Patent ID: 7678874

Claim:
A polyimide having a primary alcoholic hydroxyl group and represented by the following general formula (1), wherein X represents a tetravalent organic group, Y represents a divalent organic group represented by the general formula (2), wherein A may be same with or different from one another and represents a divalent organic group selected from the following radicals: each of B and C may be same with or different from one another and represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms, each of a and b is 0 or 1, c is an integer of from 0 to 10, and R 1 may be the same with or different from one another and is a monovalent group selected from the group consisting of a phenolic hydroxyl group, a carboxyl group, —OCH 2 CH(OH)CH 2 OH, —OCH(CH 2 OH)CH 2 OH, —COOCH 2 CH(OH)CH 2 OH, and —COOCH(CH 2 OH)CH 2 OH, with at least one R 1 being a monovalent group selected from the group consisting of —OCH 2 CH(OH)CH 2 OH, —OCH(CH 2 OH)CH 2 OH, —COOCH 2 CH(OH)CH 2 OH, and —COOCH(CH 2 OH)CH 2 OH, Z represents a divalent organic group, W represents a divalent organic group having an organosiloxane structure, k is a positive number, and each of m and n is equal to 0 (zero) or a positive number, with 0.1≦ k /( k+m+n )≦1, 0≦ m /( k+m+n )≦0.8, 0≦ n /( k+m+n )≦0.8, wherein said polyimide having a monovalent group selected from the group consisting of —OCH 2 CH(OH)CH 2 OH, —OCH(CH 2 OH)CH 2 OH, —COOCH 2 CH(OH)CH 2 OH, and —COOCH(CH 2 OH)CH 2 OH is derived by reacting a polyimide having a phenolic hydroxyl group or a carboxyl group with glycidol in a mole ratio of 0.3 to 3 of the glycidol relative to the phenolic hydroxyl group-containing polyimide or carboxyl group-containing polyimide.