发明名称 |
HIGH-MOLECULAR-WEIGHT POLYDIOXOLANE AND PROCESS FOR PRODUCING THE SAME. |
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. <IMAGE> |
申请公布号 |
EP0675146(A4) |
申请公布日期 |
1995.12.27 |
申请号 |
EP19940921816 |
申请日期 |
1994.07.26 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
NAMBA, TAKASHI;KOBAYASHI, HIROYA;MINAMI, KENJI;ITOH, HIROSHI;KURIYAMA, TOSHIAKI;YUKITAKE, MASASHI |
分类号 |
C08G4/00;C08G65/12;C08G65/16;C08G65/26;C08G65/30;C09D171/00 |
主分类号 |
C08G4/00 |
代理机构 |
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