Method and agents on the basis of 2-mercaptopropionic acid amides for durable hair forming and a method for producing same
View Patent ↗The preparation for permanently deforming hair has a pH of 6.5 to 9.5 and contains, as keratin-reducing agent, a 2-mercaptopropion-amide of the formula (I): in which R 1 and R 2 , independently of one another, represent H, a linear or branched alkylaminoalkyl group with 2 to 8 carbon atoms, or a morpholinoalkyl group with 2 to 3 carbon atoms in the alkyl portion of the morpholinoalkyl group, with the proviso that R 1 and R 2 are not simultaneously H, or that R 1 and R 2 , together with the nitrogen atom, form a five-or six-membered heterocyclic ring, which optionally contain an additional N or O and are optionally substituted with one or two OH and/or methyl groups.
1. A preparation for permanently deforming hair having a pH of 6.5 to 9.5 and containing, as keratin-reducing agent, a 2-mercapto-propionamide of the formula (I):
in which R 1 and R2, independently of one another, represent H, a linear or branched alkylaminoalkyl group with 2 to 8 carbon atoms, or a morpholinoalkyl group with 2 to 3 carbon atoms in the alkyl portion of the morpholinoalkyl group, or in which R 1 and R2, together with the nitrogen atom, form a five- or six-membered heterocyclic ring, which optionally contain an additional N or 0 and are optionally substituted with one or two OH and/or methyl groups with the proviso that R1 and R2 are not simultaneously H.
2. The preparation as defined in claim 1 , containing from 3 to 28% by weight of the 2-mercaptopropionamide of formula (I).
3. The preparation as defined in claim 1 , obtained by mixing two or three components.
4. A method for permanently deforming hair, wherein the hair, before and/or after the hair is held in a desired shape, is treated with a deforming preparation, rinsed with water, then treated oxidatively, rinsed once again with water, optionally laid into a water wave and then dried, wherein said deforming preparation has a pH of 6.5 to 9.5 and contains, as keratin-reducing agent, a 2-mercaptopropionamide of the formula (I):
in which R 1 and R2, independently of one another, represent H, a linear or branched alkylaminoalkyl group with 2 to 8 carbon atoms, or a morpholinoalkyl group with 2 to 3 carbon atoms in the alkyl portion of the morpholinoalkyl group, or in which R 1 and R2, together with the nitrogen atom, form a five- or six-membered heterocyclic ring, which optionally contain an additional N or 0 and are optionally substituted with one or two OH and/or methyl groups with the proviso that R1 and R2 are not simultaneously H.
5. The method as defined in claim 4 , wherein the deforming preparation is allowed to act on the hair for 10 to 30 minutes without heating the hair.
6. The method as defined in claim 4 , wherein the deforming preparation is allowed to act on the hair for 5 to 20 minutes with heating the hair.
7. The method as defined in claim 4 , wherein the hair is treated with from 60 to 120 gram of the deforming preparation.
8. A 2-mercaptopropionamide of the formula (I):
in which R 1 and R2, independently of one another, represent H, a linear or branched alkylaminoalkyl group with 2 to 8 carbon atoms, or a morpholinoalkyl group with 2 to 3 carbon atoms in the alkyl portion of the morpholinoalkyl group, or in which R 1 and R2, together with the nitrogen atom, form a five- or six-membered heterocyclic ring, which optionally contain an additional N or 0 and are optionally substituted with one or two OH and/or methyl groups with the proviso that R1 and R2 are not simultaneously H.