| 摘要 |
New carboxydithiols and their organic and mineral salts and aqueous reducing compositions for the permanent deformation of the hair comprising them. The carboxydithiols comprised in the composition are of formula (I); A, B : (CH 2) n, CH(CH 3); n : 1-4; R : OR 1, NR 2R 3, NH-E-COR 4, radicals of formulae (i), (ii) and (iii); R 1H, 1-5C alkyl optionally substituted with 1 or 2 OH; R 2, R 3H, 1-5C alkyl optionally substituted with 1 or 2 of hydroxyl or methylamino or ethylamino or dimethylamino; E : - (CH 2) p, -CH(R 5); p : 1-3; R 51-5C alkyl optionally substituted with hydroxyl or amino or guanidino or methylthio or CONH 2; R 4hydroxyl , OR 6, NR 7R 8; R 6R 1; R 7, R 8R 2; R 9R 4; R' : H, methyl, ethyl; Claimed carboxydithiols are of formula (II); A' : A; B' : B; R"' : R'; R" : OR' 1, NR' 2R' 3; R' 1H, 1-5C alkyl optionally substituted with 1 or 2 OH; R' 2, R' 3H, 1-5C alkyl optionally substituted with 1 or 2 of hydroxyl or methylamino or ethylamino or dimethylamino except where A' and B' are CH 2and R' 1is methyl or ethyl. Independent claims are included for: (1) a method of permanently deforming the hair comprising a step of applying the claimed composition to reduce the disulfide bonds of the keratin and a step of fixation by oxidation to reform the bonds by application of an oxidizing composition or by contacting the hair with oxygen in the air; and (2) a kit for the permanent deformation of the hair comprising the claimed reducing composition in one compartment and an oxidizing composition in another. [Image] [Image] [Image]. |
