Thermally curable, thixotropic mixtures containing carbamate and/or allophanate groups
    41.
    发明申请
    Thermally curable, thixotropic mixtures containing carbamate and/or allophanate groups 审中-公开
    含有氨基甲酸酯和/或脲基甲酸酯基的热固化触变混合物

    公开(公告)号:US20050119422A1

    公开(公告)日:2005-06-02

    申请号:US10511057

    申请日:2002-04-24

    Abstract: Heat-curable thixotropic mixtures containing carbamate and/or allophanate groups, comprising (A) at least one oligomer and/or polymer selected from the group consisting of oligomers and polymers containing allophanate groups, carbamate groups, and carbamate and allophanate groups, and (B) at least one thixotropic agent selected from the group consisting of urea or urea derivatives preparable by reacting at least one amine and/or water with at least one polyisocyanate, with the proviso that the mixture in question, based on its solids, further comprises at least one silica as thixotropic agent (C), and contains the thixotropic agent (B) in an amount of from 0.1 to 5% by weight if the oligomers and polymers (A) contain no allophanate groups; processes for preparing the mixtures, and their use as coating materials, adhesives and sealing compounds.

    Abstract translation: 含有氨基甲酸酯和/或脲基甲酸酯基团的可热固化触变性混合物,包含(A)至少一种低聚物和/或聚合物,其选自含有脲基甲酸酯基团的低聚物和聚合物,氨基甲酸酯基团和氨基甲酸酯和脲基甲酸酯基团,和(B )至少一种触变剂,其选自可通过使至少一种胺和/或水与至少一种多异氰酸酯反应制备的脲或脲衍生物,条件是所述混合物基于其固体,还包含在 至少一种二氧化硅作为触变剂(C),并且如果低聚物和聚合物(A)不含脲基甲酸酯基团,则含有0.1至5重量%的触变剂(B) 制备混合物的方法及其作为涂料,粘合剂和密封剂的用途。

    Clearcoat composition with improved adhesion

    公开(公告)号:US06657007B2

    公开(公告)日:2003-12-02

    申请号:US10017442

    申请日:2001-12-14

    CPC classification number: C08F8/00 C08F2800/20 C08F2220/325

    Abstract: Clearcoat coating composition for automotive exterior coatings with improved intercoat adhesion to a subsequently applied coating layer and improved flexibility contains (a) a first vinyl copolymer prepared from a monomer mixture including no more than about 35% by weight of nonfunctional monomers that has carbamate functionality and hydroxyl functionality, at least part of the hydroxyl functionality being on monomer units including an optionally branched alkyl group having at least about six carbon atoms; (b) a second vinyl copolymer having hydroxyl functionality, preferably primary hydroxyl functionality; and (c) a curing agent component that includes at least an aminoplast curing agent and optionally a polyisocyanate curing agent. The polyisocyanate curing agent is preferably blocked with a blocking agent that volatilizes during the cure reaction, regenerating a reactive isocyanate group.

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