Cosmetics containing a chitosan derivative having an alkyl-hydroxypropyl substituent as a main component, a novel chitosan derivative and a method for producing the same

摘要

PCT No. PCT/EP86/00041 Sec. 371 Date Oct. 3, 1986 Sec. 102(e) Date Oct. 3, 1986 PCT Filed Jan. 30, 1985 PCT Pub. No. WO86/04590 PCT Pub. Date Aug. 14, 1986.New alkyl-hydroxypropyl-chitosans of the formula I HO[C6H11-m-qNO4(R1)m(R2)n(R3)q]pH (I) (m=0-0.6; n=0.5-10; q=0.5-4; p=50-5000; R1=acetyl; IMAGE R3=C1-C6-alkyl) and their salts with organic or inorganic acids. The invention is directed, in addition, to a process for producing the chitosan derivatives of the formula I, as well as cosmetic compositions for the treatment of hair or skin, particularly compositions for strengthening hair, comprising a content of these chitosan derivatives. The described alkyl-hydroxypropyl-chitosans are distinguished by their favorable solubility in organic solvents. Therefore, they can also be used, for example, in anhydrous hairsprays.