Invention Grant
- Patent Title: Process for trimerising cycloaliphatic diisocyanates
- Patent Title (中): 脂环族二异氰酸酯三聚体的方法
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Application No.: US13971018Application Date: 2013-08-20
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Publication No.: US09376403B2Publication Date: 2016-06-28
- Inventor: Reinhard Halpaap , Mario Schneider , Oswald Wilmes , Uwe Werner
- Applicant: Bayer MaterialScience AG
- Applicant Address: DE Leverkusen
- Assignee: Covestro Deutschland AG
- Current Assignee: Covestro Deutschland AG
- Current Assignee Address: DE Leverkusen
- Agency: Drinker Biddle & Reath LLP
- Priority: EP12181517 20120823
- Main IPC: C07D251/34
- IPC: C07D251/34 ; C08G18/75 ; C08G18/02 ; C08G18/09 ; C08G18/18
Abstract:
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.
Public/Granted literature
- US20140058102A1 PROCESS FOR TRIMERISING CYCLOALIPHATIC DIISOCYANATES Public/Granted day:2014-02-27
Information query
