Thermal conductive polymer molded article and method for...

Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter

Reexamination Certificate

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C363S021070, C323S207000

Reexamination Certificate

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07079405

ABSTRACT:
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 (λ1) higher than a second thermal conductivity (λ2) 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 (λ1) of between 0.7 and 20 W/(m·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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Valtriani et al., “New PET-Based Liquid Crystalline Copolyesters and Their Use In Blends and Composites”, Macromol. Chem. Phys. 2001, 202, pp. 2202-2212.

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