Patent ID: 6084053
Filing Date: 2000-07-04
Classification: C08G,H01B,H05K,Y10S,Y10T

Abstract:
An electronic part comprising, as a structural component, an electrical insulating material formed of a polyimide containing a recurring unit represented by the following general formula (1): ##STR20## wherein X represents at least one group selected from the following X1, X2 and X5, Y represents at least one group selected from the following Y1 to Y3, provided that at least one of X and Y has a fluorene skeleton, R1 to R9 in X1 and X2 and Y1 and Y3 respectively represent an alkyl group, an aryl group, an arylalkyl group, or an alkyl halide group, repeat numbers n, m, p, q, s, t, w and z denote integers from 0 to 2, and r denotes integers from 1 to 2, ##STR21## wherein the symbol D represents a group shown by the formula --CYY'--, wherein Y and Y' respectively represent an alkyl group or an alkyl halide group; a group represented by the following formula: ##STR22## a group represented by the following formula: ##STR23## or a group represented by the following formula: ##STR24## wherein the symbol B represents a group --C(CH.sub.3).sub.2 --, --C(CF.sub.3).sub.2 --, --O--, ##STR25## and a repeat number v denotes an integer of 0 or 1.