Patent ID: 7786219

Claim:
A thermosetting resin represented by the formula (17), wherein: X— is represented by the formula (18) in which (a) R 1 , R 2 , R 7 and R 8 are the same or different and are a halogen atom, an alkyl group having 6 or less carbon atoms or a phenyl group, R 3 , R 4 , R 5 and R 6 are the same or different and are a hydrogen atom, a halogen atom, an alkyl group having 6 or less carbon atoms or a phenyl group and A is a cyclic hydrocarbon, or (b) R 1 , R 2 , R 3 , R 7 and R 8 are the same or different and are a halogen atom, an alkyl group having 6 or less carbon atoms or a phenyl group, R 4 , R 5 , R 6 are the same or different and are a hydrogen atom, a halogen atom, an alkyl group having 6 or less carbon atoms or a phenyl group and A is a cyclic hydrocarbon or an organic group having an aromatic group, or an organic group having an aromatic group, —(O—Y)— is represented by the formula (19) in which R 9 and R 10 are the same or different and are a halogen atom, an alkyl group having 6 or less carbon atoms or a phenyl group and R 11 and R 12 are the same or different and are a hydrogen atom, a halogen atom, an alkyl group having 6 or less carbon atoms or a phenyl group, —(O—Y)— is an arrangement of one kind of structure defined by the formula (19) or a random arrangement of two or more kinds of structures defined by the formula (19), Z is an organic group which has one or more carbon atoms and optionally contains an oxygen atom, each of a and b is an integer of 0 to 300, provided that at least either a or b is not 0, and each of i is independently an integer of 0 or 1.