[0001] This invention pertains to personal cleansing compositions for personal washing,
which compositions comprise quaternary amine polymers.
[0002] Liquid and solid bar compositions based on soap and/or synthetic surfactants are
commonly used for cleansing the human body. A wide variety of additives have been
suggested for inclusion in said compositions. Some enhance the physical properties,
e.g., bar hardness, wear rate, resistance to water. Others enhance the in-use properties
such as lather characteristics and some impact on the impression the composition has
on the skin both during washing (bar feel) and afterwards.
[0003] It has been discovered that the addition of certain polymeric materials to such liquids
and bars can have a beneficial skin mildness effect for the user without deleteriously
affecting other product properties. In general, the useful polymers should be soluble
or dispersible in water to a level of at least 1% by weight, preferably at least 5%
by weight at 25°C. Suitable polymers are high molecular weight materials (mass-average
molecular weight determined, for instance, by light scattering, being generally from
20,000 to 5,000,000, preferably from 50,000 to 4,000,000, and more preferably from
500,000 to 3,000,000) and preferably have a thickening ability such that a 1% dispersion
of the polymer in water at 20°C exceeds 1 Pa·S (10 poise) at a shear rate of 10⁻ sec-¹.
Useful polymers are the cationic, nonionic, amphoteric, and anionic polymers useful
in the cosmetic field. Preferred are cationic and nonionic resins and mixtures thereof.
Highly preferred are the cationic resins.
[0004] To date the preferred cationic polymers include cationic guar gums such as hydroxyproxyltrimethylammonium
guar gum. However, it has been discovered that there is an odor problem with using
such "cationic trimethylamine quaternized polymers" in compositions having a pH of
7.5 or above. They break down and release odoriferous labile amines.
[0005] Odoriferous labile amines are detectable at levels as low as 2 ppb. Personal cleansing
products containing odoriferous quaternary amine polymers are disclosed in one or
more of the following patents:
Pat. No. |
Date |
Inventor(s) |
US-A-3,761,418 |
9/1973 |
Parran, Jr.; |
US-A-4,234,464 |
11/1980 |
Morshauser; |
US-A-4,061,602 |
12/1977 |
Oberstar et al.; |
US-A-4,472,297 |
9/1984 |
Bolich et al.; |
US-A-4,491,539 |
1/1985 |
Hoskins et al.; |
US-A -4,540,507 |
9/1985 |
Grollier; |
US-A-4,673,525 |
6/1987 |
Small et al.; |
US-A-4,704,224 |
11/1987 |
Saud; and |
JP-A-J57105 |
6/30/82 |
Pola. |
EP-A-0308189 and WO-A-90/15589 disclose personal cleansing compositions comprising
surfactants and cationic polymers.
[0006] The present invention relates to a personal cleansing product in the form of a toilet
bar made with a selected quaternized cationic polymer wherein each quaternary ammonium
moiety is derived from a bulky amine.
[0007] An object of the present invention is to provide an improved toilet soap bar comprising
a cationic polymeric skin conditioning agent which does not comprise a potential odoriferous
amine moiety.
[0008] Other objects will become apparent from the detailed description below.
[0009] The present invention comprises basic personal cleansing compositions comprising
from 0.2% to 5% by weight selected cationic polymer wherein each cationic group is
derived from a "bulky" amine. Compared to personal cleansing compositions which are
prepared with cationic polymers which comprise a potential labile amine moiety, e.g.,
trimethylamine-based cationic polymers, the compositions of this invention consistently
exhibit superior odor stability due to the selected "bulky amine" cationic polymers.
The term "basic personal cleansing compositions" as used herein means that the composition
has a pH of at least 8.5.
[0010] While not being bound to any theory, illustrations A and B show the theoretical degradation
of labile amine containing cationic polymers in a basic environment. Generic degradation:
(A) Polymer-CHR-CH₂-N+(CH₃)₃ ----> polymer-CR=CH₂ + N(CH₃)₃ where R can be meant to
represent any group (e.g., H, OH, alkyl chain); e.g.,
(B) Guar-CH₂-O-CH₂-CH(OH)-CH₂-N+(CH₃)₃ ----> Guar-CH₂-O-CH₂-C(OH)=CH₂ + N(CH₃)₃
[0011] The extent of this degradation and the effect of it on product odor were not appreciated
heretofore. The level of hydration required to cause a problem is very low and therefore
it is extremely difficult to detect and identify the offending material.
The Bulky Amine Cationic Polymers
[0012] Bulky amine polymers are defined herein as POLYMERS with the following non-labile
cationic functional group:
[0013] (I) (POLYMER)-CR¹H-CRR³-
R⁴R⁵R⁶ wherein R¹-R³ is H or any other substituent and R⁴, R5 and R⁶ combine with
N to form an amine with less odor impact than trimethylamine, at least one of R⁴,
R⁵ and R⁶ is alkyl having a chain length of from 2 to 24 carbon atoms, or an alkoxy
alkyl group containing from 2 to 12 carbon atoms or a hydroxy ethyl group.
[0014] Some examples of preferred bulky amine polymers are cationic guar gums having the
following structures:
[0015] An example of a bulky amine hydroxyethyl cellulose (HEC) polymer is:
[0016] These "bulky amine" groups add additional complexity to the preparation of the polymer
and the finished compositions. They would not be used, except for the existence of
the odor problem with the trimethylamine derived polymer. They may also have improved
skin conditioning benefits.
[0017] The composition of this invention comprises from 0.2% to 5%, preferably from 0.5%
to 2% by weight, of the cationic polymer. The average molecular weight of the preferred
cationic guar gum is from 50,000 to 1,000,000, preferably from 100,000 to 500,000,
and more preferably from 250,000 to 400,000 and the degree of substitution is from
0.5 to 4, preferably from 1 to 2.5. Some preferred cationic guars (galactomannans)
are disclosed in US-A-4,758,282, Stober et al., issued July 19, 1988. The cationic
guar gum polymers disclosed in EP-A-367335, published 09.05.90, would be suitable
when the cationic groups are substituted with bulky amine groups.
[0018] Other bulky amine cationic polymeric skin conditioning agents useful in the present
invention have molecular weights of from 1,000 to 3,000,000. Useful polymers are selected
from the group consisting of:
(I) cationic polysaccharides;
(II) cationic copolymers of saccharides and synthetic cationic monomers, and
(III) synthetic polymers selected from the group consisting of any other synthetic
polymer containing pendant quaternary amine groups, e.g., quaternized silicones and
quaternized methacrylates.
[0019] Specific examples of members of the bulky amine cationic polysaccharide class include
the cationic hydroxyethyl cellulose, e.g., LM-200 (RTM) made by Union Carbide Corporation.
[0020] The cationic copolymers of saccharides and synthetic cationic monomers useful in
the present invention encompass those containing the following saccharides: glucose,
galactose, mannose, arabinose, xylose, fucose, fructose, glucosamine, galactosamine,
glucuronic acid, galacturonic acid, and 5 or 6 membered ring polyalcohols. Also included
are hydroxymethyl, hydroxyethyl and hydroxypropyl derivatives of the above sugars.
[0021] The boiling points of some exemplary substituted amines are set out in Table 1.
TABLE 1
Eliminated Amine |
Boiling Point/°C |
Labile Amine |
|
Trimethylamine |
3 |
Bulky Amine |
|
Dimethylethylamine |
36 |
Methyldiethylamine |
63 |
Triethylamine |
89 |
Dimethyloctylamine |
195 |
Dimethylcyclohexylamine |
158 |
Dimethylbenzylamine |
183 |
Dimethylethanolamine |
133 |
Diethylethanolamne |
161 |
[0022] For a homologous series of compounds (e.g., tri-substituted amines), volatility decreases
with increasing molecular weight. Volatility is dependent, among other things on the
boiling point of the neat component. Odor impact also has a strong dependence on the
amount of volatilized material that reaches the nose. Table 1 demonstrates the significant
effect which adding "bulky" groups has on volatility and, hence, odor impact of amines.
For pure hydrocarbon substitution, the larger the alkyl chains (or the larger the
degree of long chain substitution) the lower the odor impact. Thus, the quaternised
cationic polymers used in the present invention have an ammonium moiety derived from
bulky amines having boiling points of greater than 80°C.
The Surfactant Component
[0023] The surfactant component of the present compositions comprises alkali metal soap
or mixtures of alkali metal soap and synthetic surfactant.
[0024] Alkali metal soaps can be made by direct saponification of the fats and oils or by
the neutralization of the free fatty acids which are prepared in a separate manufacturing
process. Particularly useful are the sodium and potassium salts of the mixtures of
fatty acids derived from coconut oil and tallow, i.e., sodium and potassium tallow
and coconut soaps.
[0025] The term "tallow" is used herein in connection with fatty acid mixtures which typically
have an approximate carbon chain length distribution of 2.5% C₁₄, 29% C₁₆, 23% C₁₈,
2% palmitoleic, 41.5% oleic and 3% linoleic. (The first three fatty acids listed are
saturated.) Other mixtures with similar distribution, such as the fatty acids derived
from various animal tallows. The tallow can also be hardened (i.e., hydrogenated)
to convert part or all of the unsaturated fatty acid moieties to saturated fatty acid
moieties.
[0026] When the terms "coconut oil" and "coconut fatty acid" (CNFA) are used herein, they
refer to fatty acid mixtures which typically have an approximate carbon chain length
distribution of about 8% C₇, 7% C₁₀, 48% C₁₂, 17% C₁₄, 9% C₁₆, 2% C₁₈, 7% oleic, and
2% linoleic. (The first six fatty acids listed are saturated.) Other sources having
similar carbon chain length distribution such as palm kernel oil and babassu kernel
oil are included with the terms coconut oil and coconut fatty acid.
[0027] A preferred soap bar of this invention comprises soap as its primary or sole surfactant.
It also contains as an essential ingredient a skin conditioning amount of a hydrated,
cationic guar gum provided by a cationic guar gum polymer. This polymer is uniformly
distributed in the soap bar matrix without affecting the smooth feel of the dry or
wet bar.
[0028] Another preferred toilet bar is based on mild synthetic surfactants as disclosed
in US-A-4,673,525, Small et al., issued June 16, 1987.
[0029] Synthetic detergents can also be present in compositions herein. Preferred types
of synthetic detergents are of the anionic or nonionic type. Examples of anionic synthetic
detergents are the salts of organic sulfuric reaction products such as
alkyl sulfates having the formula R₂₄OSO₃M;
alkyl sulfonates having the formula R₂₄SO₃M;
alkyl ether sulfates having the formula R₂₄(OC₂H₄)xOSO₃M;
alkyl mono glyceride sulfonates having the formula
and alkyl benzene sulfonates having the formula
[0030] In the above formulae, R₂₄ is a straight or branched chain alkyl of from 8 to 24
carbon atoms; M is an alkali metal or ammonium ion; x is a number of from 1 to 10;
y is a number of from 1 to 4; and X is selected from the group consisting of chlorine,
hydroxyl, and -SO₃M, at least one X in each molecule being -SO₃M. Examples of nonionic
synthetic detergents are ethoxylated fatty alcohols (e.g., the reaction product of
one mole of coconut fatty alcohol with from 3 to 30 moles of ethylene oxide) and fatty
acid amides such as coconut fatty acid monoethanolamide and stearic acid diethanolamide.
Although it may be desirable in some instances to incorporate synthetic detergents
into the compositions of the present invention, the compositions herein can be free
of synthetic detergents. Preferred are the mild synthetic surfactants disclosed in
US-A-4,673,525, Small et al., issued June 16, 1987.
Insoluble Alkaline Earth Metal Soaps
[0031] Insoluble alkaline earth metal soaps such as calcium stearate and magnesium stearate
can also be incorporated into compositions of the present invention at levels up to
30% by weight. These materials are particularly useful in toilet bars in which synthetic
detergents are present in that they tend to reduce the relatively high solubility
which such bars normally have. These alkaline earth metal soaps are not included within
the term "soap" as otherwise used in this specification. The term "soap" as used herein
refers to the alkali metal soaps.
Optional Components
[0032] The compositions of the present invention can contain optional components such as
those conventionally found in personal cleansing products. Conventional antibacterial
agents can be included in the present compositions at levels of from 0.5% to 4% by
weight. Typical antibacterial agents which are suitable for use herein are 3,4-di-
and 3,4',5-tribromosalicylanilides; 4,4'-dichloro-3-(trifluoromethyl)carbanilide;
3,4,4'-trichlorocarbanilide and mixtures of these materials. Conventional nonionic
emollients can be included as additional skin conditioning agents in the compositions
of the present invention at levels up to 40%, preferably at levels of from 1% to 25%
by weight. Such materials include, for example mineral oils, paraffin wax having a
melting point of from about 37.8°C (about 100°F.), fatty sorbitan esters (see US-A-3,988,255,
Seiden, issued Oct. 26, 1976 , lanolin and lanolin derivatives, esters such as isopropyl
myristate and triglycerides such as coconut oil or hydrogenated tallow.
[0033] Free fatty acid such as coconut fatty acid can be added to the compositions herein
to improve the volume and quality (creaminess) of the lather produced by the compositions
herein.
[0034] Conventional perfumes, dyes and pigments can also be incorporated into compositions
of the invention at levels up to 5% by weight. Perfumes are preferably used at levels
of from 0.5% to 3% by weight and dyes and pigments are preferably used at levels of
from 0.001% to 0.5% by weight.
Bar Preparation
[0035] Toilet bars of the present invention can be prepared in any conventional manner.
E.g., the bulky amine cationic polymer can be added to noodles of the base soap mixture
containing from 10% to 22% moisture in an amalgamator. Any optional ingredients such
as perfumes, dyes, etc., are also added to the amalgamator. The mixture is processed
in the amalgamator and milled in the conventional manner under conventional conditions.
It is then extruded (plodded) into logs for cutting and stamping into toilet bars.
[0036] In a method of making the bar of the present invention, the bulky amine cationic
polymer is added to soap noodle and mixed in the soap mixing steps of the soap bar
making process.
[0037] The soap bars of this invention contain up to 15% by weight of a synthetic surfactant.
If a synthetic surfactant is included, a mild one is preferred. A mild synthetic surfactant
is defined herein as one which does relatively little damage to the barrier function
of the stratum corneum. The mild surfactant is preferably used at a level of 2-15%
by weight. The fatty acid soap and mild surfactant mixture preferably has a ratio
of 2.5:1 to 37:1, preferably from 2.5:1 to 14:1, and most preferably from 6.5:1 to
14:1, soap:synthetic.
[0038] A preferred soap bar of this invention also contains from 2% to 17% by weight moisturizer,
preferably one selected from glycerin and free fatty acid or mixtures thereof. The
more preferred bar of this invention contains at least 4% by weight moisturizer.
[0039] Some preferred mild synthetic surfactants useful in this invention include alkyl
glyceryl ether sulfonate (AGS), anionic acyl sarcosinates, methyl acyl taurates, N-acyl
glutamates, alkyl glucosides, acyl isethionates, alkyl sulfosuccinate, alkyl phosphate
esters, ethoxylated alkyl phosphate esters, alkyl ether sulfates, methyl glucose esters,
protein condensates, mixtures of alkyl ether sulfates and alkyl amine oxides, betaines,
sultaines, and mixtures thereof. Included in the surfactants are the alkyl ether sulfates
with 1 to 12 ethoxy groups, especially ammonium and sodium lauryl ether sulfates.
Alkyl chain lengths for these surfactants are C₈-C₂₂, preferably C₁₀-C₁₈. The most
preferred mild surfactant is sodium CN AGS.
[0040] The following examples are presented by way of illustration only.
EXAMPLES 1 AND 2
[0041] Toilet bars made using the ingredients set out in Table 2.
[0042] In general, making procedures common to those used for conventional toilet soap bar
making are employed.
Mixing/Milling Steps
Polymer Addition Step
[0043] Plodded soap noodles are conveyed to a continuous mixer (CM) where approximately
1.0 part of cationic polymer is introduced, mixed, and plodded with the soap noodles.
Uniform distribution during this addition and mixing step is important for acceptable
bar feel performance. The polymer/soap noodles (generic noodles) are conveyed to milling.
Generic Milling Step
[0044] Two four-roll soap mills (feed, stationary, middle, and top rolls) are used in this
step. This is a split milling (two set of mills are used in parallel) process to obtain
a homogeneous mix. Efficient milling is needed in this intimate mixing step.
Dry Mixing Step
[0045] The generic noodles are conveyed to a second process system continuous mixer (CM)
for the addition and mixing of other minors. This mix is plodded and conveyed to the
third process CM.
Wet Mixing Step
[0046] The perfume and NaCl/sodium ethylene diamine tetra acetate (EDTA) solution are added
and mixed in this wet mixing (CM) step. This finished soap formula is then plodded
into soap noodles and conveyed via a transport plodder to a final milling step.
[0047] The mixture is milled using a four-roll mill, plodded, and then stamped into toilet
bars of any convenient size and shape. The resulting bars are tested for odor. The
bars have a pH of 9.5 in a 1% aqueous solution.
Odor Test Procedure
Polymer Cleaning
[0048] Stock samples of polymer are cleaned by swelling the polymer with water followed
by extensive aeration. These "cleaned" polymers are fairly amine odor-free. After
long storage times, some of these polymers exhibited a slight, but recognizable amine
odor. Bulky modified polymers required little, if any, cleansing prior to testing/evaluating.
Effects Testing Procedures
[0049] The general procedure followed in evaluating the effects of pH on polymer or final
product odor was to place about 200 mg of the clean polymer (or a finished product)
in a screw-top vial (8 dram) and then add the test solution (buffers at pH values
of 7, 10, or 14). The vials are capped and the odor allowed to build up for a short
amount of time. Odor is evaluated via olfactory sensing by a panel of experts.
[0050] The pH buffers are commercially available buffers:
pH 7 - KH₂PO₄-NaOH
pH 10 - H₃BO₃-KOH
pH 14 - 1N NaOH.
[0051] JR-400 (RTM) made by Union Carbide Corporation and JAGUAR C-15 (RTM) made by Hi-Tek
Polymers, Inc., are outside the selected polymers of this invention.
1. A personal cleansing composition in the form of a toilet bar comprising from 5% to
90% by weight of surfactant selected from alkali metal soap and mixtures of alkali
metal soap and synthetic surfactant wherein the synthetic surfactant is present in
a level of up to 15% by weight; and from 0.2% to 5% by weight of a quaternised cationic
polymer wherein each ammonium moiety has the formula:
-CR¹H-CRR³-NR⁴R⁵R⁶
wherein R¹-R³ is H or any other substituent and at least one of R⁴, R⁵ and R⁶ is alkyl
having a chain length of from 2 to 24 carbon atoms, or an alkoxy alkyl group containing
from 2 to 12 carbon atoms or a hydroxy ethyl group; and wherein each quaternary ammonium
moiety is derived from a bulky amine having a boiling point of greater than 80 °C
whereby the cationic polymer is essentially free of groups forming odiferous amines
in a basic environment; and wherein said composition has a pH of at least 8.5 in a
1% aqueous solution.
2. The personal cleansing composition of Claim 1 wherein said cationic polymer is a cationic
guar gum.
3. The personal cleansing composition of Claim 1 wherein said cationic polymer is selected
from the group consisting of :
mixtures thereof; and wherein said polymer has a molecular weight of from 50,000
to 1,000,000.
4. The personal cleansing composition of Claim 1 wherein said cationic polymer is present
at from 0.5% to 4% by weight.
5. The personal cleansing composition of Claim 1 wherein said cationic polymer has a
molecular weight of from 1,000 to 3,000,000 and is selected from the group consisting
of:
(I) cationic polysaccharides;
(II) cationic copolymers of saccharides and synthetic cationic monomers, and
(III) synthetic polymers selected from the group consisting of:
(A) quaternized silicones,
(B) quaternized methacrylates; and
(IV) mixtures thereof.
6. A process for preparing the personal cleansing composition of Claim 1 comprising the
steps of:
(a) forming a mixture of said cationic polymer and alkali metal soap mix noodles wherein
said polymer is present in said mixture at a level to provide from 0.2% to 5% by weight
of said polymer in said composition; said mixture containing from 6% to 15% moisture;
(b) milling said mixture into a uniform mixture;
(c) plodding said uniform mixture;
(d) extruding said milled and plodded mixture; and
(e) stamping said extruded mixture into toilet bars.
7. The personal cleansing composition of Claim 1 wherein said composition contains from
2% to 15% by weight of synthetic surfactant selected from alkyl glyceryl ether sulfonates,
anionic acyl sarcosinates, methyl acyl taurates, N-acyl glutamates, alkyl glucosides,
acyl isethionates, alkyl sulfosuccinates, alkyl phosphate esters, ethoxylated alkyl
phosphate esters, methyl glucose esters, protein condensates, mixtures of ethoxylated
alkyl sulfates and alkyl amine oxides, betaines, sultaines, the alkyl ether sulfates
with 1 to 12 ethoxy groups, and mixtures thereof, wherein said synthetic surfactant
contains alkyl chains containing from 8 to 22 carbon atoms.
8. The process of Claim 7 wherein said composition contains from about 5% to 10% by weight
of a C₈-C₁₈ alkyl glyceryl ether sulfonate.
1. Körperreinigungszusammensetzung in der Form eines Toilettenriegels, umfassend 5 Gew.-%
bis 90 Gew.-% von einem grenzflächenaktiven Mittel, welches unter Alkalimetallseife
und Gemischen aus Alkalimetallseife und synthetischem grenzflächenaktivem Mittel ausgewählt
ist, wobei das synthetische grenzflächenaktive Mittel in einer Menge bis zu 15 Gew.-%
vorhanden ist; und 0,2 Gew.-% bis 5 Gew.-% von einem quaternierten kationischen Polymer,
wobei jeder Ammoniumrest die Formel:
-CR¹H-CRR³-NR⁴R⁵R⁶
besitzt, worin R¹ bis R³ für H oder jeden beliebigen anderen Substituenten stehen
und mindestens einer der Reste R⁴, R⁵ und R⁶ Alkyl mit einer Kettenlänge von 2 bis
24 Kohlenstoffatomen oder eine Alkoxyalkylgruppe mit 2 bis 12 Kohlenstoffatomen oder
eine Hydroxyethylgruppe darstellt; und wobei sich jeder quaternäre Ammoniumrest aus
einem sperrigen Amin mit einem Siedepunkt von mehr als 80°C herleitet, wodurch das
kationische Polymer im wesentlichen von Gruppen frei ist, welche in einer basischen
Umgebung Amine ausbilden, die einen Geruch aufweisen; und wobei die genannte Zusammensetzung
in 1%iger wäßriger Lösung einen pH-Wert von mindestens 8,5 aufweist.
2. Körperreinigungszusammensetzung nach Anspruch 1, worin das genannte kationische Polymer
ein kationisches Guargummi ist.
3. Körperreinigungszusammensetzung nach Anspruch 1, worin das genannte kationische Polymer
von der Gruppe ausgewählt ist, welche aus:
und Gemischen hievon besteht; und wobei das genannte Polymer ein Molekulargewicht
von 50.000 bis 1,000.000 aufweist.
4. Körperreinigungszusammensetzung nach Anspruch 1, wobei das genannte kationische Polymer
in Mengen von 0,5 Gew.-% bis 4 Gew.-% vorhanden ist.
5. Körperreinigungszusammensetzung nach Anspruch 1, wobei das genannte kationische Polymer
ein Molekulargewicht von 1.000 bis 3,000.000 aufweist und von der Gruppe ausgewählt
ist, welche aus:
(I) kationischen Polysacchariden;
(II) kationischen Copolymeren von Sacchariden und synthetischen kationischen Monomeren;
und
(III) synthetischen Polymeren, welche von der aus:
(A) quaternierten Siliconen,
(B) quaternierten Methacrylaten bestehenden Gruppe ausgewählt ist; und
(IV) Gemischen hievon besteht.
6. Verfahren zur Herstellung der Körperreinigungszusammensetzung nach Anspruch 1, umfassend
die Schritte von:
(a) Ausbilden eines Gemisches aus dem genannten kationischen Polymer und Alkalimetallseifengemischnudeln,
wobei das genannte Polymer im genannten Gemisch in einer Menge vorhanden ist, um 0,2
Gew.-% bis 5 Gew.-% des genannten Polymers in der genannten Zusammensetzung zu gewährleisten;
welches Gemisch 6% bis 15% Feuchtigkeit aufweist;
(b) Pilieren des genannten Gemisches zu einem einheitlichen Gemisch;
(c) Strangpressen des genannten einheitlichen Gemisches;
(d) Extrudieren des genannten pilierten und stranggepreßten Gemisches; und
(e) Prägen des genannten extrudierten Gemisches zu Toilettenriegeln.
7. Körperreinigungszusammensetzung nach Anspruch 1, wobei die genannte Zusammensetzung
2 Gew.-% bis 15 Gew.-% an synthetischem grenzflächenaktivem Mittel enthält, welches
unter Alkylglycerylethersulfonaten, anionischen Acylsarcosinaten, Methylacyltauraten,
N-Acylglutamaten, Alkylglucosiden, Acylisethionaten, Alkylsulfosuccinaten, Alkylphosphatestern,
ethoxylierten Alkylphosphatestern, Methylglucoseestern, Proteinkondensaten, Gemischen
von ethoxylierten Alkylsulfaten und Alkylaminoxiden, Betainen, Sultainen, den Alkylethersulfaten
mit 1 bis 12 Ethoxygruppen und Gemischen hievon ausgewählt ist, wobei das genannte
synthetische grenzflächenaktive Mittel Alkylketten mit 8 bis 22 Kohlenstoffatomen
aufweist.
8. Verfahren nach Anspruch 7, wobei die genannte Zusammensetzung 5 Gew.-% bis 10 Gew.-%
eines C₈-C₁₈-Alkylglycerylethersulfonates enthält.
1. Composition pour le nettoyage corporel, sous la forme d'un pain de toilette comprenant
de 5 à 90 % en poids d'un tensioactif choisi parmi les savons de métal alcalin et
les mélanges de savons de métal alcalin et de tensioactifs synthétiques, le tensioactif
synthétique étant présent en une quantité allant jusqu'à 15 % en poids ; et de 0,2
à 5 % en poids d'un polymère cationique quaternisé dans lequel chaque fragment ammonium
a la formule :
-CR¹H-CRR³-NR⁴R⁵R⁶
dans laquelle R¹ à R³ sont H ou un autre substituant quelconque et au moins l'un des
groupes R⁴, R⁵ et R⁶ est un groupe alkyle ayant de 2 à 24 atomes de carbone, un groupe
alcoxyalkyle contenant de 2 à 12 atomes de carbone ou un groupe hydroxyéthyle ; et
où chaque fragment ammonium quaternaire dérive d'une amine volumineuse ayant un point
d'ébullition supérieur à 80°C, grâce à quoi le polymère cationique est pratiquement
exempt de groupes formant des amines odoriférantes dans un environnement basique ;
et dans laquelle ladite composition a un pH d'au moins 8,5 en solution aqueuse à 1
%.
2. Composition pour le nettoyage corporel selon la revendication 1, dans laquelle ledit
polymère cationique est une gomme de guar cationique.
3. Composition pour le nettoyage corporel selon la revendication 1, dans laquelle ledit
polymère cationique est choisi dans l'ensemble constitué par :
et leurs mélanges ;
et dans laquelle ledit polymère a une masse moléculaire comprise entre 50.000 et 1.000.000.
4. Composition pour le nettoyage corporel selon la revendication 1, dans laquelle ledit
polymère cationique est présent à raison de 0,5 à 4 % en poids.
5. Composition pour le nettoyage corporel selon la revendication 1, dans laquelle ledit
polymère cationique a une masse moléculaire comprise entre 1.000 et 3.000.000 et est
choisi dans l'ensemble constitué par :
i) les polysaccharides cationiques ;
ii) les copolymères cationiques de saccharides et de monomères cationiques synthétiques
; et
iii) les polymères synthétiques choisis dans l'ensemble constitué par :
a) les silicones quaternisées,
b) les méthacrylates quaternisés ; et
iv) leurs mélanges.
6. Procédé pour préparer la composition pour le nettoyage corporel conforme à la revendication
1, comprenant les étapes consistant à :
a) former un mélange dudit polymère cationique et desdites nouilles de mélange de
savons de métal alcalin, dans lequel ledit polymère est présent dans ledit mélange
en une quantité suffisante pour que le polymère représente de 0,2 à 5 % en poids de
ladite composition ; ledit mélange contenant de 6 à 15 % d'humidité ;
b) broyer ledit mélange en un mélange uniforme ;
c) boudiner ledit'mélange uniforme ;
d) extruder ledit mélange broyé et boudiné ; et
e) emboutir ledit mélange extrudé en pains de toilette.
7. Composition pour le nettoyage corporel selon la revendication 1, dans laquelle ladite
composition contient de 2 à 15 % en poids d'un tensioactif synthétique choisi parmi
les alkylglycéryléthersulfonates, les acylsarcosinates anioniques, les méthylacyltaurates,
les N-acylglutamates, les alkylglucosides, les acyliséthionates, les alkylsulfosuccinates,
les esters alkylphosphates, les esters alkylphosphates éthoxylés, les esters méthyl-glucose,
les produits de condensation protéiniques, les mélanges d'alkylsulfates éthoxylés
et d'oxydes d'alkylamines, les bétaïnes, les sultaïnes, les alkylsulfates éthoxylés
ayant de 1 à 12 groupes éthoxy, et leurs mélanges, dans laquelle ledit tensioactif
synthétique contient des chaînes alkyle contenant de 8 à 22 atomes de carbone.
8. Procédé selon la revendication 7, dans lequel ladite composition contient de 5 à 10
% en poids d'un (alkyl en C₈-C₁₈)glycéryléthersulfonates.