| 摘要 |
PURPOSE:To obtain a hard coating agent with excellent storage stability and curing characteristics providing a coating layer with high hardness, excellent wear and solvent resistances and adhesiveness and no discoloration by compounding a specified organosilicon compd., an inorg. fine particle and aluminum perchlorate. CONSTITUTION:The title compsn. is prepared by compounding an organosilicon compd. of the formula (wherein R<1> is a 2-8C org. group contg. a epoxy group, a 1-6C alkyl, alkenyl, halogenated alkyl or aryl; R<2> is H, a 1-4C alkyl, alkoxyalkyl ro acyl; a is 1-3) or a partially hydrolyzed product thereof (e.g. 3-glycidoxypropyltrimethoxysilane), an inorg. fine particle such as antimony oxide sol, silica sol or alumina sol, pref. treated with a basic substance or stabilized under a basic condition, and aluminum perchlorate. |
