| abstract |
(57) [Summary] [Purpose] A composition for a plastic lens which gives a high refractive index, has a small specific gravity, and is excellent in strength and heat resistance. [Composition] A composition comprising an aromatic compound represented by the general formula [1], an isothiocyanate compound and a radical polymerization initiator as essential components. [Chemical 1] [In formula, X is either -H, -ROH, or -RSH. (R is a hydrocarbon group represented by C n H 2n where n is 1 to 4) |