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    • 4. 发明授权
    • Textured weatherable powder coatings
    • 纹理耐候的粉末涂料
    • US06541544B1
    • 2003-04-01
    • US09579759
    • 2000-05-26
    • Stephen C. HartJeffrey G. SchmiererBrian W. Carlson
    • Stephen C. HartJeffrey G. SchmiererBrian W. Carlson
    • C08L3302
    • C09D133/00C08L33/00C08L63/00C09D135/06C09D167/02C08L2666/02C08L2666/04C08L2666/18
    • A thermosetting weatherable powder coating composition applyable to a temperature sensitive substrate by means of electrostatic spray or fluidized bed, and curable at low temperature to form a textured surface to hide irregularities on the surface of the underlying substrate. The powder coating composition includes a hardener with a functionality of 2 or greater capable of reacting with an acid or anhydride functional group, a polymeric coreactant with a functionality of 2 or greater capable of reacting with the hardener, a carboxylic acid functional polyester and optionally, a catalyst, but no texturing agent. The polymeric coreactant is made by polymerizing an ethylenically unsaturated monomer and at least one carboxyl acid functional ethylenically unsaturated monomer or anhydride functional ethylenically unsaturated monomer, and mixtures thereof.
    • 一种热固性耐候性粉末涂料组合物,其通过静电喷雾或流化床可应用于温度敏感的基材,并在低温下可固化以形成纹理表面,以隐藏下面的基底表面上的不规则性。 该粉末涂料组合物包括能够与酸或酸酐官能团反应的官能团为2或更大的官能团的硬化剂,能与硬化剂反应的官能度为2或更大的官能团的聚合共反应物,羧酸官能聚酯和任选的, 催化剂,但没有变形剂。 聚合共反应物是通过聚合烯属不饱和单体和至少一种羧酸官能的烯属不饱和单体或酸酐官能的烯属不饱和单体及其混合物来制备的。