Invention Grant
- Patent Title: Preparation of uretdione polyisocyanates
- Patent Title (中): 脲二酮多异氰酸酯的制备
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Application No.: US12315286Application Date: 2008-12-02
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Publication No.: US08134014B2Publication Date: 2012-03-13
- Inventor: Frank Richter , Andreas Hecking , Reinhard Halpaap
- Applicant: Frank Richter , Andreas Hecking , Reinhard Halpaap
- Applicant Address: DE Leverkusen
- Assignee: Bayer MaterialScience AG
- Current Assignee: Bayer MaterialScience AG
- Current Assignee Address: DE Leverkusen
- Agent Robert S. Klemz; Noland J. Cheung
- Priority: DE102007058487 20071204
- Main IPC: C07D205/00
- IPC: C07D205/00 ; C08G18/81
Abstract:
The invention relates to the use of specific pyridines as catalysts for the dimerization of isocyanates (uretdione formation) and a process for preparing polyisocyanates having a high content of uretdione groups.
Public/Granted literature
- US20090143558A1 Preparation of uretdione polyisocyanates Public/Granted day:2009-06-04
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