Contacting arylene sulfide polymer with oxygen in extruder by continuous processing
US4532310A · kind A · utility
2Cited by
3References
8Claims
0Family size
Inventors
Key dates
| Filing date | May 29, 1984 |
| Grant date | Jul 30, 1985 |
| Priority date | — |
| Expiry date | May 29, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G75/0295
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for continuously treating arylene sulfide polymer by passing the polymer through an extruder operated at conditions to produce mixing action at a temperature above the melting point of the polymer while contacting an amount of oxygen sufficient to produce a reduction of melt flow within a fixed residence time in the extruder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.