Patent ID: 6797750
Filing Date: 2004-09-28
Classification: C08G,C08K,C08L,H01L,H05K

Abstract:
A flame-retardant epoxy resin composition comprising an epoxy resin (A) and a phosphazene compound (B), wherein said phosphazene compound (B) is included in the range of 0.01 to 70% by weight relative to a total quantity of said epoxy resin (A) and said phosphazene compound (B), andwherein said phosphazene compound (B) is at least one member selected from the group consisting of (1) a cyclic and/or a chain phosphazene compound expressed by a general formula(1): wherein each R1 and R2, being the same or different from each other, is an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, an aryl group having 6 to 14 carbon atoms, an alkylaryl group having 7 to 18 carbon atoms, an alkenyl group having 2 to 18 carbon atoms, an alkenylaryl group having 8 to 18 carbon atoms, an amino group-substituted phenyl group, an aminoalkyl group-substituted phenyl group where the aminoalkyl group has 1 to 6 carbon atoms, a hydroxy group-substituted phenyl group, a hydroxyalkyl group-substituted phenyl group where the hydroxyalkyl group has 1 to 6 carbon atoms, a glycidyloxy group-substituted phenyl group or, a glycidyloxyalkyl group-substituted phenyl group where the glycidyloxyalkyl group has 4 to 9 carbon atoms, providing that at least one of n R1s and n R2s is the amino group-substituted phenyl group, the aminoalkyl group-substituted phenyl group where the aminoalkyl group has 1 to 6 carbon atoms, the hydroxyalkyl group-substituted phenyl group where the hydroxyalkyl group has 1 to 6 carbon atoms, the glycidyloxy group-substituted phenyl group or the glycidyloxyalkyl group-substituted phenyl group where the glycidyloxyalkyl group has 4 to 9 carbon atoms, and n indicates an integer of from 3 to 10000;(2) a polymer of said cyclic and/or said chain phosphazene compound; and(3) a reaction product of said cyclic and/or said chain phosphazene compound with at least one compound selected from the group consisting of an epoxy compound, a phenol compound, an amine compound and an acid anhydride.