Polycarbonates having improved hydrolytic stability
US4594404A · kind A · utility
20Cited by
9References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1984 |
| Grant date | Jun 10, 1986 |
| Priority date | — |
| Expiry date | Mar 20, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/081
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to moldable polycarbonate compositions and in particular to moldable polycarbonates which have ordered alternating repeating units derived from bis-(3,5-dimethyl-4-hydroxyphenyl)sulfone (TMBS) and 2,2-bis-(4-hydroxyphenyl)propane (Bisphenol A) dihaloformate, or ordered, alternating repeating units derived from bis-(3,5-dimethyl-4-hydroxyphenyl) sulfone (TMBS) dihaloformate and a bisphenol compound such as 2,2-bis-(4-hydroxyphenyl)propane (Bisphenol A). Such polycarbonates exhibit improved hydrolytic stability and also excellent processability in molding applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.