Kuraray Co., Ltd.

Teruhisa Kaneda

Mitsuo Matsumoto

A novel wholly aromatic thermotropic liquid crystal polyester consisting essentially of 4-oxybenzoyl unit, terephthaloyl unit, 4,4'-dioxydiphenyl unit and 4,4'-dioxydiphenyl ether unit has a relatively low transition temperature to liquid crystal as well as good flow characteristics, and has thereby good melt-formability. The polyester gives melt extruded fibers and melt extruded films having superior mechanical strengths and elastic moduli, and also gives injection-molded products having superior strengths, excellent thermal characteristics, elastic moduli and impact strengths.

Wholly aromatic thermotropic liquid crystal polyester

A molded product prepared by injection molding a wholly aromatic thermotropic liquid crystal polyester consisting of 4-oxybenzoil moiety, terephthaloyl moiety and 4,4'-dioxydiphenyl ether moiety is characterized in high impact strength, small mechanical anisotropy and excellent resistance to heat. The thermotropic liquid crystal polyester gives, by blending therewith a known thermotropic liquid crystal polyester, a composition which can yield a formed product having a superior strength and a relatively small elastic modulus.

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Osaka, Japan

Teruhisa Kaneda