Invention Grant
US07709680B2 Preparation of polyisocyanates containing uretdione groups using phosphine catalysts
有权
使用磷化氢催化剂制备含有脲二酮基团的多异氰酸酯
- Patent Title: Preparation of polyisocyanates containing uretdione groups using phosphine catalysts
- Patent Title (中): 使用磷化氢催化剂制备含有脲二酮基团的多异氰酸酯
-
Application No.: US12082803Application Date: 2008-04-14
-
Publication No.: US07709680B2Publication Date: 2010-05-04
- 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
- Agent Robert S. Klemz; Noland J. Cheung
- Priority: DE102007018015 20070417
- Main IPC: C07C249/00
- IPC: C07C249/00 ; C08G18/10
Abstract:
The invention provides a process for isocyanate dimerization (uretdione formation) and a process for preparing polyisocyanates having a high content of uretdione groups, using specific phosphines as catalysts. The phosphines have one or two tertiary alkyl radicals bound directly to phosphorus.
Public/Granted literature
- US20080262262A1 Preparation of polyisocyanates containing uretdione groups using phosphine catalysts Public/Granted day:2008-10-23
Information query
