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    • 14. 发明申请
    • MODIFIED AMINOPLAST CROSSLINKERS AND POWDER COATING COMPOSITIONS CONTAINING SUCH CROSSLINKERS
    • 改性氨基酸交联剂和含这种交联剂的粉末涂料组合物
    • WO2003011934A1
    • 2003-02-13
    • PCT/US2002/023074
    • 2002-07-22
    • PPG INDUSTRIES OHIO, INC.
    • AMBROSE, Ronald R.CHASSER, Anthony M.HU, Shengkui
    • C08G12/42
    • C08G12/42C08G12/428C08G2150/20C08L61/28C08L61/32C09D161/32Y10T428/31725
    • A crosslinking agent is provided which is an ungelled reaction product of (a) an aminoplast resin and (b) a compound having active hydrogen groups reactive with the aminoplast resin (a) such that the crosslinking agent is essentially free of functional groups reactive with aminoplast resin and has a glass transition temperature of at least 10°C. Also provided is a method for preparing the crosslinking agent. Further provided is a curable powder coating composition including (A) a polymer having a glass transition temperature of at least 30°C containing reactive functional groups and (B) the previously described crosslinking agent. Additionally provided is a multilayer composite coating composition including a base coat deposited from a film-forming composition and a top coat over the base coat deposited from the previously described powder coating composition. Coated substrates are also provided.
    • 提供了一种交联剂,其是(a)氨基塑料树脂和(b)具有与氨基塑料树脂(a)反应的活性氢基团的化合物的未凝胶化反应产物,使得交联剂基本上不含与氨基塑料反应的官能团 树脂,玻璃化转变温度至少为10℃。还提供了制备交联剂的方法。 进一步提供一种可固化粉末涂料组合物,其包含(A)具有至少30℃的含有反应性官能团的玻璃化转变温度的聚合物和(B)前述交联剂。 另外提供了一种多层复合涂料组合物,其包含从成膜组合物沉积的底涂层和由前述粉末涂料组合物沉积的底涂层上的顶涂层。 还提供涂覆的基材。