The phosphorus content epoxy resin constituent, the prepreg and the resin equipped metallic foil, the adhesion sheet, the laminate and the multilayer board, the phosphorus content epoxy resin varnish for the coating, the phosphorus content epoxy resin seal material and the phosphorus content epoxy resin pouring into a mold material, reacting with organicity phosphorus compound and

摘要

PROBLEM TO BE SOLVED: To provide a phosphorus-containing epoxy resin composition which shows excellent flame retardancy without containing a halogen and which can enhance the adhesive strength between each layer in a laminated board or the like.;SOLUTION: The composition has a phosphorus-containing epoxy resin, which is obtained by reacting at least one of the organic phosphorus compounds represented by the formulas (1) and (2), {R1-R8 of the formula (1) and R'1-R'10 of the formula (2) are a 1-6C hydrocarbon group, a substituted group directly bound to a hetero atom or a hydrogen atom; X and X' are a substituted group represented by the formulas (3) and (4) [in which at least two of R"1-R"5 of the formula (3) are a hydroxyl group; at least two of R"'1-R"'7 of the formula (4) are a hydroxyl group; others are a 1-6C hydrocarbon group, a substituted group directly bound to a hetero atom or a hydrogen atom]} with an epoxy resin containing a novolac type epoxy resin of 20 mass % or more and a curing agent as essential components. The content of a phosphorus is 0.5-4.0 mass % with respect to the total amount of the composition. A triazine-modified novolak resin constitutes a part or all of the agent.;COPYRIGHT: (C)2002,JPO