| 摘要 |
<p>A coating composition useful for improving the surface properties, such as surface hardness and chemical resistance, of plastic products, wooden products, metallic products, or the like, which comprises (A) partially hydrolyzed silicon compounds consisting essentially of copartial hydrolyzates of an organic silicon compound of the formula: RnSi(OR')4-n wherein n is 1 to 3, R is a hydrocarbon group and R' is an alkyl, and a tetraalkoxysilane, or a mixture of partial hydrolyzates of each organic silicon compound and tetraalkoxysilane, said partial hydrolyzate of the organic silicon compound being contained in a larger ratio to the partial hydrolyzate of the tetraalkoxysilane, (B) an acrylic copolymer and an etherated methylolmelamine, and (C) a solvent. The coating composition can give a transparent and hard coating film having excellent boiling water resistance, heat cycle resistance and weatherability even under severe conditions.</p> |
