Treatment of polyarylene sulfide/sulfone polymers
US5350834A · kind A · utility
34Cited by
17References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1993 |
| Grant date | Sep 27, 1994 |
| Priority date | — |
| Expiry date | May 14, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G75/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Poly(arylene sulfide/sulfone) polymers are treated in order to increase melt stability and decrease impurities by contacting the poly(arylene sulfide/sulfone) polymer with a soluble zinc compound and an acidic solution. In one embodiment, the polymer is treated first with the soluble zinc compound, followed by treatment with the acidic solution. In another embodiment, the polymer is treated in one step with a solution comprising a water soluble zinc compound in an acidic solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.