Liquid crystal polymer composition
OwnerMotoo Takayanagiinventor
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Abstract
A liquid-crystal polymer composition which comprises (A) a wholly aromatic liquid-crystal polymer, (B) a semi-aromatic liquid-crystal polymer and (C) a thermoplastic resin other than liquid-crystal polymers. It exhibits mechanical properties better than those of a liquid-crystal polymer composition which comprises the components (A) and (C) or the components (B) and (C) and is equal to the above composition in the proportion of the component (C). Further, the present invention enables the preparation of a polymer composition exhibiting liquid-crystal functions at a relatively low cost, thus giving a material useful as an engineering plastic.
Claims6
A liquid-crystal polymer composition which comprises (A) a wholly aromatic liquid-crystal polymer, (B) a semi-aromatic liquid-crystal polymer which contains units of at least one aliphatic group and the balance of which is composed of units of at least one group selected from the group consisting of carbonyl, ester, sulfone, amide, ether, thio ether, imide and azo groups, and aromatic units, and (C) a thermoplastic resin other than liquid-crystal polymers, in which component (A) has repeating structural units based on the following formulas:
- ##STR4## wherein X is halogen or alkyl, ##STR5## wherein X is halogen, alkyl or aryl, ##STR6## wherein X is halogen, alkyl or aryl, ##STR7## wherein X is hydrogen, halogen, or alkyl, ##STR8## wherein component (A) has repeating structural units selected from one of the following groups:
- (1) (A.sub.1), (B.sub.1), (B.sub.2) and (C.sub.1);
- (2) (A.sub.2), (B.sub.1), (B.sub.2) and (C.sub.1);
- (3) (A.sub.1), (B.sub.3), (B.sub.2) and (C.sub.1);
- (4) (A.sub.1), (B.sub.1), (B.sub.2) and (C.sub.3);
- and
- (5) (A.sub.1), (A.sub.2), (B.sub.2), (B.sub.2) and (C.sub.1).
Dependencies are inferred from the claim text.