COSMETIC COMPOSITIONS COMPRISING SPECIAL CARBODIIMIDES, FOR HAIR

Abstract

The invention relates to a cosmetic composition for hair, containing at least one compound containing at least three carbodiimide groups built according to formula (I), R.sup.4—[R.sup.1—N═C═N].sub.n—R.sup.5 (I), where n is a whole number between 3 and 100, and R.sup.1, R.sup.4 and R.sup.5 each stand, independently of one another, for linear or branched, aliphatic or cycloaliphatic, optionally substituted groups with 1 to 100 C-atoms. The invention also relates to uses of the cosmetic composition for hair, and to a method and the application thereof.

Claims

1. A hair cosmetics composition comprising at least one compound containing at least three carbodiimide groups and having a structure conforming to the formula (I)
R.sup.4—[R.sup.1—N═C═N].sub.n—R.sup.5  (I) where n is an integer from 3 to 100, R.sup.1, R.sup.4 and R.sup.5 are each independently linear or branched, aliphatic or cycloaliphatic, optionally substituted groups having 1 to 100 carbon atoms.

2. The hair cosmetics composition as claimed in claim 1, wherein the compound containing at least three carbodiimide groups has the general formula (II): ##STR00007## in which R.sub.2 and R.sub.3 are independently selected from a radical derived from a monoalkoxy poly(ethylene glycol) of the general formula (III)
R.sup.6—O—(CH.sub.2—CH.sub.2—O).sub.m—H  (III) with R.sup.6=C.sub.1 to C.sub.30 alkyl or acyl group and m=4 to 30, a radical derived from C.sub.1 to C.sub.30 alcohol, and a radical derived from C.sub.1 to C.sub.30 monoalkoxy ethylene glycol.

3. The hair cosmetics composition as claimed in claim 2, wherein the composition comprises the compound containing at least three carbodiimide groups of the formula (I) or (II) within a range from 0.01% to 50% by weight.

4. The hair cosmetics composition as claimed in claim 1, wherein the composition further comprises at least one of the following components: 1) at least one cosmetically active substance, one or more cosmetic auxiliary substances, or both; 2) at least one solvent or thinner; and 3) at least one film former.

5. The hair cosmetics composition as claimed in claim 4, wherein the at least one film formers comprises a nonionic polymer, an anionic polymer, an amphoteric polymer, a cationic polymer, or a mixture of at least two of these.

6. The hair cosmetics composition as claimed in claim 4, wherein the at least one film former comprises a polyurethane obtainable by reacting one or more water-insoluble, non-water-dispersible, isocyanate-functional polyurethane prepolymers A) with one or more amino-functional compounds B).

7. The hair cosmetics composition as claimed in claim 4, wherein the at least one compound containing at least three carbodiimide groups and the at least one film former are in a weight ratio of 2:1 to 1:4.

8. The hair cosmetics composition as claimed in claim 1, wherein the composition is in a form selected from the group consisting of a pump spray, an aerosol, a gel, a foam, a mousse, a lotion, a wax, a pomade, an oil, a milk, an emulsion, an aqueous solution, and a cream.

9. The hair cosmetics composition as claimed in claim 1, wherein the cosmetic composition is formulated for maintenance of artificially shaped structures of the hair.

10. A cosmetic method of producing a decorative effect on hair, comprising: applying a composition to the hair, where the composition comprise at least one carbodiimide of the formula (I)
R.sup.4—[R.sup.1—N═C═N].sub.n—R.sup.5  (I) where n is an integer from 3 to 100, R.sup.1, R.sup.4 and R.sup.5 are each independently linear or branched, aliphatic or cycloaliphatic, optionally substituted groups having 1 to 100 carbon atoms.

11. The method as claimed in claim 10, further comprising dyeing or shaping the hair prior to applying the composition to the hair.

12. The method as claimed in claim 10, wherein the composition remains at least partly on the hair after application thereto.

13. The method as claimed in claim 10, wherein, in a further step 2), a further composition comprising at least one film former is applied to the hair.

14. The method as claimed in claim 13, wherein step 2) precedes step 1).

15. The method as claimed in claim 13, wherein the hair is heated before steps 1) or 2, during steps 1) or 2), after steps 1) or 2), or a combination thereof.

16. A hair cosmetics composition comprising: 0.5 wt % to 10 wt % based on a total weight of the composition of a compound containing at least three carbodiimide groups and having a structure conforming to the formula (I)
R.sup.4—[R.sup.1—N═C═N].sub.n—R.sup.5  (I) where n is an integer from 3 to 10, R.sup.1 is a linear or branched, aliphatic or cycloaliphatic, group having 4 to 20 carbon atoms, and R.sup.4 and R.sup.5 independently comprise a radical comprising at least one urethane group and at least one group that is a radical derived from a C.sub.1 to C.sub.30 alcohol or a C.sub.1 to C.sub.30 monoalkoxy ethylene glycol; 0.01 wt % to 10 wt % based on a total weight of the composition of a film former comprising a polyacrylate, a polyacrylamide, a polyurethane, a polyurea, a polysiloxane, or a mixture of at least two of these; and water.

Description

[0309] The present invention is elucidated in detail with reference to the following figures, but without being limited thereto. The figures show:

[0310] FIG. 1: Two illustrations (500- and 5000-fold magnification) of a hair without treatment with a composition of the invention in a scanning electron microscope

[0311] FIG. 2: Two illustrations (500- and 5000-fold magnification) of a hair after treatment with a composition of the invention in a scanning electron microscope

[0312] FIG. 1 shows a hair from a hair tress as treated according to example C1-1 in the form of a scanning electron micrograph in secondary electron contrast at an acceleration voltage of 5 kV produced. The FEI Magellan400 scanning electron microscope was used in two different magnification settings. The illustration in FIG. 1 on the left-hand side has been produced with 500-fold magnification and the illustration on the right-hand side of FIG. 1 has been produced with 5000-fold magnification. In both images, scaly structures are clearly apparent, which have quite sharp edges in their transitions from one scale to the next.

[0313] FIG. 2 shows a hair from a hair tress as treated according to example C2-1 in the form of a scanning electron micrograph in secondary electron contrast at an acceleration voltage of 5 kV. The FEI Magellan400 scanning electron microscope was used in two different magnification settings. The illustration in FIG. 2 on the left-hand side has been produced with 500-fold magnification and the illustration on the right-hand side of FIG. 2 has been produced with 5000-fold magnification. It is clearly apparent that the scaly structure of the hair, as shown in FIG. 1, is surrounded by a closed film of the composition of the invention in the form of product A. The film has the effect here that it significantly attenuates and softens the sharp edges of the individual scales, as can be seen in the right-hand illustration in FIG. 2. The film lies like a cloth over the hair structure and even forms wrinkles there, as is clearly apparent in the right-hand illustration of FIG. 2.