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    • 10. 发明授权
    • Coating system and method of applying the same
    • 涂布体系及其应用方法
    • US06316535B1
    • 2001-11-13
    • US09313627
    • 1999-05-18
    • Kenneth G. CaldwellRaymond H. FernandoVijaya K. Pidugu
    • Kenneth G. CaldwellRaymond H. FernandoVijaya K. Pidugu
    • C08K326
    • C08G18/3821C09D175/06
    • An aqueous, two component system for coating a substrate includes either a filler incorporated in both components prior to combining the components or an elevated amount of a filler, such as 50% by dry volume, in either component. The filler is preferably calcium carbonate, but may also be selected from titanium dioxide, sand, clay, mica, dolomite, silica, talc, perlite, gypsum, wallastonite, aluminum trihydrate, zinc oxide, barium sulfate, zinc sulfate, and combinations thereof. The first component includes a first polymer containing hydroxyl functional groups or amine functional groups and, optionally, a catalyst, preferably an organotin catalyst. The first polymer is selected from a polyester polyol, an acrylic polyol, a urethane polyol, a polyether polyol, a polyamine, an aldimine, a short oil alkyd, a silicone polyol, a cellulose ester, a vinyl polyol, and combinations thereof and preferably is a polyaspartic ester. The second component includes a second polymer which is polyisocyanate containing isocyanate functional groups. The coating can be applied by applying to the substrate the first component then separately applying the second component shortly thereafter. Alternatively, the components can first be mixed then applied to the substrate as a mixture.
    • 用于涂覆基材的水性双组分体系包括在组合组分之前的两种组分中加入的填料或增加量的填料,例如任何组分中的50%的干体积。 填料优选为碳酸钙,但也可选自二氧化钛,砂,粘土,云母,白云石,二氧化硅,滑石,珍珠岩,石膏,硅灰石,三水合铝,氧化锌,硫酸钡,硫酸锌及其组合。 第一组分包括含有羟基官能团或胺官能团的第一聚合物和任选的催化剂,优选有机锡催化剂。 第一聚合物选自聚酯多元醇,丙烯酸多元醇,氨基甲酸酯多元醇,聚醚多元醇,多胺,醛亚胺,短油醇酸树脂,硅氧烷多元醇,纤维素酯,乙烯基多元醇及其组合,优选 是聚天冬氨酸酯。 第二组分包括第二聚合物,其是含有异氰酸酯官能团的多异氰酸酯。 可以通过向基材施加第一组分然后在此之后不久分开施加第二组分来施加涂层。 或者,可以首先将组分混合,然后以混合物的形式施加到基材上。