Aramid copolymer

A technology of polymer and p-phenylenediamine, which is applied in the field of preparing aromatic polyamide polymers, and can solve problems such as control of the position of monomer components without

Active Publication Date: 2014-04-30
DUPONT SAFETY & CONSTR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, by conventional polymerization method, in NMP / CaCl 2 DAPBI / PPD copolymers made in solvent systems tend not to have control over the position of the monomer components

Method used

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  • Aramid copolymer
  • Aramid copolymer
  • Aramid copolymer

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Abstract

The invention concerns polymer powder comprising 2-(4-amino phenyl)-5 (6) amino phenyl benzimidazole (DAPBI), paraphenylene diamine, and terephthaloyl dichloride, capable of being dissolved in a solvent system comprising (i) N-methyl-2-pyrrolidone (NMP) or dimethylacetamide (DMAC) and (ii) an inorganic salt; wherein said polymer is capable of being redissolved in said solvent system after said polymer has been removed from said solvent system.

Description

technical field [0001] This patent application relates to a process for the preparation of aromatic polyamide polymers derived from 5(6)-amino-2-(p-aminophenyl)benzimidazole (DAPBI), p-phenylenediamine (PPD) and terephthaloyl dichloride (TCl), capable of forming fibers with excellent physical properties. Background technique [0002] Derived from 5(6)-amino-2-(p-aminophenyl)benzimidazole (DAPBI), p-phenylenediamine (PPD) and terephthaloyl dichloride (TCl or T, also commonly known as p-phenylene Diformyl chloride) fibers are known in the art. Such copolymers are Russian-made high-strength fibers (for example under the trade name and )Foundation. See Russian Patent Application 2,045,586. [0003] The two amines on DAPBI differ greatly in terms of reactivity and positional factors. The amine shown on the right side of the structure below (azole amine) is an order of magnitude more reactive than the amine on the left side of the structure (benzylamine). [0004] [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/32C08G73/18
CPCC08K3/16C08K5/3415C08G73/18C08K5/20C08G69/32C08G69/265C08L77/10C08L79/04
Inventor K-S.李
Owner DUPONT SAFETY & CONSTR INC
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