Patent ID: 6225439
Filing Date: 2001-05-01
Classification: C08G,G02B

Abstract:
A composition for a resin which comprises:a compound (a) having one or more structures represented by the following formula (1) in one molecule: ##STR4##wherein R.sup.1 represents a hydrocarbon group having 1 to 10 carbon atoms, R.sup.2, R.sup.3 and R.sup.4 each represents a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms, X represents S or O, and an average number of S represented by X is about 50% or more of a total number of S and O constituting the three-membered ring containing X, anda compound (b) selected from the group consisting of an alcohol having an acryloyloxy group or a methacryloyloxy group, said compound (b) having one or more active hydrogen atoms in one molecule, at least one of the active hydrogen atoms being an active hydrogen atom other than the hydrogen atom of a SH group, wherein a mole ratio of a total of the active hydrogen atoms other than the hydrogen atom of the SH group in the compound (b) to a total of an episulfide group and an epoxy group in the compound (a) is 0.001 to 0.5.