Stock material or miscellaneous articles – Structurally defined web or sheet – Physical dimension specified
Patent
1998-11-02
2000-11-07
Short, Patricia A.
Stock material or miscellaneous articles
Structurally defined web or sheet
Physical dimension specified
428409, 428416, 428458, 4284735, 528353, B32B 1508, B32B 2706
Patent
active
061433993
ABSTRACT:
An aromatic polyimide film which is favorably employed for preparing a laminate of an aromatic polyimide film, an adhesive layer, and an electroconductive sheet is made of a polyimide prepared from a tetracarboxylic acid component containing at least 15 molar % of biphenyltetracarboxylic acid (or its dianhydride or ester) and an aromatic diamine component containing at least 5 molar % of phenylenediamine, has a specific edge tearing resistance of 11 to 22 kg/20 mm/10 .mu.m, and contains not more than 0.4 weight percent of a volatile component.
REFERENCES:
patent: 4778872 (1988-10-01), Sasaki
patent: 5166308 (1992-11-01), Kreuz
patent: 5254412 (1993-10-01), Fujimoto
patent: 5374469 (1994-12-01), Hino
patent: 5593774 (1997-01-01), Hiroe
Kohno Takashi
Morishige Susumu
Okihara Hideaki
Otani Akinori
Short Patricia A.
Ube Industries Ltd.
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