发明授权
US08668915B2 Process for the preparation of inverse latex of acrylamide-based polymers and composition comprising said latex
有权
用于制备丙烯酰胺类聚合物的反胶乳的方法和包含所述胶乳的组合物
- 专利标题： Process for the preparation of inverse latex of acrylamide-based polymers and composition comprising said latex
- 专利标题（中）： 用于制备丙烯酰胺类聚合物的反胶乳的方法和包含所述胶乳的组合物
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申请号： US12746817申请日： 2008-12-05
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公开(公告)号： US08668915B2公开(公告)日： 2014-03-11
- 发明人: Olivier Braun , Paul Mallo , Audrey Bonnardel , Francois Guy
- 申请人： Olivier Braun , Paul Mallo , Audrey Bonnardel , Francois Guy
- 申请人地址： FR Paris GB Wellingborough
- 专利权人： Societe d'Exploitation de Produits pour les Industries Chimiques SEPPIC,Scott Bader Company Limited
- 当前专利权人： Societe d'Exploitation de Produits pour les Industries Chimiques SEPPIC,Scott Bader Company Limited
- 当前专利权人地址： FR Paris GB Wellingborough
- 代理机构： Young & Thompson
- 优先权： EP07301660 20071211
- 国际申请： PCT/EP2008/066863 WO 20081205
- 国际公布： WO2009/074513 WO 20090618
- 主分类号： A61K8/00
- IPC分类号： A61K8/00 ; A61K8/18 ; A61Q17/04 ; C08L33/06 ; C09B67/00
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.
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