Invention Grant
US08445623B2 Process for the preparation of polyisocyanates with a biuret structure
有权
制备具有缩二脲结构的多异氰酸酯的方法
- Patent Title: Process for the preparation of polyisocyanates with a biuret structure
- Patent Title (中): 制备具有缩二脲结构的多异氰酸酯的方法
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Application No.: US12861306Application Date: 2010-08-23
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Publication No.: US08445623B2Publication Date: 2013-05-21
- Inventor: Martin Brahm , Dieter Mager , André Fellhoelter , Reinhard Halpaap
- Applicant: Martin Brahm , Dieter Mager , André Fellhoelter , Reinhard Halpaap
- Applicant Address: DE Leverkusen
- Assignee: Bayer MaterialScience AG
- Current Assignee: Bayer MaterialScience AG
- Current Assignee Address: DE Leverkusen
- Agency: Novak Druce Connolly Bove + Quigg LLP
- Priority: DE102009038463 20090821
- Main IPC: C08G18/32
- IPC: C08G18/32
Abstract:
The present invention relates to an improved process for the preparation of polyisocyanates with a biuret structure by continuous reaction of excess amounts of organic diisocyanates having exclusively aliphatically and/or cycloaliphatically bonded isocyanate groups with organic diamines having exclusively aliphatically and/or cycloaliphatically bonded primary amino groups at elevated temperatures by 2-stage addition of the isocyanate component.
Public/Granted literature
- US20110046300A1 PROCESS FOR THE PREPARATION OF POLYISOCYANATES WITH A BIURET STRUCTURE Public/Granted day:2011-02-24
Information query
