Patent ID: 7354989

Claim:
A method for manufacturing a polymerizable composition comprising a compound which has at least one structure represented by formula (1), comprising forming a polythioepoxy compound from a polyepoxy compound, wherein a thiation agent in an amount of 0.9 to 1.3 equivalents is used with respect to one epoxy equivalent of the polyepoxy compound so that the total of a thioepoxy compound A which has at least one structure represented by formula (2) and at least one structure represented by formula (3), and a thioepoxy compound B which has at least one structure represented by formula (4) and at least one structure represented by formula (3), which are in the polymerizable composition, is 4 mass percent or less with respect to the total mass of the polymerizable composition, wherein formulae (1) to (4) are as follows: (where R 1 represents a hydrocarbon having 1 to 10 carbon atoms, R 2 , R 3 , and R 4 each represent a hydrocarbon group having 1 to 10 carbon atoms or a hydrogen atom)