Anisotropic melt forming polyesters and polyesteramides
US4398019A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1981 |
| Grant date | Aug 9, 1983 |
| Priority date | — |
| Expiry date | Oct 28, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyester or polyesteramide capable of forming an anisotropic melt containing residues derived from dicarboxylic acids, dihydric phenols, hydroxyaromatic acids and aminophenols characterized in that at least 10 mole % of the acid residues of the polymer are radicals derived from fumaric acid or a substituted fumaric acid. Preferably at least 10 mole % of the residues other than the residues of fumaric acid or substituted fumaric acid are aromatic ring-substituted residues. The polyester or polyesteramides of the invention are particularly suitable for blending with chlorine-containing polymers at concentrations of up to 25% by weight of the polymer blend to improve the processability of the chlorine-containing polymer. A polyester in which the acid residues are entirely aliphatic is particularly suitable for blending with poly(vinyl chloride).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.