Patent ID: 6335417
Filing Date: 2002-01-01
Classification: C08G,C09D,H01L,H05K,Y10T

Abstract:
A polyimide resin represented by Formula (2): whereinR1 represents a residue obtainable by removing all the carboxyl groups from an organic compound having 4 carboxyl groups, R2 represents a residue obtainable by removing all the isocyanate groups from an organic compound having 2 isocyanate groups, and R3 represents a residue obtainable by removing the hydroxyl group from a hydroxyl-terminal polybutadiene; L1 represent the ratio of the number of the component polybutadiene units and M1 the ratio of the number of the component polyimide units, respectively, to the total number of both L1 and M1; and n1 1 to 10,000, provided that L1+M1=1, 0