Reactive oligomers for isocyanate coatings
    6.
    发明授权
    Reactive oligomers for isocyanate coatings 有权
    异氰酸酯涂料的反应性低聚物

    公开(公告)号:US06221494B1

    公开(公告)日:2001-04-24

    申请号:US09272718

    申请日:1999-03-18

    IPC分类号: C09D17506

    摘要: The invention is directed to a two-pack solvent-based ambient curable coating composition comprising a binder of a hydroxyl and crosslinking components. The hydroxyl component includes a linear or branched cycloaliphatic moiety-containing reactive oligomer or blend of oligomers with a weight average molecular weight not exceeding 3,000, a polydispersity not exceeding about 1.7 with at least 2 hydroxyl groups, at least 1, on average, being a primary hydroxyl group. The reactive oligomer is formed by the reaction of an oligomeric acid with monofunctional epoxy. The crosslinking component includes one or more of an oligomeric crosslinker containing at least 2 isocyanate groups. The coating composition of the invention is particularly suited in automotive refinish coatings.

    摘要翻译: 本发明涉及包含羟基和交联组分的粘合剂的双组分溶剂型环境可固化涂料组合物。 羟基组分包括直链或支链的含脂环族部分的反应性低聚物或重均分子量不超过3,000的低聚物混合物,多分散性不超过约1.7,至少2个羟基,平均至少为1,为 伯羟基。 反应性低聚物通过低聚酸与单官能环氧树脂的反应形成。 交联组分包括含有至少2个异氰酸酯基团的低聚交联剂中的一种或多种。 本发明的涂料组合物特别适用于汽车修补漆。