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    • 46. 发明申请
    • Polyisocyanate mixtures, a process for their preparation and their use in coating compositions
    • 多异氰酸酯混合物,其制备方法及其在涂料组合物中的应用
    • US20060111539A1
    • 2006-05-25
    • US11286717
    • 2005-11-23
    • Christian WamprechtMartin MelchiorsJorg Schmitz
    • Christian WamprechtMartin MelchiorsJorg Schmitz
    • C08G18/00
    • C08G18/672C08G18/6229C08G18/6254C08G18/8116Y10T428/31551
    • The present invention relates to polyacrylate-modified polyisocyanates which are i) prepared from aromatic, araliphatic, cycloaliphatic and/or aliphatic polyisocyanates having an NCO content of 5% to 25% by weight, an NCO functionality ≧2, a viscosity measured as solvent free resin of 150 to 200,000 mPa·s at 23° C., and ii) contain at least one structural unit of the formula (I) wherein R is hydrogen or a methyl group, R1 is an optionally heteroatom-containing hydrocarbon radical and R2 is a hydrocarbon radical having at least one isocyanate group and optionally urethane, allophanate, biuret, uretdione, isocyanurate and/or iminooxadiazinedione groups and n ist a number ≧1. The present invention also relates to a process for preparing these polyisocyanates and to binder compositions containing these polyisocyanates, which may be hydrophilically modified, and a compound having NCO-reactive groups.
    • 本发明涉及聚丙烯酸酯改性的多异氰酸酯,其是i)由NCO含量为5重量%至25重量%,NCO官能度> = 2的芳族,芳脂族,脂环族和/或脂族多异氰酸酯制备的, 在23℃下为150至200,000mPa.s的游离树脂,和ii)含有至少一种式(I)的结构单元,其中R是氢或甲基,R 1是 任选含杂原子的烃基和R 2是具有至少一个异氰酸酯基团和任选的氨基甲酸酯,脲基甲酸酯,缩二脲,脲二酮,异氰脲酸酯和/或亚氨基恶二嗪二酮基团的烃基,并且n = 1 。 本发明还涉及一种制备这些多异氰酸酯的方法和含有可以亲水改性的这些多异氰酸酯的粘合剂组合物和具有NCO-反应性基团的化合物。