Invention Grant
- Patent Title: Process for forming an aramid copolymer
- Patent Title (中): 形成芳族聚酰胺共聚物的方法
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Application No.: US13559681Application Date: 2012-07-27
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Publication No.: US08822632B2Publication Date: 2014-09-02
- Inventor: Kiu-Seung Lee
- Applicant: Kiu-Seung Lee
- 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: C08G69/28
- IPC: C08G69/28
Abstract:
The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5 (6) amino benzimidazole (DAPBI), paraphenylene diamine, and terephthaloyl dichloride, the process comprising: (a) forming a solution of oligomers having chloride end groups from one mole of paraphenylene diamine and 1.3 to 5 moles of terephthaloyl dichloride a solvent system comprising an organic solvent and an inorganic salt; and (b) adding DAPBI and terephthaloyl dichloride to the solution of oligomers to form a polymer.
Public/Granted literature
- US20130197148A1 PROCESS FOR FORMING AN ARAMID COPOLYMER Public/Granted day:2013-08-01
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