Method for simultaneously dyeing and permanent shaping of hair

1. A method for simultaneously dyeing and permanent shaping of hair, said method comprising the steps of:

a) immediately prior to application on the hair, mixing a hair shaping component (A) containing from 6 to 15 percent by weight of a keratin-reducing substance with a dye component (B) to form a dyeing and shaping composition;

b) treating the hair with the dyeing and shaping composition;

c) then allowing the dyeing and shaping composition to act on the hair for an acting time sufficient for the permanent shaping of the hair amounting to from 3 to 30 minutes;

d) after the allowing of step c), applying to the hair an intervening acidic rinse having a pH of 2 to 6;

e) after the applying of the acidic rinse of step d), treating the hair with a fixing composition;

f) then allowing the fixing composition to act on the hair from 1 to 40 minutes; and subsequently

g) rinsing the hair;

wherein the dye component (B) contains at least one oxidative coupler compound and at least one oxidative dyestuff as oxidation dye precursor compounds, and said at least one oxidative dyestuff is selected from the group consisting of 4,5-diamino-1-(2-hydroxyethyl)-1 H-pyrazole, 4,5-diamino-1-(1-methylethyl)-1H-pyrazole, 4,5-diamino-1-[(4-methyl-phenyl)methyl]-1H-pyrazole, 4,5-diamino-1-[(4-chlorophenyl)methyl]-1H-pyrazole, 4,5-diamino-1-methylpyrazole, 2-amino-6-methylphenol, 2-amino-5-methyl phenol and p-aminophenol derivatives of formula (i):

 wherein R 1 represents H, —CH 3 , —CH 2 CH 3 , —CH 2 OH, —CH 2 CH 2 OH, —CH 2 NH 2 , —CH 2 NHCH 2 CH 2 OH or —CH 2 OCH 3 and R 2 and R 3 , independently of each other, each represent H, —CH 3 , —CH 2 CH 3 , —CH 2 OH, —CH 2 CH 2 OH or —CH 2 CH 2 CH 2 OH, with the proviso that at least one of said R 1 , R 2 and R 3 is not H.

2. A method for simultaneously dyeing and permanent shaping of hair, said method comprising the steps of:

a) immediately prior to application on the hair, mixing a hair shaping component (A) containing from 6 to 15 percent by weight of a keratin-reducing substance with a dye component (B) to form a dyeing and shaping composition;

b) treating the hair with the dyeing and shaping composition;

c) then allowing the dyeing and shaping composition to act on the hair for an acting time sufficient for the permanent shaping of the hair amount to from 3 to 30 minutes;

d) after the allowing of step c), applying a pre-fixing composition to the hair;

e) after the applying of the pre-fixing composition of step d), treating the hair with a fixing composition;

f) then allowing the fixing composition to act on the hair from 1 to 40 minutes; and subsequently

g) rinsing the hair;

wherein the dye component (B) contains at least one oxidative coupler compound and at least one oxidative dyestuff as oxidation dye precursor compounds, and said at least one oxidative dyestuff is selected from the group consisting of 4,5-diamino-1-(2-hydroxyethyl)-1H-pyrazole, 4,5-diamino-1-(1-methylethyl)-1H-pyrazole, 4,5-diamino-1-[(4-methylphenyl)methyl]-1H-pyrazole, 4,5diamino-1-[(4-chlorophenyl)methyl]-1H-pyrazole, 4,5-diamino-1-methylpyrazole, 2-amino-6-methylphenol, 2-amino-5-methyl phenol and p-aminophenol derivatives of formula (I):

 wherein R 1 represents H, —CH 3 , —CH 2 CH 3 , —CH 2 OH, —CH 2 CH 2 OH, —CH 2 NH 2 , —CH 2 NHCH 2 CH 2 OH or —CH 2 OCH 3 and R 2 and R 3 , independently of each other, each represent H, —CH 3 , —CH 2 CH 3 , —CH 2 OH, —CH 2 CH 2 OH or —CH 2 CH 2 CH 2 OH, with the proviso that at least one of said R 1 , R 2 and R 3 is not H.

3. The method as defined in claim 1 or 2 , wherein said at least one oxidative dyestuff is selected from the group consisting of 4,5-diamino-1-(2-hydroxyethyl)-1H-pyrazole, 4,5-diamino-1-(1-methylethyl)-1-H-pyrazole, 4,5-diamino-1-[(4-methylphenyl)methyl]-1H-pyrazole, 4,5-diamino-1-[(4-chlorophenyl)methyl]-1H-pyrazole, 4,5-diamino-1-methylpyrazole, 2-amino-6-methyl-phenol, 2-amino-5-methylphenol, 4-amino-3-methylphenol, 4-methyl-aminophenol, 4-amino-2-(aminomethyl)phenol, 4amino-2-[(2-hydroxyethyl)-amino]-methylphenol and 4-amino-2-(methyoxymethyl)phenol.

4. The method as defined in claim 1 or 2 , wherein said at least one oxidative coupler compound is selected from the group consisting of 1,3-diaminobenzene, 2-amino-4-[(2-hydroxyethyl)amino]-anisole, 2,4-diamino-1-fluoro-5-methyl-benzene, 2,4-diamino-1-methoxy-5-methylbenzene, 2,4-diamino-1-ethoxy-5-methylbenzene, 2,4-diamino-1-(2-hydroxyethoxy) -5-methylbenzene, 2,4-di[(2-hydroxyethyl)amino]-1,5-dimethoxybenzene, 2,4-diamino-1-(2-hydroxyethoxy)-benzene, 3-di[(2-hydroxyethyl)amino]aniline, 3-di[(2-aminoethyl)amino]aniline, 4-amino-1-ethoxy-2-di[(2-hydroxyethyl)amino]-benzene, 3-[(2-hydroxyethyl)-amino]aniline, 1,3-di(2,4-diaminophenoxy)propane, 2,4-dimethoxy-1,3-diamino-benzene, 2,6-bis(2-hydroxyethylaminotoluene, 3-dimethylaminophenol, 5-amino-2-methyl-phenol, 5-amino-4-fluoro-2-methylphenol, 5-amino-4-methoxy-2-methyl-phenol, 5-amino-4-ethoxy-2-methylphenol, 3-amino-2,4-dichlorophenol, 3-dimethylaminophenol, 3-amino-2-chloro-6-methylphenol, 3-aminophenol, 3-[(amidomethyl)-amino]phenol, 5-[(2-hydroxyethyl)amino]-2-methylphenol, 3-[(2-hydroxyethyl)-amino]phenol, 5-amino-2-ethylphenol, 5-[(3-hydroxypropyl)amino]-2-methylphenol, 3-[(2,3-dihydroxypropyl)amino]-2-methylphenol, 3-[(2-hydroxyethyl)-amino]-2-methylphenol, 5-amino-4-chloro-2-methylphenol, methylenedioxyphenol, resorcinol, methylresorcinol and 4-chlororesorcinol.

5. The method as defined in claim 1 or 2 , wherein said oxidation dye precursor compounds also include at least one dye member selected from the group consisting of 1,4-diaminobenzene, 1,4-diamino-2-methylbenzene, 1,4-diamino-2,6-dimethylbenzene, 1,4-diamino-2,5-dimethylbenzene, 1,4-diamino-2,3-dimethylbenzene, 1,4-diamino-2-chloro-benzene, 4-di[(2-hydroxyethyl)amino]-aniline, 4-[(2-methoxyethyl)amino]aniline, 1,4-diamino-2-(2-hydroxyethyl)-benzene, 1,3-bis[N-(2-hydroxyethyl)-N-(4-aminophenyl)]-amino-2-propanol and 2′,2-[1,2-ethandiyl-bis(oxy-2,1-ethandiyloxy)]bis-1,4-diaminobenzene.

6. The method as defined in claim 1 or 2 , wherein said dye component (B) contains from 0.5 to 30 percent by weight of said oxidation dye precursor compounds.

7. The method as defined in claim 1 or 2 , wherein said dyeing and shaping composition contains from 0.1 to 5 percent by weight of said oxidation dye precursor compounds.

8. The method as defined in claim 1 or 2 , wherein said dye component (B) and said hair shaping component (A) are mixed to form the dyeing and shaping composition in a weight ratio of 1:1 to 1:10.

9. The method as defined in claim 1 or 2 , wherein said keratin-reducing substance is a salt of sulfurous acid or a salt or a derivative of mercapto-carboxylic acid.

10. The method as defined in claim 1 or 2 , wherein said keratin-reducing substance is selected from the group consisting of thioglycolic acid, cysteine, thiolactic acid, salts of thioglycolic acid, salts of cysteine and salts of thiolactic acid.

11. The method as defined in claim 1 or 2 , wherein the fixing composition is a viscose preparation with a viscosity of 100 to 10,000 mPa·s at 25° C.

12. The method as defined in claim 1 or 2 , wherein the fixing composition is a viscose preparation with a viscosity of 300 to 1000 mPa·s at 25° C.

13. The method as defined in claim 1 or 2 , wherein the hair is treated with the fixing composition without rinsing the dyeing and shaping composition from the hair.