| abstract |
The fluorinated alcohol R F -A-OH [I] of (R F is a perfluoroalkyl group or a part of hydrogen atoms of the fluorine atom-substituted polyfluoroalkyl group, A represents an alkylene group having 1 to 6 carbon atoms) and alkoxy silane and also comprising a condensation body of the nano-silica particles fluorine nano-silica composite particles, or a fluorinated alcohol R F '-A-OH [Ia] or HO-AR F''-A- OH [Ib] (R F' is A linear or branched perfluoroalkyl group containing O, S or N atoms, R F "is a linear or branched perfluoroalkylene group containing O, S or N atoms, A is a straight or branched perfluoroalkyl group containing 1 to 6 , And a condensate of an alkoxysilane and a nanosilica particle. |