To provide a composition capable of forming a gradient film.
A composition contains (A) a fluorine-containing silicon compound (e.g. a polycondensate of fluoroalkyl alkoxysilane or a hydrolysate thereof and tetraalkoxysilane and a hydrolysate thereof and the like), (B) a silicon compound having (b) a polymerizable functional group (e.g. (meth)acryloyloxyalkyl alkoxysilane or a hydrolysate thereof, a polycondensate of (meth)acryloyloxyalkyl alkoxysilane or a hydrolysate thereof and tetraalkoxysilane and a hydrolysate thereof and the like), and (C) a fluorene compound having (c) a functional group having polymerizable property to the polymerizable functional group (b) (e.g. at least one kind selected from 9,9-bis((meth)acryloyloxyaryl)fluorenes and 9,9-bis((meth)acryloyloxy(poly)alkoxy aryl)fluorenes).
NAGASHIMA TAICHI
SHINAGAWA RUMI
FUKUI TOSHIMI
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Hiroshi Sanaka
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