Surface treated silica particle, dispersion thereof, and method for producing surface treated silica particle powder

摘要

Problem to be solved: to provide a surface treatment silica particle or the like capable of providing a good scratch resistance improving effect on the cured film of the photocurable coating composition and redispersing it to an organic solvent or a photoreactive liquid compound.The surface of sol gel silica particles isAn organosilicon compound represented by formula (1) and at least one of its hydrolysates: 2 mass parts or more for 100 mass parts of sol gelEquation (2): organosilazane compound represented by NH (sil43) 2And (3) surface treated silica particles coated with at least one of organosilane compounds represented by R5 sir63.(R4 is independently a monovalent hydrocarbon group, R5 is a monovalent hydrocarbon group, and R6 is a hydroxyl group, an amino group, an alkoxy group, or an acyloxy group.)(R1 is a hydrogen atom or an alkyl group, R2 is an alkylene group, R3 is a hydrogen atom or an alkyl group, X1 is a halogen atom)No selection