Low color poly(biphenyl ether sulfone) and improved process for the preparation thereof
US6593445B2 · kind B2 · utility
6Cited by
3References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Mar 23, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G75/23
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Improved carbonate method for producing poly(biphenyl ether sulfones) having a low color, the improvement being the use of small particle size anhydrous potassium carbonate. The resulting poly(biphenyl ether sulfones) are significantly improved in color.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.