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    • 7. 发明授权
    • Process for coating thermoplastic substrates with a coating composition containing a non-aggressive solvent
    • 用含有非腐蚀性溶剂的涂料组合物涂覆热塑性基材的方法
    • US06436478B2
    • 2002-08-20
    • US09753880
    • 2001-01-03
    • James William O'Neil
    • James William O'Neil
    • B05D302
    • C08J3/095C08G18/2885C08G18/4202C08G18/4277C08G18/5015C08G18/773C08J7/047C08J2375/04C08J2475/00C09D175/06Y10T428/31547
    • A process for coating a thermoplastic substrate which comprises applying a solvent based coating composition to the substrate and curing the coating composition at ambient temperature to 125° C. to form a uniform smooth film on the substrate; wherein the coating composition contains about 45-80% by weight of a film forming binder and 20-55% by weight of an organic liquid carrier; wherein the binder contains (A) 40-90% by weight, based on the weight of the binder, of a polymer selected from the following: acrylic polyol, polyester polyol, polyether polyol or a polyurethane polyol; and (B) 10-60% by weight, based on the weight of the binder, of an organic polyisocyanate crosslinking agent; and wherein the organic liquid carrier used in the coating composition comprises at least 50% by weight, based on the weight of the organic liquid carrier used in the coating composition, of tertiary butyl acetate; the process of this invention also can be used to apply lacquers, i.e., coating composition that do not contain a crosslinking agent such as a polyisocyanate.
    • 一种用于涂覆热塑性基材的方法,其包括将溶剂基涂料组合物施加到所述基材上并在环境温度至125℃下固化所述涂料组合物以在所述基材上形成均匀的光滑膜;其中所述涂料组合物含有约45-80 重量%的成膜粘合剂和20-55%重量的有机液体载体; 其中所述粘合剂含有(A)40-90重量%,基于粘合剂的重量,选自以下的聚合物:丙烯酸多元醇,聚酯多元醇,聚醚多元醇或聚氨酯多元醇; 和(B)10-60重量%,基于粘合剂的重量;有机多异氰酸酯交联剂; 并且其中在涂料组合物中使用的有机液体载体中,基于涂料组合物中使用的有机液体载体的重量,包含至少50重量%的乙酸叔丁酯; 本发明的方法也可用于涂漆,即不含交联剂如多异氰酸酯的涂料组合物。