PHOSPHONOMETHYLATED CHITOSANS, METHOD OF PREPARATION AND USE THEREOF Russian patent published in 2000 - IPC

Abstract RU 2158741 C2

FIELD: pharmaceutical industry. SUBSTANCE: described is phosphonomethylated chitosan containing units of formula I: wherein R₁ is hydrogen or radical of formula Ia, R₂ is radical of formula Ia; X₁ and X₂ are each independently hydrogen, C₁-C₅- alkyl or alkali metal ion or ammonium ion and n is 50-4000. Compounds have various uses as sequestering complexing agents and moisteners in cosmetic compositions. Also described is method of preparation and use of above-indicated compounds. EFFECT: improved properties of the title compounds. 7 cl, 3 ex

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RU 2 158 741 C2

Authors

Kun Martin

Maer Tomas

Stelin Al'Bert

Dates

2000-11-10—Published

1995-11-22—Filed