| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition giving coating liquids which can be cured at ordinary temperature to form UV light-screening films having high surface strengths, by mixing and reacting two kinds of specific alkoxysilanes. SOLUTION: This ordinary temperature-curable composition comprises a substance of the formula [X1, X2 are each an alkoxy which can be hydrolyzed to produce a silanol, such as methoxy, ethoxy, propoxy or butoxy; Y1, Y2 are each an alkyl such as methyl, ethyl, propyl or butyl; (a), (b), (c) and (d) are such numbers as satisfying the following inequalities and equations: 1<=(a)<=3, (a)+(b)=3, 1<=(c)<=3, and (c)+(d)=3] which is prepared by mixing and reacting a glycidoxypropyl group-containing alkoxysilane with an aminopropyl group-containing alkoxysilane preferably in a molar ratio of 2:1 to 1:1. The composition is compounded with a dilution solvent, a curing catalyst, and a UV light absorbent to provide a coating liquid for forming UV light- screening films which can be cured at ordinary temperature.
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