-
1.
公开(公告)号:EP0675146A1
公开(公告)日:1995-10-04
申请号:EP94921816.8
申请日:1994-07-26
发明人: NAMBA, Takashi , KOBAYASHI, Hiroya , MINAMI, Kenji , ITOH, Hiroshi , KURIYAMA, Toshiaki , YUKITAKE, Masashi
CPC分类号: C08G65/2666 , C08G4/00 , C08G65/12 , C08G65/16 , C08G65/30 , C09D171/00
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.
摘要翻译: 一种生产高分子量聚二氧杂环戊烷的方法,该方法包括在含有杂多酸的聚合催化剂存在下聚合1,3-二氧戊环并用有机胺和/或氨中和得到的反应产物的步骤。 含有聚二氧杂环戊烷的亲水膜由具有特定分子量的树脂制成,并具有特定的结晶度和球晶尺寸。 冷水可降解膜包含聚二氧杂环戊烷并且通过在特定模制条件下将具有特定分子量的树脂形成膜来制备,或者通过给予该聚合物膜特定的热过程来生产。
-
2.
公开(公告)号:EP0675146B1
公开(公告)日:2000-05-31
申请号:EP94921816.8
申请日:1994-07-26
发明人: NAMBA, Takashi , KOBAYASHI, Hiroya , MINAMI, Kenji , ITOH, Hiroshi , KURIYAMA, Toshiaki , YUKITAKE, Masashi
CPC分类号: C08G65/2666 , C08G4/00 , C08G65/12 , C08G65/16 , C08G65/30 , C09D171/00
-