(19)
(11)EP 3 517 594 A1

(12)EUROPEAN PATENT APPLICATION

(43)Date of publication:
31.07.2019 Bulletin 2019/31

(21)Application number: 18153132.8

(22)Date of filing:  24.01.2018
(51)International Patent Classification (IPC): 
C11D 1/00(2006.01)
C11D 3/382(2006.01)
C11D 11/00(2006.01)
C11D 3/20(2006.01)
C11D 3/50(2006.01)
C11D 17/00(2006.01)
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA MD TN

(71)Applicant: The Procter & Gamble Company
Cincinnati, OH 45202 (US)

(72)Inventors:
  • BIANCHETTI, Giulia Ottavia
    1853 Strombeek-Bever (BE)
  • CRESTINI, Claudia
    00173 Rome (IT)
  • PERFETTI, Marco
    80129 Naples (IT)

(74)Representative: Yorquez Ramirez, Maria Isabel et al
Procter & Gamble Technical Centres Limited Whitley Road Longbenton
Newcastle upon Tyne NE12 9TS
Newcastle upon Tyne NE12 9TS (GB)

  


(54)FABRIC TREATMENT COMPOSITIONS


(57) . A use of a liquid fabric treatment composition comprising tannins to improve perfume deposition wherein said composition comprises by weight of the composition
- from 0.01 % to 5% of tannins;
- from 0.1% to 50% of surfactant;
- from 0.1 % to 7% of dispersed perfume.


Description

FIELD OF INVENTION



[0001] The invention relates to the use of fabric treatment compositions comprising tannins to improve perfume deposition onto fabrics.

BACKGROUND OF THE INVENTION



[0002] Fabric treatment compositions used in the laundry process provide benefits to fabrics such as providing a pleasant smell. Such pleasant smell is typically provided by perfumes. A problem in the field is that much of the perfume is either not deposited or rinsed away during fabric treatment. Because perfumes are expensive components, encapsulation can be used in order to improve the delivery of the perfume during use. Unfortunately, encapsulation processes are time consuming and expensive as they typically require chemical reactions such as extensive crosslinking and/or result in capsules that over-protect the perfume as such capsules typically require a high energy input to release their active - for example pressure, temperature and/or electromagnetic radiation. Furthermore, such encapsulates' shell typically only protects the benefit agent and, on its own, provides no active value and may even leave a residue when a product containing the encapsulate is used. Deposition aids can also be used but typically only improve the deposition of a single specific perfume raw material.

[0003] Hence a need remains for fabric treatment compositions comprising a perfume and a deposition aid to improve the efficiency of deposition and/or retention of perfume onto fabrics.

[0004] WO2017/0088798 relates to cleaning compositions comprising tannins to mitigate malodors without imparting color to an article.

SUMMARY OF THE INVENTION



[0005] The invention relates to the use of fabric treatment compositions comprising from 0.01% to 5% of tannins, from 0.1% to 50% of surfactants and from 0.1% to 7% of dispersed perfume to provide improved perfume deposition onto treated fabrics.

DETAILED DESCRIPTION OF THE INVENTION


Definitions



[0006] As used herein, the term "fabric treatment composition" is a subset of cleaning and treatment compositions that includes, unless otherwise indicated, granular or powder-form all-purpose or "heavy-duty" washing agents, especially cleaning detergents; liquid, gel or paste-form all-purpose washing agents, especially the so-called heavy-duty liquid types; liquid fine-fabric detergents; liquid cleaning and disinfecting agents, fabric conditioning products including softening and/or freshening that may be in liquid, solid and/or dryer sheet form; as well as cleaning auxiliaries such as bleach additives and "stain-stick" or pre-treat types, substrate-laden products such as dryer added sheets, dry and wetted wipes and pads, nonwoven substrates, and sponges; as well as sprays and mists. All of such products which are applicable may be in standard, concentrated or even highly concentrated form even to the extent that such products may in certain aspect be non-aqueous.

[0007] As used herein, articles such as "a" and "an" when used in a claim, are understood to mean one or more of what is claimed or described.

[0008] As used herein, the terms "include", "includes" and "including" are meant to be nonlimiting.

[0009] As used herein, the term "solid" includes granular, powder, bar and tablet product forms.

[0010] As used herein, the term "fluid" includes liquid, gel, paste and gas product forms.

[0011] Unless otherwise noted, all component or composition levels are in reference to the active portion of that component or composition, and are exclusive of impurities, for example, residual solvents or by-products, which may be present in commercially available sources of such components or compositions.

[0012] All percentages and ratios are calculated by weight unless otherwise indicated. All percentages and ratios are calculated based on the total composition unless otherwise indicated.

[0013] It should be understood that every maximum numerical limitation given throughout this specification includes every lower numerical limitation, as if such lower numerical limitations were expressly written herein. Every minimum numerical limitation given throughout this specification will include every higher numerical limitation, as if such higher numerical limitations were expressly written herein. Every numerical range given throughout this specification will include every narrower numerical range that falls within such broader numerical range, as if such narrower numerical ranges were all expressly written herein.

Tannins



[0014] The fabric treatment composition of use in the present invention comprises by weight of the composition from 0.01% to 5%, preferably from 0.02% to 3%, more preferably from 0.03% to 1.5%, most preferably from 0.05% to 0.5% of tannins. It was surprisingly found that tannins improve the deposition of perfume onto fabrics and hence improve freshness of fabrics treated with the fabric treatment compositions according to the present invention. As such, tannins act as perfume deposition aids for perfume.

[0015] Tannins are polyphenolic secondary metabolites of higher plants, and are either galloyl esters and their derivatives, in which galloyl moieties or their derivatives are attached to a variety of polyol-, catechin- and triterpenoid cores (gallotannis, ellagitannins and complex tannins), or they are oligomeric and polymeric proanthocyanidis that can possess interflavanyl coupling and substitution patterns (condensed tannins). More details on the classification of tannins can be found in K. Khanbabaee, T. van Ree, Tannins: Classification and Definition, The Royal Society of Chemistry 2001, pages 641-649.

[0016] Gallotannins are all those tannins in which galloyl units are bound to diverse polyol-, catechin- or triterpenoid units.

[0017] Ellagitannins are those tannins in which at least two galloyl units are C-C coupled to each other, and do not contain a glycosidically linked catechin unit.

[0018] Complex tannins are tannins in which a catechin unit is bound glycosidically to a gallotannin or an ellagitannin unit.

[0019] Condensed tannins are all oligomeric and polymeric proanthocyanidins formed by linkage of C-4 of one catechin with C-8 or C-6 of the next monomeric catechin.

[0020] The table below provides classes of tannins more widely found in common higher plants.
COMMON NAMEFAMILYGENUSSPECIES (example of species studied)STRUCTURE (tannins classes present at higher percentage in the plant extract)
Nutgall tree (sumac) Anacardiacee Rhus   Gallotannins Ellagitannins
Willow leaf Anacardiacee Shinopsis balansae Condensed
Red Quebracho Anacardiacee Shinopsis lorentzii Condensed
Grape seeds Vitaceae Vitis vinifera Condensed
Mimosa bark Fabaceae Mimosoideae acacia mollissima Condensed
(black wattle) Fabaceae Mimosoideae Acacia mearnsii Condensed
Quechua Fabaceae Caesalpinia sp. spinosa Gallotannins Ellagitannins
  Fabaceae Sesbania   Condensed
trefoil Fabaceae Lotus   Condensed
sainfoin Fabaceae Onobrychis sp.   Condensed
  Fabaceae Vicia faba Condensed
oak Fagaceae Quercus sp.   Gallotannins Ellagitannins
chestnut Fagaceae Castanea sativa Ellagitannins
  Fagaceae Lithocarpus   Condensed
  Beech glaber sp.    
oak Fagaceae Quercus   Gallotannins Ellagitannins
maple Sapindaceae Acer   Gallotannins Ellagitannins
Pine bark Pinaceae Pinoidaea Pinus   Condensed
Spruce bark Pinaceae Picea   Condensed
    Sorghum   Condensed
  Rhizophoraceae mangrove   Condensed
  Myrtaceae Eucalyptus   Ellagitannins
        Gallotannins Condensed
Myrtan or black marlock Myrtaceae Eucalyptus redunca Condensed
Myrtle Myrtaceae Mirtus   Condensed
birch Betulaceae Betula   Gallotannins Ellagitannins
myrabolan Combretaceae Terminalia chebula Ellagitannins
  Rosaceae Prunus sp.   Condensed
  Rosaceae Malus sp.   Condensed
betel Arecaceae Areca catechu Condensed
  Burseraceae Commiphora   Condensed
  Burseraceae Angolensissp.   Condensed
  Burseraceae Canarium sp.   Condensed
Persommon Ebenaceae Diospyros   Complex


[0021] Preferably, said treatment composition comprises tannins wherein said tannins are selected from the group consisting of gallotannins, ellagitannins, condensed tannins, complex tannins and mixtures thereof. Preferably, said gallotannins are extracted from sumac galls, Aleppo oak galls, or sumac leaves, more preferably said gallotannins are selected from the group consisting of tannins extracted from Aleppo oak galls. Preferably, said ellagitannins are extracted from chestnut bark, and chestnut wood, more preferably said ellagitannins are selected from the group consisting of tannins extracted from chestnut bark. Preferably, said condensed tannins are selected from the group consisting of tannins extracted from bark pine, querbracho, mimosa bark, spruce bark, grape seeds, more preferably said condensed tannins are selected from the group consisting of tannins extracted from bark pine and querbracho. Preferably said complex tannins are selected from the group consisting of tannins extracted from persimmon and tea leaves.

[0022] More preferably, said treatment composition comprises tannins wherein said tannins are selected from the group consisting of condensed tannins, even more preferably said tannins are selected from the group consisting of tannins extracted from bark pine or querbracho.

Fabric treatment composition



[0023] The fabric treatment composition of use according to the present invention comprises, by weight of the composition, from 0.01% to 5% of tannins; from 0.1% to 50% of surfactant; from 0.1% to 7% of dispersed perfume.

[0024] Preferably, the fabric treatment composition comprises dispersed perfume at a level of from 0.2% to 5%, more preferably from 0.3% to 3.5%, more preferably 0.4% to 3%, most preferably from 0.5% to 2.5% by weight of the fabric treatment composition. By "dispersed perfume" we herein mean a perfume composition that is freely dispersed in the fabric treatment composition and is not encapsulated. Perfume is typically added to provide the fabric treatment composition with a pleasant smell. A perfume composition comprises one or more perfume raw materials ("PRM"). Perfume raw materials are the individual chemical compounds that are used to make a perfume composition. The choice of type and number of perfume raw materials is dependent upon the final desired scent. In the context of the present invention, any suitable perfume composition may be used. Those skilled in the art will recognize suitable compatible perfume raw materials for use in the perfume composition, and will know how to select combinations of ingredients to achieve desired scents. Preferably, the dispersed perfume comprises PRM's selected from the list consisting of alpha-Terpineol, Dihydro myrcenol, Hexyl cinnamic aldehyde, Limonene, Linalool, Verdox®, and mixtures thereof.

[0025] Preferably said fabric treatment composition is a liquid fabric treatment composition. It is furthermore preferred that that said fabric treatment composition comprises, from 1% to 97%, preferably from 5% to 90%, more preferably from 8% to 80% of water.

[0026] In one aspect, said fabric treatment composition contains, based on total composition weight, 0.05 wt % to 50 wt %, advantageously 1 to 40 wt %, 3 to 30 wt % or 5 wt % to 20 wt % surfactant selected from the groups of anionic surfactants, nonionic surfactants, cationic, zwitterionic and/or amphoteric surfactants. However, it is particularly preferred if the fabric treatment composition according to the invention contains anionic, nonionic and/or cationic surfactants. This corresponds to a preferred embodiment of the invention and enables optimum cleaning and/or softness performance.

[0027] In one aspect, said fabric treatment composition contains, based on total composition weight, a nonionic surfactant, in one aspect, said composition contains, based on total composition weight, from 0.01 to 25 wt %, from 1 to 20 wt %, or from 3 to 15 wt %, nonionic surfactant.

[0028] In one aspect, said fabric treatment composition contains, based on total composition weight, from 0.1 to 80 wt %, 1 to 60 wt %, or 5 to 50 wt % builders.

[0029] In one aspect, said fabric treatment composition contains a soluble builder system, in one aspect, said soluble builder system comprises soda, silicate, citrate and/or polycarboxylates.

[0030] In one aspect, said fabric treatment composition contains a perfume and a perfume delivery system. This perfume delivery system comprises a material selected from the group consisting of perfume capsules, a polymer assisted delivery system; a molecule-assisted delivery system; a fiber-assisted delivery system; a cyclodextrin delivery system; a starch encapsulated accord; and/or an inorganic carrier delivery system.

[0031] In one aspect, said perfume capsule comprises a material selected from the group consisting of melamine-formaldehyde polymers, melamine-urea polymers, polyurea, polyurethane, polyacrylate, polymethylmethacylate and polyacrylate esters.

[0032] In one aspect, said perfume capsules contain aromatic substances.

[0033] It is particularly preferred if the fabric treatment composition according to the invention further comprises an organic solvent, preferably said organic solvent is an alcohol, more preferably said organic solvent is 1,2-propane diol.

[0034] The tannins are stable within the fabric treatment composition. During use of the fabric treatment composition, for example when washing or rinsing laundry, the tannins improve the deposition of perfume raw materials and as such provide freshness benefits.

[0035] It is particularly preferred if the fabric treatment composition contains anionic surfactant, advantageously in amounts from 0.1 to 25 wt%, more advantageously 1 to 20 wt%, and in particular in amounts of 3 to 15 wt%, based on the product as a whole. This corresponds to a preferred embodiment of the invention and enables particularly advantageous cleaning performance. One particularly suitable anionic surfactant is alkyl benzene sulfonate, preferably linear alkyl benzene sulfonate (LAS). If the composition according to the invention contains alkyl benzene sulfonate, advantageously in amounts of 0.1 to 25 wt%, more advantageously 1 to 20 wt%, and in particular in amounts of 3 to 15 wt%, based on the product as a whole, this constitutes a preferred embodiment of the invention.

[0036] Other particularly suitable anionic surfactants are alkyl sulfates, in particular fatty alcohol sulfates (FAS) such as, for example, C12-C18 fatty alcohol sulfate. C8-C18 alkyl sulfates can preferably be used; particularly preferred are C13 alkyl sulfate and C13-C15 alkyl sulfate and C13-C17 alkyl sulfate, advantageously branched, in particular alkyl-branched C13-C17 alkyl sulfate. Particularly suitable fatty alcohol sulfates can be derived from lauryl and myristyl alcohol; i.e. fatty alcohol sulfates containing 12 or 14 carbon atoms. Long-chained FAS types (C16 to C18) are very suitable for washing laundry at higher temperatures. Other preferred anionic surfactants that can be used include alkane sulfonates (e.g. secondary C13-C18 alkane sulfonate), methyl ester sulfonates (e.g. C12-C18 methyl ester sulfonate) and α-olefin sulfonates (e.g. C14-C18 olefin sulfonate) and alkyl ether sulfates (e.g. C12-C14 fatty alcohol-2EO ether sulfate) and/or soaps. Other suitable anionic surfactants will be described further below. However, particularly suitable are FAS and/or LAS.

[0037] Anionic surfactants, including the soaps, can be in the form of their sodium, potassium or ammonium salts, as well as soluble salts of organic bases such as mono-, di- or triethanolamine, preferably monoethanolamine. Preferably, the anionic surfactants are present in the form of their sodium or potassium salts, in particular in the form of sodium salts.

[0038] It is particularly preferred if the fabric treatment composition according to the invention contains nonionic surfactants, advantageously in amounts of 3 to 15 wt %, more advantageously 1 to 20 wt %, and in particular in amounts of 3 to 15 wt %, based on the product as a whole. This corresponds to one preferred embodiment of the invention. Particularly preferred is the use of alkyl polyglycol ethers, in particular in combination with anionic surfactant, such as, preferably, LAS. Other suitable nonionic surfactants are alkyl phenol polyglycol ether (APEO), (ethoxylated) sorbitan fatty acid ester (sorbitans), alkyl polyglucosides (APG), fatty acid glucamides, fatty acid ethoxylates, amine oxides, ethylene oxide propylene oxide block polymers, polyglycerol fatty acid ester, and/or fatty acid alkanol amides. Other suitable nonionic surfactants will be described further below. Sugar-based nonionic surfactants, such as, in particular, APG, are particularly preferred.

[0039] For the purposes of the invention, builders include in particular zeolites, polycarboxylates, citrates (such as, for example, sodium citrate), soda, sodium hydrogen carbonate, phosphates, sodium silicates (soluble glass), phosphonates, alkaline amorphous disilicates, and crystalline layered silicates. Builders are contained in fabric treatment compositions according to the invention preferably in amounts of 0.1 to 80 wt %, advantageously 1 to 60 wt %, and more advantageously 5 to 50 wt %. In addition, it is most particularly preferred that the detergent or cleaning agent according to the invention contain a builder system (i.e. at least two substances having a builder effect), preferably a builder system containing zeolite, preferably comprising zeolite in amounts > 1 wt %, advantageously > 5 wt %, more advantageously > 10 wt %, in particular ≥ 15 wt %, wt % based on the product as a whole. A useful maximum amount can be 40 wt %, 30 wt % or 20 wt %, based on the product as a whole. This corresponds to a preferred embodiment of the invention. A combination of zeolite and soda is preferred.

[0040] It is also particularly preferred if the fabric treatment composition according to the invention further comprises a chelant and/or an antioxidant, preferably said composition comprises a chelant. Chelants and antioxidants further improve the stability of perfume and as such, the perfume character is maintained over a longer time.

[0041] It is also particularly preferred if the fabric treatment composition according to the invention contains a soluble builder system, preferably comprising soda, silicate, citrate and/or polycarboxylates, advantageously in amounts of 0.1 to 50 wt %, based on the product as a whole. This corresponds to a preferred embodiment of the invention. If such a soluble builder system is contained in the product, it is most preferable if the product contains only minor amounts of insoluble builders, such as, in particular, zeolite, for example < 5 wt % to 0.1 wt %, and in particular, if the product in such cases contains no insoluble builder at all.

[0042] It is also possible for the fabric treatment composition according to the invention to contain phosphates. Phosphate is preferably contained in amounts of 1 to 40 wt %, in particular 5 to 30 wt %, based on the product as a whole. However, according to another preferred embodiment, the detergent or cleaning agent according to the invention is free of phosphates.

[0043] The fabric treatment composition according to the invention, which, for example, can be present as, in particular, solids in powder form, in passivated particle form, as homogenous solutions or suspensions, can also in principle contain all known ingredients that are customary in such products. The products according to the invention can, as was already shown, contain in particular builder substances, surfactants, also bleaching agents, bleach activators, water-miscible organic solvents, enzymes, sequestering agents, electrolytes, pH regulators, and other additives such as optical brighteners, fluorescing agents, anti-redeposition agents, shrinkage blockers, anti-creasing agents, color-transfer inhibitors, antimicrobial active substances, germicides, fungicides, antioxidants, preservatives, corrosion inhibitors, glass corrosion inhibitors, disintegrating agents, static inhibitors, bittering agents, ironing aids, water-repellent and impregnating agents, swelling and anti-slip agents, neutral filling salts, as well as UV absorbers, foam regulators, as well as colorants and aromatic substances.

[0044] In one aspect of the invention, the fabric treatment composition comprises cationic surfactant. Suitable cationic surfactants include quaternary ammonium ester softening actives. Said suitable quaternary ammonium ester softening actives include, but are not limited to, materials selected from the group consisting of monoester quats, diester quats, triester quats and mixtures thereof. Preferably, the level of monoester quat is from 2.0% to 40.0%, the level of diester quat is from 40.0% to 98.0%, the level of triester quat is from 0.0% to 25.0% by weight of total quaternary ammonium ester softening active.

[0045] Said quaternary ammonium ester softening active may comprise compounds of the following formula:

         {R2(4-m)-N+-[X-Y-R1]m}A-

wherein:

m is 1, 2 or 3 with proviso that the value of each m is identical;

each R1 is independently hydrocarbyl, or branched hydrocarbyl group, preferably R1 is linear, more preferably R1 is partially unsaturated linear alkyl chain;

each R2 is independently a C1-C3 alkyl or hydroxyalkyl group, preferably R2 is selected from methyl, ethyl, propyl, hydroxyethyl, 2-hydroxypropyl, 1-methyl-2-hydroxyethyl, poly(C2-3 alkoxy), polyethoxy, benzyl;

each X is independently -(CH2)n-, -CH2-CH(CH3)- or -CH(CH3)-CH2- and

each n is independently 1, 2, 3 or 4, preferably each n is 2;

each Y is independently -O-(O)C- or -C(O)-O-;

A- is independently selected from the group consisting of chloride, methyl sulfate, and ethyl sulfate, preferably A- is selected from the group consisting of chloride and methyl sulfate;

with the proviso that when Y is -O-(O)C-, the sum of carbons in each R1 is from 13 to 21, preferably from 13 to 19. Preferably, X is -CH2-CH(CH3)- or -CH(CH3)-CH2- to further improve the hydrolytic stability of the quaternary ammonium ester softening active, and hence further improve the stability of the fabric treatment composition.



[0046] Because of the balance of processability and odor of the quaternary ammonium ester softening active, in preferred fabric treatment compositions, the iodine value of the parent fatty acid from which the quaternary ammonium fabric softening active is formed is from 0 to 100, more preferably from 10 to 60, even more preferably from 15 to 45.

[0047] Examples of suitable quaternary ammonium ester softening actives are commercially available from KAO Chemicals under the trade name Tetranyl® AT-1 and Tetranyl® AT-7590, from Evonik under the tradename Rewoquat® WE16 DPG, Rewoquat® WE18, Rewoquat® WE20, Rewoquat® WE28, and Rewoquat® 38 DPG, from Stepan under the tradename Stepantex® GA90, Stepantex® VR90, Stepantex® VK90, Stepantex® VA90, Stepantex® DC90, and Stepantex® VL90A.

[0048] It was surprisingly found that tannins improve the deposition of perfume on treated cotton and polyester fabrics, especially cotton fabrics. As such, tannins improve the freshness of treated cotton and polyester fabrics treated with the composition according to the present invention.

METHODS


Full scale washing machine test



[0049] The washing procedure in full scale is performed by using a Miele W1714 washing machine operating at 30°C, 800 rpm and synthetic short program with 2 gpg water. Cotton and polyester fabric tracers (20 cm x 20 cm) are put into the washing machine together with a mixed cotton/polycotton ballast load (8 cotton pieces of 134 g each and 8 polycotton pieces of 124 g each). Fabric treatment compositions are added into the washing machine together with the washing load.

Deposition test through Headspace analysis via Gas Chromatography - Mass Spectroscopy (GC-MS)



[0050] Wet fabrics coming from the washing machine are dried at room temperature for 15 hours and then cut into 5 cm x 5 cm pieces. Samples for deposition tests are prepared as follows:
  1. 1) Each dried piece of treated fabric is put into a 20 mL vial;
  2. 2) 12 mL of ethanol are poured into each vial containing the fabrics;
  3. 3) 12 mL of ethanol are also poured into 3 vials for the preparation of the standards (at 3 different perfume levels);
  4. 4) All the vials containing the fabrics are placed into an oven with orbital shaking at 60 °C for 1 hour;
  5. 5) All the vials are transferred into an ultrasonic bath and left under sonication for 15 minutes;
  6. 6) The vials are shaken and each ethanol solution is poured into a different vial (containing the extracts);
  7. 7) A stock PRM solution (0.5% w/w of PRM in ethanol) is prepared to make a work solution with a concentration of 0.008% w/w of PRM in ethanol; standard solutions are prepared by pouring 3 different amounts or work solutions are added to the vials containing 12 mL of ethanol;
  8. 8) 4.5 mL of a 20% w/w solution of NaCl are transferred into a vial for GC-MS head-space analysis. This procedure is repeated for each extract and standard solution. Each sample is replicated;
  9. 9) 0.5 mL of PRM solutions in ethanol (extracts and standards) are poured into the vials containing the NaCl solution;
  10. 10) The vials are closed and the GC-MS analysis is started.


[0051] After the measurements, the obtained correlation areas are analysed.

EXAMPLES



[0052] Liquid fabric treatment compositions comprising tannins according to the present invention were prepared by providing the following materials:
MaterialSupplier
Pine Bark Extract Tannina ROBERTET
1,2 Propanediol INEOS
Perfumeb PROCTER & GAMBLE
Unperfumed Liquid Detergent PROCTER & GAMBLE
aCondensed tannins content 19 mgCyE/g, total polyphenol content 9.17%
bPerfume accord comprising more than 20 PRM's including abundant PRM's alpha-Terpineol, Dihydro myrcenol, Hexyl cinnamic aldehyde, Limonene, Linalool, and Verdox®.


[0053] Tannin solutions were prepared by adding the pine bark extract tannins and 1,2 propanediol into a glass vial. In order to further accelerate the solubilization of the tannins, the solutions were put into an ultrasonic bath for 30 minutes. The fabric treatment compositions were prepared by adding perfume and, when present, the tannins solutions to an unperfumed liquid detergent in a glass jar and mixing until a homogeneous fabric treatment composition was obtained.
Table 1: Composition of examples 1 and 2. The comparative example 1 is indicated with an asterisk.
 Ex. 1*Ex. 2
 Weight %
Water Balance to 100%
Perfume 0.72%
Pine Bark Extract Tannin 4E0510 - 0.50%
C11.8 Linear Alkyl Benzene (HLAS) 6.90
Amines, C12-14 (even numbered) -alkyldimethyl, N-oxides 0.660
Poly(oxy-1,2-ethanediyl), alpha-sulfo-omega-hydroxy-, C10-16-alkyl ethers, sodium salts 11.2
C12-C18 fatty acids 0.878
Citric Acid 2.00
DTPA 0.453
Enzymes, stabilizers 1.25
Aziridine, homopolymer, ethoxylated 1.51
Aziridine, polymer with 2-methyloxirane and oxirane 1.32
Brighteners 0.181
Ethanol 1.44
1,2 Propanediol 2.05
Sorbitol 0.0630
Monoethanolamine 2.09
Diethylene glycol 1.93
Sodium hydroxyde 0.676
Anti-foam, aesthetic, dye 0.217


[0054] Fabric treatment compositions ex. 1 and 2 were used to treat fabrics in a full scale washing test (see Methods). Cotton fabrics and polyester fabrics were washed as described in the method section by using the compositions ex. 1 and 2. GC-MS headspace analysis was carried out above wet fabrics. Table 2 reports the total concentration of perfume detected. A higher headspace concentration above wet treated fabrics is indicative of improved perfume deposition and/or release of perfume of said treated fabrics. Table 3 summarizes the single PRM concentrations of highly abundant PRM's in the perfume that was used in ex. 1 and 2.
Table 2: Total headspace PRM concentration above wet cotton and polyester fabrics treated with inventive compositions ex. 2 as compared to fabrics treated with comparative composition 1.
 Ex.* 1Ex. 2Ex.* 1Ex. 2
Fabric typecottonpolyester
Concentration [nM] 115 ± 4 149 ± 4 97 ± 8 114 ± 4


[0055] From Table 2 it is clear that tannins led to a higher headspace concentration above treated fabrics. The improvement was the highest on cotton fabrics (+30%). This higher headspace concentration above both cotton (+30%) as well as polyester (+18%) fabrics is indicative of improved deposition and/or release of perfume above treated fabrics.
Table 3: Single PRM headspace concentrations above wet fabrics treated with inventive compositions ex. 2 as compared to fabrics treated with comparative composition 1.
 Ex.* 1Ex. 2Ex.* 1Ex. 2
Fabric typecottonpolyester
Concentration [nM]
alpha-Terpineol 6.2 ± 0.6 10.6 ± 0.2 5.7 ± 0.5 8.6 ± 0.7
Dihydro myrcenol 7 ± 1 15.7 ± 0.4 2.1 ± 0.1 3.5 ± 0.5
Hexyl cinnamic aldehyde 34 ± 1 38 ± 2 25 ± 3 30 ± 2
Limonene 1.9 ± 0.1 3.7 ± 0.1 5.1 ± 0.3 5.4 ± 0.1
Linalool 3.5 ± 0.5 8.0 ± 0.2 1.8 ± 0.2 2.6 ± 0.2
Verdox 5.9 ± 0.3 11.0 ± 0.4 2.0 ± 0.1 2.2 ± 0.1


[0056] By comparing ex. 1 with ex. 2, it is clear that fabrics treated with ex. 2 according to the present invention resulted consistently in a higher PRM headspace concentration above treated wet fabrics. Overall, the increase was the highest on cotton fabrics.

[0057] Table 4 summarizes the composition of the samples used to treat fabrics according to the full scale washing machine test (see Methods), followed by GC-MS analysis to assess the deposition (see Methods).
Table 4: Composition of examples 3 and 4. The comparative example 3 is indicated with an asterisk.
 Ex. 3*Ex. 4
 Weight %
Water Balance to 100%
Perfume 0.72%
Pine Bark Extract Tannin - 0.50%
C11.8 Linear Alkyl Benzene (HLAS) 6.90
Amines, C12-14 (even numbered) -alkyldimethyl, N-oxides 0.660
Poly(oxy-1,2-ethanediyl), alpha-sulfo-omega-hydroxy-, C10-16-alkyl ethers, sodium salts 11.2
C12-C18 fatty acids 0.878
Citric Acid 2.00
DTPA 0.453
Enzymes, stabilizers 1.25
Aziridine, homopolymer, ethoxylated 1.51
Aziridine, polymer with 2-methyloxirane and oxirane 1.32
Brighteners 0.181
Ethanol 1.44
1,2 Propanediol 2.05
Sorbitol 0.0630
Monoethanolamine 2.09
Diethylene glycol 1.93
Sodium hydroxyde 0.676
Anti-foam, aesthetic, dye 0.217


[0058] Table 5 reports the total correlation areas obtained from the measures. A higher correlation area is indicative of higher total PRM content and as such is indicative of improved deposition of perfume on the treated fabrics.
Table 5: Correlation areas from deposition tests using composition ex. 4 as compared to comparative composition ex. 3.
 Ex.3Ex. 4
Correlation area x 10-4 [area counts] 61 ± 9 241 ± 58


[0059] By comparing ex. 4 with ex. 3, it is clear that the composition ex. 4, according to the present invention, resulted in a higher perfume deposition, since the value of the calculated correlation area of ex. 4 was about four times as compared to that of comparative ex. 3.


Claims

1. A use of a liquid fabric treatment composition comprising tannins to improve perfume deposition wherein said composition comprises by weight of the composition

- from 0.01% to 5% of tannins;

- from 0.1% to 50% of surfactant;

- from 0.1% to 7% of dispersed perfume.


 
2. The use of the fabric treatment composition according to claim 1 wherein the level of said tannins is from 0.02% to 3%, preferably from 0.03% to 1.5%, most preferably from 0.05% to 0.5%.
 
3. The use of the fabric treatment composition according to any preceding claim wherein said tannins are selected from the group consisting of gallotannins, ellagitannins, condensed tannins, complex tannins and mixtures thereof.
 
4. The use of the fabric treatment composition according to claim 3 wherein

- said gallotannins are extracted from sumac galls, Aleppo oak galls, or sumac leaves, preferably said gallotannins are selected from the group consisting of tannins extracted from Aleppo oak galls;

- said ellagitannins are extracted from chestnut bark, and chestnut wood, preferably said ellagitannins are selected from the group consisting of tannins extracted from chestnut bark;

- said condensed tannins are selected from the group consisting of tannins extracted from bark pine, querbracho, mimosa bark, spruce bark, grape seeds, and mixtures thereof; preferably said condensed tannins are selected from the group consisting of tannins extracted from bark pine and querbracho;

- complex tannins are selected from the group consisting of tannins extracted from persimmon and tea leaves.


 
5. The use of the fabric treatment composition according to claim 4 wherein said tannins are selected from the group consisting of condensed tannins, more preferably said tannins are selected from the group consisting of tannins extracted from pine bark or querbracho.
 
6. The use of the fabric treatment composition according to any preceding wherein said fabric treatment composition is a liquid fabric treatment composition comprising from 1% to 97%, preferably from 5% to 90%, more preferably from 8% to 80% of water by weight of the fabric treatment composition.
 
7. The use of the fabric treatment composition according to any preceding claim wherein the level of dispersed perfume is from 0.2% to 5%, preferably from 0.3% to 3.5%, more preferably 0.4% to 3%, most preferably from 0.5% to 2.5% by weight of the fabric treatment composition.
 
8. The use of the fabric treatment composition according to any preceding claim wherein said dispersed perfume comprises a perfume raw material selected from the list consisting of alpha-Terpineol, Dihydro myrcenol, Hexyl cinnamic aldehyde, Limonene, Linalool, Verdox ®, and mixtures thereof.
 
9. The use of the fabric treatment composition according to any preceding claim wherein the surfactant is present at a level of 1 to 40 %, preferably from 3 to 30 %, more preferably from 5 % to 20 %, by weight of the fabric treatment composition.
 
10. The use of the fabric treatment composition according to any preceding claim wherein the surfactant is selected from anionic and nonionic surfactant, preferably said surfactant is selected from the list consisting of alkyl benzene sulfonate, fatty alcohol sulfates, alkyl polyglycol ethers, alkyl phenol polyglycol ether, sorbitan fatty acid ester, alkyl polyglucosides, fatty acid glucamides, fatty acid ethoxylates, amine oxides, ethylene oxide propylene oxide block polymers, polyglycerol fatty acid ester, and/or fatty acid alkanol amides, and mixtures thereof.
 
11. The use of the fabric treatment composition according to any preceding claim wherein said composition further comprises a chelant and/or an antioxidant, preferably said composition comprises a chelant.
 
12. The use of the fabric treatment composition according to any preceding claim wherein said composition further comprises an organic solvent, preferably said organic solvent is an alcohol, more preferably said organic solvent is 1,2-propane diol.
 
13. The use of the fabric treatment composition according to any preceding claim to improve the perfume deposition on cotton and polyester fabrics, preferably on cotton fabrics.
 





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Cited references

REFERENCES CITED IN THE DESCRIPTION



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Non-patent literature cited in the description