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    • 8. 发明授权
    • Aqueous cross-linkable binder composition and its use in the production of lacquer coatings
    • 水性交联粘合剂组合物及其在漆涂料生产中的应用
    • US06765056B2
    • 2004-07-20
    • US09928616
    • 2001-08-13
    • Klaus HobelJosephus Christiaan Van OorschotKeimpe Jan Van Den Berg
    • Klaus HobelJosephus Christiaan Van OorschotKeimpe Jan Van Den Berg
    • C08L7510
    • C08G18/83C08G18/0823C08G18/2815C08G18/6625C08G18/725C08G18/84C09D175/04
    • The aqueous-based cross-linkable binder composition comprising (A) an aqueous dispersion of an aldehyde-functional polyurethane having a number average molecular weight of more than 1,000 and an average aldehyde functionality of ≧2, which polyurethane comprises ionic and/or non-ionic dispersing groups, and (B) a low-molecular weight aldehyde-reactive cross-linker selected from the group of low-molecular weight polyamines and low-molecular weight compounds comprising at least one group of one of the formulae E1—CHR1—E2 and H—C—(E1E2E3), wherein —E1, —E2 and —E3 are independently chosen from electron-withdrawing groups such as —P(═O)—O—, —CO—, —CN, —SO2—, —NO2 and wherein R1 has the meaning of hydrogen or a hydrocarbon radical having 1 to 10 carbon atoms. Preference is given to a coating composition wherein the ionic dispersing group is an anionic dispersing group selected from the group of carboxylate, sulphonate and/or phosph(on)ate salt groups, and/or wherein for the nonionic dispersing group use is made of a C1-C4 alkoxy poly C2-C3 alkylene-oxide group in an amount between 2.5 and 20 wt. %, based on the polyurethane.
    • 所述水性可交联粘合剂组合物包含(A)数均分子量大于1,000且平均醛官能度> = 2的醛官能聚氨酯的水分散体,该聚氨酯包含离子和/或非 - - 离子分散基团,和(B)低分子量醛 - 反应性交联剂,其选自低分子量多胺和低分子量化合物,其包含至少一个式E 1之一 -CHR 1 -E 2和HC-(E 1 E 2 E 3),其中-E 1,-E 2和-E 3独立地选自 吸电子基团如-P(= O)-O-,-CO-,-CN,-SO 2 - , - NO 2,其中R 1具有氢或具有1-10个碳原子的烃基 优选一种涂料组合物,其中离子分散基团是选自羧酸盐,磺酸盐和/或磷酸(酯)盐基团的阴离子分散基团,和/或其中 非离子分散组使用的量为2.5至20重量%的C 1 -C 4烷氧基聚C 2 -C 3亚烷基氧基。 %,基于聚氨酯。