N-(mercaptoalkyl)omega-hydroxyalkylamides and their use as a reducing agent in a process for permanently deforming hair
US4956175A · kind A · utility
25Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1989 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | Aug 2, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C323/41
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An N-(mercaptoalkyl).omega.-hydroxyalkylamide having the formula, ##STR1## wherein n is 2 or 3 and m is 2 to 5 inclusive is employed as a reducing agent in the first stage reducing operation of permanently deforming hair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.