Invention Grant
- Patent Title: Process for preparing aramid copolymer
- Patent Title (中): 制备芳族聚酰胺共聚物的方法
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Application No.: US13559667Application Date: 2012-07-27
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Publication No.: US08716431B2Publication Date: 2014-05-06
- 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: C08G64/00
- IPC: C08G64/00 ; C08G63/02
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, comprising the steps of: (a) forming a slurry of DAPBI and paraphenylene diamine in a solvent system comprising an organic solvent and an inorganic salt; and (b) adding a stoichiometric amount of terephthaloyl dichloride to the slurry in a single addition and allowing the formation of the polymer.
Public/Granted literature
- US20130197184A1 PROCESS FOR PREPARING ARAMID COPOLYMER Public/Granted day:2013-08-01
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