Agc Inc.

Kobe University

Toshifumi Kakiuchi

Hideaki Tanaka

Takeshi Yamada

Shigeru Aida

Yoji Nakajima

Masahide Yodogawa

Akihiko Tsuda

Masakazu Ataku

Yoshitaka Sunayama

Aya Serita

Takashi Okazoe

Hiroshi Wada

To provide a fluorinated elastic copolymer composition such that solubility of a fluorinated elastic copolymer in a solvent is excellent, the solvent is easily removed, and the solvent is easily available. A fluorinated elastic copolymer composition comprising a fluorinated elastic copolymer having units based tetrafluoroethylene and units based on CF=CFOR(wherein Ris a Cperfluoroalkyl group), and a fluorinated solvent having a perfluorohydrocarbon group, wherein the perfluorohydrocarbon group having the largest number of carbon atoms in the fluorinated solvent has from 3 to 7 carbon atoms, the fluorinated solvent has a boiling point of from 50 to 160&#xb0; C., and the fluorinated solvent has a fluorine atom content (fluorine atom content (mass %)=(19&#xd7; number of fluorine atoms in the fluorinated solvent/molecular weight of the fluorinated solvent)&#xd7;100) of from 69 to 80 mass %.

Fluorinated elastic copolymer composition, coating material, and coated article

To provide an ETFE copolymer and a wire coating resin material capable of forming a coating layer which is excellent in stress cracking resistance under a high temperature and which has a high heat resistance temperature, and an electric wire having a coating layer which is excellent in stress cracking resistance under a high temperature and which has a high heat resistance temperature. A copolymer comprising structural units derived from ethylene, structural units derived from tetrafluoroethylene, and structural units derived from a third monomer, wherein in an elution curve obtained by a temperature rising elution fractionation method with respect to the copolymer, a ratio (L/H) of a proportion (L: area %) of components with elution temperatures of from 190 to 200&#xb0; C. to a proportion (H: area %) of components with elution temperatures of at least 205&#xb0; C., and a proportion (M: mol %) of structural units derived from the third monomer based on all structural units of the copolymer, satisfy a relation of log (L/H)/M&#x2265;0.90.

Copolymer, method for its production, wire coating resin material and electric wire

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Chiyoda-ku, Japan

Toshifumi Kakiuchi