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US 7,344,657 B2Granted
Aromatic liquid-crystalline polyester composition and film of the same
AssigneeSumitomo Chemical Company, Limited
InventorsSatoshi Okamoto, Shiro Katagiri
Life of this patent
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Abstract
An aromatic liquid-crystalline polyester composition is provided, which comprises at least one compound selected from an aliphatic carboxylate aryl ester and an aromatic carboxylic anhydride; an aromatic liquid-crystalline polyester; and a solvent containing at least 30% by weight of a halogen-substituted phenol compound. Using the composition, an aromatic liquid-crystalline polyester film with a low viscosity in melting state can be obtained.
Claims5
An aromatic liquid-crystalline polyester composition comprising:
- at least one compound selected from an aliphatic carboxylate aryl ester of formula (II) and an aromatic carboxylic anhydride;
- an aromatic liquid-crystalline polyester;
- and
- a solvent containing at least 30% by weight of a halogen-substituted phenol compound represented by formula (I):
- wherein A is a halogen atom or a tri-halogenated methyl and i is the number of A and is an integer of 1 to 5, provided that when i is an integer of 2 to 5, the substituents A are the same or different;
- wherein n indicates an integer of from 0 to 2, and R1 indicates an aryl group which has carbon atoms of from 6 to 20 and is optionally substituted with a halogen atom.
3 more elements
Dependencies are inferred from the claim text.