PURASUCHITSUKUHIKARIDENSOTAIOYOBISONOSEIZOHOHO

摘要

PURPOSE:To distribute polymers A, B respectively essentially consisting of methyl methacrylate and phenyl methacrylate at the mixing ratios changed continuously from the inside toward the surface by using a monomer C essentially consisting of a phenyl methacrylate monomer. CONSTITUTION:A molding prepd. by dissolving and mixing the polymer A essentially consisting of the methyl methacrylate and the monomer C essentially consisting of the phenyl methacrylate monomer. The monomer C is polymerized to obtain the polymer B essentially consisting of the phenyl methacrylate after the continuous concn. distribution of the monomer C is applied from the inside toward the surface of said molding or while said distribution is applied thereto by evaporating the monomer C from the surface of the molding. The plastic light transmission body in which the mixing ratio of the polymer A and the polymer B changes continuously from the inside toward the surface is thereby obtd.