Organic glass having a high refractive index and excellent other physical properties and being suitable as materials for optical parts such as lenses and prisms. The organic glass comprises a copolymer obtained by adding a polymerization initiator to a mixture of three monomer components of diallyl isophthalate, a benzoate ester with an unsaturated alcohol, and a methacrylate ester and then polyme...

PURPOSE:To produce stably a curable resin having a side chain comprising an unsaturated group bonded thereto through a urethane bond, by reacting a polymer containing a hydroxyl group in the side chain with a specified unsaturated monoisocyanate. CONSTITUTION:A polymer containing a hydroxyl group in the side chain (e.g., 2-hydroxyethyl methacrylate/methyl methacrylate copolymer) is reacted with an...

A stabilizer for synthetic resins containing as an effective component a mixture comprising a phenol type compound (I) represented by the formula (I), (I) +TR wherein R1represents a C1-C3 alkyl group, and at least one sulfur type compound (II) selected from the group consisting of compounds represented by the formula (II-1), (II-1) wherein R2 represents a C...