| 摘要 |
PURPOSE:To obtain the title composition which can form a cured coating film excellent in abrasion resistance, marring resistance, adhesiveness, etc., on the surface of a base material by mixing colloidal silica, a vinylsilane compound and a polyfunctional (meth)acrylate at a specified ratio. CONSTITUTION:The title composition consists of 5-70wt.% colloidal silica (A) comprising silica particles having a primary particle diameter of 1-200mum, 1-50wt.% component (B) comprising a hydrolyzate and/or partial condensate of a silane compound of the formula [wherein R1 is a single bond or a (substituted) divalent hydrocarbon group; R2 is a monovalent hydrocarbon group or H; R3 is a (substituted) monovalent hydrocarbon group; a is 1 to 3, and b is 0 to 2, provided that a+b=(1 to 3)]; 20-80wt.% polyfunctional monomer (C) containing at least two (meth)acryloyloxy groups in the molecule, and 0.1-5wt.% photopolymerization initiator (D) (the total of components A, B, C and D being 100wt.%). This composition can form a cured coating film excellent in abrasion resistance, marring resistance, weatherability, crack resistance, adhesiveness, etc., on the surface of a base material. |
