Olivier Braun,Paul Mallo,Audrey Bonnardel,Francois Guy
申请号：
US12746817
公开号：
US08668915B2
申请日:
2008.12.05
申请国别(地区):
US
年份:
2014
代理人:
摘要：
Process for the preparation of a an inverse latex including from 20% to 70% by weight and preferably from 25% to 50% by weight of a branched or crosslinked polyelectrolyte, characterized in that the polyelectrolyte is a copolymer of 2-acrylamido-2-methylpropanesulfonic acid partially or totally salified with acrylamide and optionally one or more monomers chosen from monomers containing a partially or totally salified weak acid function and/or from neutral monomers other than acrylamide, the production process including the control of the pH in the initial aqueous phase； Cosmetic, dermopharmaceutical or pharmaceutical composition including the inverse latex directly obtained by the process.
