Process for preparing polyarylene sulfide with alkali metal salt of phenolic aromatic carboxylic acid
US5145946A · kind A · utility
12Cited by
2References
8Claims
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Key dates
| Filing date | Aug 5, 1987 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | Aug 5, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G75/0254
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing a polyarylene sulfide which comprises reacting an alkali metal sulfide compound and a polyhalo-substituted aromatic compound in an organic polar solvent in the presence of PA0 (A) an alkali metal salt of a phenolic aromatic carboxylic acid of the formula: EQU (HO).sub.m --Ar--(COOM).sub.n wherein Ar is a di- to tetravalent aromatic group having 6 to 24 carbon atoms; M is an alkali metal; and m and n are each 1 or 2, PA0 (B) an alkali metal hydroxide and/or an alkali metal alcoholate, and optionally, PA0 (C) an alkali metal salt of an inorganic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.