Patent · US Expired

Polyamino acid derivatives and use thereof in compositions for treating keratin fibers

US7316815B2 · kind B2 · utility

14Cited by
18References
30Claims
0Family size

Assignee

Inventors

Key dates

Filing dateOct 10, 2003
Grant dateJan 8, 2008
Priority date—
Expiry dateMar 1, 2025

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 (I) in which X is —O—, —S— or —NR3; R1 represents in particular a hydrogen atom or a C1-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

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.