Cosmetic compositions based on quaternary chitosan derivatives, quaternary hydroxypropyl-substituted chitosan derivatives and process for preparing them

摘要

Cosmetic compositions are disclosed for the treatment of hair or skin, characterized by a content of new quaternary chitosan derivatives of the formula HO[C6H11-mNO4(R1)m(R2)n(R3)q]pH(1) (m=0-0.5; n=0.01-6; q=0.005-3; p=10-50,000 IMAGE IMAGE R4 = C1-C4alkyl; X = Cl, Br, I or CH3SO4) Also disclosed are the new quaternary chitosan derivatives per se as well as processes for their preparation. The chitosan derivatives have a good substantivity, particularly to hair keratin, and prove to have hair strengthening and hair conditioning characteristics.