DE20014287U1 - Conditioning shampoo - Google Patents

Description

A-28/00-U

Conditioning shampoo

The invention relates to a conditioning shampoo with improved properties.

From a good shampoo, the consumer expects above all a satisfactory cleaning effect, good foam development during application, economical use, good skin and mucous membrane compatibility without any skin-irritating or allergenic effect and usually also a hair-conditioning effect.

There are numerous shampoos that attempt to meet these requirements, but do not always achieve this.

The invention now provides a shampoo that meets the above requirements.

The hair shampoo according to the invention is obtained by adding at least one powdered polyamide with a particle diameter of at least 80% in the range from 1 to 20 microns to an aqueous base containing 5 to 50% by weight, based on the total composition, of at least one anionic, amphoteric, zwitterionic and/or nonionic surfactant.

Suitable powdered polyamides, which are used in the hair washing compositions according to the invention preferably in an amount of about 0.1 to about 10, in particular about 0.25 to about 7.5, especially 0.5 to 5% by weight, based on the total composition of the composition, are known per se, for example as "polyamide 6" or "12" under the name "nylon". 80% of the particles have a particle diameter in the range of 1 to 20, preferably about 2.5 to 17, in particular about 5 to 15 microns.

Other commercial products are “Orgasol ^R 1002”, “2002” and “4000”.

♦ ■ .. . : I*..*! ·· · A-28/00

The shampoo compositions according to the invention contain the substances commonly found in shampoos.

Such are in particular surfactants, preferably anionic surfactants, in an amount of about 5 to about 50% by weight, preferably about 10 to about 25% by weight of the composition.

Suitable anionic surfactants within the scope of the invention are those of the sulfate, sulfonate, carboxylate and alkyl phosphate type, especially of course those which are usually used in shampoos, for example the known Ci ₀ -Ci 8 alkyl sulfates and in particular the corresponding ether sulfates, for example Ci 2 -Ci 4 alkyl ether sulfate, lauryl ether sulfate, in particular with 1 to 4 ethylene oxide groups in the molecule, furthermore monoglyceride (ether) sulfates, fatty acid amide sulfates which are obtained by ethoxylation and subsequent sulfation of fatty acid alkanolamides, and their alkali salts as well as salts of long-chain mono- and dialkyl phosphates, which are mild, skin-compatible detergents.

Anionic surfactants that are also suitable within the scope of the invention are a-olefin sulfonates or their salts and in particular alkali salts of sulfosuccinic acid semiesters, for example the disodium salt of monooctyl sulfosuccinate and alkali salts of long-chain monoalkylethoxy sulfosuccinates. Suitable surfactants of the carboxylate type are alkyl polyether carboxylic acids and their salts of the formula

R - (C ₂ H ₄ O) _n - O - CH ₂ COOX,

wherein R is a Ce^rj-alkyl group, preferably a C^-C^-alkyl group, η is a

Number from 1 to 20, preferably 2 to 17, and X is H or preferably a cation from the group sodium, potassium, magnesium and ammonium, which may optionally be hydroxyalkyl-substituted, and alkylamidopolyethercarboxylic acids of the general formula

RCN-CH ₂ -CH ₂ -(C ₂ H ₄ O) _n -CH ₂ COOX ,

Ii r

0 H

wherein R and X have the meaning given above, and η in particular stands for a number from 1 to 10, preferably 2.5 to 5.

Such products have been known for a long time and are commercially available, for example under the trade names "&Agr;&Kgr;&Ugr;&Rgr;&Ogr;®" and "AKYPO-SOFT® ¹¹ .

C8-C ₂ rj-acylisethionates can also be used alone or in mixture with other surfactants.

can be used, as can sulfofatty acids and their esters. Mixtures of several anionic surfactants can also be used, for example a mixture of an a-olefin sulfonate and a sulfosuccinate, preferably in a ratio of 1:3 to 3:1, or an ether sulfate and a polyethercarboxylic acid or alkylamidoethercarboxylic acid.

An overview of the anionic surfactants used in liquid body cleansing products can be found in the monograph by K. Schrader, "Fundamentals and Recipes of Cosmetics", 2nd edition (1989, Hüthig Buchverlag), pp. 595-600 and pp. 683 to 691.

Other suitable anionic surfactants are C ₈ -C ₂ 2-acylaminocarboxylic acids or their water-soluble salts, preferably in an amount of 0.5 to 10, in particular 1 to 7.5% by weight, calculated on the total composition. Particularly preferred are N-lauroyl glutamate, in particular as the sodium salt, and for example N-lauroyl sarcosinate, NC-ia-C-ie-acylaspartic acid, N-myristoyl sarcosinate, N-oleoyl sarcosinate, N-lauroyl methylalanine, N-lauroyl lysine and N-lauroyl aminopropyl glycine, preferably in the form of their water-soluble alkali or ammonium, in particular sodium salts, preferably in a mixture with the above-mentioned anionic surfactants.

The particularly preferred range of amounts of anionic surfactants in the liquid shampoos according to the invention is between about 5 and about 35% by weight, in particular about 7.5 to about 25% by weight, particularly preferably about 10 to about 20% by weight, calculated on the total composition of the agent.

Other suitable surfactants in the hair shampoos according to the invention are nonionic surfactants, preferably in a mixture with anionic and/or zwitterionic or amphoteric surfactants.

These are described in Schrader, I.e., on pages 600-601 and 694-695. Particularly suitable are alkyl polyglucosides with the general formula

RO-(RiO) _n -Z _x ,

wherein R is an alkyl group with 8 to 18 carbon atoms, R1 is an ethylene or propylene group, Z is a saccharide radical with 5 to 6 carbon atoms, η is a number from 0 to 10 and χ is a number between 1 and 5. These alkylpolyglucosides have recently become known in particular as excellent skin-compatible foam-improving agents in liquid washing and body cleaning agents and are contained in an amount of 1 to 20, in particular 2.5 to 10% by weight of the total composition. Mixtures of anionic surfactants and alkylpolyglucosides and their use in liquid body cleaning agents are already known per se, for example from EP-A 70 074. The alkylpolyglucosides described therein are in principle also suitable within the scope of the present invention; as well as the mixtures of sulfosuccinates and alkylpolyglucosides known from EP-A 358 216.

Other non-ionic surfactant components include long-chain fatty acid mono- and dialkanolamides, such as coconut fatty acid monoethanolamide and myristic fatty acid monoethanolamide, which can also be used as foam enhancers.

• · φ *

Other non-ionic surfactants that can also be used are, for example, the various sorbitan esters, such as polyethylene glycol sorbitan stearic acid esters, fatty acid polyglycol esters or mixed condensates of ethylene oxide and propylene oxide, such as those sold under the trade name "Pluronics".

Other surfactants that can be used additionally are amine oxides in an amount of about 0.25 to about 5, preferably about 0.5 to about 3.5 wt.%, calculated on the total composition of the agent.

Such amine oxides have long been part of the state of the art, for example C-12-Ci8-alkyldimethylamine oxides such as lauryldimethylamine oxide, C^-Cia-alkylamidopropyl or -ethylamine oxides, _Ci2 - _Ci8- alkyldi(hydroxyethyl) or -(hydroxypropyl)amine oxides, or also amine oxides with ethylene oxide and/or propylene oxide groups in the alkyl chain.

Amine oxides are sold under the names "Ammonyx®", "Aromox®" or "Genaminox®".

The compositions according to the invention can contain amphoteric or zwitterionic surfactants as a further surfactant component, for example in an amount of about 0.5 to about 10, preferably about 1 to about 7.5% by weight, based on the total composition, likewise preferably in a mixture with anionic and/or nonionic surfactants.

The various known betaines such as fatty acid amidoalkylbetaines and sulfobetaines, for example laurylhydroxysulfobetaine, are particularly suitable; long-chain alkylamino acids such as cocoaminoacetate, cocoaminopropionate and sodium cocoamphopropionate and acetate have also proven to be suitable.

In particular, betaines can have the structure

_CH2 - _CH2 -OH

_CH3

RCN-CH ₂ -CH ₂ -N©-CH ₂ COO© R - N®-(CH ₂ ) _n -C00©

II I I ,1

OH η CH ₃

and where R is a Cß-C-is-alkyl group and η is 1 to 3, sulfobetaines of the structure

_CH3

- N©

(CHz) _n - so ₃ e

_CH3

where R is a Cß-C-js-alkyl group and η is 1 to 3, and amidoalkylbetaines of the structure

_CH3

-CH ₂ - COÖ

,Θ;

_CH3OH

where R is a Cß-Cis-alkyl group and η is 1 to 3.

The shampoos according to the invention can preferably also contain conditioning active ingredients such as protein hydrolysates and polypeptides, e.g. keratin hydrolysates, collagen hydrolysates of the type "Nutrilan ^R " or elastin hydrolysates and in particular also vegetable, optionally cationized protein hydrolysates, e.g. "Gluadin ^R ".

Other preferred possible additives are hair conditioning polymers. These can be non-ionic polymers, preferably alcohol- and/or water-soluble vinylpyrrolidone polymers such as a vinylpyrrolidone homopolymer or copolymer, in particular with vinyl acetate. Suitable vinylpyrrolidone polymers are, for example, the products known under the trade name "Luviskol®", for example the homopolymers "Luviskol® K 30, K 60 and K 90" as well as the water- or alcohol-soluble copolymers of vinylpyrrolidone and vinyl acetate, which are sold by BASF AG under the trade name "Luviskol® VA 55 or VA 64".

Other suitable non-ionic polymers are vinylpyrrolidone/vinyl acetate/vinyl propionate copolymers such as "Luviskol® VAP 343", vinylpyrrolidone/(meth)acrylic acid ester copolymers and chitosan derivatives. Their proportion in the hair shampoos according to the invention, if present, is between about 0.05 and about 5, preferably 0.1 and 2.5, in particular about 0.15 to 1.5% by weight, based on the total composition of the agent.

Instead of or in addition to the non-ionic polymers, cationic and/or anionic and/or amphoteric polymers can also be used as hair conditioning polymers in the amounts mentioned.

Preferred hair-conditioning cationic polymers are the well-known quaternary cellulose derivatives of the "Polymer JR" type and quaternized homo- and copolymers of dimethyldiallylammonium chloride, as they are sold under the trade name "Merquat®", quaternary vinylpyrrolidone copolymers, in particular with dialkylaminoalkyl (meth)acrylates, as they are known under the name "Gafquat®", copolymers of vinylpyrrolidone and vinylimidazolinium methochloride, which are sold under the trade name "Luviquat®", polyamino-polyamide derivatives, for example copolymers of adipic acid-dimethylaminohydroxypropyldiethylenetriamine, as they are sold under the name "Cartaretine® F", as well as bisquaternary long-chain ammonium compounds of the urea structure described in US Pat. No. 4,157,388, which are sold under the trade name "Mirapol® A 15" are available in stores.

In this context, reference is also made to the cationic polymers mentioned in DE-OSs 25 21 960, 28 11 010, 30 44 738 and 32 17 059 as well as the products described in EP-A 337 354 on pages 3 to 7. Mixtures of different cationic polymers can also be used.

The cationic polymers also include the quaternization products of graft polymers of organopolysiloxanes and polyethyloxazolines described in EP-A 524 612 and EP-A 640 643.

Examples of amphoteric polymers which are used alone or in a mixture with at least one other cationic, non-ionic or anionic polymer are, in particular, copolymers of N-octylacrylamide, (meth)acrylic acid and tert-butylaminoethyl methacrylate of the "Amphomer®" type; copolymers of methacryloylethyl betaine and alkyl methacrylates of the "Yukaformer®" type, e.g. the butyl methacrylate copolymer "Yukaformer® Am75"; copolymers of monomers containing carboxyl groups and sulfone groups, e.g. (meth)acrylic acid and itaconic acid, with monomers containing basic groups, in particular amino groups, such as mono- or dialkylaminoalkyl (meth)acrylates or mono- or dialkylaminoalkyl (meth)acrylamides; Copolymers of N-octylacrylamide, methyl methacrylate, hydroxypropyl methacrylate, N-tert-butylaminoethyl methacrylate and acrylic acid as well as the copolymers known from USA 3,927,199 are mentioned.

Suitable anionic polymers are vinyl alkyl ether, in particular methyl vinyl ether/maleic acid copolymers, which are formed by hydrolysis of vinyl ether/maleic anhydride copolymers and are sold under the trade name "Gantrez® AN or ES". These polymers can also be partially esterified, for example "Gantrez® ES 225", the ethyl ester of an ethyl vinyl ether/maleic acid copolymer, or the butyl or isobutyl ester of the same.

Other suitable anionic polymers are in particular vinyl acetate/crotonic acid or vinyl acetate/vinyl neodecanoate/crotonic acid copolymers of the type "Resyn®"; sodium acrylate/vinyl alcohol copolymers of the type "Hydagen® F", sodium polystyrene sulfonate, e.g.*

s.Ox JO-KMJ

polymers of the "Ultrahold®" type; vinylpyrrolidone/vinyl acetate/itaconic acid copolymers, acrylic acid/acrylamide copolymers or sodium salts thereof of the "Reten®" type; etc.

The shampoos according to the invention can of course contain all the usual substances used in such products.

Examples of such substances include complexing agents, dyes, preservatives, pH regulators, viscosity regulators such as inorganic salts, insofar as they are not already contained in the surfactant starting mixtures, fragrances, pearlescent agents, thickeners, humectants, vegetable and animal oils, etc.

Suitable vegetable and animal oils as well as synthetic fatty acid esters, which also include waxes, are in particular natural oils such as avocado oil, coconut oil, palm oil, sesame oil, peanut oil, sperm oil, sunflower oil, almond oil, peach kernel oil, wheat germ oil, macadamia nut oil, evening primrose oil, jojoba oil, castor oil, or olive or soybean oil, lanolin and its derivatives, as well as mineral oils such as paraffin oil and Vaseline, which also have hair conditioning properties. Synthetic oils and waxes are, for example, silicone oils, polyethylene glycols, etc. Other suitable hydrophobic components are in particular fatty alcohols, preferably those with about 8 to 22 carbon atoms in the molecule such as myristyl, cetyl, stearyl alcohol, wax alcohols and fatty acid esters such as isopropyl myristate, palmitate, stearate and isostearate, oleyl oleate, isocetyl stearate, hexyl laurate, dibutyl adipate, dioctyl adipate, myristyl myristate, oleyl erucate, polyethylene glycol and polyglyceryl fatty acid esters such as PEG-7-glyceryl cocoate, cetyl palmitate, etc. These hydrophobic components are preferably contained in the composition according to the invention in a total amount of about 0.5 to about 10, in particular about 1 to 7.5, especially about 1.5 to 5% by weight, calculated on the total composition.

A list of such additives can also be found in Schrader, I.e., on pp. 695 to 722.

Another preferred ingredient is ethoxydiglycol, preferably in an amount of 0.1 to 5% by weight of the shampoo according to the invention.

Finally, known polysiloxanes can also be used as conditioning agents in the liquid hair shampoos according to the invention. The preferred proportion of these is between about 0.5 and about 5, in particular 1 to 3% by weight of the total composition. Both highly volatile and non-volatile cyclic or linear polysiloxanes are suitable, for example the silicone oils known by the trivial name "dimethicone" or "phenyldimethicone" and "cyclomethicone".

Also suitable, for example, are the silicone derivatives described in EP-A 398 177, which are used there in combination with alkyl polyglucosides in liquid detergent compositions.

According to a preferred embodiment of the invention, the shampoos according to the invention can also contain dyes for the direct or oxidative coloring of hair, i.e. so-called tinting or coloring shampoos. Tinting shampoos containing direct dyes are particularly suitable. It has been found that such shampoos, which contain polyamide powder and in particular cationic direct dyes, produce a particularly brilliant, shiny and stable hair color compared to known tinting shampoos based on conventional shampoos.

The pH value of the shampoos used according to the invention is in the usual range between about 5 and 8.5; for special products it can also be set below 5.

•5 *·»* ! &iacgr;\·· : :: : &agr;-28/&ogr;&ogr;

The viscosity is in the usual range between about 500 and about 50,000 mPa.s at 2O ⁰ C, preferably about 1,000 to about 25,000, in particular 2,500 to 10,000 mPa.s at 2O ⁰ C ₁ measured according to Brookfield or Höppler at a shear stress of 10 sec~1.

These compositions can also be packaged as aerosol shampoos with the usual propellants in aluminum monoblock cans as well as tinplate cans, preferably with an inner coating, e.g. based on epoxy resin, as well as plastic cans.

The products are manufactured by stirring together the individual
Components in water, whereby premixes of different components can also be used.

The following examples serve to illustrate the invention.

Examples

Components number 1 No. 2 No. 3 No. 4 Sodium alkyl ether sulfate,
(-2.5 EO) 10.0 8.5 3.5 8.0 Sodium lauroyl glutamate 6.0 - - - Cocoamphoacetat - 3.0 2.0 2.5 Cocoamidopropyl betaine 2.0 - - - PEG-3 distearate 2.0 - - 1.5 Ci2-C ₁₄ -alkyl polyglucoside
(PD-1.5) - 2.0 3.0 - Polyquaternium-7 1.0 - - - Acrylates/Aminoacrylates /
Cio-C _3o -Alkyl PEG20-
Itaconate copolymer 2.5 0.8 Triethanolamine - 0.3 - Acrylates C ₁₀ -C ₃₀ Alkyl
Acrylate copolymer - - 0.6 - PEG-60 hydrogenated castor oil - 0.4 0.5 0.5 Sodium chloride 1.2 - - - Nylon-12 (medium particles
diameter: 90% between
3.5 and 12.5 μm) 0.6 0.5 0.7 0.4 almond oil - - 0.2 - Dimethicone Copolymer - - 0.4 - Perfume 0.4 0.4 0.3 0.3 Citric acid 0.1 1.0 - 0.5 Panthenol 0.5 - 0.3 - Tocopheryl acetate 0.1 - 0.2 - Sodium benzoate 0.5 0.5 0.5 0.5 Water ad 100.0 100.0 100.0 100.0

These shampoo compositions showed excellent foaming power with creamy lather (surprisingly also composition No. 3, which contained only a small amount of anionic surfactant) and were easy to distribute on the hair.

When the shampoos were used three times by 10 people each, no allergic or skin-sensitizing effects occurred. Surprisingly, there was a clear preference for the compositions according to the examples over the same compositions that did not contain polyamide powder in terms of the shine, combability, smoothness, looseness, bounce and volume of the hair in a double-blind test on 10 people each.

Claims (4)

1. A hair shampoo containing 5 to 50% by weight, calculated on the total composition, of at least one anionic, nonionic, amphoteric and/or zwitterionic surfactant and at least one powdered polyamide having a particle diameter of at least 80% in the range of 1 to 20 microns. 2. Agent according to claim 1, containing about 0.1 to about 10 wt.% of the powdered polyamide. 3. Composition according to claim 1 or 2, additionally containing at least about 0.25 to 15 wt. % of at least one hair conditioning active ingredient. 4. Agent according to one or more of claims 1 to 3, containing as hair conditioning active ingredient about 0.25 to 15 wt. % of a lipophilic substance and/or synthetic or natural cationic, anionic, nonionic, amphoteric and/or zwitterionic polymers.