| 摘要 |
PURPOSE:To provide a polymer consisting of a polymer of hexafluoroneopentyl (meth)acrylate which is a novel fluorine-containing polymer, having high softening point, low refractive index, excellent flexibility and high adhesivity to a substrate and useful as an optical material. CONSTITUTION:The objective fluorine-containing polymer has a structural unit of formula I (X is H, F, Cl or CH3) and is useful as an optical material, especially a plastic sheath material for optical fiber or an antireflection coating agent. A preferable example of the polymer contains 10-100wt.% of the structural unit of formula I and 0-90wt.% of the structural unit of formula II (R<1> is H, F or CH3; R<2> is H, lower alkyl or fluoroalkyl). The polymer can be produced e.g., by dehydrohalogenating hexafluoroneopentyl alcohol of formula III and homopolymerizing the obtained novel compound of formula IV or copolymerizing the compound with other monomer compound. |
