COATING COMPOSITIONS WITH HIGH SCRATCH RESISTANCE AND WEATHERING STABILITY
    3.
    发明申请
    COATING COMPOSITIONS WITH HIGH SCRATCH RESISTANCE AND WEATHERING STABILITY 审中-公开
    具有高耐蚀性和耐候性的涂料组合物

    公开(公告)号:US20100015344A1

    公开(公告)日:2010-01-21

    申请号:US12519466

    申请日:2007-12-19

    IPC分类号: B05D1/36 C09D175/00

    摘要: Disclosed are coating compositions comprising (a) at least one hydroxyl-containing compound (A), (b) at least one compound (B) having free and/or blocked isocyanate groups, and (c) at least one catalyst (D) for the crosslinking of silane groups, where (i) one or more constituents of the coating composition contain hydrolyzable silane groups and (iii) the coating composition can be finally cured to a coating which has statistically distributed regions of an Si—O—Si network. The finally cured coating obtained from the coating composition has a post-crosslinking index (PCI) of less than 2, wherein (PCI) is defined as the ratio of the storage modulus E′(200) at 200° C. to the minimum of the storage modulus E′(min) at a temperature above the measured glass transition temperature Tg.

    摘要翻译: 公开了包含(a)至少一种含羟基的化合物(A),(b)至少一种具有游离和/或封闭的异氰酸酯基团的化合物(B)的涂料组合物,和(c)至少一种用于 硅烷基团的交联,其中(i)涂料组合物中的一种或多种组分含有可水解的硅烷基团,和(iii)涂料组合物可最终固化成具有统计分布的Si-O-Si网络区域的涂层。 从涂料组合物得到的最终固化涂层具有小于2的后交联指数(PCI),其中(PCI)定义为200℃下的储能模量E'(200)与最低 在高于测量的玻璃化转变温度Tg的温度下的储能模量E'(min)。