Polyester resin exhibiting optical anisotropy in molten state containing minor amounts of 6-oxy-2-naphthoyl units
US4983713A · kind A · utility
18Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1989 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Jul 3, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/605
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A novel polyester resin is provided which exhibits an anisotropic melt phase. The polymer comprises recurring 4-oxybenzoyl units, 6-oxy-2-naphthoyl units, aromatic dicarboxy units, and aromatic diol units as described in appropriate concentrations. The resulting polyester exhibits excellent melt processability in combination with good mechanical properties and a good retention of properties at elevated temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.