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AssigneeKanegafuchi Kagaku Kogyo Kabushiki Kaisha
InventorsHiroyuki Furutani, Kazuhisa Danno, Yoshifumi Okamoto, Junya Ida, Yoshihide Oonari, Hitoshi Nojiri, Hirosaku Nagano
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The invention provides novel thermoplastic polyimide featuring solid adhesive property under low temperature, low hygroscopic coefficient, and solid resistivity to radioactive rays. The invention also provides novel polyamide acid which is substantially precursor of the thermoplastic polyimide, and also provides novel thermally fusible laminated film for covering conductive wires, featuring solid adhesive property under low temperature, solid resistivity to radioactive rays, and distinct suitability for covering superconductive wires in particular. The novel thermoplastic polyimide is represented by general formula (1) corresponding to the chemical structure shown below; ##STR1## wherein, Ar.sub.1, Ar.sub.2, Ar.sub.4, and Ar.sub.6, respectively designate divalent organic radical, whereas Ar.sub.3 and Ar.sub.5 respectively designate quadrivalent organic radical, wherein, 1, m, and n, respectively designate positive integer 0 to 1 or more than 1, wherein the sum of 1 and m aggregates 1 or more than 1, and wherein t designates positive integer of 1 or more than 1.
Thermoplastic polyimide represented by following formula (1);
Thermoplastic polyimide represented by general formula (2) corresponding to the chemical structure as follows;
Polyamide acid represented by general formula (3) corresponding to the chemical structure as follows;
Polyamide acid represented by general formula (4) corresponding to the chemical structure as follows;
Thermally fusible laminated film for covering wires comprising;
Dependencies are inferred from the claim text.