Other

Tdk Corporation

Nof Corporation

Yasuo Moriya

Toshiaki Yamada

Kenji Endou

Michihisa Yamada

Yoshiyuki Yasukawa

Takeshi Takahashi

Hiroaki Hasegawa

Shigeru Asami

Tetsuya Itoh

Tomiho Yamada

Tetsuya Ito

The invention provides a heat-resistant, low-dielectric polymeric material that is preferably a copolymer in which a non-polar &agr;-olefin base polymer segment and a vinyl aromatic copolymer segment are chemically combined with each other, and that is a thermoplastic resin showing a multi-phase structure in which a dispersion phase formed by one segment is finely dispersed in a continuous phase formed by another segment. It is thus possible to achieve a polymeric material that is excellent in heat resistance, has high strength, and has a low dielectric constant and a reduced dielectric loss, and so is suitable for an electrical insulating material for high-frequency purposes.

Heat resistant, low dielectric polymers, and films, substrates, electronic parts and heat resistant resin molded parts using the same

The invention has for its object to provide a composite dielectric material having any desired dielectric constant selectable from a relatively wide range in a high-frequency band and a low dielectric loss tangent, and a film, substrate, electronic part or molded or otherwise formed article using the same. To accomplish this object, there is provided a composite dielectric material composition comprising a heat-resistant, low-dielectric polymeric material that is a resin composition comprising one or two or more resins having a weight-average absolute molecular weight of at least 1,000, wherein the sum of carbon atoms and hydrogen atoms in said composition is at least 99%, and some or all resin molecules have a chemical bond therebetween, and a filler. A film, substrate, electronic part or molded or otherwise formed article is obtained using this composition.

Composite dielectric material composition, and film, substrate, electronic part and molded article produced therefrom

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Tokyo, Japan

Yasuo Moriya