| 摘要 |
PCT No. PCT/EP97/03268 Sec. 371 Date May 14, 1998 Sec. 102(e) Date May 14, 1998 PCT Filed Jun. 21, 1997 PCT Pub. No. WO97/49749 PCT Pub. Date Dec. 31, 1997Aminourethane hardeners, suitable for aqueous epoxide-based coating media, otainable by the reaction of A) aminourethanes which are obtainable by the reaction of a) compounds comprising at least one cyclic carbonate group, and b) amines comprising at least one primary amino group wherein the ratio of the number of carbonate groups to that of amino groups is 1:10 to 1:1.1, with B) water-thinnable epoxide compounds, obtainable from c) polyalkylene polyethers comprising a primary and/or secondary alpha -amino group and an omega -alkyl ether or aryl ether group and/or polyatkylene polyethers comprising two primary and/or secondary alpha , omega -amino groups, each with a weight average molecular weight of 200 to 20,000, with d) epoxide compounds comprising at least two epoxide groups per molecule and an equivalent weight of 100 to 2000, wherein the ratio of the number of amino groups of component c) to the epoxide groups of component d) is 1:2 to 1:20, and the epoxide equivalent weight of the condensation products obtained from c) and d) is between 150 and 8000.
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