Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Process of forming aramid copolymer

A technology of polymers and oligomers, which is applied in the field of preparing aromatic polyamide polymers, and can solve problems such as the control of the position of monomer components that do not have

Active Publication Date: 2014-04-30
DUPONT SAFETY & CONSTR INC
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process of forming aramid copolymer
  • Process of forming aramid copolymer
  • Process of forming aramid copolymer

Examples

Experimental program
Comparison scheme
Effect test

example

example 1

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5 (6) amino phenyl benzimidazole (DAPBI), paraphenylene diamine (PPD), and terephthaloyl dichloride, comprising the steps of: (a) forming a slurry of DAPBI in a solvent system comprising an organic solvent and an inorganic salt; (b) adding less than a stoichiometric amount, relative to the amount of DAPBI, of terephthaloyl dichloride to the slurry; (c) agitating the slurry to react the DAPBI and terephthaloyl dichloride to form an oligomeric solution; (d) adding PPD to the oligomeric solution and agitating until essentially all of the PPD is dissolved, followed by the addition of terephthaloyl dichloride to form a prepolymer solution; and (e) allowing the prepolymer solution to form a polymer.

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 high-strength fibers made in Russia (for example, under the trade name with )Foundation. See Russian Patent Application 2,045,586. 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). Therefore, by t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com