Thermotropic aromatic copolyesters comprising recurring structural units derived from para-(para-hydroxyphenoxy)benzoic acid or derivative thereof
US5138021A · kind A · utility
10Cited by
4References
12Claims
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Inventors
Key dates
| Filing date | Oct 24, 1990 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Oct 24, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/605
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel thermotropic aromatic copolyesters comprise the following recurring structural units: ##STR1## and are prepared by polycondensing p-(p-hydroxyphenoxy)-benzoic acid with an aromatic or cycloaliphatic diacid, a diphenol and, optionally, p-hydroxybenzoic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.