Patent ID: 7419707
Filing Date: 2008-09-02
Classification: C08K,C09D,C09K,G02B,G02F,Y10T

Abstract:
1. A coating composition for the formation of a low refractive index layer, comprising: a fluorine-containing olefin-based polymer that has a polysiloxane segment represented by formula 1 in its main chain, has a fluorine content of 30 mass % or more, and contains a plurality of ethylenically unsaturated groups; a hollow silica fine particle having an average particle diameter of 5 to 200 nm and a refractive index of 1.17 to 1.40: wherein R 1 and R 2 , which may be the same or different, each represents a hydrogen atom, an alkyl group, an alkyl halide group or an aryl group; and a polysiloxane compound having a reactive organic functional group represented by formula 7: wherein R 1 to R 4 each represents a substituent having a carbon number of 1 to 20; when each substituent is present in a plural number, these groups may be the same or different; at least one group of R 1 , R 3 and R 4 represents a reactive organic functional group; x represents an integer satisfying 1≦x≦4; y represents an integer satisfying 10≦y≦500; z represents an integer satisfying 0≦z≦500; and the compound may be a random copolymer or a block copolymer.