Cosmetic preparations based on N-hydroxypropyl chitosans, N-hydroxypropyl chitosans, and process for preparing them

摘要

the invention relates to cosmetic products for the treatment of skin or hair, with a content of new n - hydroxypropyl - chitosanderivaten consisting of(a) 4 to 40 molprozent units of the formula ib) 60 to 96 molprozent units of formula ii.wherein r and r2 is equal or different and hydrogen or the groupwith n is a whole number from 1 to 5, the mean under the condition that at least 50 percent of the units of ii r and r2 simultaneously hydrogen or their salts are characterized. she is still new n - hydroxypropyl - chitosanderivate and their salts, and a process for the production of these new compounds from propylene oxide and chitosan.