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    • 11. 发明授权
    • Polyisocyanates containing acylurea groups, a process for their production and their use
    • 含有酰脲基团的聚异氰酸酯,其制备方法及其用途
    • US07071353B2
    • 2006-07-04
    • US10085514
    • 2002-02-28
    • Christoph GürtlerMartin Brahm
    • Christoph GürtlerMartin Brahm
    • C07C249/00
    • C08G18/222C08G18/341C08G18/7818
    • The present invention relates to a process for preparing polyisocyanates containing acylurea groups by reacting isocyanates corresponding to formula (I) R—(NCO)n,  (I) wherein R represents an n-valent linear or branched aliphatic group or cycloaliphatic group having 4 to 30 carbon atoms or an aromatic group having 6 to 24 carbon atoms and n is 1, 2, 3 or 4, with aliphatic and/or aromatic carboxylic acids in the presence of a metal salt catalyst at a temperature of 20 to 220° C. The present invention also relates to the reaction products (polyisocyanates) prepared by this process and to their use as binders for polyurethane coating compositions.
    • 本发明涉及一种通过使与式(I)相应的异氰酸酯反应制备含有酰基脲基团的多异氰酸酯的方法,该方法通过使式(I)<?in-line-formula description =“In-Line Formulas”end =“lead”→R-(NCO) 其中R表示n价直链或支链的脂族基团或具有4个碳原子的脂环族基团, 至30个碳原子或具有6至24个碳原子且n为1,2,3或4的芳族基团与脂族和/或芳族羧酸在金属盐催化剂存在下在20至220℃的温度下反应 本发明还涉及通过该方法制备的反应产物(多异氰酸酯)及其作为聚氨酯涂料组合物的粘合剂的用途。