Patent ID: 8057902
Filing Date: 2011-11-15
Classification: C08G,H01L,H05K,Y10T

Abstract:
1. A phosphorus-containing epoxy resin containing a naphthol-aralkyl skeleton represented by general formula (1), wherein a is an integer of 1, 2, 3, 4, 5 or 6, b is an integer of 1, 2, 3, 4, 5, 6 or 7, c is an integer of 1 or more, X is benzene, naphthalene, anthracene, phenanthrene or biphenyl, Y is at least one of general formulae (2)-(4), with at least one of general formula (3) or general formula (4) being present, wherein d is 0 or 1 R wherein e is 0 or an integer of 1, 2, 3, 4 or 5, b is an integer of 1, 2, 3, 4, 5, 6 or 7, g is an integer of 1 or more, d is 0 or 1, f is an integer of 1, 2, 3, 4, 5 or 6, the sum total of f and e is an integer of 1, 2, 3, 4, 5 or 6, R X is benzene, naphthalene, anthracene, phenanthrene or biphenyl, Y is at least one of general formulae (2)-(4), Z is at least one of general formulae (5) and (6), wherein h is 0, 1, 2 or 3, R wherein i is 0, 1, 2, 3, 4 or 5, and R