Patent ID: 7049371
Filing Date: 2006-05-23
Classification: C08G,C08J,H01L,H05K

Abstract:
1. A material for an insulating film which comprises, as a component forming the film, a copolymer obtained by reacting a polyamide represented by following formula [1]with a reactive oligomer having a substituent which can react with carboxyl group, amino group or hydroxyl group in a structure of the polyamide: wherein R 1 to R 4 each independently represent hydrogen atom or a monovalent organic group, X a and X b each represents a tetravalent group selected from groups represented by following formulae (A), wherein X a and X b may be the same with or different from each other, Y represents at least one divalent group selected from groups represented by following formulae (B), (C), (D) and (B), Z represents a divalent group selected from groups represented by following formulae (F), m and n each represent an integer satisfying relations of m>0, n≧0, 2≦m+n≦1,000 and 0.05≦m/(m+n)≦1 and arrangement of repeating units in said polyamide represented by formula (1) may be a block arrangement or a random arrangement; wherein X 1 in formulae (A) and (F) represents a divalent group selected from groups represented by following formulae (G): R in formulae (C) represents an alkyl group or a monovalent group selected from groups selected from groups represented by formulae (H): and hydrogen atoms on a benzene ring in groups represented by Formulae (A), (B), (C), (D), (B), (F) and (G) may be substituted with at least one atom or group selected from alkyl groups having 1 to 4 carbon atom, fluorine atom and trifluoromethyl group.