发明授权
- 专利标题： Preparation process of heat-resistant polymers from polycarboxcylic acids and anhydrides in the presence of an alkali metal fluoride
- 专利标题（中）： 在碱金属氟化物存在下，由聚羧酸和酸酐制备耐热聚合物
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申请号： US943699申请日： 1986-12-19
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公开(公告)号： US4736008A公开(公告)日： 1988-04-05
- 发明人: Masahiro Kouno , Akihiro Yamaguchi , Masanori Osawa , Kohei Shizuka , Hiromi Nakano , Kazumi Mizutani
- 申请人： Masahiro Kouno , Akihiro Yamaguchi , Masanori Osawa , Kohei Shizuka , Hiromi Nakano , Kazumi Mizutani
- 申请人地址： JPX Tokyo
- 专利权人： Mitsui Toatsu Chemicals, Incorporated
- 当前专利权人： Mitsui Toatsu Chemicals, Incorporated
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX60-293592 19851228; JPX60-293593 19851228
- 主分类号： C08G18/72
- IPC分类号： C08G18/72 ; C08G18/16 ; C08G18/18 ; C08G18/22 ; C08G18/34 ; C08J9/00 ; C08G18/08
摘要：
Disclosed herein is a process for preparing heat-resistant polymers by reacting an organic polyisocyanate with one or more compounds selected from the group consisting of organic polycarboxylic acids and organic polycarboxylic acid anhydrides in the presence of an alkali metal fluoride or an alkali metal fluoride combined with a quaternary onium salt as a catalyst.
公开/授权文献
- US4195847A Cleaning device for phonograph records 公开/授权日：1980-04-01
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