Production process of arylene thioether copolymer
US5324814A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1991 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Apr 18, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G75/0295
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed herein is a process for the production of an arylene thioether copolymer (C), wherein an alkali metal sulfide is caused to act on a poly(arylene thioether) (A) having predominant recurring units of the formula [I]: ##STR1## wherein R denotes an alkyl group having 1-6 carbon atoms, and 1 stands for 0 or an integer of 1-4, in a water-containing polar organic solvent so as to depolymerize the poly(arylene thioether) (A), thereby preparing a prepolymer (B) having an alkali thiolate group on at least one terminal thereof and the resultant prepolymer (B) is then subjected to a polymerization reaction with at least one dihalogen-substituted aromatic compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.