Poly-aminoacid derivatives and their use in compositions for treating keratinous fibres
US6656458B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2000 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Dec 14, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention concerns the use in a cosmetic composition of at least a poly-aminoacid of general formula (1) in which X is —O—, —S— or —NR3; R1 represents in particular a hydrogen atom or a C114 C40 alkyl radical; R2 represents in particular a hydrogen atom or an optionally substituted alkyl radical; R3 represents a hydrogen atom or an alkyl radical; R4 represents a hydrogen atom or a radical such as NH2, OH, SH, —CHOHCH3, —CONH2; n is a number greater than 1 such that the poly-aminoacid derivative molecular weight ranges between 200 and 200000. The invention also concerns the use of said derivatives for keratinous fibre strengthening and care. (I)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.