Polyamino acid derivatives and use thereof in compositions...

Details Polyamino acid derivatives and use thereof in compositions... Polyamino acid derivatives and use thereof in compositions...

2008-01-08

2008-01-08

Padmanabhan, Sreeni (Department: 1617)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Cosmetic, antiperspirant, dentifrice

C424S070170, C424S078020, C514S506000, C514S626000, C514S881000, C514S937000, C514S944000, C514S945000

Reexamination Certificate

active

07316815

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; R1represents in particular a hydrogen atom or a C1-C40alkyl radical; R2represents in particular a hydrogen atom or an optionally substituted alkyl radical; R3represents a hydrogen atom or an alkyl radical; R4represents 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

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