Eneos Corporation

Jxtg Nippon Oil & Energy Corporation

Gosuke Washino

The invention provides a resin composition that is capable of relaxing anisotropy while keeping the crystalline structure derived from liquid crystallinity and that has isotropic structure and physicality from a macroscopic view, even after the melt-processed molded article obtained by applying shear has been molded, cooled and fused without applying shear stress and subsequently re-cooled. The resin composition comprises a liquid crystal polyester resin (A) comprising structural unit (I) derived from a hydroxycarboxylic acid, structural unit (II) derived from a diol compound, and structural unit (III) derived from a dicarboxylic acid, and a resin (B) other than the liquid crystal polyester resin (A), and has an X-ray diffraction measured after fusing the resin composition that satisfies a specific condition.

Resin composition capable of relaxing anisotropy by fusing and resin molded article comprising the same

The invention provides a resin molded article containing a wholly aromatic liquid crystalline polyester resin and formed by being subjected to heat treatment, in which the enthalpy change &#x394; Hat the melting point of the first cycle and the enthalpy change &#x394; Hat the melting point of the second cycle of the temperature elevation process measured by a differential scanning calorimeter satisfy &#x394; H/&#x394; H&#x2265;2.0, and the dielectric loss tangent measured by the split-post dielectric resonator (SPDR) method at a measurement frequency of 10 GHz is 0.85&#xd7;10or less.

Resin molded article comprising wholly aromatic liquid crystalline polyester resin capable of reducing dielectric loss tangent by heat treatment and electrical and electronic component

[Problem] To provide a wholly aromatic liquid crystalline polyester resin having an excellent heat resistance and processability while having an extremely low dielectric tangent [Solving means] A wholly aromatic liquid crystalline polyester resin according to the present invention comprises,

Wholly aromatic liquid crystalline polyester resin, molded article, and electric and electronic components

The present invention provides a wholly aromatic liquid crystalline polyester resin having an excellent heat resistance while having an extremely low dielectric tangent.

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Tokyo-to, Japan

Gosuke Washino