Moldable/extrudable thermotropic aromatic copolyesteramides
US4950730A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1989 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Jun 2, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/44
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
High molecular weight thermotropic aromatic copolyesteramides which can be molded/extruded into a wide variety of useful shaped articles having improved thermomechanical properties are comprised of recurring structural units of the formulae (I), (III) and (IV), and optionally (II), wherein: PA0 (I) represents the structure: ##STR1## in which R.sub.1 is a methyl or ethyl radical or a chlorine or bromine atom, with the proviso that the units (I) may be identical or different, PA0 (II) represents the structure: ##STR2## (III) represents the structure: ##STR3## in which n is an integer from 2 to 6, with the proviso that the units (III) may be identical or different, PA0 (IV) represents the structure: ##STR4## the molar ratio of the units (I) relative to the sum of the units (II)+(III) ranges from 0.95 to 1.05; PA0 the amount of the units (II) in the mixture of (II)+(III) ranges from 0 to 80 mol % and that of the units (III), on the same basis, ranges from 100 to 20 mol %; PA0 the amount of the units (IV), expressed relative to the amount of the units (I) ranges from 5 to 100 mol %; and PA0 said copolyesteramides have a flow temperature ranging from 200.degree. C. to 350.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.