Process for preparing polyarylene sulfides of increased molecular weight
US5278283A · kind A · utility
23Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1992 |
| Grant date | Jan 11, 1994 |
| Priority date | — |
| Expiry date | Jan 13, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G75/025
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a process for preparing a polyarylene sulfide, which involves polycondensing a dihalogenated aromatic compound with a source of sulfur in an organic polar solvent while dehydrating at pressure under which polycondensation is performed. This process avoids dehydration operation of the raw materials, particularly the source of sulfur, prior to polycondensation, thereby resulting in the production of the polyarylene sulfide having a high molecular weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.