Process for the preparation of copoly(arylene sulfide) using an oxygen-containing gas
US4826956A · kind A · utility
8Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1988 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | May 20, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G75/0263
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for producing a copoly(arylene sulfide) corresponding to the structure EQU [--A--S--).sub.1-x (--A--S--S--).sub.x ].sub.n wherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.5 to 0.001 and n is at least 200, comprising reacting within a reaction zone a mixture of a diiodoaromatic compound and elemental sulfur at a polymer producing temperature wherein the reaction zone contains an oxygen-containing gas flowing at a rate in the range of 0.001 to 0.08 ft3/hr/mol of oxygen per mole of sulfur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.