Toray Industries, Inc.

Koji Tachikawa

Toru Yamanaka

Satoshi Matsubara

Hideyuki Umetsu

Makiko Saito

Mitsushige Hamaguchi

Hideo Matsuoka

Makito Yokoe

Keiko Osato

Takeshi Shimada

A liquid crystalline polyester resin composition for use in camera modules includes 20 to 45 parts by weight of spherical silica particles (B) having an average particle diameter of 15 &#x3bc;m or more and less than 30 &#x3bc;m in 100 parts by weight of a liquid crystalline polyester resin (A). A polyamide resin composition with which a camera module exhibiting excellent low dust forming property, toughness and impact strength can be obtained.

Camera module-use liquid crystalline polyester resin composition and camera module-use molded product formed thereof

A liquid crystalline polyester has a specifically high fluidity, a low anisotropy, a high toughness, a low gas property, an excellent heat resistance and a high dielectric breakdown resistance. The liquid crystalline polyester includes 38 to 74 mol % of structural unit(s) obtained from a hydroxycarboxylic acid, 31 to 13 mol % of a structural unit obtained from 4,4'-dihydroxybiphenyl and 31 to 13 mol % of a structural unit obtained from 2,6-naphthalenedicarboxylic acid (100 mol % in total), characterized in that the hydroxycarboxylic acid structural units include a structural unit obtained from 2-hydroxy-6-naphthoic acid in an amount of 89 mol % or more and the average sequence length of the structural unit obtained from 2-hydroxy-6-naphthoic acid is 0.1 to 1.

Liquid crystalline polyester and process for producing same

The present invention is directed to a hyperbranched-polyester comprising at least one kind of a structural unit selected from an aromatic oxycarbonyl unit (P), aromatic and/or aliphatic dioxy units (Q), and an aromatic dicarboxy unit (R), and a trifunctional or higher polyfunctional organic residue (B), wherein the content of B is within a range from 7.5 to 50 mol % based on entire monomers constituting the hyperbranched-polyester. The present invention provides a hyperbranched-polyester which can remarkably improve thin-wall flowability, stiffness and gas barrier property by blending with a thermoplastic resin, and a thermoplastic resin composition blended with the same.

Dendritic polymer, method for producing the same, and thermoplastic resin composition

A liquid crystal resin comprises structural units derived from at least two types of aromatic diols. The liquid crystal resin generates 100 ppm or less of acetic acid gas, less than 20 ppm of phenol gas, and less than 100 ppm of carbon dioxide gas when the liquid crystal resin is retained at a melting point +10&#xb0; C. (or at 335&#xb0; C. when the melting point is less than 325&#xb0; C.) for 30 minutes in a helium gas atmosphere. The present invention provides a liquid crystal resin or a composition containing this resin by which metal corrosion, clouding of glass, bulging of molded articles, and the like are reduced.

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Nagoya, Japan

Koji Tachikawa