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    Chip resistant polyurethane coating
    4.
    发明授权
    Chip resistant polyurethane coating 失效
    耐芯片聚氨酯涂层

    公开(公告)号：US5250650A

    公开(公告)日：1993-10-05

    申请号：US858822

    申请日：1992-03-27

    申请人： Leon N. Boretzky ,  Kurt E. Best ,  David C. McClurg ,  Angela I. Wallace

    发明人： Leon N. Boretzky ,  Kurt E. Best ,  David C. McClurg ,  Angela I. Wallace

    IPC分类号： C08G18/66 ,  C08G18/72 ,  C09D175/12 ,  C08G18/70

    CPC分类号： C08G18/6618 ,  C08G18/721 ,  C09D175/12

    摘要： A polyurethane coating which is chip resistant and resistant to chemical decontamination treatments which is made by reacting one component made up of isocyanate-reactive materials and a second isocyanate component. The first component includes an aromatic polyamine (preferably an aromatic diamine) and a hydroxyl terminated polyether or polyester in amounts such that the equivalent ratio of amine to hydroxyl groups is from about 80:20 to about 97:3. The second isocyanate component includes an aromatic polyisocyanate or a prepolymer of an aromatic polyisocyanate and a polyisocyanate adduct formed from either toluene diisocyanate or an aliphatic polyisocyanate in amounts such that the ratio of aromatic polyisocyanate to polyisocyanate adduct is in the range of from about 50:50 to about 75:25. Each of these components is combined, preferably in the presence of a solvent in quantities such that the equivalent ratio of isocyanate groups to isocyanate-reactive groups is in the range of from about 1.1 to about 1.0. The components may be reacted at ambient temperature. The coating material formed by this reaction is particularly useful in coating vehicles such as automobiles.

    摘要翻译： 一种聚氨酯涂层，其抗碎屑和抗化学去污处理，其通过使由异氰酸酯反应性材料和第二异氰酸酯组分组成的一种组分反应而制成。 第一组分包括芳族多胺（优选芳族二胺）和羟基封端的聚醚或聚酯，其量使得胺与羟基的当量比为约80:20至约97:3。 第二异氰酸酯组分包括芳族多异氰酸酯或芳族多异氰酸酯的预聚物和由甲苯二异氰酸酯或脂族多异氰酸酯形成的多异氰酸酯加合物，其量使得芳族多异氰酸酯与多异氰酸酯加合物的比率为约50:50 至75:25。 这些组分中的每一种优选在溶剂存在下进行组合，其量使得异氰酸酯基与异氰酸酯反应性基团的当量比在约1.1至约1.0的范围内。 组分可以在环境温度下反应。 通过该反应形成的涂料特别适用于汽车等涂装车辆。