Invention Grant
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
- Patent Title: Process for the preparation of inverse latex of acrylamide-based polymers and composition comprising said latex
- Patent Title (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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Application No.: US12746817Application Date: 2008-12-05
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Publication No.: US08668915B2Publication Date: 2014-03-11
- Inventor: Olivier Braun , Paul Mallo , Audrey Bonnardel , Francois Guy
- Applicant: Olivier Braun , Paul Mallo , Audrey Bonnardel , Francois Guy
- Applicant Address: FR Paris GB Wellingborough
- Assignee: Societe d'Exploitation de Produits pour les Industries Chimiques SEPPIC,Scott Bader Company Limited
- Current Assignee: Societe d'Exploitation de Produits pour les Industries Chimiques SEPPIC,Scott Bader Company Limited
- Current Assignee Address: FR Paris GB Wellingborough
- Agency: Young & Thompson
- Priority: EP07301660 20071211
- International Application: PCT/EP2008/066863 WO 20081205
- International Announcement: WO2009/074513 WO 20090618
- Main IPC: A61K8/00
- IPC: A61K8/00 ; A61K8/18 ; A61Q17/04 ; C08L33/06 ; C09B67/00
Abstract:
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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