Elisabeth Laugier;Franck Gouchet;Jean-Pierre Perraud
发明人:
Elisabeth Laugier,Franck Gouchet,Jean-Pierre Perraud
申请号：
US12668047
公开号：
US08236781B2
申请日:
2008.07.01
申请国别(地区):
US
年份:
2012
代理人:
摘要：
The present invention relates to a hydrogel of chitosan carboxyalkylamide, characterised in that it has a pH value close to that of the skin, comprised between 6.5 and 7.2, and in that the chitosan carboxy-alkylamide is constituted by 40 to 90 mole % of D-glucosamine N-carboxyalkylamide units of formula (I)where n represents an integer ranging from 1 to 8, from 60 to 10 mole % of protonated D-glucosamine units, and from 5 to 15 mole % of N-acetyl-D-glucosamine units.The present invention also relates to a dehydration product of such a gel and the cosmetic and/or dermatological utilisation of the gel and the dehydration product.
