FR2492658A1 - Cosmetic contg. polymer of acrylamido-glycolic acid - or N-(oxo-2-pyrrolidino-methyl)acrylamide, esp. for treating hair - Google Patents

Abstract

Cosmetic compsn. contains, in a carrier, a polymer with units derived from the polymerisation of an acrylamide of formula CH2=CH-CONH-R (R is -CH(OH)-COOH (I) or an oxo-2-pyrrolidino methyl radical of formula (II). The polymer may be a homopolymer, or may contain 1-99 wt.% of (I) or (II). Comonomers include N-vinylpyrrolidone, styrene, N-alkyl (meth)acrylamides, and alkyl or dialkylaminoalkyl (meth)acrylates. The mol. wt. of the (co)polymer is 1,000-200,000 (1,500-100,000). The polymer is prepd. by soln., suspension, emulsion or bulk polymerisation, using a free radical initiator or ultraviolet radiation, and opt. a chain-transfer agent. The polymers are used as cosmetics as solns., esp. in water and/or lower alcohols, creams, gels, emulsions, milks or aerosols, or in nail varnish. They are partic. used for treating hair. The hair has a good colour, is softer and more shiny, and is easier to comb. The consistency of skin care prepns. is improved. With nail varnish, the adhesion and polish are better.

Description

 The subject of the present invention is novel cosmetic compositions based on polymers comprising units which are based on acrylamidoglycolic acid or N- (2-oxo-pyrrolidino methyl) acrylamide.

 Compared to polymers containing N-substituted acrylamide units already described and used in cosmetics, polymers comprising units derived from acrylamidoglycolic acid or N- (2-oxo-pyrrolidino methyl) acrylamide, hereinafter referred to as expression "polymers according to the invention" make it possible to confer on the cosmetic compositions various particularly sought after properties.

 Thus, when these polymers according to the invention are used in hair setting lotions or in lacquers, they lead to excellent resistance of the hair and make the hair softer and shinier and are well removed by shampooing.

 Moreover, when these polymers are used in shampoos, rinses or other compositions for the care of the hair they give the hair better disentangling and excellent shine.

 When these polymers according to the invention are introduced as a main or secondary ingredient in products for skin care they improve their consistency and confer excellent properties.

 Finally, the polymers according to the invention can advantageously replace some of the resins used in the compositions in the form of nail polish, which makes it possible to improve their adhesion, their resistance in time and their gloss.

soit le radical:

The present invention relates to a cosmetic composition containing in a suitable vehicle at least one polymer comprising units derived from the polymerization of an acrylamide of formula:
CH2 = CH - CONH - R (I) in which:
R represents either the radical:

either the radical:

soit des copolymères c'est-à-dire comportant en outre des motifs d'au moins un autre monomère insaturé.These polymers can be either homopolymers that is to say exclusively consisting of acry acid units

or copolymers that is to say further comprising units of at least one other unsaturated monomer.

 In the latter case the units of acrylamidoglycolic acid or N- (2-oxo-pyrrolidino methyl) acrylamide may be present in a proportion of between 1 to 99% by weight.

 Among the monomers capable of being copolymerized, mention may be made of N-vinylpyrrolidone, styrene, N-alkyl substituted acrylamides or methacrylamides, alkyl or dialkylaminoaklyl acrylates or methacrylates as well as certain polyoxyethylenated acrylates or methacrylates.

dans laquelle R1 représente un atome d'hydrogène ou un radical méthyle et R2 représente un radical alkyle, linéaire ou ramifié, ayant de 1 à 5 atomes de carbone et parmi ceux-ci le N-méthylacrylamide, ou le N-tertiobutylacrylamide.N-alkylacrylamides or methacrylamides may be represented by the following formula:

wherein R1 represents a hydrogen atom or a methyl radical and R2 represents a linear or branched alkyl radical having from 1 to 5 carbon atoms and among these N-methylacrylamide, or N-tert-butylacrylamide.

dans laquelle R'1 représente un atome d'hydrogène ou un radical méthyle et R3 représente un radical alkyle, linéaire ou ramifié, ayant de 1 à 18 atomes de carbone ou un radical de formule:

dans laquelle r' et r", identiques ou différents representent un radical alkyle ayant de 1 à 5 atomes de carbone et leurs dérivés quaternaires. Alkyl or dialkylaminoalkyl acrylates or methacrylates may be represented by the following formula:

in which R'1 represents a hydrogen atom or a methyl radical and R3 represents a linear or branched alkyl radical having from 1 to 18 carbon atoms or a radical of formula:

in which r 'and r ", which are identical or different, represent an alkyl radical having from 1 to 5 carbon atoms and their quaternary derivatives.

 Among these compounds, mention may in particular be made of methyl, ethyl, propyl, tert-butyl, octyl, dodecyl and octadecyl acrylate or methacrylate, as well as the N, N-dimethylamino acrylates or methacrylates. 2 ethyl or N, N-diethylamino-2 ethyl quaternized or not.

 The polymers according to the invention preferably have a molecular weight between 1,000 and 200,000 and more particularly between 1,500 and 100,000.

 These polymers can be prepared by solution polymerization in an organic solvent such as: alcohols, esters, ketones or hydrocarbons.

 Among these solvents, mention may in particular be made of methanol, isopropanol, ethanol, ethyl acetate, ethyl methyl ketone, benzene, etc.

 The polymerization can also take place in suspension or emulsion in an inert solvent such as water.

 Moreover, the copolymerization can also be carried out in bulk.

 These polymerizations are carried out in the presence of a free-radical-generating polymerization catalyst, such as benzoyl peroxide, lauroyl peroxide, azobisisobutyronitrile, hydrogen peroxide, the various oxidation-reduction pairs such as (NH 4 ) 4S208, FeC12 etc ... or can be initiated by means of UV irradiation

 The catalyst concentration can vary between 0.2 and 10% by weight relative to the monomers reacted and as a function of the molecular weight of the copolymers that one seeks to obtain.

 On the other hand, if it is desired to obtain low molecular weight polymers, it is possible to use chain transfer agents such as aldehydes, halogenated compounds, etc. For example, it is possible to use butyraldehyde. , carbon tetrachloride etc ...

 The cosmetic compositions according to the invention contain the polymers defined above either as main active ingredient or as additive.

 These cosmetic compositions may be in the form of aqueous, alcoholic or aqueous-alcoholic solutions, the alcohol being in particular a lower alkanol such as ethanol or isopropanol, or in the form of creams, gels, emulsions, milks or in the form of aerosol cans also containing a propellant or in the form of nail polish.

 The adjuvants generally present in the cosmetic compositions of the invention are, for example, perfumes, dyes, preserving agents, sequestering agents; thickeners, etc.

 It should be noted that the cosmetic compositions according to the invention are both ready-to-use compositions and concentrates to be diluted before use. The cosmetic compositions of the invention are therefore not limited to a particular area of polymer concentration.

 Generally, in the cosmetic compositions according to the invention, the polymer concentration is between 0.1 and 15% by weight, and preferably between 0.5 and 10% relative to the total weight of the composition.

 The cosmetic compositions based on the polymers described above have in particular interesting cosmetic properties when they are applied to the hair.

 This is how when applied to the hair they significantly improve the quality of the hair.

 For example, they promote the treatment and facilitate the disentangling of wet hair.

 The cosmetic compositions according to the invention are in particular hair cosmetic compositions, characterized in that they contain at least one polymer as described above.

 These hair cosmetic compositions generally comprise at least one adjuvant usually used in hair cosmetic compositions.

 These hair cosmetic compositions may be presented in the form of aqueous, alcoholic or aqueous-alcoholic solutions (the alcohol being a lower alkanol such as ethanol or isopropanol), or in the form of creams, gels or emulsions, or still in the form of sprays. They can also be packaged in the form of aerosol cans, also containing a propellant such as, for example, nitrogen, nitrous oxide, hydrocarbons or chlorofluorocarbons of the "Freon" type, such as "Freon 11" and "Freon 12" or mixtures of these thrusters.

 The adjuvants generally present in the hair cosmetic compositions according to the invention are, for example, perfumes, dyes, preserving agents, sequestering agents, thickening agents, emulsifying agents.

 The polymers may be present, in the hair cosmetic compositions according to the invention, either as main active ingredient, in styling lotions, lacquers, treatment lotions, creams or styling gels, or as an additive in shampoos, stylings, perms, tinctures, restructuring lotions, treating lotions or hair lacquers.

The hair cosmetic compositions according to the invention are therefore in particular:
a) treating compositions characterized in that they comprise, as active ingredient, at least one polymer according to the invention in aqueous or aqueous-alcoholic solution.

 The polymer content may vary between 0.1 and 10% by weight, and preferably between 0.1 and 5%.

 The pH of these lotions is close to neutrality and may vary, for example, from 6 to 8. If necessary, the pH may be brought to the desired value by adding either an acid such as citric acid or a base, especially a alkanolamine such as monoethanolamine or triethanolamine.

 To treat the hair with such a lotion, the said lotion is applied to wet hair, it is left to act for 3 to 15 minutes, and then the hair is optionally rinsed.

We can then proceed, if desired, to a setting classic folds;
b) shampoos, characterized in that they comprise at least one polymer according to the invention and at least one cationic detergent, nonionic, anionic or amphora.

 The cationic detergents are in particular long-chain quaternary ammoniums, esters of fatty acids and aminoalcohols, or polyether amines.

 Nonionic detergents include esters of polyols and sugars, condensation products of ethylene oxide on fatty substances, long-chain alkyl phenols, long-chain mercaptans or long-chain amides. and polyethers of polyhydric fatty alcohols.

 The anionic detergents are in particular the alkaline salts, the ammonium salts or the salts of amines or amino alcohols of fatty acids such as oleic acid, ricinoleic acid, coconut oil acids or hydrogenated coconut oil; alkaline salts, ammonium salts or aminoalcohol salts of fatty alcohol sulfates, especially C12C14t and C16 fatty alcohols; alkaline salts, magnesium salts, ammonium salts or aminoalcohol salts of oxyethylenated fatty alcohol sulfates; the condensation products of fatty acids with isethionates, with taurine, with methyltaurine, with sarcosine, etc. alkylbenzenesulfonates, especially with C 12 alkyl; alkylaryipolyether sulphates, monoglyceride sulphates, etc. All these anionic detergents, as well as many others not mentioned here, are well known and are described in the literature.

 The amphoteric detergents are in particular alkylamino mono and di-propionates, betaines and cycloimidinium such as alkyllimidazolines.

 These shampoo compositions may also contain various adjuvants such as, for example, fragrances, dyes, preservatives, thickeners, foam stabilizers, softeners, or other cosmetic resins.

 In these shampoos, the concentration of detergent is generally between 5 and 50% by weight and the polymer concentration according to the invention between 0.1 and 10%, and preferably between 0.1 and 5%.

 c) styling lotions, in particular for sensitized hair, characterized in that they contain at least one polymer according to the invention, in aqueous, alcoholic or aqueous-alcoholic solution.

 These compositions may further contain another cosmetic resin.

 The concentration of polymer according to the invention in these styling lotions generally varies between 0.1 and 5% and preferably between 0.2 and 3%.

The pH of these styling lotions generally varies between 3 and 9 and preferably between 4.5 and 7.5. The pH may be varied, if desired, for example by addition of an alkanolamine such as monoethanolamine or triethanolamine;
d) hair dyeing compositions, characterized in that they comprise at least one polymer according to the invention, a coloring agent and a support.

 The polymer concentration in these dyeing compositions can vary between 0.5 and 15% by weight, and preferably between 0.5 and 10%.

 In the case of oxidation dyeing, the dyeing composition can be packaged in two parts, the second part being hydrogen peroxide. Both parts are mixed at the time of use.

 e) hair lacquers, characterized in that they contain an alcoholic or aqueous-alcoholic solution of at least one polymer according to the invention, this solution being placed in an aerosol flask and mixed with a propellant.

 In these hair spray compositions, the polymer concentration generally ranges from 0.1 to 3% by weight.

 Of course, it is possible to add to these hair lacquers according to the invention adjuvants such as dyes, plasticizers or any other usual adjuvant.

 The polymers according to the invention also have interesting cosmetic properties when they are applied to the skin.

 In particular, they promote the hydration of the skin, and thus prevent it from drying out. They also give the skin an appreciable softness to the touch.

 The cosmetic compositions according to the invention may be cosmetic compositions for the skin characterized in that they contain at least one polymer according to the invention.

 In addition, they generally contain at least one adjuvant usually used in cosmetic compositions for the skin.

 The cosmetic compositions for the skin according to the invention are presented for example in the form of creams, gels, emulsions or aqueous, alcoholic or aqueous-alcoholic solutions.

 The polymer concentration in these skin compositions generally ranges from 0.1 to 10% by weight.

 The adjuvants generally present in these cosmetic compositions are, for example, perfumes, dyes, preserving agents, thickening agents, sequestering agents, emulsifying agents, sunscreens, etc.

 These compositions for the skin are especially creams or lotions treating the hands, face or body, sun creams, tinted creams, milks makeup removers.

 In creams or milks the oily phase may consist of various products such as paraffin oil, petroleum jelly, sweet almond oil, avocado oil, olive, esters of fatty acids such as glyceryl monostearate, ethyl or isopropyl palmitates, alkyl myristates such as propyl, butyl or cetyl myristates. It is also possible to add fatty alcohols such as cetyl alcohol or waxes such as, for example, beeswax.

 The compositions according to the invention may also be in the form of nail polish and preferably contain from 3 to 15% by weight of polymer according to the invention in combination with a plasticizer, a film-forming agent and a solvent system. that is, conventional solvents and conventional diluents for this type of composition, the solvent system constituting 60 to 80% by weight of the varnish.

 In some cases these varnishes may also contain coloring agents in a proportion of 0.05 to 6% by weight relative to the total weight of the varnish.

 These varnishes according to the invention provide excellent gloss and very good behavior over time.

 Several examples of polymer preparation as well as examples of cosmetic compositions will now be given by way of illustration and without any limitation.

PREPARATION OF POLYMERS
EXAMPLE 1
Preparation of the homopolymer of acrylamido glycolic acid
In a 50 ml flask fitted with a stirrer, 4 g of acrylamido glycolic acid are dissolved in nitrogen under 12 g of ethanol in the presence of 0.1 g of azobisisobutyronitrile for 8 hours at 800.degree. After precipitation in acetone and drying, the polymer is obtained with a yield of 60%.

 Viscosity at 5% in dimethylformamide (DMF) at 34.60 ° C = 4.24 cPo.

EXAMPLE 2
Preparation of the acrylamido glycolic acid terpolymer 30% / N-tert-butylacrylamide 40% / methyl methacrylate 30%
In a 100 ml flask equipped with a mechanical stirrer, 20 g of a mixture of 30% of acrylamido glycolic acid, 40% of N-tert-butylacrylamide and 30% of methyl methacrylate are polymerized under nitrogen in 20 ml of water. ethanol, in the presence of 0.06 g of azobisisobutyronitrile for 8 hours at 800C. After precipitation in ethyl ether and drying, the polymer is obtained with a yield of 80%.

 Viscosity measured under the same conditions as in Example 1 = 4.30 cPo.

The polymers of Table I below are obtained according to the same procedure as that described in Example 2 above.
TABLE I

<SEP> Monomers <SEP>% <SEP> Ex. <SEP> Ex.4 <SEP> Ex.5 <SEP> Ex.6 <SEP> Ex.7 <SEP> Ex.8 <SEP> Ex.9 <SEP> Ex.10 <SEP> Ex.11
<tb><SEP> Acid <SEP> acrylate
<tb><SEP> midoglycolic <SEP> 50 <SEP> 50 <SEP> 50 <SEP> 50 <SEP> 50 <SEP> 50 <SEP> | <SEP> 10 <SEP> 15 <SEP> 12
<tb><SEP> N-tertio <SEP> butyl
<tb><SEP> acrylamide <SEP> 50 <SEP> | <SEP> 90 <SEP> 12
<tb><SEP> Methacrylate <SEP>
<tb><SEP> of <SEP> methyl <SEP> 1 <SEP> 50 <SEP> 43 <SEP> 34
<tb><SEP> Methacrylate
<tb><SEP> of <SEP> N, N-dimethyl
<tb><SEP> 2-Llaminoethyl <SEP> 50 <SEP> 42 <SEP> 42
<tb><SEP> Methacrylate
<tb><SEP> of <SEP> N, N-dimé
<tb><SEP> thylamino-2
<tb><SEP> ethyl <SEP> qua
<SEP> tarnished <SEP> at
<tb><SEP> (CH3) 2 <SEP> SO4 <SEP> 50
<tb><SEP> N-vinyl <SEP> pyrro
<tb><SEP> lidone <SEP> 50
<tb><SEP><SEP> Acrylate <SEP>
<SEP> - <SEP>
<SEP> lyoxyethylene <SEP> 50
<tb><SEP> Yield <SEP>% <SEP> 75 <SEP> 92 <SEP> 63 <SEP> 57 <SEP> 85 <SEP> 77 <SEP> 98 <SEP> 67 <SEP> 88
<tb><SEP> (a) <SEP> (a) <SEP> (b) <SEP> (b) <SEP> (b) <SEP> (b) <SEP> (a) <SEP> (a) ) <SEP> (a)
<tb><SEP> Viscosity <SEP> (cPO)
<tb><SEP> 5.64 <SEP> 4.61 <SEP> 4.39 <SEP> 3.86, <SEP> 6.07 <SEP> 9.69 <SEP> 3.06 <SEP> 3 , 47 <SEP> 2,64
<tb> (a) in 5% solution in DMF at 34.60C (b) in 5% solution in water at 34.60C
EXAMPLE 12
Preparation of N- (2-oxo-pyrrolidino methyl) acrylamide homopolymer
500 g of N- (2-oxo-pyrrolidino-methyl) -acrylamide, 100 ml of ethanol and 0.25 g of azobisisobutyronitrile are introduced into a 500 ml flask equipped with a stirrer. The reaction mixture is heated under nitrogen for 8 hours at 800.degree. then the polymer formed is precipitated in 5 l of acetone. After drying under reduced pressure, 30 g of polymer are obtained.

Viscosity: 1.50 cPo (in 5% solution in DMF at 34.60C
EXAMPLE 13
Preparation of terpolymer N- (2-oxo-pyrrolidino methyl) acrylamide 10% / butyl methacrylate 30% / ethyl acrylate 60%
In a 500 ml flask fitted with a stirrer, 30 g of butyl methacrylate, 60 g of ethyl acrylate, 10 g of N- (2-oxo-pyrrolidino methyl) acrylamide, 100 g of ethyl acetate and 2 g of ethyl acetate are introduced. azobisisobutyronitrile. The mixture is heated for 15 hours under reflux, then it is poured into 8 l of heptane. After filtration and drying, the polymer is obtained with a yield of 95%.

EXAMPLE 14
Preparation of terpolymer N- (2-oxo-pyrrolidino methyl) acrylamide 10% / butyl methacrylate 60% / ethyl acrylate 30%
According to the same procedure as that of Example 13, 60 g of butyl methacrylate, 30 g of ethyl acrylate and 10 g of N- (oxo-2-pyrrolidino methyl) acrylamide are copolymerized.

Yield 93%.

EXAMPLES OF COMPOSITIONS
EXAMPLE A
A styling lotion is prepared according to the invention by mixing the following ingredients:
Polymer prepared according to Example 1 2g
Perfume 0, lg
Ethyl alcohol 50g Water qs b 100g
This styling lotion applied in a conventional manner makes it possible to give the hair a shiny appearance and excellent durability over time.

 In this example, the polymer according to Example 1 can be replaced by one of the polymers of Examples 2 and 4.

EXAMPLE B
A styling lotion is prepared according to the invention by mixing the following ingredients:
Polymer prepared according to Example 6 3.5 g
Perfume 0, lg
Coloring ............................................. 0,2g
Isopropyl alcohol ................................... 50g
Water qs ............................................. 100g
After impregnation of the hair with this lotion, the hair is rolled on rolls of hair with a diameter of 15 to 30 mm and then the hair is dried. After removal of the rollers, an excellent setting of a very good resistance over time is obtained.

 In this example, the polymer according to Example 6 can be replaced by the polymer according to Example 12.

EXAMPLE C
An aerosol lacquer is prepared according to the invention by mixing the following ingredients:
Polymer prepared according to Example 3 8g
Perfume................................................. 0.2g
Absolute ethyl alcohol qs 100g
25 g of this solution are then packaged in an aerosol can in the presence of 47 g of trichlorofluoromethane and 28 g of dichlorodifluoromethane.

 After spraying, the hair is shiny, soft to the touch and the resin is easily removed by brushing.

EXAMPLE D
An aerosol lacquer is prepared according to the invention by mixing the following ingredients:
Polymer prepared according to Example 10 2g
Ethanol 40g
Perfume 0.3g Methylene chloride, 20g
Amino-2-methyl-2-propanol-1 qsp pH = 7
Propellant: 35% propane / 65% mixture
butane 40g
By spraying, we obtain a lacquering hair that makes them shiny and soft to the touch. This lacquer is very good at shampooing.

EXAMPLE E
A body-forming body milk is prepared according to the invention by mixing the following ingredients:
Diethyl hexyl adipate 4.8g
Stearic acid 2.9g
Ethoxylated lanolin alcohol at 5 mol. 0.5g
Cetyl alcohol 0,4g
Glycerol Stearate 1.0g
Triethanolamine 0.95g
Propylene glycol ....................................... 4.8g Polymer prepared according to the example 8 - 0.5g
Conservative qs
Perfume qs
Sterile demineralized water qs 100g
EXAMPLE F
A skin lotion is prepared according to the invention by mixing the following ingredients:
Polymer prepared according to Example 5 1.0 g Propylene glycol * 2.0 g
Ethanol 10.0g
Methyl parahydroxybenzoate
(conservative) 0.2g
Perfume qs
Dye ............................................... qs
Sterile demineralized water 9.5.P 100g
The polymer is dissolved in the preservative solution (total water + preservative) at 60 C.

 After cooling, the other elements are incorporated with moderate stirring.

EXAMPLE G
A foundation is prepared according to the invention by mixing the following ingredients:
Partial glyceride of fatty acid 9,00g
Cetylstearyl alcohol ethoxylated
10 mol. OE ......................................... 4,00g
Paraffin oil 18,00g
Polymer prepared according to Example 9 1.00 g
Silicates of magnesium and aluminum ... 0,75g
"Rhodorsil" silicone antifoam 0.20g
Parahydroxybenzoate of alkyls 0.20g
Permuted water ............................. 66,85g
Mineral dyes 5,00g
105,00g
EXAMPLE H
According to the invention, a rinsing product is prepared in the form of a fluid emulsion by mixing the following ingredients:
Vaseline oil 9.5g
Polyglycerolated fatty alcohols (C16-Cl8)
using 2 to 6 moles of glycerol 6.5g
Polymer obtained according to Example 7 1.5 g
Water qs ............................... 100g
This product is applied on washed hair and wrung out by spreading it carefully over the whole of the hair and by massaging it slightly. After an application time of about 2 minutes, it is then rinsed thoroughly. The hair has a brilliant shine and is easy to disentangle.

EXAMPLE I
A shampoo is prepared according to the invention by mixing the following ingredients:
Lauryl myristyl triethano sulfate
laminate 12g
Copra 2g diethanolamide
Myristyl dimethylamine oxide 1.5g
Polymer obtained according to Example 2 1.5 g
Lactic acid qsp pH = 6.5
Water qs ............................... 100g
This shampoo has excellent cosmetic properties. After its application the disentangling of wet hair is very easy and the hair after drying is shiny, soft and supple.

EXAMPLE J
A shampoo is prepared according to the invention by mixing the following ingredients:
Cetyl trimethyl ammonium bromide 2g
Polyglycerol lauryl alcohol at 4 moles
glycerol .............................. 12g
Polymer obtained according to Example 5
Perfume 0,2g
Lactic acid qsp pH = 4.5
Water qs .............................. 100ml
This shampoo applied to the hair provides a soft and aerated foam. It allows very easy disentangling of wet hair. After drying, the hair is soft, very shiny and has a light appearance.

EXAMPLE K
A shampoo is prepared according to the invention by mixing the following ingredients:
Diol en -C14polyglycerol
3-4 moles aeglycerol 17g
Polymer obtained according to Example 4 2g
Cetyl pyridinium chloride ........... 0-, 8g
2.5g lauric diethanolamide
Perfume 0,2g
Lactic acid qsp pH = 5.5
Water qs .............................. 100ml
This shampoo is clear and provides abundant and fairly soft foam.

 I1 promotes the disentangling of wet hair whether natural, colored or discolored.

 After drying the hair is soft, light and shiny.

EXAMPLE L
According to the invention, a nail polish is prepared by mixing the following ingredients:
Nitro cellulose RS 1/2 seconds 16g
Polymer obtained according to Example 9 6g
Ethyl alcohol ........................ 49
Butyl alcohol 4g
Camphor 2g
Butyl patalate ...................... 49
Toluene 20g
Ethyl acetate 10g Butyl acetate - 34g
100g
This nail polish applied on the nails has a very good adhesion and excellent shine over time.

 In this example the polymer according to Example 9 can be replaced by one of the polymers of Examples 13 and 14.

EXAMPLE M
A colored nail polish is prepared according to the invention by mixing the following ingredients:
Basic varnish as described. at
example L ............................. 96.88g
Bentone 27 (benzyl-dodecyl dimethylam
monium montmorilïonite) ................... 1g
Phosphoric acid 0.02g
Titanium oxide ......................... 1g
D and C Red n 7 .......................... 0.4g
D and C Red n 11 ......................... 0,2g
D and C Red n 5 .......................... 0.3g
Red iron oxides ...................... 0,2g
100g
This nail polish has excellent gloss and a very good adhesion.

Claims (14)

 Cosmetic composition, characterized in that it contains in a suitable vehicle at least one polymer comprising units derived from the polymerization of an acrylamide of formula:  CH 2 = CH - CONH - R (I) wherein R represents either the radical

 either the radical:

 2. Composition according to claim 1, characterized in that the polymer is a homopolymer of acryamidoglycolic acid or N- (oxo-2 pyrrolidino methyl) acrylamide.  3. Composition according to claim 1, characterized in that the polymer is a copolymer resulting from the copolymerization of 1 to 99% by weight of acrylamidoglycolique acid or N- (oxo-2 pyrrolidinomethyl) acrylamide and at least one other unsaturated monomer.  4. Composition according to any one of claims 1 and 3, characterized in that the unsaturated monomer is (i) N-vinylpyrrolidone, (ii) styrene, (iii) Nalkylacrylamides or methacrylamides of formula:

 in which R1 represents a hydrogen atom or a methyl radical and R2 represents a linear or branched alkyl radical having from 1 to 5 carbon atoms, and (iv) alkyl or dialkylaminoalkyl acrylates or methacrylates of formula:

 in which R'1 represents a hydrogen atom or a methyl radical and R3 represents a linear or branched alkyl radical having from 1 to 18 carbon atoms or a radical of formula:

 in which r 'and r ", which are identical or different, represent an alkyl radical having from 1 to 5 carbon atoms and their quaternary derivatives.  5. Composition according to any one of the preceding claims, characterized in that the polymer has a molecular weight of between 1,000 and 200,000 and more particularly between 1,500 and 100,000.  6. Composition according to any one of the preceding claims, characterized in that the polymer is present in the composition in a proportion of between 0.1 and 15% by weight and preferably between 0.5 and 10%.  7. Composition according to any one of the preceding claims, characterized in that the cosmetic vehicle is an aqueous solution, alcoholic or aqueous-alcoholic (said alcohol being methanol or isopropanol), a cream, a gel, a milk or an emulsion.  8. Composition according to any one of claims 1 to 6, characterized in that the cosmetic vehicle is a mixture of at least one alcohol such as ethanol or isopropanol and a propellant gas under pressure.  9. Composition according to any one of claims 1 to 7, characterized in that it further contains a cationic, nonionic, anionic or amphoteric detergent or mixtures thereof in a proportion of between 5 and 50% by weight.  10. Composition according to any one of claims 1 to 7, characterized in that it contains a coloring agent in a support in the form of cream, gel or emulsion and is a hair dye composition.  11. Composition according to any one of claims 1 to 7, characterized in that the cosmetic vehicle is a solution, a cream, a gel, an emulsion, a milk containing the polymer in a concentration between 0.1 and 10. % by weight and intended for application on the skin.  12. Composition according to any one of the preceding claims, characterized in that it additionally contains various adjuvants such as preserving agents, perfumes, dyes, sequestering agents, thickening agents, emulsifying agents and / or antisolar agents.  13. Composition according to any one of claims 1 to 6, characterized in that it is in the form of a nail polish and contains from 3 to 15% by weight of polymer, a plasticizer, an agent film-forming and a solvent system.  14. A composition according to claim 13, characterized in that it further contains a coloring agent in a proportion of 0.05 to 6% by weight.