Polymatech Co., Ltd.

Tsukasa Ishigaki

Toru Kimura

Masayuki Tobita

Naoyuki Shimoyama

Hisashi Aoki

Tsunehisa Kimura

Masafumi Yamato

A mold product comprising liquid crystal composition for conducting heat. The liquid crystal composition contains liquid crystal polymer having an orientation degree &#x3b1; obtained by equation 1 below:Orientation degree &#x3b1;=(180&#x2212;&#x394;&#x3b2;)/180 equation 1In equation 1, &#x394;&#x3b2; is a half width in the intensity distribution obtained by fixing peak scattering angle in X-ray diffraction measurement and by varying the azimuth angle from 0 to 360 degrees, and orientation degree &#x3b1; is in a range between 0.5 and 1.0.

Heat conducting polymer mold products

A thermally conductive polymer molded article formed by molding a thermally conductive composition which comprises a liquid crystalline polymer and thermally conductive filler having magnetic anisotropy, wherein the liquid crystalline polymer and the thermally conductive filler are oriented in a predetermined direction by a magnetic field. The thermally conductive composition contains 100 parts by weight of the liquid crystalline polymer and 5 to 800 parts by weight of the thermally conductive filler having magnetic anisotropy. The thermally conductive filler has a thermal conductivity in at least one direction higher than the thermal conductivity of the liquid crystalline polymer.

Thermally conductive polymer molded article and method for producing the same

A thermal conductive polymer molded article is formed by molding a thermotropic liquid crystalline composition comprised mainly of a thermotropic liquid crystalline polymer, wherein the thermal conductive polymer molded article is formed by applying a magnetic field or an electric field to the thermotropic liquid crystalline composition melted by heating so that the thermal conductive polymer molded article has a first thermal conductivity (&#x3bb;) higher than a second thermal conductivity (&#x3bb;) of a molded article formed by molding the thermotropic liquid crystalline polymer without the application of the field. The thermal conductive polymer molded article preferably has a first thermal conductivity (&#x3bb;) of between 0.7 and 20 W/(m&#xb7;K). Preferably, the thermotropic liquid crystalline polymer comprises at least one polymer selected from (A) a wholly aromatic polyester and (B) a wholly aromatic polyester amide.

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Saitama, Japan

Tsukasa Ishigaki