发明名称 |
Process for trimerising cycloaliphatic diisocyanates |
摘要 |
The invention relates to a process for preparing polyisocyanates containing isocyanurate groups by trimerising cycloaliphatic diisocyanates using a catalyst solution comprising at least one quaternary ammonium hydroxide, characterized in that the catalyst solution is metered in such that the reaction temperature is >90° C. and ≦140° C. |
申请公布号 |
US9376403(B2) |
申请公布日期 |
2016.06.28 |
申请号 |
US201313971018 |
申请日期 |
2013.08.20 |
申请人 |
Covestro Deutschland AG |
发明人 |
Halpaap Reinhard;Schneider Mario;Wilmes Oswald;Werner Uwe |
分类号 |
C07D251/34;C08G18/75;C08G18/02;C08G18/09;C08G18/18 |
主分类号 |
C07D251/34 |
代理机构 |
Drinker Biddle & Reath LLP |
代理人 |
Drinker Biddle & Reath LLP |
主权项 |
1. A process for preparing a cycloaliphatic polyisocyanate containing isocyanurate groups comprising trimerizing a cycloaliphatic diisocyanate in the presence of a catalyst solution comprising at least one quaternary ammonium hydroxide in a reaction solution, wherein the catalyst solution is metered in to said reaction solution such that a reaction temperature greater than 90° C. and less than or equal to 140° C. is maintained. |
地址 |
Leverkusen DE |