Polythiourethane polymerizable composition and method for producing an optical resin using the same

A resin composition excellent in dyeing properties and resin strength, a resin obtained by curing the resin composition, as well as an optical component. An isocyanate compound preferably used in the transparent resin material, and at least one of one or more (poly) may have a sulfide bond polythiol compound in one molecule, a hydroxyl group in one molecule 2 polyhydroxy compounds having more than five, and / or hydroxy groups having one or more 1 or more having a thiol group and (poly) using hydroxy (poly) polymerizable composition comprising at least one mercapto compound.