Patent ID: 6143399
Filing Date: 2000-11-07
Classification: B32B,C08J,H01L,Y10T

Abstract:
An aromatic polyimide film which has a thickness in the range of 10 to 125 .mu.m and comprises a polyimide prepared from a tetracarboxylic acid component and an aromatic diamine component comprising at least 5 molar % of phenylenediamine, wherein the polyimide film has a specific edge tearing resistance of 11 to 20 kg/20 mm/10 .mu.m, a tensile modulus of not lower than 450 kg/mm.sup.2, and a coefficient of linear expansion in the temperature range of 50 to 200.degree. C. of not higher than 2.5.times.10.sup.-5 cm/cm/.degree. C.