Aminoplast-based crosslinkers and powder coating compositions containing such crosslinkers
    9.
    发明授权
    Aminoplast-based crosslinkers and powder coating compositions containing such crosslinkers 失效
    含有氨基塑料的交联剂和含有这种交联剂的粉末涂料组合物

    公开(公告)号:US06451928B1

    公开(公告)日:2002-09-17

    申请号:US09666575

    申请日:2000-09-21

    IPC分类号: C08G6391

    摘要: Provided is a crosslinking agent which is the ungelled reaction product of a polyester polyol and an aminotriazine compound having one or less non-alkylated NH bond per triazine ring. The polyester polyol is the reaction product of a cycloaliphatic polyol and a cyclic polycarboxylic acid or anhydride. The crosslinking agent is essentially free of hydroxyl functionality and has a glass transition temperature of at least 10° C. Further provided is a powder coating composition including a solid particulate film-forming mixture of a polymer containing reactive functional groups and having a Tg of at least 30° C., and the crosslinking agent. Additionally provided is a multi-layer composite coating composition having a basecoat layer deposited from a basecoat film-forming composition and a topcoat over the basecoat deposited from the previously described powder coating composition. Coated substrates are also provided.

    摘要翻译: 提供了一种交联剂,其是聚酯多元醇和具有每个三嗪环具有一个或多个非烷基化NH键的氨基三嗪化合物的未凝胶化反应产物。 聚酯多元醇是脂环族多元醇与环状多元羧酸或酸酐的反应产物。 交联剂基本上不含羟基官能团并且具有至少10℃的玻璃化转变温度。还提供了一种粉末涂料组合物,其包含含有反应性官能团并且具有Tg的Tg的聚合物的固体颗粒成膜混合物 至少30℃,和交联剂。 另外提供了一种多层复合涂料组合物,其具有从底涂层成膜组合物沉积的底涂层和在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。