Abstract: Aqueous, low-solvent coating compositions comprising a base resin dispersion comprising of an epoxy resin, prepared by condensation of one or more epoxide compounds having at least two epoxide groups per molecule and an aromatic polyol; a dispersant comprising a condensation product of an aliphatic polyol having a weight-average molar mass (M.sub.w) of from 200 to 20,000 g/mol and an epoxide compound having at least two epoxide groups per molecule, and low molar mass, liquid, epoxy-functional compounds as diluents, and also water; an aqueous curing agent for the modified epoxy resin (I), which is suitable for curing at room temperature or at elevated temperatures (forced drying), components (I) and (II) being employed in mass fractions such that the ratio of the number of reactive epoxide groups in (I) to the number of amine hydrogen atoms in (II) is between 1:0.75 and 1:2. The coating compositions exhibit an extended pot life. They can be used to produce coatings and in water-soluble adhesives.

Abstract: Aqueous low-solvent coating compositions comprising a modified epoxy resin dispersion comprising an epoxy resin which is prepared by condensation of one or more epoxide compounds having at least two epoxide groups per molecule with an aromatic polyol; a dispersant comprising a condensation product of an aliphatic polyol and an epoxide compound having at least two epoxide groups per molecule; a diluent consisting of ethylenically unsaturated otherwise inert or, if desired, functional monomers capable of free-radical polymerization or copolymerization, and water, and also an aqueous curing agent for the modified epoxy resin (I), which is suitable for curing at room temperature or at elevated temperatures (forced drying), components (I) and (II) being employed in proportions by mass such that the ratio of the number of epoxide groups which are capable of reaction to the number of amine hydrogen atoms is between 1:0.75 and 1:2. The coating compositions can be employed to produce matt coatings and in adhesives.

Abstract: Curing agents for aqueous epoxy resin dispersions obtained by reaction of an adduct (A) of at least one polyepoxide (A.sub.1) and at least one polyalkylene polyether polyol (A.sub.2), it being possible for the adduct (A) to be modified with a secondary amine (A.sub.3) if appropriate, withI. a reaction product of an amine (B) and an epoxide (C)orII. an amine (B) and subsequent reaction with an epoxide (C),the amount of amine (B) being chosen such that the H atoms on the nitrogen are present in a 2- to 10-fold excess, based on the epoxide groups in (A).

Abstract: Curing agents for aqueous epoxy resin dispersions obtained by reaction of an adduct (A) of at least one polyepoxide (A.sub.1) and at least one polyalkylene polyether polyol (A.sub.2), it being possible for the adduct (A) to be modified with a secondary amine (A.sub.3) if appropriate, withI. a reaction product of an amine (B) and an epoxide (C)orII. an amine (B) and subsequent reaction with an epoxide (C),the amount of amine (B) being chosen such that the H atoms on the nitrogen are present in a 2- to 10-fold excess, based on the epoxide groups in (A).

Abstract: Polyol/epoxy adducts obtained by reaction of(A) an aliphatic polyol having an average molecular weight (Mw) of 200 to 2000 and(B) an epoxy compound having at least two epoxy groups per molecule and an epoxy equivalent weight of 100 to 2000,the equivalent ratio of the OH groups to the epoxy groups being 1:3.51 to 1:10, preferably 1:4 to 1:9, particularly preferably 1:45 to 1:8, and the epoxy equivalent weight of the adduct being between 150 g/eq and at least 800 g/eq, preferably between 250 g/eq and 1000 g/eq which adducts serve as nonionic emulsifiers in water-dilutable epoxy liquid resins.

Abstract: Hardeners for epoxy resins, comprising reaction products of(A) polyamidoamines that were obtained by polycondensation of (a) dicarboxylic acids containing oxyalkylene groups, or their derivatives, with (b) polyamines containing at least two amino groups capable of undergoing condensation with (a),(B) polyamines containing at least two secondary amino groups, and(C) adducts of (c) polyepoxy compounds and (d) polyalkylene polyether polyols.Epoxy resins that have been cured with these hardeners exhibit in particular a very good water resistance.