Invention Grant
- Patent Title: Process for the preparation of monomers for polybenzimidazole materials
- Patent Title (中): 制备聚苯并咪唑物质单体的方法
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Application No.: US12634799Application Date: 2010-02-22
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Publication No.: US08163961B2Publication Date: 2012-04-24
- Inventor: Rajiv Dhawan , Joachim C. Ritter
- Applicant: Rajiv Dhawan , Joachim C. Ritter
- Applicant Address: US DE Wilmington
- Assignee: E. I. du Pont de Nemours and Company
- Current Assignee: E. I. du Pont de Nemours and Company
- Current Assignee Address: US DE Wilmington
- Main IPC: C07C211/00
- IPC: C07C211/00
Abstract:
Complexes of 2,3,5,6-tetraaminotoluene with an aromatic diacid are prepared by reaction with a divalent salt of the aromatic diacid while maintaining the pH of the reaction solution between 3 and 10. The resulting complexes are suitable for making high molecular weight polybenzimidazole polymers for high-performance fibers.
Public/Granted literature
- US20100160676A1 PROCESS FOR THE PREPARATION OF MONOMERS FOR POLYBENZIMIDAZOLE MATERIALS Public/Granted day:2010-06-24
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