Improved vinylidene fluoride-tetrafluoroethylene copolymer molding composition

Abstract

Abstract PURPOSE:To prepare the titled composition having excellent transparency, keeping the heat-stability, chemical stability, etc. of the base resin, and suitable for optical materials, by compounding a vinylidene fluoride-tetrafluoroethylene copolymer with a methyl methacrylate polymer. CONSTITUTION:A vinylidene fluoride-tetrafluoroethylene copolymer having a tetrafluoroethylene content of 10-40mol% is compounded with 5-50wt%, especially 20-40wt% of a methyl methacrylate polymer, preferably copolymer of methyl methacrylate and <=30mol% of ethyl methacrylate. The compounding is preferably carried out usually by melt-kneading. Optical materials having various combination of refractive index and transmittance can be prepared easily by the control of the content of the methyl methacrylate polymer.

Inventors

• 👤 Kazuo Ishiwari
• 👤 和夫 石割
• 👤 Junko Yuhara
• 👤 湯原　純子
• 👤 Akira Omori
• 👤 晃 大森
• 👤 Nobuyuki Tomihashi
• 👤 信行 富橋
• 👤 Toshikuni Kaino
• 👤 戒能　俊邦
• 👤 Kaname Jinguuji
• 👤 神宮寺　要
• 👤 Shigeo Nara
• 👤 奈良　茂男

Bibliographic Details