发明名称 |
Process of forming an aramid copolymer |
摘要 |
The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5 (6) amino phenyl benzimidazole (DAPBI), paraphenylene diamine, and terephthaloyl dichloride, comprising the steps of: a) forming a solution of DAPBI and paraphenylene diamine dihydrochloride in a solvent system comprising an organic solvent and an inorganic salt; b) cooling the solution to a temperature of 30° C. or less; c) adding a stoichiometric amount of terephthaloyl dichloride, relative to the total amount of the DAPBI and the paraphenylene diamine dihydrochloride, to the solution; and d) agitating the solution of step c) to form a polymer. |
申请公布号 |
US8835600(B2) |
申请公布日期 |
2014.09.16 |
申请号 |
US201213559674 |
申请日期 |
2012.07.27 |
申请人 |
E I du Pont de Nemours and Company |
发明人 |
Lee Kiu-Seung |
分类号 |
C08G73/00;C08G73/18;C08G69/06;C08G69/00;C08G69/32 |
主分类号 |
C08G73/00 |
代理机构 |
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代理人 |
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主权项 |
1. A process 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 solution of DAPBI and paraphenylene diamine dihydrochloride in a solvent system comprising an organic solvent and an inorganic salt; b) cooling the solution to a temperature of 30° C. or less; c) adding a stoichiometric amount of terephthaloyl dichloride, relative to the total amount of said DAPBI and said paraphenylene diamine dihydrochloride, to the solution; and d) agitating the solution of step c) to form a polymer. |
地址 |
Wilmington DE US |