发明公开
- 专利标题： HIGH-MOLECULAR-WEIGHT POLYDIOXOLANE AND PROCESS FOR PRODUCING THE SAME
- 专利标题（中）： 高分子量聚二氧戊环及其制备方法
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申请号： EP94921816.8申请日： 1994-07-26
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公开(公告)号： EP0675146A1公开(公告)日： 1995-10-04
- 发明人: NAMBA, Takashi , KOBAYASHI, Hiroya , MINAMI, Kenji , ITOH, Hiroshi , KURIYAMA, Toshiaki , YUKITAKE, Masashi
- 申请人： NIPPON SHOKUBAI CO., LTD.
- 申请人地址： 1-1, Koraibashi, 4-chome Chuo-ku, Osaka-shi, Osaka-fu 541 JP
- 专利权人： NIPPON SHOKUBAI CO., LTD.
- 当前专利权人： NIPPON SHOKUBAI CO., LTD.
- 当前专利权人地址： 1-1, Koraibashi, 4-chome Chuo-ku, Osaka-shi, Osaka-fu 541 JP
- 代理机构： Ouzman, Beverley Nicola Claire
- 优先权： JP188039/93 19930729; JP188040/93 19930729; JP53612/94 19940324; JP53613/94 19940324; JP163907/94 19940715
- 国际公布： WO9504099 19950209
- 主分类号： C08G65/08
- IPC分类号： C08G65/08 ; C08G2/18 ; C08G65/16 ; C08G65/30 ; C08G65/10
摘要：
A process for producing a high-molecular-weight polydioxolane which comprises the steps of polymerizing 1,3-dioxolane in the presence of a polymerization catalyst containing a heteropolyacid and neutralizing the obtained reaction product with an organic amine and/or ammonia. A hydrophilic film which contains the polydioxolane, is made from a resin having a specified molecular weight, and has specified crystallinity and spherulite size. A cold-water-degradable film contains the polydioxolane and is produced by forming a resin having specified molecular weight into film under specified molding conditions or by giving a specified thermal history to the film of this polymer.
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