Methacrylate resin having low hygroscopicity

Abstract

Abstract PURPOSE:To provide a methacrylate resin containing a methacrylic acid ester having an aromatic hydrocarbon group at the ester part as a component of a copolymer, keeping excellent optical properties and having excellent heat- resistance and low hygroscopicity. CONSTITUTION:(A) 10-90(wt)% methyl methacrylate, (B) 10-90% methacrylic acid ester having aromatic hydrocarbon group at the ester part (e.g. phenyl methacrylate, 2-naphthyl methacrylate, etc.) and (C) 0-40% vinyl monomer copolymerizable with the components A and B (e.g. methyl acrylate, styrene, etc.) are copolymerized preferably in the presence of a radical polymerization initiator (e.g. 2,2'-azobisisobutyronitrile). USE:Material for optical instruments, disk for information recording medium, etc.

Inventors

• 👤 Tatsuto Matsuda
• 👤 立人 松田
• 👤 Yasuaki Funae
• 👤 船江　保明
• 👤 Tadao Kondo
• 👤 忠夫 近藤
• 👤 Yoshikuni Mori
• 👤 森　悦邦

Bibliographic Details