发明公开
- 专利标题： PROCESS FOR PRODUCING POLYHYDROXYALKANOATE CRYSTAL
- 专利标题（中）： 生产聚羟基烷酸酯晶体的方法
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申请号： EP04818971.6申请日： 2004-11-19
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公开(公告)号： EP1688450A1公开(公告)日： 2006-08-09
- 发明人: KINOSHITA, Koichi , OSAKADA, Fumio , UEDA, Yasuyoshi , NARASIMHAN, Karunakaran , CEARLEY, Angella, Christine , YEE, Kenneth , NODA, Isao
- 申请人： KANEKA CORPORATION , THE PROCTER & GAMBLE COMPANY
- 申请人地址： 2-4, Nakanoshima 3-chome Kita-ku Osaka-shi, Osaka 530-8288 JP
- 专利权人： KANEKA CORPORATION,THE PROCTER & GAMBLE COMPANY
- 当前专利权人： KANEKA CORPORATION,THE PROCTER & GAMBLE COMPANY
- 当前专利权人地址： 2-4, Nakanoshima 3-chome Kita-ku Osaka-shi, Osaka 530-8288 JP
- 代理机构： Behnisch, Werner
- 优先权： JP2003392467 20031121
- 国际公布： WO2005049691 20050602
- 主分类号： C08G63/88
- IPC分类号： C08G63/88
摘要：
The present invention provides a method for conveniently obtaining a biodegradable polyhydroxyalkanoate by a solvent extraction method.
A method for producing a polyhydroxyalkanoate crystal which comprises precipitating a polyhydroxyalkanoate crystal using a monohydric alcohol having 4 to 10 carbon atoms as a extraction solvent, keeping a polyhydroxyalkanoate solution containing 0.1 to 10% by weight of water relative to the total amount of the solution warm at 70°C or higher, and cooling the solution to below 70°C.
A method for producing a polyhydroxyalkanoate crystal which comprises precipitating a polyhydroxyalkanoate crystal using a monohydric alcohol having 4 to 10 carbon atoms as a extraction solvent, keeping a polyhydroxyalkanoate solution containing 0.1 to 10% by weight of water relative to the total amount of the solution warm at 70°C or higher, and cooling the solution to below 70°C.
公开/授权文献
- EP1688450B2 PROCESS FOR PRODUCING POLYHYDROXYALKANOATE CRYSTAL 公开/授权日：2012-08-01
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