Patent ID: 8748541

Claim:
A resin composition containing a vinyl compound (a) having a number average molecular weight in a range of from 500-3,000 and represented by the formula (1), a maleimide compound (b) represented by the formula (5), a cyanate ester resin (c) represented by the formula (6) and an epoxy resin (d) having a repeating structure of the formula (7), wherein —(O—X—O)— is a structure defined by the formula (2), —(Y—O)— is an arrangement of a structure defined by the formula (4) or a random arrangement of at least two kinds of structures defined by the formula (4), and each of a and b is an integer of 0 to 100, provided that at least one of a and b is not 0, wherein R 1 , R 2 , R 3 , R 7 and R 8 are the same or different and represent a halogen atom, an alkyl group having 6 or less carbon atoms or a phenyl group, R 4 , R 5 and R 6 are the same or different and represent a hydrogen atom, a halogen atom, an alkyl group having 6 or less carbon atoms or a phenyl group, wherein R 17 and R 18 are the same or different and represent a halogen atom, an alkyl group having 6 or less carbon atoms or a phenyl group, and R 19 and R 20 are the same or different and represent a hydrogen atom, a halogen atom, an alkyl group having 6 or less carbon atoms or a phenyl group, wherein Z represents an organic group having 200 or less carbon atoms which may contain at least one member selected from the group consisting of an oxygen atom, a sulfur atom, a phosphorus atom and a nitrogen atom, and c is an integer of 2 to 20, wherein R represents a hydrogen atom or a methyl group and n is from 1 to 10, wherein R 21 represents an alkyl group having 1 to 6 carbon atoms, R 22 represents an alkyl group having 1 to 6 carbon atoms or an alkoxy group having 1 to 6 carbon atoms, B is a direct bond or an alkylene group having 1 to 6 carbon atoms, and m is from 1 to 10; and wherein an amount of the vinyl compound (a) is in a range of from 50-80 parts by weight based on 100 parts by weight of a resin solid content of the resin composition.