Copolycarbonates based on bis(4-hydroxyphenyl)biphenyl disulfone
US4425456A · kind A · utility
2Cited by
10References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1981 |
| Grant date | Jan 10, 1984 |
| Priority date | — |
| Expiry date | Sep 28, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/41
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A copolycarbonate molding composition comprising the reaction product of an aromatic diphenol, a bis(4-hydroxyphenyl)biphenyl disulfone and a carbonate source is characterized by its high glass transition temperature. A blend thereof containing an organic acid salt is characterized by its improved flame retardance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.