Method of preparing polyphenylene sulfide and high-viscosity polyphenylene sulfide prepared using the same
US10941249B2 · kind B2 · utility
0Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2017 |
| Grant date | Mar 9, 2021 |
| Priority date | — |
| Expiry date | Dec 6, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/0025
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a method of preparing a polyphenylene sulfide and a high-viscosity polyphenylene sulfide prepared using the method. In this method, the ratio of an organic phase to an aqueous phase is controlled by controlling dehydration conditions, so that high viscosity may be realized without adversely affecting a reaction or physical properties during preparation of the polyphenylene sulfide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.