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LOW VOLATILE ORGANIC CONTENT AUTOMOTIVE REFINISH COATING COMPOSITION

机译:低挥发性有机物汽车涂料的组成

摘要

An automotive refinish coating composition having a volatile organic content not exceeding 3.0 pounds per gallon contains a hydroxyl functional polyester and a polyisocyanate curing agent. The hydroxyl functional polyester is prepared from reactants containing: (A) from about 15 percent to about 50 percent of a polyol or mixture of polyols, each having a formula molecular weight from about 50 to about 2,000; (B) from about 15 percent to about 50 percent of a long chain monocarboxylic acid or mixture of such acids, each having from about 6 to 24 carbon atoms; and (C) from about 15 percent to about 30 percent of 1,4-cyclohexane dicarboxylic acid; the percentages based on the total weight of reactants used in preparing the polyester. The refinish coating composition is particularly suitable as a clear topcoat over a pigmented basecoat.
机译:具有不超过每加仑3.0磅的挥发性有机物含量的汽车修补漆涂料组合物包含羟基官能聚酯和多异氰酸酯固化剂。羟基官能聚酯是由包含以下物质的反应物制备的:(A)约15%至约50%的多元醇或多元醇的混合物,每种分子式的分子量为约50至约2,000; (B)约15%至约50%的长链一元羧酸或此类酸的混合物,各自具有约6至24个碳原子; (C)约15%至约30%的1,4-环己烷二羧酸;基于用于制备聚酯的反应物的总重量的百分比。修补漆涂料组合物特别适合作为着色底漆上的透明面漆。

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