公开(公告)号：US4604450A

公开(公告)日：1986-08-05

申请号：US766221

申请日：1985-08-16

申请人： Shenghong A. Dai ,  Steven J. Grossman ,  Kemal Onder

发明人： Shenghong A. Dai ,  Steven J. Grossman ,  Kemal Onder

IPC分类号： C08G69/14 ,  C08G69/16 ,  C08G73/10 ,  C08G73/14 ,  C08G69/00

CPC分类号： C08G69/14 ,  C08G69/16 ,  C08G73/10 ,  C08G73/14

摘要： Novel polyamide block copolymers are provided which comprise a central block of a soft segment derived from the residue of a polymeric polyol or polyamine joined to terminal hard segment polyamide blocks. The linkages which join the blocks are of a novel type and are the opened form of certain bis azetidine-2,4-dione rings.The block copolymers can be prepared very rapidly via anionically polymerizing lactams on to prepolymer soft segments containing terminal azetidine-2,4-dione rings.The speed with which the polymerizations can be carried out make the block copolymers particularly useful for the RIM preparation of molded parts.

摘要翻译： 提供了新的聚酰胺嵌段共聚物，其包含衍生自聚合多元醇的残基或连接到末端硬链段聚酰胺嵌段的多胺的软链段的中心嵌段。 连接嵌段的键是新型的，是某些双氮杂环丁烷-2,4-二酮环的开放形式。 嵌段共聚物可以通过将内酰胺阴离子聚合到含有末端氮杂环丁烷-2,4-二酮环的预聚物软链段上而非常快速地制备。 可以进行聚合的速度使得嵌段共聚物特别可用于模塑部件的RIM制备。