发明授权
EP1521795B1 POLYMERES THERMOSENSIBLES ET GELS THERMOREVERSIBLES OBTENUS A PARTIR DE CES POLYMERES
有权
HITZEMPFINDLICHE聚合物和热可逆凝胶THEREOF
- 专利标题： POLYMERES THERMOSENSIBLES ET GELS THERMOREVERSIBLES OBTENUS A PARTIR DE CES POLYMERES
- 专利标题（英）： Heat-sensitive polymers and heat reversible gels derived therefrom
- 专利标题（中）： HITZEMPFINDLICHE聚合物和热可逆凝胶THEREOF
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申请号： EP03760030.1申请日： 2003-06-13
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公开(公告)号： EP1521795B1公开(公告)日： 2012-03-14
- 发明人: PAGNOUX, Anne , DOLATKHANI, Marc , CHAFFAUX, Patricia
- 申请人： Polymerexpert SA
- 申请人地址： 1 allée du Doyen Georges Brus 33600 Pessac FR
- 专利权人： Polymerexpert SA
- 当前专利权人： Polymerexpert SA
- 当前专利权人地址： 1 allée du Doyen Georges Brus 33600 Pessac FR
- 代理机构： Ulmann, Catherine Claire
- 优先权： FR0207463 20020614
- 国际公布： WO2003106536 20031224
- 主分类号： C08G65/333
- IPC分类号： C08G65/333 ; C08G18/28 ; C08G18/80 ; C08G18/48
摘要：
The invention concerns water-soluble heat-sensitive polymers comprising both chain formations including at least one heat-sensitive three-block polyoxyalkylene linear chain consisting of polyethylene oxide (POE) blocks and polypropylene oxide (PPO) blocks, said chain being in the form POE-PPO-PPO-POE and being extended to at least one of its ends by an organic group via a carbamate bond and chain formations including at least a three-block polyoxyalkylene POE-PPO-POE linear chain extended to at least one of its ends by an organic group via a urea bond. The invention also concerns heat-reversible physical gels with high viscosification index, containing said polymers and their uses. The invention further concerns preparation of said polymers and said gels.
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