Aromatic polyester of 6,6'-(ethylenedioxy)di-2-naphthoic acid, process for production thereof and film, fiber and other shaped articles therefrom
US4581438A · kind A · utility
5Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1984 |
| Grant date | Apr 8, 1986 |
| Priority date | — |
| Expiry date | Dec 17, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/6886
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A novel, substantially linear aromatic polyester comprising 6,6'-(ethylenedioxy)di-2-naphthoic acid as a main acid component and an aliphatic glycol having 2 to 10 carbon atoms in the main chain of the glycol as a main glycol component. The aromatic polyester is prepared by condensing an ethylene glycol diester of 6,6'-(ethylenedioxy)di-2-naphthoic acid, or a mixture of a major proportion of said naphthoate with a dicarboxylic acid, a diol, a hydroxycarboxylic acid or an ester-forming derivative thereof, at an elevated temperature. The aromatic polyester has excellent mechanical properties such as strength and Young's modulus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.