Solvent resistant polycarbonate compositions
US5162459A · kind A · utility
4Cited by
2References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1990 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | Sep 7, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L69/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymeric compositions are described which result from blending a mixture comprising: (A) at least one amorphous polycarbonate; (B) at least one cyclic polycarbonate oligomer containing hydroquinone carbonate structural units; and (C) at least one polycarbonate formation catalyst. The polymeric compositions have particular application in the preparation of shaped articles for use in environments characterized by the presence of solvents, solvent vapors, and/or potential for fire conditions. Methods for increasing the solvent and flammability resistance of amorphous polycarbonates are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.