MXPA99010829A - Hair fixing composition - Google Patents

Abstract

A hair fixing composition comprising a) from about 0.5 to about 10 wt.%of a copolymer of polyvinylpyrrolidine and vinylacetate, b) from about 0.5 to about 8 wt.%of at least about 80 wt.%neutralized copolymer of vinylacetate, crotonic acid, and vinylneodecanoate, and c) a solvent system compatible with the combination of copolymer a and copolymer b, the wt.%of a and b in the range of about 1:5 to about 5:1.

Description

FIXING HAIR COMPOSITION BACKGROUND OF THE INVENTION Hair setting compositions usually comprise solutions or suspensions with natural synthetic film-forming polymers. Numerous polymers have been used in hair fixative formulas such as natural materials such as gums, chitosan and protein or synthetic polymer derivatives with specific applications in hair fixation technology such as polyvinylpyrrolidones, polyvinylpyrrolidone-vinylacetate copolymers , acrylates, acrylamides, copolymers containing crotonic acid usually and essentially neutralized with a basic component. Examples of such crotonic acid polymers include neutralized crotonic acid / vinylacetate, and crotonic acid vinylacetate, vinylpropionate and the like. The combinations of the various polymers are now known as the active components in the hair setting formulas such as polyvinyl pyrrolidone vinylacetate (Luviskol®) with neutralized crotonic acid / vinylacetate / vinylpropionate, Luviset® CAP in non-neutralized form, both polymers manufactured by BASF , see WO 94/12147 and Luviskol® with amphoteric, an amphoteric resin of octylacrylamide / acrylates / butylaminoethyl methacrylate copolymer manufactured by National Starch, see DE 4,034,315 Al.

Additionally, the 4,339,499A patent describes a combination of various polymers for styling hair. A terpolymer of vinylpropionate / crotonic acid / neutralized vinylacetate is used. European Patent 0,418.67 A and FR 26 84 000, both refer to hair setting compositions which may contain one or more polymers selected from a list comprising vinyl acetate / vinylpyrrolidone copolymer vinylneodecanoate terpolymer, neutralized crotonic vinyl acetate acid and additional polymers. However, none of the descriptions specifically describes the combination of said two polymers.

The polyvinyl pyrrolidone / vinylacetate hereinafter referred to as "PVP / VA" copolymers has been used in various dual resin compositions. By themselves, these have been successfully marketed as a single resin system for years because of their global clustering of properties, but the main property of the hair fixative, namely its property of "retention" can be improved. Other synthetic polymers have better "retention" properties but lack other attributes which can provide a high quality hair setting formula.

It has now been discovered that a polyvinylpyrrolidone / vinylacetate copolymer can be successfully combined with a copolymer comprising vinylacetate, neutralized crotonic acid and vinyl neodecanoate, obtained as resin 28-2930 or 28-2942 without neutralization from National Starch and obtain a mixture of surprising and highly desirable properties which are essentially better than a combination of PVP / V (Luviskol®) with a copolymer of crotonic acid, neutralized vini acetate and vinyl propionate (Luviset® CAP), which is a closely related combination in structure of polymers for the combination of the invention of polymers SYNTHESIS OF THE INVENTION According to the invention there is provided a hair setting composition comprising: to. from about 0.5 to about 10% by weight of a polyvinylpyrrolidone / vinylacetate, from about 0.5 to 8% by weight of at least 80% by weight of a neutralized polymer of vinylacetate, crotonic acid vini lneodecanoate, and a solvent system compatible with the combination of copolymer a and a copolymer b per cent by weight of a to b in the range of about 1 about 5 and about 5 to about 1.

It should be noted that it is possible that there is chemical reaction between and among the components listed above any other components, which may be present in the composition. Therefore, it is intended to include such a reaction product within the claimed composition as well.

DETAILED DESCRIPTION OF THE INVENTION The copolymer comprising polyvinylpyrrolidone / vinylacetate is obtained from BASF Luviskol®. The amount of each monomer in the polymer preferably ranges from about 20 to about 50 wt.% Of vinylpyrrolidone (VP) and from about 80 to about 50 wt.% Of vinyl acetate (VA), more preferably about 25 to 40. % by weight of vinylpyrrolidone and around 75 to about 60% by weight of vinylpyrrolidone. Especially preferred is the ratio of about 30% vinylpyrrolidone and about 70% by weight of vinyl pyrrolide commercially available from BASF as Luviskol® 371, or 50% by weight polymer solution in isopropanol. Polyvinylpyrrolidone / vinyl acetate copolymer is preferably in the hair composition in amount of from about 1 to about 6% by weight.

The second copolymer comprises a polymer formed from vinylacetate, crotonic acid and vinylneodecanoate. polymer is generally at least neutralized 80 preferably at least about 90% neutralized can be 100% neutralized. Any agent neutralizing basic compatible with the composition can be employed to an inorganic materials such as potassium sodium hydroxide. Organic amines or alkanolamines are generally easily used for neutralization. As indicated, the polymer can be obtained in a non-neutralized form from the Nation Starch Company as Resyn 28-2930 or 28-2942.

Examples of such neutralizing amines include: triethanolamine 2-amino-2-methyl-l, 3-propanediol 2-amino-2-ethyl-l, 3-propanediol 2-amino-2-methyl-l-propanol 2-amino-2-methyl-2-pentanol l -amino-2-methyl-2-propanol 2-amino-1-butanol 3-amino-2-pentanol 2-amino-1-phenyl-1-butanol 2-dimethylamino-2-methyl-1-propanol 2-dimethylamino- 2-methyl-1, 3-propanediol tris- (hydroxymethyl) -aminomethane tris- (hydroxymethyl) -dimethylaminomethane N 1 - (2-hydroxymethyl) -2-methyl-1,2-propanediamine Neutralization with 2-amino-2-methyl- l-propanol or 2-amino-2-methyl-l, 3-propanediol or triethanola is preferred.

The amount of the partially or completely neutralized crotonic acid copolymer present in the composition is preferably from about 1 to about 6% by weight. The polymer preferably a and the polymer b are present in the composition in a ratio by weight d about 1: 3 to about 3: 1 polymer a a polymer b.

The vehicles which carry the polymers are usually alcoholic or hydroalcoholic. The alcohol contained in the hair setting composition is one of the common lower alcohols such as isopropanol and ethanol, typically used in similar types of hair setting compositions. The alcohol can be used between the amounts of about 10% and about 90% by weight of the composition preferably from about 15% to about 85%.

The hair setting composition can contain a total water content of from 0 to about 20% by weight, a water content of from about 0.5 to about 15% by weight being preferred.

The hair setting composition may have pH values between 4.5 - 9.5.

The composition also contains other typical cosmetic ingredients such as perfume, oils, extracts, vitamins and their derivatives / precursors, plasticizers, hydrophobic substances such as silicone derivatives, solubilizers for oils and preservatives up to 1% each by weight if it was found to be advantageous for the composition.

The hair setting composition can be filled in pressurizable containers, preferably with an added propelant used as a hair styling product n propellant.

When the composition is used as an aerosol hair setting product, it contains an additional amount of from 5 to about 65% by weight of the total composition, preferably from about 25% to about 70% by weight of a propellant and fill in an appropriate pressurized container.

Propellants suitable for the hair setting composition include the lower alkanes such as N-butane, iso-butane, propane and mixtures thereof with fluorocarbon 152 a and dimethyl ether as well as the compressed gases such as N2, N20, C02 and mixtures thereof. same with the propellants mentioned above.

When the composition is present as hair spray without spray or a spray for concentrated hair, the composition can be sprayed by using a mechanically operated spray pump device in a satisfactory manner.

A spray pump device operated mechanically allows a liquid to be sprayed without the use of propellants as listed above. An example, but not limited to that is a rosette pump or an elastic container equipped with an attached spray valve in which the fixed composition of the hair is filled under a high pressure expanding container and in which the composition is actuated when opening the valve Sprayer can be used as an appropriate spray device / package.

The hair fixative composition is excellently compatible with free halogen and / or dimethyl ether hydrocarbons and results in amazing hair-setting properties.

The following examples serve to explain the material object of the composition more completely and do not attempt to unduly limit the invention. In the text given below VP is the abbreviation for vinylpyrrolidone and VA is short for vinyl acetate. PVP is polyvinyl pyrrolidone. Resin 28-2930 has previously been identified as vinylacetate crotonic acid, vinyl neodecanoate and Luviset® CAP was previously identified as a copolymer of vinyl acetal vinyl propionate and crotonic acid. Both resin 28-2930 and Luviset® CAP are purchased in an unneutralized form and neutralized with an amine.

The polyvinylpyrrolidone / vinylacetate used in the examples is 30% by weight of 70% polyvinylpyrrolidone per pe of vinylacetate.

EXAMPLES Example 1 The following hair spray formulas are compared for curl retention using the following method. In a standard hair spray high moisture curl retention test of the invention, example 1 is compared to prior art control. Specifically, 3 grams 8 in. Of strands of European virgin brown hair was recently washed with 10% sodium laurel sulfate solution (2E0) and treated with a 3-second hair spray application rolled onto a roll of 5-eighths of an inch. diametr and they were fastened. The rolled locks were left to dry in a closed cabinet with a hair dryer (at a low heat setting) for 30 minutes to simulate drying conditions in a room.

The tufts are unrolled on a curl retention board containing measurement lines where s take the initial curl length readings. Spray retention boards are subsequently placed in an 85% humidity chamber maintained at a temperature of 21.6C per 90 minute period. Typically, 8 tufts are evaluated for each treatment. The readings are taken at 1 minute intervals. The results are evaluated statistically. The results reported in Table I represent the average evaluation for each treatment.

Eieaplo 1 Control ÍPVP / VA & Resin 28- ÍPVP / VA & Luviset® CAP) 29301 Denatured alcohol 37.35 37.39 PVP / VA 50% in 2.00 2.00 1sopropane1 Luviset® CAP - 3.75 Resin 28-2930 3.75 - Phenyl Trimethicone 0.25 0.25 2-amino-2-methyl-l- 0.35 0.31 propanol (AMP-95 ) Fragrance 0.3 0.3 N-butane 22.4 22.4 Dimethyl ether 33.6 33.6 Below are the results The average percent of curling retention from the initial time Initial 15 '30' 45 '60' 75 '90' Control 100 78.6 67.9 61.2 53.4 45.7 42.7 Example 1 100 85.4 80.7 76.4 71.6 67.3 63.7 From these data, it is clear that the composition of the invention provides a curl retention improvement that the related structurally closed composition of the prior art wherein a polymer is the same as that of composition d invention and the second polymer of the compositions of the prior art have two monomers, the same as the second polymer of the invention and the third monomer being vinyl propionate and opposition to the vinyl neodeocanoate of the composition of the invention.

Example 2 Approximately 100 women used each of the two hair sprays described below, one an example of the invention and the second a control for three weeks, using the hair spray at least twice each week. S compared the following formulas. (The amounts are in percent by weight).

B-ia-aplo 2 Control Luviskol® v resin 28- Luviskol * v Luviset * 2930 CAP- »(coao was analyzed) Denatured Alcohol 31.7 31.7 PVP / VA 50% in isopropanol 8.0 8.0 Resin 28-2930 Luviset® CAP 3.1 2-amino-2-methyl-l-propanol 3.0 Other 1 Dimethylether / N-butane mixture 56 56 The composition of the invention, in the example found to be better than the control in at least a confidence level of at least 90% for the following qualities and parameters. Those qualities marketed with an asterisk were found to be better at a 95% confidence level.

Purchase intent * Gives hair style a natural hold * Gives hair an elastic hold * Gives hair good retention * Hair style is still manageable after applying hair spray * Gives hair volume It's easy to wash * Hair is less dry and brittle Less sticky Less residue on hair * Example 3 The compositions of Example 2 are applied to 1 mannequin head in sequence and the characteristics are evaluated by a trained ethologist who is blind to the nature of the compositions. The evaluations are consistent with the results of example 2.

The compositions of the invention are essentially and surprisingly better than the prior art composition in numerous hair care properties.

Claims (13)

R E I V I N D I C A C I O N S

1. A hair setting composition comprising: a) from about 0.5 to about 1 by weight of a polyvinylpyrrolidone and vinyl acetate copolymer b) from about 0.5 to about by weight of at least about 80% by weight of neutralized copolymer of vinyl acetate, crotonic acid vinylneodecanoate, and c) a solvent system compatible with the combination of the copolymer a and the copolymer b, the weight percentage of "a" to "b" in the range of about 1: 5 to about 5: 5.

2. The composition as claimed in clause 1 characterized in that the copolymer has from about 20 to about 50% by weight of vinylpyrrolide and from about 80 to about 50% by weight of vinylacetate.

3. The composition as claimed in clause 2 characterized in that the vinylpyrrolidone is from about 25 to about 40% by weight and the vinyl acetate from about 75 to about 60% by weight.

4. The composition as claimed in clause 1 characterized in that the copolymer a is present in the composition in amounts of about 1 to about 6 by weight.

5. The composition as claimed in clause 1 characterized in that the copolymer b is at least about 90% by weight neutralized.

6. The composition as claimed in clause 1 characterized in that the copolymer b is present in the composition in amounts of from about 1 to about 6% by weight.

7. The composition as claimed in clause 1 characterized in that alcohol or a combination of alcohol and water is present.

8. The composition as claimed in clause 7 characterized in that the alcohol is from about 1 to about 90% of the composition.

9. The composition as claimed in clause 8 characterized in that the water is zero to about 20% by weight of the composition.

10. The composition as claimed in clause 1 characterized in that the pH of the composition is between about 4.5 and about 9.5.

11. The composition as claimed in clause 1 characterized in that it is an aerosol and has a propellant there.

12. The composition as claimed in clause 11 characterized in that the propellant is from about d 5 to about 75% by weight of the total composition.

13. A product which comprises the composition prepared by putting it in contact in any order: a) from about 0.5 to about 10 by weight of a copolymer of polyvinylpyrrolidone and vinylacetate b) from about 0.5 to about 8 or by weight of at least about 80% by weight of neutralized vinylacetate copolymer, crotonic vinylneodecanoate acid; Y c) a solvent system compatible with the combination of copolymer a and copolymer b, the weight per cent of "a" to "b" in the range of about 1: 5 to about 5: 1. E S U M E N A hair setting composition comprising a) from about 0.5 to about 10% by weight of a polyvinylpyrrolidone and vinylacetate copolymer, b) from about 0.5 to about 8% by weight of at least about 80 % by weight of neutralized copolymer of vinylacetate, crotonic acid and vinylneodecanoate, and c) solvent system compatible with the combination of copolymer a of copolymer b, of percent by weight of "a" and "b" in the range of about 1 : 5 to around 5: 1.