PROCESS FOR STYLING THE HAIR WITH A POLYVINYLPYRIDINE

Abstract

The invention relates to a hairstyling process comprising the following steps:

the application to the hair of a first cleansing cosmetic composition comprising one or more surfactants;
the application of a second aqueous cosmetic composition comprising a neutralized non-crosslinked vinylpyridine polymer;
followed by a step of rinsing with water and then a step of shaping the hair, and then a step of drying the hair.

The invention also relates to a kit comprising a first cleansing cosmetic composition comprising one or more surfactants and a second aqueous cosmetic composition comprising a neutralized non-crosslinked vinylpyridine polymer, the first and second compositions each being packaged in a separate packaging assembly.

Claims

1. Hairstyling process comprising the following steps: the application to the hair of a first cleansing cosmetic composition comprising one or more surfactants; the application of a second aqueous cosmetic composition comprising a vinylpyridine polymer, which is a neutralized non-crosslinked ethylenic polymer derived from the polymerization of: (A) from 5% to 100% by weight of a vinylpyridine monomer (Ia) and/or (Ib): ##STR00002## (b) 0 to 95% by weight of at least one additional nonionic or cationic ethylenic monomer chosen from: optionally hydroxylated C.sub.1-12 alkyl (meth)acrylates; (meth)acrylamides bearing a group NH.sub.2 or NHR, R being a C.sub.1-C.sub.12 alkyl group, or NR.sub.1R.sub.2, R.sub.1 and R.sub.2 being a C.sub.1-C.sub.12 alkyl group such that the total sum of the carbon number of R.sub.1+R.sub.2 is less than or equal to 18; vinyl esters RCOOCHCH.sub.2, R being a C.sub.1-C.sub.18 alkyl radical; vinyl ethers ROCHCH.sub.2, R being a C.sub.1-C.sub.18 alkyl radical; olefins, in particular C.sub.2-C.sub.20 alpha-olefins; vinyl alcohol, vinylpyrrolidone, vinylcaprolactam, N-vinylformamide, N-methyl-N-vinylformamide; N-methyl-N-vinylacetamide; vinyl butyral; vinyl carbazole; vinyl chloride; vinylidene chloride (or 1,1-dichloroethylene), cis-isoprene, trans-isoprene; vinylaromatic monomers containing from 8 to 20 carbon atoms and better still containing from 8 to 14 carbon atoms; and mixtures thereof; the polymer not containing any anionic monomer; said polymer being at least 10% neutralized; followed by a step of rinsing with water and then a step of shaping the hair, and then a step of drying the hair.

2. Process according to the preceding claim, in which the first composition comprises one or more surfactants chosen from anionic surfactants, nonionic surfactants and amphoteric surfactants, and mixtures thereof, and preferably from anionic surfactants.

3. Process according to either of the preceding claims, in which the first composition comprises a total amount of surfactants ranging from 1% to 50% by weight, preferably ranging from 2% to 35% by weight and preferentially from 3% to 25% by weight, relative to the total weight of the composition.

4. Process according to the preceding claim, in which the additional ethylenic monomer is preferably chosen from styrene, butyl methacrylate, 2-hydroxyethyl methacrylate, lauryl methacrylate, ethylene, propylene and butadiene, and mixtures thereof.

5. Process according to one of the preceding claims, in which the vinylpyridine polymer is neutralized with one or more acids, chosen especially from sulfuric acid, hydrochloric acid, hydrobromic acid, hydriodic acid, phosphoric acid, propionic acid, acetic acid, lactic acid, terephthalic acid, citric acid and tartaric acid, the acid of formula HO.sub.2CCH.sub.2(CH.sub.2CH.sub.2O).sub.nCH.sub.2CO.sub.2H with n ranging from 4 to 20, betaine HCl [(CH.sub.3).sub.3N+CH.sub.2CO.sub.2H.Cl.sup.], gluconic acid, 2-ethylcaproic acid, oleic acid, behenic acid, stearic acid, glutamic acid and aspartic acid, and preferably hydrochloric acid.

6. Process according to one of the preceding claims, in which the vinylpyridine polymer is chosen from poly(4-vinylpyridinium) chloride, poly(2-vinylpyridinium) chloride, poly(4-vinylpyridinium) chloride-co-styrene; poly(2-vinylpyridinium) chloride-co-styrene, poly(4-vinylpyridinium) chloride-co-butyl methacrylate, poly(4-vinylpyridinium) chloride-co-butadiene; poly(2-vinylpyridinium) chloride-co-butadiene.

7. Process according to one of the preceding claims, in which the vinylpyridine polymer is chosen from 2-vinylpyridine homopolymer and 4-vinylpyridine homopolymer.

8. Process according to one of claims 1 to 6, in which the content of 2-vinylpyridine and/or 4-vinylpyridine monomers ranges from 50% to 100%, preferably ranges from 55% to 100% and preferentially ranges from 60% to 100% of the total weight of monomers of the vinylpyridine polymer.

9. Process according to one of the preceding claims, in which the neutralized vinylpyridine polymer is water-soluble or water-dispersible.

10. Process according to one of the preceding claims, in which the vinylpyridine polymer has a weight-average molecular weight ranging from 1000 to 300 000 g/mol, preferably ranging from 1000 to 200 000 g/mol and especially, when the vinylpyridine polymer is a homopolymer, ranging from 1000 to 20 000 g/mol.

11. Process according to one of the preceding claims, in which the vinylpyridine polymer is present in the aqueous composition in a content ranging from 0.5% to 20% by weight, preferably ranging from 1% to 15% by weight and more preferentially ranging from 5% to 15% by weight relative to the total weight of the composition.

12. Process according to one of the preceding claims, in which the second composition does not contain any anionic surfactant.

13. Process according to one of the preceding claims, in which the following are applied to the hair, in this order: the second cleansing cosmetic composition without performing rinsing, and then the first aqueous cosmetic composition comprising the vinylpyridine polymer, the mixture is then left to act, especially for 10 seconds to 10 minutes, it is then rinsed out with water, and the hair is then shaped and dried.

14. Process according to one of the preceding claims, in which the following are applied, in this order: the first aqueous cosmetic composition comprising the vinylpyridine polymer, without performing rinsing, and the second cleansing cosmetic composition is then applied, and the mixture is then left to act, especially for 10 seconds to 10 minutes, and it is then rinsed out with water, and the hair is then shaped and dried.

15. Kit comprising: a first cleansing cosmetic composition comprising one or more surfactants as defined in one of claims 1 to 3 and a second aqueous cosmetic composition comprising a vinylpyridine polymer as defined in one of claims 1 and 4 to 12, the first and second compositions each being packaged in a separate packaging assembly.

Description

EXAMPLE 1

[0081] 10 g of poly(4-vinylpyridine) Mw 60 000 (reference 472344 from Aldrich) were mixed with 47 ml of 1N HCl, and the mixture was then made up to 100 ml with water. A yellow liquid aqueous solution was obtained.

EXAMPLE 2

[0082] In the same manner as in Example 1, 10 g of poly(4-vinylpyridine) Mw 160 000 (reference 472352 from Aldrich) were mixed with 47 ml of 1N HCl, and the mixture was then made up to 100 ml. A yellow liquid aqueous solution was obtained.

EXAMPLE 3

[0083] In the same manner as in Example 1, 10 g of 4-vinylpyridine/styrene copolymer (reference 192074 from Aldrich) were mixed with 35 ml of 1N HCl, and the mixture was then made up to 100 ml. A pale yellow liquid aqueous solution was obtained.

EXAMPLE 4

[0084] In the same manner as in Example 1, 10 g of 4-vinylpyridine/butyl methacrylate (90/10) copolymer (reference 306258 from Aldrich) were mixed with 42 ml of 1N HCl, and the mixture was then made up to 100 ml. A yellow liquid aqueous solution was obtained.

EXAMPLE 5

[0085] In the same manner as in Example 1, 10 g of poly(2-vinylpyridine) Mw 11 000 (reference 523305 from Aldrich) were mixed with 47 ml of 1N HCl, and the mixture was then made up to 100 ml. A yellow liquid aqueous solution was obtained.

EXAMPLE 6

[0086] In the same manner as in Example 1, 20 g of a 50% AM solution of poly(4-vinylpyridine) Mw 7000 in methanol (Reilline 410 from Vertellus) were mixed with 47 ml of 1N HCl, and the mixture was then made up to 100 ml. The methanol was evaporated off on a rotary evaporator. An orange liquid aqueous solution was obtained.

Comparative Examples 7 to 14 Outside the Invention

[0087] Aqueous solutions containing 10% by weight of polymer were also prepared with the following polymers outside the invention (compositions C1 to C14):

TABLE-US-00001 Concentration Example Polymers in water 7 Poly(2-vinylpyridine) 2% crosslinked 10% with divinylbenzene (reference 547689 from Aldrich), 50% neutralized with HCl 8 Vinylamine/N-vinylformamide copolymer 10% (Luviquat 9030 from BASF) 9 Polydimethyldiallylammonium chloride 10% (Merquat 100 from Nalco) 10 Hydroxypropyl guar trimethylammonium 10% chloride (Jaguar C-13S from Rhodia) 11 Vinylpyrrolidone/dimethylaminoethyl 10% methacrylate copolymer (Copolymer 845-0 from ISP) 12 1-Vinyl-2- 10% pyrrolidone/methacrylamide/1- vinylimidazole terpolymer (Luviset Clear from BASF) 13 Vinylpyrrolidone/vinylimidazole (50/50) 10% copolymer (Luvitec VPI 55K72W from BASF) 14 Vinyl acetate/vinyl p-tert- 10% butylbenzoate/crotonic acid (65/25/10) copolymer (Mexomer PW from Chimex) 50% neutralized with 2-amino-2-methyl- 1-propanol

Shampoo Composition:

[0088] The shampoo sold under the name DOP Camomile by the company Lascad, which contains sodium lauryl ether sulfate (2 ethylene oxide units), was used.

Evaluation of the Hairstyling Properties Obtained with the Hairstyling Processes Using Compositions C1 to C14:

[0089] The following treatment process was performed with each of the compositions of Examples 1 to 6 in accordance with the invention and each of the compositions of the Comparative Examples 7 to 14:

[0090] 1 g of shampoo and then 2 g of the polymer composition were applied to locks of wet hair (2.7 g). The impregnated lock of hair was massaged for 20 seconds. The mixture was left to act at room temperature for 3 minutes, and the locks were then rinsed and dried under a hood at 45 C.

[0091] A panel of five judges was then asked to evaluate the feel of the hair.

Grading:

[0092] Feel: 0 (very poor) to 5 (excellent)

[0093] After 5 hours at room temperature and ambient humidity, the same judges evaluated the lock spiking effect (for excellent lock spiking on a lock, the hairs are stuck together, the lock has set to a solid and forms a stick). [0094] Wear property: 0 (very poor) to 5 (excellent)

TABLE-US-00002 Hairstyling Feel effect Shampoo alone 5 0 Example 1 4 4 Example 2 3.5 4.5 Example 3 3.5 3.5 Example 4 3.5 3.5 Example 5 4.5 4 Example 6 4.5 4.5 Comparative 1 4 1.5 Comparative 2 2.5 0.5 Comparative 3 4.5 0.5 Comparative 4 4.5 0 Comparative 5 3.5 0.5 Comparative 6 3.5 0.5 Comparative 7 3.5 0 Comparative 8 3 0 Comparative 9 1 3 1

[0095] The results obtained show that only the processes using compositions C1 to C6 according to the invention make it possible to obtain a good lock spiking effect. For these compositions, the lock spiking effect was also evaluated on a malleable head according to the following protocol:

[0096] 10 g of shampoo were deposited on the wet malleable head, and 10 g of the composition to be evaluated (composition C1 to C6) were then applied to half of the malleable head. Each of the two half-heads were massaged for 2 minutes and then rinsed with water. The hair was shaped with a comb and then dried under a hood at 45 C. The lock spiking obtained (appearance of the hairstyle) was then evaluated.

[0097] Quality of the lock spiking (appearance of the hairstyle): 0 (very poor) to 5 (excellent)

TABLE-US-00003 Quality of the lock spiking Shampoo alone No lock spiking Example 1 3.5 Example 2 4 Example 3 3.5 Example 4 4 Example 5 4.5 Example 6 4.5

[0098] The treatment processes in accordance with the invention (Example 1 to 6) make it possible to obtain a novel lock spiking effect.

Comparative Example 15 Outside the Invention

[0099] Instead of performing the treatment process in two separate steps, the aqueous solution of poly(4-vinylpyridine) of Example 1 was premixed with the DOP Camomile shampoo (50/50 weight mixture). The mixture is inhomogeneous. The mixture was then applied to a lock of wet hair, according to the protocol described previously.

[0100] During rinsing, the poly(4-vinylpyridine) polymer is removed and is not deposited on the hair in sufficient amount to be able to obtain a lock spiking effect. Under these conditions, no lock spiking effect may be obtained by applying to the hair the mixture of shampoo and of poly(4-vinylpyridine).

Comparative Example 16 Outside the Invention

[0101] The initial polymer of Example 1 was used without performing neutralization. The polymer is insoluble and not dispersible in water. It remains precipitated in the water and, in this form, cannot be used in the hairstyling process. Under these conditions, no lock spiking effect can be obtained with the non-neutralized polymer.