Branched arylene sulfide polymer production
US4116947A · kind A · utility
32Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Apr 29, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G75/0231
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Branched arylene sulfide polymers of low melt flow are produced by employing (1) a p-dihalobenzene, (2) a polyhalo aromatic compound having more than two halogen substituents per molecule, (3) an alkali metal sulfide, (4) an N-alkyl lactam, and (5) controlled amounts of water in the presence or absence of a sodium carboxylate. The resulting polymers without prior curing can be fabricated into shaped products having desirable properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.