein are according to the following
formula : R-A
x-P; containing at least one N-oxide group (N-O group);
wherein : P is a polymerizable unit to which an N-O group can be attached and/or the
N-O group can form part of the polymerizable unit;
A is one of the following structures:
x is 0 or 1;
and R is an aliphatic, ethoxylated aliphatic, aromatic, heterocyclic or alicyclic
group or any combination thereof to which the N-O group can be attached to R or the
nitrogen of the N-O group is part of R.
[0099] By "N-O group" it is meant one of the following general structures:
wherein R
1, R
2, R
3 are aliphatic, aromatic, heterocyclic or alicyclic groups or combinations thereof;
x, y and z are 0 or 1; and the nitrogen of the N-O group can be attached or form part
of any of the aforementioned groups.
[0100] Any polymerizable unit P can be used as long as the amine oxide polymer formed is
water-soluble and provides the carpet treating composition with carpet cleaning and/or
carpet anti-resoiling benefits. Preferred polymerizable unit P are vinyl, alkylenes,
esters, ethers, amides, imides, acrylates and mixtures thereof. A more preferred polymerizable
unit P is vinyl.
[0101] Preferred polyamine N-oxide polymers are those wherein R is a heterocyclic group
such as pyridine, pyrrole, imidazole, or a derivative thereof, to which the nitrogen
of the N-O group can be attached or the N-O group is part of these groups. Most preferred
polyamine N-oxide polymers are those wherein R is a pyridine.
[0102] The polyamine N-oxide polymer can be obtained in almost any degree of polymerization.
Typically, the average molecular weight is within the range of 1,000 to 100,000; more
preferred 5,000 to 100,000; most preferred 5,000 to 25,000.
[0103] Suitable polyamine N-oxide polymer are polyvinyl pyridine-N-oxide polymers wherein
: the polymerizable unit P is vinyl; x=0; and R is pyridine wherein the nitrogen of
the N-O group is part of.
[0104] Suitable poly vinyl pyridine-N-oxide polymers are commercially available from Hoechst
under the trade name of Hoe S 4268®, and from Reilly Industries Inc. under the trade
name of PVNO.
[0105] Furthermore, suitable anti-resoiling polymers include N-vinyl polymer.
[0106] Suitable N-vinyl polymers include polyvinyl pyrrolidone polymers, co-polymers of
N-vinylpyrrolidone and N-vinylimidazole, co-polymers of N-vinylpyrrolidone and acrylic
acid, and mixtures thereof.
[0107] Suitable co-polymers of N-vinylpyrrolidone and N-vinylimidazole polymers (referred
to as a class as "PVPVI") are according to the formula :
in which n is between 50 and 500 and preferably between 80 and 200 and m is between
50 and 500 and preferably between 80 and 200.
[0108] Preferably the PVPVI has an average molecular weight range from 1,000 to 100,000,
more preferably from 5,000 to 100,000, and most preferably from 5,000 to 20,000. (The
average molecular weight range is determined by light scattering as described in Barth,
et al.,
Chemical Analysis, Vol 113. "Modern Methods of Polymer Characterization", the disclosures of which
are incorporated herein by reference.)
[0109] The PVPVI co-polymers typically have a molar ratio of N-vinylimidazole to N-vinylpyrrolidone
from 1:1 to 0.2:1, more preferably from 0.8:1 to 0.3:1, most preferably from 0.6:1
to 0.4:1. These co-polymers can be either linear or branched.
[0110] Suitable co-polymers of N-vinylpyrrolidone and N-vinylimidazole are commercially
available from BASF, under the trade name of Sokalan® PG55.
[0111] Suitable polyvinylpyrrolidone ("PVP") for use herein are homopolymers of N-vinylpyrrolidone
having the following repeating monomer:
[0112] Preferred vinylpyrrolidone homopolymers for use herein have an average molecular
weight of from 1,000 to 100,000, preferably from 5,000 to 100,000, and more preferably
from 5,000 to 20,000.
[0113] Suitable vinylpyrrolidone homopolymers are commercially available from BASF under
the trade names Luviskol® K15 (viscosity molecular weight of 10,000), Luviskol® K25
(viscosity molecular weight of 24,000), Luviskol® K30 (viscosity molecular weight
of 40,000), and other vinylpyrrolidone homopolymers known to persons skilled in the
detergent field (see for example EP-A-262,897 and EP-A-256,696).
[0114] Suitable co-polymers of N-vinylpyrrolidone and acrylic acid (referred to as a class
as "PV/AA") are according to the formula :
in which n is between 50 and 1000 and preferably between 100 and 200 and m is between
150 and 3000 and preferably between 300 and 600.
[0115] Preferably the PV/AA have an average molecular weight range from 1,000 to 100,000,
more preferably from 5,000 to 100,000, and most preferably from 5,000 to 25,000.
[0116] Suitable co-polymers of N-vinylpyrrolidone and acrylic acid are commercially available
from BASF under the trade name Sokalan® PG 310.
[0117] Preferred N-vinyl polymers are polyvinyl pyrrolidone polymers, co-polymers of N-vinylpyrrolidone
and N-vinylimidazole, co-polymers of N-vinylpyrrolidone and acrylic acid, and mixtures
thereof, even more preferred are polyvinyl pyrrolidone polymers.
[0118] Suitable anti-resoiling polymers also include soil suspending polycarboxylate polymers.
[0119] Any soil suspending polycarboxylate polymer known to those skilled in the art can
be used according to the present invention such as homo- or co-polymeric polycarboxylic
acids or their salts including polyacrylates and copolymers of maleic anhydride or/and
acrylic acid and the like. Indeed, such soil suspending polycarboxylate polymers can
be prepared by polymerizing or copolymerizing suitable unsaturated monomers, preferably
in their acid form. Unsaturated monomeric acids that can be polymerized to form suitable
polymeric polycarboxylates include acrylic acid, maleic acid (or maleic anhydride),
fumaric acid, itaconic acid, aconitic acid, mesaconic acid, citraconic acid and methylenemalonic
acid. The presence in the polymeric polycarboxylates herein of monomeric segments,
containing no carboxylate radicals such as vinylmethyl ether, styrene, ethylene, etc.
is suitable provided that such segments do not constitute more than 40% by weight.
[0120] Particularly suitable polymeric polycarboxylates to be used herein can be derived
from acrylic acid. Such acrylic acid-based polymers which are useful herein are the
water-soluble salts of polymerized acrylic acid. The average molecular weight of such
polymers in the acid form preferably ranges from 2,000 to 10,000, more preferably
from 4,000 to 7,000 and most preferably from 4,000 to 5,000. Water-soluble salts of
such acrylic acid polymers can include, for example, the alkali metal, ammonium and
substituted ammonium salts. Soluble polymers of this type are known materials. Use
of polyacrylates of this type in detergent compositions has been disclosed, for example,
in Diehl, U.S. Patent 3,308,067, issued March 7, 1967.
[0121] Acrylic/maleic-based copolymers may also be used as a preferred soil suspending polycarboxylic
polymer. Such materials include the water-soluble salts of copolymers of acrylic acid
and maleic acid. The average molecular weight of such copolymers in the acid form
preferably ranges from 2,000 to 100,000, more preferably from 5,000 to 75,000, most
preferably from 7,000 to 65,000. The ratio of acrylate to maleate segments in such
copolymers will generally range from 30:1 to 1:1, more preferably from 10:1 to 2:1.
Water-soluble salts of such acrylic acid/maleic acid copolymers can include, for example,
the alkali metal, ammonium and substituted ammonium salts. Soluble acrylate/maleate
copolymers of this type are known materials which are described in European Patent
Application No. 66915, published December 15, 1982. Particularly preferred is a copolymer
of maleic / acrylic acid with an average molecular weight of 70,000. Such copolymers
are commercially available from BASF under the trade name SOKALAN® CP5.
[0122] Other suitable anti-resoiling polymers include those anti-resoiling polymers having:
(a) one or more nonionic hydrophile components consisting essentially of (i) polyoxyethylene
segments with a degree of polymerization of at least 2, or (ii) oxypropylene or polyoxypropylene
segments with a degree of polymerization of from 2 to 10, wherein said hydrophile
segment does not encompass any oxypropylene unit unless it is bonded to adjacent moieties
at each end by ether linkages, or (iii) a mixture of oxyalkylene units comprising
oxyethylene and from 1 to about 30 oxypropylene units wherein said mixture contains
a sufficient amount of oxyethylene units such that the hydrophile component has hydrophilicity
great enough to increase the hydrophilicity of conventional polyester synthetic fiber
surfaces upon deposit of the soil release agent on such surface, said hydrophile segments
preferably comprising at least about 25% oxyethylene units and more preferably, especially
for such components having about 20 to 30 oxypropylene units, at least about 50% oxyethylene
units; or (b) one or more hydrophobe components comprising (i) C
3 oxyalkylene terephthalate segments, wherein, if said hydrophobe components also i
comprise oxyethylene terephthalate, the ratio of oxyethylene terephthalate: C
3 oxyalkylene terephthalate units is about 2:1 or lower, (ii) C
4-C
6 alkylene or oxy C
4-C
6 alkylene segments, or mixtures therein, (iii) poly (vinyl ester) segments, preferably
polyvinyl acetate), having a degree of polymerization of at least 2, or (iv) C
1-C
4 alkyl ether or C
4 hydroxyalkyl ether substituents, or mixtures therein, wherein said substituents are
present in the form of C
1-C
4 alkyl ether or C
4 hydroxyalkyl ether cellulose derivatives, or mixtures therein, and such cellulose
derivatives are amphiphilic, whereby they have a sufficient level of C
1-C
4 alkyl ether and/or C
4 hydroxyalkyl ether units to deposit upon conventional polyester synthetic fiber surfaces
and retain a sufficient level of hydroxyls, once adhered to such conventional synthetic
fiber surface, to increase fiber surface hydrophilicity, or a combination of (a) and
(b).
[0123] Typically, the polyoxyethylene segments of (a)(i) will have a degree of polymerization
of from about 1 to about 200, although higher levels can be used, preferably from
3 to about 150, more preferably from 6 to about 100. Suitable oxy C
4-C
6 alkylene hydrophobe segments include, but are not limited to, end-caps of polymeric
soil release agents such as MO
3S(CH
2)nOCH
2CH
2O-, where M is sodium and n is an integer from 4-6, as disclosed in U.S. Patent 4,721,580,
issued January 26, 1988 to Gosselink.
[0124] Anti-resoiling polymers useful in the present invention also include cellulosic derivatives
such as hydroxyether cellulosic polymers, co-polymeric blocks of ethylene terephthalate
or propylene terephthalate with polyethylene oxide or polypropylene oxide terephthalate,
and the like. Such anti-resoiling polymers are commercially available and include
hydroxyethers of cellulose such as METHOCEL® (Dow). Cellulosic anti-resoiling polymers
for use herein also include those selected from the group consisting of C
1-C
4 alkyl and C
4 hydroxyalkyl cellulose; see U.S. Patent 4,000,093, issued December 28, 1976 to Nicol,
et al.
[0125] Anti-resoiling polymers characterised by poly(vinyl ester) hydrophobe segments include
graft co-polymers of poly(vinyl ester), e.g., C
1-C
6 vinyl esters, preferably poly(vinyl acetate) grafted onto polyalkylene oxide backbones,
such as polyethylene oxide backbones. See European Patent Application 0 219 048, published
April 22, 1987 by Kud, et al. Commercially available anti-resoiling polymers of this
kind include the SOKALAN® type of material, e.g., SOKALAN HP-22®, available from BASF.
[0126] One type of preferred anti-resoiling polymers is a co-polymer having random blocks
of ethylene terephthalate and polyethylene oxide (PEO) terephthalate. The molecular
weight of this anti-resoiling polymers is in the range of from about 25,000 to about
55,000. See U.S. Patent 3,959,230 to Hays, issued May 25, 1976 and U.S. Patent 3,893,929
to Basadur issued July 8, 1975.
[0127] Another preferred anti-resoiling polymers is a polyester with repeat units of ethylene
terephthalate units which contains 10-15% by weight of ethylene terephthalate units
together with 90-80% by weight of polyoxyethylene terephthalate units, derived from
a polyoxyethylene glycol of average molecular weight 300-5,000. Examples of this polymer
include the commercially available material ZELCON 5126® (from Dupont) and MILEASE
T® (from ICI). See also U.S. Patent 4,702,857, issued October 27, 1987 to Gosselink.
[0128] Another preferred anti-resoiling polymers agent is a sulfonated product of a substantially
linear ester oligomer comprised of an oligomeric ester backbone of terephthaloyl and
oxyalkyleneoxy repeat units and terminal moieties covalently attached to the backbone.
These anti-resoiling polymers are fully described in U.S. Patent 4,968,451, issued
November 6, 1990 to J.J. Scheibel and E.P. Gosselink. Other suitable anti-resoiling
polymers include the terephthalate polyesters of U.S. Patent 4,711,730, issued December
8, 1987 to Gosselink et al, the anionic end-capped oligomeric esters of U.S. Patent
4,721,580, issued January 26, 1988 to Gosselink, and the block polyester oligomeric
compounds of U.S. Patent 4,702,857, issued October 27, 1987 to Gosselink.
[0129] Preferred anti-resoiling polymers also include the soil release agents of U.S. Patent
4,877,896, issued October 31, 1989 to Maldonado et al, which discloses anionic, especially
sulfoaroyl, end-capped terephthalate esters.
[0130] Still another preferred anti-resoiling agent is an oligomer with repeat units of
terephthaloyl units, sulfoisoterephthaloyl units, oxyethyleneoxy and oxy-1,2-propylene
units. The repeat units form the backbone of the oligomer and are preferably terminated
with modified isethionate end-caps. A particularly preferred anti-resoiling agent
of this type comprises about one sulfoisophthaloyl unit, 5 terephthaloyl units, oxyethyleneoxy
and oxy-1,2-propyleneoxy units in a ratio of from about 1.7 to about 1.8, and two
end-cap units of sodium 2-(2-hydroxyethoxy)-ethanesulfonate. Said anti-resoiling agent
also comprises from about 0.5% to about 20%, by weight of the oligomer, of a crystalline-reducing
stabilizer, preferably selected from the group consisting of xylene sulfonate, cumene
sulfonate, toluene sulfonate, and mixtures thereof. See U.S. Pat. No. 5,415,807, issued
Mayl6, 1995, to Gosselink et al.
[0131] The liquid compositions may comprise from 0.01% to 10%, preferably from 0.01% to
5%, and more preferably from 0.05% to 2% by weight of the total composition of a further
anti-resoiling agent.
[0132] A preferred anti-resoiling agent is an anti-resoiling polymer. A more preferred anti-resoiling
agent is a poly (vinyl methyl ether / maleic acid) copolymer, a soil suspending polyamine
polymer, a poly vinyl pyridine-N-oxide polymer or a mixture thereof. An even more
preferred anti-resoiling agent is a poly (vinyl methyl ether / maleic acid) copolymer,
an alkoxylated polyamine polymer, a poly vinyl pyridine-N-oxide polymer or a mixture
thereof. The most preferred anti-resoiling agent useful in the compositions herein
are selected from the group consisting of : a poly (vinyl methyl ether / maleic acid)
copolymer; an ethoxylated polyethylene amine according to the formula as described
above wherein n=2 and y=20; an ethoxylated polyethylene amine according to the formula
as described herein wherein n=40 and y=7; a poly vinyl pyridine-N-oxide polymer; and
mixtures thereof.
Volatile organic compounds
[0133] As an optional but highly preferred ingredient the compositions according to the
present invention may comprise a volatile organic compound (VOC) or a mixture thereof.
[0134] Typically, the compositions herein may comprise up to 90%, preferably from 0.1% to
20%, more preferably from 0.5% to 10% and most preferably from 1% to 5% by weight
of the total composition of a volatile organic compound or a mixture thereof.
[0135] Suitable volatile organic compounds for use herein are selected from the group consisting
of : an aliphatic and/or aromatic alcohol; a glycol ethers and/or a derivative thereof;
a polyol; and a mixture thereof.
[0136] Suitable aromatic alcohols to be used herein are according to the formula R
1-OH wherein R
1 is an alkyl substituted or non-alkyl substituted aryl group of from 1 to 20 carbon
atoms, preferably from 2 to 15 and more preferably from 2 to 10. A suitable aromatic
alcohol to be used herein is benzyl alcohol.
[0137] Suitable aliphatic alcohols to be used herein are according to the formula R
2-OH wherein R
2 is a linear or branched saturated or unsaturated hydrocarbon chain of from 1 to 20
carbon atoms, preferably from 1 to 10 and more preferably from 2 to 6. Highly preferred
herein are aliphatic alcohols with 2 to 4 carbon atoms and most preferably 4 carbon
atoms, or mixtures thereof. Suitable aliphatic alcohols to be used herein include
linear alcohol like 2-octanol, decanol, isopropyl alcohol, propyl alcohol, ethanol
and/or methanol. Highly preferred herein are ethanol, isopropyl alcohol or a mixture
thereof.
[0138] Ethanol may be commercially available from Eridania Italia under its chemical name.
[0139] Isopropanol may be commercially available from Merck/BDH Italia under its chemical
name.
[0140] Suitable glycol ethers and/or derivatives thereof to be used herein include monoglycol
ethers and/or derivatives thereof, polyglycol ethers and/or derivatives thereof and
mixtures thereof.
[0141] Suitable monoglycol ethers and derivatives thereof to be used herein include n-buthoxypropanol
(n-BP), water-soluble CELLOSOLVE® solvents or mixtures thereof. Preferred Cellosolve®
solvents include propoxy ethyl acetate salt (i.e., Propyl Cellosolve acetate salt®),
ethanol-2-butoxy phosphate salt (i.e., Butyl Cellosolve phosphate salt®), 2-(Hexyloxy)ethanol
(i.e., 2-hexyl Cellosolve®), 2-ethoxy ethanol (i.e., 2-ethyl Cellosolve®), 2-butoxyethanol
(i.e., 2-buthyl Cellosolve®) or mixtures thereof.
[0142] Suitable polyglycol ethers and derivatives thereof to be used herein include n-butoxypropoxypropanol
(n-BPP), butyl triglycol ether (BTGE), butyl diglycol ether (BDGE), water-soluble
CARBITOL® solvents or mixtures thereof.
[0143] Preferred water-soluble CARBITOL® solvents are compounds of the 2-(2-alkoxyethoxy)ethanol
class, 2-(2-alkoxyethoxy)propanol class and/or 2-(2-alkoxyethoxy)butanol class wherein
the alkoxy group is derived from ethyl, propyl or butyl. A preferred water-soluble
carbitol is 2-(2-butoxyethoxy)ethanol also known as butyl carbitol®.
[0144] Preferred glycol ethers and/or derivatives thereof are 2-ethoxyethanol, 2-butoxyethanol,
n-butoxypropoxypropanol, butyl carbitol® or mixtures thereof.
[0145] Suitable polyol solvents to be used herein are the polyols having at least 2 hydroxyl
groups (-OH) like diols. Suitable diols to be used herein include 2-ethyl-1,3-hexanediol,
2,2,4-trimethyl-1,3-pentanediol, methyl-2,4 pentanediol or mixture thereof.
[0146] The volatile organic compounds, when present, further contribute to the excellent
overall cleaning performance of the present invention. Additionally, their addition
in the compositions herein also enhances the sanitising properties of the compositions.
Surfactants
[0147] Preferred compositions according to the present invention typically comprise an additional
surfactant or a mixture thereof on top of the nonirritating anionic surfactant as
described above.
[0148] Typically, the compositions herein may comprise up to 50%, preferably from 0.1% to
20%, more preferably from 0.5% to 10% and most preferably from 1% to 5% by weight
of the total composition of an additional surfactant.
[0149] Suitable additional surfactants may be selected from those well known in the art
including anionic surfactants on top of the nonirritating anionic surfactant as described
above, nonionic surfactants, zwitterionic surfactants, amphoteric surfactants and
cationic surfactants and mixtures thereof.
[0150] Suitable nonionic surfactants include amine oxide surfactants. Suitable amine oxide
surfactants are according to the formula R
1R
2R
3NO, wherein each of R
1, R
2 and R
3 is independently a saturated substituted or unsubstituted, linear or branched alkyl
groups of from 1 to 30 carbon atoms, preferably of from 1 to 20 carbon atoms, and
mixtures thereof.
[0151] Particularly preferred amine oxide surfactants to be used according to the present
invention are amine oxide surfactants having the following formula R
1R
2R
3NO wherein R
1 is a saturated linear or branched alkyl group of from 1 to 30 carbon atoms, preferably
of from 6 to 20 carbon atoms, more preferably of from 6 to 16 carbon atoms, and wherein
R
2 and R
3 are independently substituted or unsubstituted, linear or branched alkyl groups of
from 1 to 4 carbon atoms, preferably of from 1 to 3 carbon atoms, and more preferably
are methyl groups. Preferred amine oxide surfactants used herein are pure-cut amine
oxide surfactants, i.e., a pure single amine oxide surfactant, e.g. C
8 N,N-dimethyl amine oxide, as opposed to mixtures of amine oxide surfactants of different
chain lengths
[0152] Suitable amine oxide surfactants for use herein are for instance pure cut C
8 amine oxide, pure cut C
10 amine oxide, pure cut C
14 amine oxide, natural blend C
8-C
10 amine oxides as well as natural blend C
12-C
16 amine oxides. Such amine oxide surfactants may be commercially available from Hoechst
or Stephan.
[0153] Suitable nonionic surfactants for use herein also include any ethoxylated C
6-C
24 fatty alcohol nonionic surfactant, alkyl propoxylates and mixtures thereof, fatty
acid C
6-C
24 alkanolamides, C
6-C
20 polyethylglycol ethers, polyethylene glycol with molecular weight 1000 to 80000 and
glucose amides, alkyl pyrrolidones.
[0154] Suitable cationic surfactants for use herein include quaternary ammonium compounds
of the formula R
1R
2R
3R
4N+ where R
1,R
2 and R
3 are methyl groups, and R
4 is a C
12-15 alkyl group, or where R
1 is an ethyl or hydroxy ethyl group, R
2 and R
3 are methyl groups and R
4 is a C
12-15 alkyl group.
[0155] Suitable zwitterionic surfactants are zwitterionic betaine surfactants. Suitable
zwitterionic betaine surfactants for use herein contain both a cationic hydrophilic
group, i.e., a quaternary ammonium group, and anionic hydrophilic group on the same
molecule at a relatively wide range of pH's. The typical anionic hydrophilic groups
are carboxylates and sulphonates, although other groups like sulfates, phosphonates,
and the like can be used. A generic formula for the zwitterionic betaine surfactant
to be used herein is :
R
1-N+(R
2)(R
3)R
4X-
wherein R
1 is a hydrophobic group; R
2 is hydrogen, C
1-C
6 alkyl, hydroxy alkyl or other substituted C
1-C
6 alkyl group; R
3 is C
1-C
6 alkyl, hydroxy alkyl or other substituted C
1-C
6 alkyl group which can also be joined to R
2 to form ring structures with the N, or a C
1-C
6 sulphonate group; R
4 is a moiety joining the cationic nitrogen atom to the hydrophilic group and is typically
an alkylene, hydroxy alkylene, or polyalkoxy group containing from 1 to 10 carbon
atoms; and X is the hydrophilic group, which is a carboxylate or sulphonate group.
[0156] Preferred hydrophobic groups R
1 are aliphatic or aromatic, saturated or unsaturated, substituted or unsubstituted
hydrocarbon chains that can contain linking groups such as amido groups, ester groups.
More preferred R
1 is an alkyl group containing from 1 to 24, preferably from 8 to 18, and more preferably
from 10 to 16 carbon atoms. These simple alkyl groups are preferred for cost and stability
reasons. However, the hydrophobic group R
1 can also be an amido radical of the formula R
a-C(O)-NH-(C(R
b)
2)m, wherein R
a is an aliphatic or aromatic, saturated or unsaturated, substituted or unsubstituted
hydrocarbon chain, preferably an alkyl group containing from 8 up to 20, preferably
up to 18, more preferably up to 16 carbon atoms, R
b is selected from the group consisting of hydrogen and hydroxy groups, and m is from
1 to 4, preferably from 2 to 3, more preferably 3, with no more than one hydroxy group
in any (C(R
b)
2) moiety.
[0157] Preferred R
2 is hydrogen, or a C
1-C
3 alkyl and more preferably methyl. Preferred R3 is C
1-C
4 sulphonate group, or a C
1-C
3 alkyl and more preferably methyl. Preferred R
4 is (CH
2)
n wherein n is an integer from 1 to 10, preferably from 1 to 6, more preferably is
from 1 to 3.
[0158] Some common examples of betaine/sulphobetaine are described in U.S. Pat. Nos. 2,082,275,
2,702,279 and 2,255,082, incorporated herein by reference.
[0159] Examples of particularly suitable alkyldimethyl betaines include coconut-dimethyl
betaine, lauryl dimethyl betaine, decyl dimethyl betaine, 2-(N-decyl-N, N-dimethyl-ammonia)acetate,
2-(N-coco N, N-dimethylammonio) acetate, myristyl dimethyl betaine, palmityl dimethyl
betaine, cetyl dimethyl betaine, stearyl dimethyl betaine. For example Coconut dimethyl
betaine is commercially available from Seppic under the trade name of Amonyl 265®.
Lauryl betaine is commercially available from Albright & Wilson under the trade name
Empigen BB/L®.
[0160] Examples of amidobetaines include cocoamidoethylbetaine, cocoamidopropyl betaine
or C
10-C
14 fatty acylamidopropylene(hydropropylene)sulfobetaine. For example C
10-C
14 fatty acylamidopropylene(hydropropylene)sulfobetaine is commercially available from
Sherex Company under the trade name "Varion CAS® sulfobetaine".
[0161] A further example of betaine is Lauryl-immino-dipropionate commercially available
from Rhone-Poulenc under the trade name Mirataine H2C-HA®.
[0162] A preferred additional surfactant for use herein is a zwitterionic surfactant, a
nonionic surfactant or a cationic surfactant or a mixture thereof, a more preferred
surfactant is a zwitterionic betaine surfactant.
Other optional ingredients
[0163] The compositions herein may further comprise conventional carpet cleaning ingredients.
Preferably, the compositions herein may comprises a number of additional compounds
selected from the group consisting of stabilising agents, chelating agents, builder
systems, radical scavengers, perfumes, dyes, suds suppressing agents, enzymes, photobleaching
agents, bleach activators and other minors and mixtures thereof.
[0164] In a preferred embodiment, the compositions herein may further comprises a number
of additional compounds selected from the group consisting of stabilising agents,
chelating agents, builder systems, radical scavengers, perfumes, dyes, suds suppressing
agents, enzymes, photobleaching agents, bleach activators and other minors and mixtures
thereof.
Stabilizing agents
[0165] The compositions of the present invention may further comprise a stabilizing agent
selected from the group consisting of hydroxy pyridine N-oxides or derivatives thereof
and mixtures thereof.
[0166] Suitable hydroxy pyridine N-oxides or derivatives thereof are according to the following
formula:
wherein X is nitrogen, Y is one of the following groups oxygen, -CHO, -OH,-(CH
2)n-COOH, wherein n is an integer of from 0 to 20, preferably of from 0 to 10 and more
preferably is 0, and wherein Y is preferably oxygen. Accordingly particularly preferred
hydroxy pyridine N-oxides or derivatives thereof to be used herein is 2-hydroxy pyridine
N-oxide.
[0167] Hydroxy pyridine N-oxides or derivatives thereof may be commercially available from
Sigma.
[0168] Typically, the compositions herein may comprise up to 2%, preferably from 0.001%
to 1% and more preferably from 0.001% to 0.5% by weight of the total composition of
a hydroxy pyridine N-oxide or derivatives thereof or mixtures thereof.
Chelating agents
[0169] The compositions of the present invention may further comprise a chelating agent.
[0170] Suitable chelating agents are those known to those skilled in the art. Particularly
suitable chelating agents include for examples phosphonate chelating agents, polyfunctionally-substituted
aromatic chelating agents, amino carboxylate chelating agents, other chelating agents
like ethylene diamine N,N'-disuccinic acid and mixtures thereof.
[0171] Typically, the compositions herein may comprise up to 4%, preferably from 0.001%
to 1%, and more preferably from 0.001% to 0.5% by weight of the total composition
of a chelating agent.
[0172] Suitable phosphonate chelating agents to be used herein may include ethydronic acid,
alkali metal ethane 1-hydroxy diphosphonates as well as amino phosphonate compounds,
including amino alkylene poly (alkylene phosphonate), alkali metal ethane 1-hydroxy
diphosphonates, nitrilo trimethylene phosphonates, ethylene diamine tetra methylene
phosphonates, and diethylene triamine penta methylene phosphonates. The phosphonate
compounds may be present either in their acid form or as salts of different cations
on some or all of their acid functionalities. Preferred phosphonate chelating agents
to be used herein are diethylene triamine penta methylene phosphonates (DETPMP). Such
phosphonate chelating agents are commercially available from Monsanto under the trade
name DEQUEST®.
[0173] Polyfunctionally-substituted aromatic chelating agents may also be useful in the
compositions herein. See U.S. patent 3,812,044, issued May 21, 1974, to Connor et
al. Preferred compounds of this type in acid form are dihydroxydisulfobenzenes such
as 1,2-dihydroxy -3,5-disulfobenzene.
[0174] A preferred biodegradable chelating agent for use herein is ethylene diamine N,N'-
disuccinic acid, or alkali metal, or alkaline earth, ammonium or substitutes ammonium
salts thereof or mixtures thereof. Ethylenediamine N,N'- disuccinic acids, especially
the (S,S) isomer, have been extensively described in US patent 4, 704, 233, November
3, 1987. to Hartman and Perkins. Ethylenediamine N,N'- disuccinic acid is, for instance,
commercially available under the tradename ssEDDS® from Palmer Research Laboratories.
[0175] Suitable amino carboxylate chelating agents to be used herein include ethylene diamine
tetra acetates, diethylene triamine pentaacetates, diethylene triamine pentaacetate
(DTPA), N-hydroxyethylethylenediamine triacetates, nitrilotriacetates, ethylenediamine
tetrapropionates, triethylenetetraaminehexaacetates, ethanoldiglycines, propylene
diamine tetracetic acid (PDTA) and methyl glycine di-acetic acid (MGDA), both in their
acid form, or in their alkali metal, ammonium, and substituted ammonium salt forms.
A particularly suitable amino carboxylate to be used herein is diethylene triamine
penta acetic acid (DTPA).
[0176] Other suitable chelating agents to be used herein include salicylic acid or derivatives
thereof, or mixtures thereof according to the following formula:
wherein X is carbon, Y is one of the following groups -CHO, -OH, -(CH2)n-COOH, and
preferably is -(CH2)n-COOH, and wherein n is an integer of from 0 to 20, preferably
of from 0 to 10 and more preferably is 0. Salicylic acid and derivatives thereof may
be used herein either in their acid form or in their salts form as for example sodium
salts.
[0177] Salicylic acid is particularly preferred herein and may be commercially available
from Rhone Poulenc.
Bleach activators
[0178] In an embodiment of the present invention where the compositions herein comprise
a peroxygen bleach, preferably hydrogen peroxide, said compositions may further comprise
a bleach activator, as an optional ingredient.
[0179] By "bleach activator", it is meant herein a compound which reacts with the peroxygen
bleach, preferably hydrogen peroxide, to form a peracid. The peracid thus formed constitutes
the activated bleach.
[0180] Suitable bleach activators to be used herein include those belonging to the class
of esters, amides, imides, or anhydrides. Examples of suitable compounds of this type
are disclosed in British Patent GB 1 586 769 and GB 2 143 231 and a method for their
formation into a prilled form is described in European Published Patent Application
EP-A-62 523. Suitable examples of such compounds to be used herein are tetracetyl
ethylene diamine (TAED), sodium 3,5,5 trimethyl hexanoyloxybenzene sulphonate, diperoxy
dodecanoic acid as described for instance in US 4 818 425 and nonylamide of peroxyadipic
acid as described for instance in US 4 259 201 and n-nonanoyloxybenzenesulphonate
(NOBS). Also suitable are N-acyl caprolactam selected from the group consisting of
substituted or unsubstituted benzoyl caprolactam, octanoyl caprolactam, nonanoyl caprolactam,
hexanoyl caprolactam, decanoyl caprolactam, undecenoyl caprolactam, formyl caprolactam,
acetyl caprolactam, propanoyl caprolactam, butanoyl caprolactam pentanoyl caprolactam
or mixtures thereof. A particular family of bleach activators of interest was disclosed
in EP 624 154, and particularly preferred in that family is acetyl triethyl citrate
(ATC). Acetyl triethyl citrate has the advantage that it is environmentally friendly
as it eventually degrades into citric acid and alcohol. Furthermore, acetyl triethyl
citrate has a good hydrolytical stability in the composition upon storage and it is
an efficient bleach activator.
[0181] The compositions according to the present invention may comprise up to 30%, preferably
from 1% to 20%, and more preferably from 2% to 10% by weight of the total composition
of a bleach activator.
Builders
[0182] The compositions according to the present invention may further comprise a builder
system. Any conventional builder system known in the art is suitable for use herein.
Suitable builders for use herein include derivatives of succinic acid of the formula
R-CH(COOH)CH
2(COOH) wherein R is C
10-20 alkyl or alkenyl, preferably C
12-16 alkyl or alkenyl, or wherein R can be substituted with hydroxyl, sulpho sulphoxyl
or sulphone substituents. Specific examples include lauryl succinate, myristyl succinate,
palmityl succinate, 2-dodecenylsuccinate, 2-tetradecenyl succinate. Succinate builders
are preferably used in the form of their water-soluble salts, including sodium, potassium,
ammonium and alkanolammonium salts.
[0183] Other suitable builders are oxodisuccinates and mixtures of tartrate monosuccinic
and tartrate disuccinic acid such as described in US 4,663,071.
[0184] Further suitable builders for use herein are fatty acid builders including saturated
or unsaturated C
10-18 fatty acids, as well as the corresponding soaps. Preferred saturated species have
from 12 to 16 carbon atoms in the alkyl chain. The preferred unsaturated fatty acid
is oleic acid.
[0185] The compositions herein may comprise up to 10%, preferably from 1% to 7% by weight
of the total composition of a builder system.
Radical scavengers:
[0186] The compositions herein may comprise a radical scavenger as another optional ingredient.
Suitable radical scavengers for use herein include the well-known substituted mono
and di hydroxy benzenes and derivatives thereof, alkyl- and aryl carboxylates and
mixtures thereof. Preferred radical scavengers for use herein include di-tert-butyl
hydroxy toluene (BHT), p-hydroxy-toluene, hydroquinone (HQ), di-tert-butyl hydroquinone
(DTBHQ), mono-tert-butyl hydroquinone (MTBHQ), tert-butyl-hydroxy anysole (BHA), p-hydroxy-anysol,
benzoic acid, 2,5-dihydroxy benzoic acid, 2,5-dihydroxyterephtalic acid, toluic acid,
catechol, t-butyl catechol, 4-allyl-catechol, 4-acetyl catechol, 2-methoxyphenol,
2-ethoxy-phenol, 2-methoxy-4-(2-propenyl)phenol, 3,4-dihydroxy benzaldehyde, 2,3-dihydroxy
benzaldehyde, benzylamine, 1,1,3-tris(2-methyl-4-hydroxy-5-t-butylphenyl) butane,
tert-butyl-hydroxy-anyline, p-hydroxy anyline as well as n-propyl-gallate. Highly
preferred for use herein is di-tert-butyl hydroxy toluene, which is for example commercially
available from SHELL under the trade name IONOL CP® and/or tert-butyl-hydroxy anysole
and/or propyl gallate. These radical scavengers further contribute to the stability
of the compositions herein.
[0187] Typically, the compositions according to the present invention may comprise up to
5%, preferably from 0.002% to 1.5% by weight and more preferably from 0.002% to 0.5%
by weight of the total composition of a radical scavenger.
Examples
[0188] The following examples will further illustrate the present invention. The compositions
are made by combining the listed ingredients in the listed proportions (weight % unless
otherwise specified). The following Examples are meant to exemplify compositions used
in a process according to the present invention but are not necessarily used to limit
or otherwise define the scope of the present invention.
Compositions (weight %) |
I |
II |
III |
IV |
V |
VI |
Hydrogen peroxide |
4.0 |
4.0 |
--- |
6.0 |
4.0 |
4.0 |
PVNO |
0.5 |
0.4 |
0.2 |
0.5 |
1.0 |
2.0 |
PVPVI |
--- |
--- |
--- |
0.5 |
--- |
--- |
PV/AA |
--- |
--- |
0.3 |
--- |
--- |
--- |
PVP |
--- |
--- |
--- |
--- |
0.1 |
--- |
Ethanol |
3.0 |
2.0 |
1.0 |
3.0 |
3.0 |
3.0 |
PnB |
--- |
1.0 |
0.5 |
--- |
--- |
--- |
PA |
--- |
0.1 |
0.2 |
0.1 |
--- |
0.1 |
Dioctyl sodium |
1.0 |
--- |
0.3 |
--- |
2.5 |
5.0 |
sulphosuccinate |
|
|
|
|
|
|
Disodium lauryl |
--- |
2.5 |
0.7 |
--- |
0.5 |
--- |
sulphosuccinate |
|
|
|
|
|
|
Disodium laureth |
--- |
--- |
1.0 |
3.0 |
--- |
--- |
sulphosuccinate |
|
|
|
|
|
|
Disodium lauramido |
0.5 |
--- |
--- |
--- |
--- |
--- |
MEA sulphosuccinate |
Sodium lauryl sulfate |
--- |
0.5 |
--- |
--- |
--- |
--- |
BHT |
0.01 |
0.01 |
0.02 |
0.01 |
--- |
0.01 |
AMCP |
--- |
--- |
--- |
--- |
0.5 |
--- |
Chelant* |
0.2 |
0.2 |
0.2 |
0.2 |
0.3 |
0.3 |
Na CnAS |
--- |
--- |
--- |
3.0 |
0.5 |
--- |
Salicylic Acid |
0.5 |
0.5 |
0.5 |
0.5 |
--- |
0.5 |
Propyl Gallate |
--- |
--- |
--- |
--- |
1.0 |
--- |
NaOH |
0.16 |
0.16 |
0.16 |
0.16 |
0.06 |
0.26 |
Water and minors |
Balance |
Balance |
Balance |
Balance |
Balance |
Balance |
up to pH |
6 |
6 |
6 |
6 |
3.5 |
8 |
PVP is Poly Vinyl Pyrrolidone |
PVNO is Poly(4-Vinylpyridine-N-Oxide) (Mw 20,000) commercially available from Reilly. |
PV/AA is N-vinylpyrrolidone and Acrylic Acid copolymer commercially available under
the trade name Sokalan® PG 310. |
PVPVI is N-vinylpyrrolidone and N-vinylimidazole co-polymer commercially available
under the trade name Sokalan® PG55. |
Sarcosinate is Sodium N-Lauroyl Sarcosinate commercially available from Croda under
the commercial name of Crodasinic® LS 30. |
Dioctyl sodium sulphosuccinate is commercially available from Cytec under the trade
name Aerosol OT®. |
Disodium lauryl sulphosuccinate is commercially available from Witco under the trade
name Rewopol SBF12®. |
Disodium lauramido MEA sulphosuccinate is available from Witco under the trade name
Rewopol SBC212P®. |
PnB is propylene glycol n-butyl ether commercially available from Arco under the trade
name Arcosolv® PNB. |
BHT is butylated hydroxy toluene. |
AMCP is acrylic/maleic based copolymers commercially available under the trade nme
Sokalan CP5®. |
Chelant* is a phosphonate chelant available under the trade name DEQUEST® Na CnAS
is sodium alkyl sulphate. |
PA is an ethoxylated tetraethylenepentamine, average molecular weight 12,000. |
[0189] The compositions exemplified above are preferably packaged in an electrically operated
spraying device.
[0190] The compositions in the examples above when employed in a process according to the
present invention provides a mucous membranes non irritation benefit.