| 摘要 |
PURPOSE:To mix polymers having different refractive index from each other with good compatibility and to provide a transparent compsn. having an arbitrary refractive index by polymerizing an acrylic monomer having a high refractive index in the presence of a mixture of specified fluororesin polymers having low refractive indexes. CONSTITUTION:This transparent mixed resin compsn. is prepd. by adding a monomer having a high refractive index and a polymn. initiator, pref. a photo- polymn. initiator to a mixture of a fluorinated methacrylate polymer (A) wherein 2,2,3,3-tetra-fluoropropyl methacrylate is a main component and a vinylidene fluoride polymer (B) wherein vinylidene fluoride is a main component (a copolymer of 95-35mol% vinylidene fluoride with tetrafluoroethylene is pref.) and polymerizing the mixture. As the monomer having a high refractive index, at least one of methyl, ethyl, i-propyl, n-propyl, tert.-butyl and phenyl (meth) acrylates are used. |
