| 摘要 |
In a method for forming an abrasion-resistant coating film by heat-curing a coating composition composed mainly of a partially hydrolyzed product of alkoxysilane represented by the formula: Rn4Si(OR5)4-n wherein n is an integer of 0 to 2; R4 is alkyl having 1 to 6 carbon atoms, phenyl, allyl, vinyl, methacryloxy, methacryloxyalkyl, mercaptoalkyl, aminoalkyl, epoxyalkyl, epoxyalkyloxy, epoxyalkyloxyalkyl, tetrahydrofuryl or fluoroalkyl; and R5 is alkyl having 1 to 4 carbon atoms, an improvement comprises using as a curing catalyst one or more compounds selected from the group consisting of alkali metal salts of thio-acid, dithio-acid and their derivatives; barbituric acid and its derivatives; and beta -dicarbonyl compound.
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