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    • 6. 发明授权
    • Method for improving the adhesion of a repair coating to a previously coated substrate
    • 用于改善修复涂层与预先涂覆的基底的粘附性的方法
    • US06187376B1
    • 2001-02-13
    • US09165147
    • 1998-10-01
    • Donald H. CampbellMichael A. Gessner
    • Donald H. CampbellMichael A. Gessner
    • B05D714
    • C09D201/025B05D5/005C08K5/57C09D7/63C08L2666/16
    • The invention provides a method for improving the adhesion of a repair coating to a coated substrate. It requires that at least one coating composition be applied to a substrate, the coating composition having (a) a film forming component with (i) a crosslinking component comprising one or more aminoplast resins, and (ii) one or more polymers having one or more functional groups which are reactive with the crosslinking component, (b) an adhesion improving additive comprising one or more compounds containing Sn(IV), (c) a catalyst for promoting a reaction between crosslinking agent (i) and one or more polymers (ii). The at least one coating composition is cured to provide a coated substrate and one or more repair coatings are applied to the coated substrate. In a preferred aspect of the invention, the one or more repair coatings applied are the same as the at least one coating composition. In a preferred aspect of the invention the at least one coating composition of the invention further comprises (d) an adhesion promoting component consisting of (i) an epoxy group containing component, and (ii) a monofunctional carboxy group component.
    • 本发明提供了一种用于改善修复涂层与涂覆的基底的粘附性的方法。 要求将至少一种涂料组合物施用于基材上,涂料组合物具有(a)成膜组分,(i)包含一种或多种氨基塑料树脂的交联组分,和(ii)一种或多种聚合物,其具有一个或多个 与交联组分反应的更多官能团,(b)包含一种或多种含有Sn(IV)的化合物的粘合改进添加剂,(c)促进交联剂(i)与一种或多种聚合物之间的反应的催化剂 ii)。 将至少一种涂料组合物固化以提供涂覆的基底,并且将一个或多个修复涂层施加到涂覆的基底上。 在本发明的优选方面,所施用的一种或多种修复涂层与至少一种涂料组合物相同。 在本发明的优选方面,本发明的至少一种涂料组合物还包含(d)由(i)含环氧基的组分和(ii)单官能羧基组分组成的粘合促进组分。