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Cosmetic compositions based on N-hydroxyethylchitosans, N-hydroxyethylchitosans and a process for their preparation
Cosmetic compositions based on N-hydroxyethylchitosans, N-hydroxyethylchitosans and a process for their preparation
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机译：基于N-羟乙基壳聚糖，N-羟乙基壳聚糖的化妆品组合物及其制备方法
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摘要
The invention relates to cosmetic compositions for treating the skin or the hair which are characterised by containing N-hydroxyethylchitosan derivatives consisting of a) 4 to 40 mol per cent of monomer units of the formula (I) IMAGE and b) 60 to 96 mol per cent of monomer units of the formula (II) IMAGE in which R1 and R2 are identical or different and are hydrogen or the group IMAGE with n equal to an integer from 1 to 5, with the condition that R1 and R2 are not both hydrogen in at least 50 per cent of the units of (II), or the salts thereof. It also relates to N-hydroxyethylchitosan derivatives and their salts and a process for preparing these compounds from ethylene oxide and chitosan.
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机译：本发明涉及用于治疗皮肤或毛发的化妆品组合物，其特征在于包含N-羟乙基壳聚糖衍生物，其由以下组成：a）4至40 mol％的式（I）的单体单元和b）60至96％式（II）的单体单元的摩尔百分比，其中R 1和R 2相同或不同，并且是氢或n等于1至5的整数的基团 R 1和R 2在其至少50％的（II）单元中都不都是氢，或者其盐。它还涉及N-羟乙基壳聚糖衍生物及其盐，以及由环氧乙烷和壳聚糖制备这些化合物的方法。
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