Process for preparing poly(arylene sulfide sulfone)
US4988796A · kind A · utility
2Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1990 |
| Grant date | Jan 29, 1991 |
| Priority date | — |
| Expiry date | Feb 20, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G75/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing poly(arylene sulfide sulfone) by contacting a dihaloaromatic sulfone, an organic amide, a sulfur-containing compound selected from the group consisting of alkali metal bisulfides, hydrogen sulfide and N-methyl-2-pyrrolidinethione, water, and an alkali metal carboxylate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.