Invention Grant
- Patent Title: Preparation of polyisocyanates of the trimer type
- Patent Title (中): 三聚体多异氰酸酯的制备
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Application No.: US12402855Application Date: 2009-03-12
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Publication No.: US08097691B2Publication Date: 2012-01-17
- Inventor: Frank Richter , Reinhard Halpaap
- Applicant: Frank Richter , Reinhard Halpaap
- Applicant Address: DE Leverkusen
- Assignee: Bayer MaterialScience AG
- Current Assignee: Bayer MaterialScience AG
- Current Assignee Address: DE Leverkusen
- Agency: Connolly Bove Lodge & Hutz LLP
- Priority: EP08004769 20080314
- Main IPC: C08G18/16
- IPC: C08G18/16
Abstract:
The invention relates to the use of heterocycles containing trivalent phosphorus as a ring member as catalysts for isocyanate modification and to a process for preparing polyisocyanates of the trimer type.
Public/Granted literature
- US20090234091A1 PREPARATION OF POLYISOCYANATES OF THE TRIMER TYPE Public/Granted day:2009-09-17
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