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    • 4. 发明授权
    • Low VOC, moisture curable, two-component coating compositions based on
organic polyisocyanates
    • 基于有机多异氰酸酯的低VOC,可湿固化的双组分涂料组合物
    • US5506328A
    • 1996-04-09
    • US64996
    • 1993-05-24
    • Kiran B. ChandaliaMichael J. MorganJames M. O'ConnorStephen L. Goldstein
    • Kiran B. ChandaliaMichael J. MorganJames M. O'ConnorStephen L. Goldstein
    • C08G18/18C08G18/30C09D175/00B05D3/04C08K5/00
    • C09D175/00C08G18/1825C08G18/302C08G18/307
    • This invention relates to a process for coating a substrate comprising contacting the substrate with a low volatile organics, moisture curable, two-component coating composition comprising an admixture of an A-side and a B-side, said A-side comprising an aliphatic polyisocyanate having an isocyanate index relative to the number of isocyanate-reactive groups in said coating composition of at least about 200, preferably at least about 300, more preferably at least about 500, said B-side comprising a tertiary amine catalyst and optionally an isocyanate-reactive compound selected from the group consisting of monoahls, polyols, imines, oxazolidines, and combinations thereof, said coating composition optionally containing a solvent in an amount of less than about 45%, based upon the weight of the polyisocyanate in said coating composition, said coating composition having a viscosity as measured by ZAHN cup 2 of less than about 200 seconds, said composition being essentially free of any volatile mono- and di-isocyanates, and said composition being moisture curable upon exposure to atmospheric moisture. Also claimed is the coating composition itself.
    • 本发明涉及一种涂覆基质的方法,包括使基底与低挥发性有机物,可湿固化的双组分涂料组合物接触,该组合物包含A侧和B侧的混合物,所述A侧包含脂族多异氰酸酯 具有相对于所述涂料组合物中的异氰酸酯反应性基团数量的异氰酸酯指数为至少约200,优选至少约300,更优选至少约500,所述B侧包含叔胺催化剂和任选的异氰酸酯 - 选自单酚,多元醇,亚胺,恶唑烷及其组合的反应性化合物,所述涂料组合物任选地含有基于所述涂料组合物中多异氰酸酯重量的小于约45%的溶剂,所述 具有通过ZAHN杯2测量的粘度小于约200秒的涂料组合物,所述组合物基本上不含任何挥发物 单一和二异氰酸酯,并且所述组合物在暴露于大气湿气时是可湿气固化的。 还要求的是涂料组合物本身。