发明授权
US4324879A Process for the preparation of polyisocyanates containing isocyanurate
groups and the use thereof
失效
制备含有异氰脲酸酯基团的多异氰酸酯的方法及其用途
- 专利标题： Process for the preparation of polyisocyanates containing isocyanurate groups and the use thereof
- 专利标题（中）： 制备含有异氰脲酸酯基团的多异氰酸酯的方法及其用途
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申请号： US151005申请日： 1980-05-19
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公开(公告)号： US4324879A公开(公告)日： 1982-04-13
- 发明人: Manfred Bock , Josef Pedain , Walter Uerdingen
- 申请人： Manfred Bock , Josef Pedain , Walter Uerdingen
- 申请人地址： DEX Leverkusen
- 专利权人： Bayer Aktiengesellschaft
- 当前专利权人： Bayer Aktiengesellschaft
- 当前专利权人地址： DEX Leverkusen
- 优先权： DEX2839133 19780908
- 主分类号： C07D251/34
- IPC分类号： C07D251/34 ; C08G18/00 ; C08G18/79 ; C08G18/80 ; C08G18/20
摘要：
The present invention is concerned with an improved process for the production of partially trimerized hexamethylene diisocyanate which yields isocyanurate isocyanates which have low viscosity and low monomer contents by the use of a quaternary ammonium hydroxide catalyst which is hydroxyalkyl substituted at its N atom.
公开/授权文献
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