Process for preparing improved polyarylates
US5274069A · kind A · utility
2Cited by
9References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Sep 29, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/82
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyarylate is formed by reacting a mixture of esters of a dihydric phenol and trisphenol, at least one aromatic dicarboxylic acid, an alkali metal catalyst, an inert diluent having a boiling point of from about 200.degree. C. to about 300.degree. C. Polyarylates of improved shear sensitivity and higher molecular weight can be formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.