Patent ID: 6818702
Filing Date: 2004-11-16
Classification: C08G,C08L,H01L,H05K

Abstract:
A thermosetting resin composition wherein an epoxy resin (Component (c)) which has a number average molecular weight of 7,000 to 35,000, an average functional group number of 2 or more per one molecule, and a functional group equivalent of 2,000 to 18,000 g/mol, and which may have a polybutadiene or hydrogenated polybutadiene skeleton, is incorporated in combination with the Component (A) which has a number average molecular weight of 800 to 35,000, an average functional group number of more than 2 per one molecule, and a functional group equivalent of 150 to 2,000 g/mol, and which may have a polybutadiene or hydrogenated polybutadiene skeleton, both resins being incorporated in such ratio that the total average equivalent becomes 300 to 2,000 g/mol (both resins being collectively referred to herein as Component (C)), and a resin (Component (d)) which has a number average molecular weight of 7,000 to 35,000, an average functional group number of 2 or more per one molecule, and a functional group equivalent of 2,000 to 18,000 g/mol, which has one or more functional groups selected from carboxyl group, amino group, acid anhydride group, hydrazide group, mercapto group, hydroxyl group and isocyanate group, and no blocked carboxyl group, and which may have a polybutadiene or hydrogenated polybutadiene skeleton, is incorporated in combination with the Component (B) which has a number average molecular weight of 800 to 35,000, an average functional group number of more than 2 per one molecule, and a functional group equivalent of 150 to 2,000 g/mol, which has one or more functional groups selected from amino group, carboxyl group, acid anhydride group, mercapto group, hydroxyl group, isocyanate group and hydrazide group, and no blocked carboxyl group, and which may have a polybutadiene or hydrogenated polybutadiene skeleton, both resins being incorporated in such ratio that the total average equivalent becomes 300 to 2,000 g/mol (both resins being collectively referred to herein as Component (D)), and wherein the ratio of the Component (D) to the Component (C) is from 0.5 to 2.0 in terms of the overall equivalent number of the functional group (s) of Component (D) capable of reacting with the epoxy group of the Component (C) to the overall equivalent number of the epoxy group of the Component (C).