Process for preparing ester carbonate copolymers
US4388455A · kind A · utility
14Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 1982 |
| Grant date | Jun 14, 1983 |
| Priority date | — |
| Expiry date | May 17, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/64
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Ordered ester/carbonate copolymers having improved properties at higher solids are provided by (1) contacting a dihydric organic compound such as bisphenol-A with a diacid halide such as terephthaloyl chloride and a carbonate precursor such as phosgene under conditions sufficient to form an ester/carbonate oligomer and (2) contacting the oligomer with additional carbonate precursor to produce the desired ordered ester/carbonate copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.