Polyarylate formation by ester interchange reaction
US4485230A · kind A · utility
12Cited by
18References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 13, 1983 |
| Grant date | Nov 27, 1984 |
| Priority date | — |
| Expiry date | Sep 13, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/605
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing aromatic polyesters (polyarylates) by heating a bisphenol (e.g., Bisphenol-A), at least one dicarboxylic acid (e.g., terephthalic acid and isophthalic acid) and acetic anhydride, in a carefully programmed sequence of steps, resulting in a polymer of suitable inherent viscosity and good color.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.