Abstract: The invention relates to aqueous coating compositions for producing primer and/or filler layers in a multi-layer coating, in particular in vehicle coating, comprising the following components: A) at least one water-dilutable epoxy resin, B) at least one polyamine curing agent, C) optionally, at least one water-dilutable polyurethane resin, D) water and E) optionally, pigments, fillers, conventional paint additives and/or organic solvents, wherein the polyamine curing agent B) comprises: B1) 5-95% by weight of at least one amino functional compound with at least two secondary and/or primary amino groups and B2) 95-5% by weight of at least one water-dilutable (meth)acrylic copolymer, wherein the percentages by weight of components B1) and B2) are based on the solids and add up to 100% by weight.

Abstract: The invention relates to aqueous coating compositions for producing primer and/or filler layers in a multi-layer coating, in particular in vehicle coating, comprising the following components: A) at least one water-dilutable epoxy resin, B) at least one polyamine curing agent, C) optionally, at least one water-dilutable polyurethane resin, D) water and E) optionally, pigments, fillers, conventional paint additives and/or organic solvents, wherein the polyamine curing agent B) comprises: B1) 5-95% by weight of at least one amino functional compound with at least two secondary and/or primary amino groups and B2) 95-5% by weight of at least one water-dilutable (meth)acrylic copolymer, wherein the percentages by weight of components B1) and B2) are based on the solids and add up to 100% by weight.

Abstract: Aminourethane hardeners, suitable for aqueous epoxide-based coating media, otainable by the reaction ofA) aminourethanes which are obtainable by the reaction ofa) compounds comprising at least one cyclic carbonate group, andb) 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, withB) water-thinnable epoxide compounds, obtainable fromc) 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.

Abstract: Aqueous dispersion of silane-functional polyurethane resins having a number average molecular weight of 10000 to 500000 and a silicon content of 1 to 30 mmol per 100 g of resin solids obtainable by reacting(A) adducts containing NCO groups, which adducts are obtainable by reactinga) one or more compounds having at least one ionic or ionisable and/or hydrophilic nonionic group, and more than one isocyanate-reactive group withb) one or more organic diisocyanates,(B) with polyesters having an OH value of 150 to 300 mg of KOH/g and more than three OH groups per molecule, which are obtainable by reactingc) polyalcohols withd) polycarboxylic acids ande) monofatty acids(C) optionally with linear polyesters having an OH value of 40 to less than 150 mg of KOH/g, which contain no monofatty acids, and(D) with organic polyisocyanates, wherein at least a proportion of the polyisocyanates has at least one functional group R.sup.1 OSi.tbd. in whichR.sup.1 means C.sub.1 to C.sub.8 alkyl or --C(O)R.sup.2 and R.sup.2 means C.

Abstract: Aqueous coating composition, containingI) one or more amine hardeners,II) one or more water-dilutable epoxy resins,III) one or more pigments and/or fillers andIV) water and optionally one or more solvents and/or conventional lacquer additives,wherein the composition of the coating composition is selected in such a way that a hardened free film formed from the coating composition with a coat thickness between 30 and 80 .mu.m has a storage modulus E' of 10.sup.8 Pa to 5.times.10.sup.9 Pa in a temperature range from -50.degree. C. to 150.degree. C.