Jx Nippon Oil Energy Corporation

Toru Kitai

Toshio Nakayama

Satoshi Murouchi

The fully-aromatic thermotropic liquid crystal polyester resin composition of the present invention comprises 100 parts by mass of a fully-aromatic thermotropic liquid crystal polyester; and 50 to 150 parts by mass of titanium oxide, wherein the fully-aromatic thermotropic liquid crystal polyester comprises a repeating structural unit represented by the following formula (1), a repeating structural unit represented by the following formula (2), and a repeating structural unit represented by the following formula (3), and comprises 65 mole % to 78 mole % of the repeating structural unit represented by the formula (1). wherein X and Y each represent a divalent group having an aromatic ring.

Fully-aromatic thermotropic liquid crystal polyester resin composition, molded object, and LED reflector

A resin composition for surface-mountable (SMT) camera modules which is excellent in the balance between heat resistance, rigidity, strength or moldability and surface exfoliation characteristics is provided by using a liquid-crystal polyester resin composition which comprises 100 parts by mass of a liquid-crystal polyester, 15 to 60 parts by mass of talc having a number-mean particle diameter of 10 to 50 &#x3bc;m, 25 to 50 parts by mass of glass fiber having a number-mean fiber length of 100 to 200 &#x3bc;m, 6 to 20 parts by mass of titanium oxide, and 2 to 10 parts by mass of carbon black and which exhibits a melt viscosity of 10 to 100 Pa S as determined at a shear rate of 100 secand 370&#xb0; C. and a deflection temperature under load of 220&#xb0; C. or above.

Liquid crystal polyester resin composition for camera module

A liquid crystal polyester resin composition includes, based on 100 parts by mass of a liquid crystal polyester, 15 to 60 parts by mass of talc having a number average particle size of 10 to 50 &#x3bc;m, 25 to 50 parts by mass of a glass fiber having a number average fiber length of 100 to 200 &#x3bc;m and a number average fiber diameter of 4 to 8 &#x3bc;m, and 2 to 10 parts by mass of carbon black, wherein a melt viscosity as determined at a shear rate of 100 secat 370&#xb0; C. is 10 to 100 Pa&#xb7;S and a deflection temperature under load is 220&#xb0; C. or more. The liquid crystal polyester resin composition is used to provide a liquid crystal polyester resin composition for a camera module, having good heat resistance, rigidity, strength, and moldability, and also an excellent surface exfoliation property in a well balanced manner and being capable of being surface mounted (SMT).

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Tokyo, Japan

Toru Kitai