Abstract: Process for the anodic electro-dipcoating of conducting surfaces by dipping in an aqueous anodic electro-dipcoating bath and connecting up as the anode, in which an aqueous anodic electro-dipcoating bath is used that contains 1 to 15 wt. %, referred to the binder solids of the electro-dipcoating bath, of one or more phosphoric acid epoxy esters and/or phosphonic acid epoxy esters that have been produced in the presence of alcohols.

Abstract: The invention is directed to hydrophilic sagging control agents comprising at least one urea group and to aqueous coating compositions containing those hydrophilic sagging control agents. The sagging control agents are obtained by reacting A) at least one hydrophilic polyisocyanate with B) at least one amino-functional compound selected from a group consisting of an amine with at least one primary amino group and at least one hydroxyl group, having the at least one primary amino group on a primary carbon atom, an amino ether with at least one primary amino group, having the at least one primary amino group on a primary carbon atom and mixtures thereof.

Abstract: The invention is directed to aqueous compositions of sagging control agents comprising at least one urea groups containing sagging control agent and water, wherein the sagging control agents are obtained by reacting in an aqueous phase A) at least one hydrophilic polyisocyanate with B) at least one amino-functional compound selected from a group consisting of an amine with at least one primary amino group and at least one hydroxyl group, having the at least one primary amino group on a primary carbon atom, an amino ether with at least one primary amino group, having the at least one primary amino group on a primary carbon atom and mixtures thereof. The invention is also directed to coating compositions containing the aqueous compositions of sagging control agents.

Abstract: Aqueous electrophoretic lacquer capable of being deposited cataphoretically, containing A) an aqueous dispersion of cationically modified polyurethane (meth)acrylates (a1) with terminal, ethylenically unsaturated (meth)acrylic double bonds, and reactive thinner (a2) with at least two ethylenically unsaturated (meth)acrylic double bonds, the (meth)acrylic double bonds of the mixture of (a1) and (a2) corresponding to a bromine number of 20 to 150 g bromine/100 g solids, and B) photoinitiators and optionally free-radical initiators capable of thermal activation, the terminal, ethylenically unsaturated (meth)acrylic double bonds of the polyurethane (meth)acrylates being bonded with the anionically modified polyurethane prepolymer via urethane, urea, amide or ester groups, and optionally conventional auxiliary substances and additives, pigments and/or fillers.

Abstract: Aqueous binders containing 0.2 to 7 wt-% of layered silicate, relative to binder solids content, obtainable by converting a homogeneous mixture of layered silicate and non-aqueous binder (precursor) into the aqueous phase by mixing with water and, in the case of a binder precursor, concluding synthesis of the binder in the aqueous phase.

Abstract: Aqueous binder dispersion which is suitable for the preparation of coating compositions for multilayer lacquerings and is based on polyurethane resins, which can be (meth)acrylated, the optionally (meth)acrylated polyurethane dispersion particles comprising 0.5 to 5 wt. %, based on their solids content, of water-insoluble cellulose esters.

Abstract: Aqueous binders containing 0.2 to 7 wt-% of layered silicate, relative to binder solids content, obtainable by converting a homogeneous mixture of layered silicate and non-aqueous binder (precursor) into the aqueous phase by mixing with water and, in the case of a binder precursor, concluding synthesis of the binder in the aqueous phase.

Abstract: Aqueous electrophoretic lacquer capable of being deposited cataphoretically, containing

Abstract: Water-dilutable binder composition containing one or more water-dilutable hydroxy-functional polyurethane urea paste resins having a urea group content (calculated as —NHCONH—) of from 10 to 300 mmol, a urethane group content (calculated as —NHCOO—) of from 20 to 300 mmol, in each case in 100 g of solid resin, an OH number of from 20 to 250, an acid number of from 15 to 80 and a molar mass Mn of from 1000 to 20,000, obtainable by I) preparing an NCO-group-containing polyurethane prepolymer by reacting a1) hydroxy-functional compounds having a molar mass (Mn) of from 360 to 8000 with a2) polyisocyanates and a3) compounds having at least one group that is able to react with isocyanates and at least one ionic group, II) subsequently reacting the polyurethane prepolymer with a4) hydroxy-functional monoamines and, optionally, polyols, and III) neutralising groups that can be converted into ionic groups, and from 2.0 to 25 wt.

Abstract: Aqueous, anodically precipitable electrodeposition lacquer, containing A) an aqueous dispersion consisting of anionically modified polyurethane (meth)acrylates (a1) having terminal, ethylenically unsaturated (meth)acrylic double bonds, and reactive thinners (a2) having at least two ethylenically unsaturated (meth)acrylic double bonds, whereby the (meth)acrylic double bonds from the mixture comprising (a1) and (a2) correspond to a bromine number of 20 to 150 g bromine/100 g solids, and B) optionally photo-initiators and/or optionally thermally activable radical initiators, whereby the terminal ethylenically unsaturated (meth)acrylic double bonds from the polyurethane (meth)acrylates are bonded to the anionically modified polyurethane prepolymer via urethane, urea, amide or ester groups, and optionally conventional auxiliary substances and additives, pigments and/or fillers.

Abstract: Use of solid, finely divided urea compounds to prevent edge migration when stoving electrophoretically deposited electrodeposition lacquers, and electrodeposition lacquers with a content of 0.1 to 5 wt. % of urea compound, related to resin solids.

Abstract: Process for the anodic electro-dipcoating of conducting surfaces by dipping in an aqueous anodic electro-dipcoating bath and connecting up as the anode, in which an aqueous anodic electro-dipcoating bath is used that contains 1 to 15 wt. %, referred to the binder solids of the electro-dipcoating bath, of one or more phosphoric acid epoxy esters and/or phosphonic acid epoxy esters that have been produced in the presence of alcohols.

Abstract: Aqueous coating agents suitable for multi-layered finishes containing an aqueous binder dispersion based on polyurethane/polymer hybrid polymers with a ratio by weight of polyurethane fraction to polymer fraction of 0.1:1 to 50:1, with a hydroxyl value of 0 to 150 mg KOH/g, an acid value of 1.5 to 60 mg KOH/g, and a concentration of 0.5 to 300 mmol of silicon per 100 g of solid resin in the form of siloxane bridges (—Si—O—Si—) incorporated into the polyurethane fraction and/or in the form of silanol groups bonded to the polyurethane fraction, obtainable by polymerization of olefinically unsaturated monomers in the presence of polyurethane prepolymers which do not contain olefinic double bonds.

Abstract: An aqueous surface coating agent containing A) an amine component consisting of aminourethanes Al), which are obtainable by reacting compounds with at least one cyclic carbonate group with amines with at least one primary amine group, wherein the ratio of the number of cyclic carbonate groups to the number of primary amine groups is 1:10 to 1:1.1, and which may be reacted with hydrophilic water-dilutable epoxide compounds A2), wherein the ratio of the number of all the amine hydrogen atoms in Al) to the epoxide groups in A2) is 2:1 to 20:1, and B) an epoxide component consisting of urethane group-containing epoxide compounds which are obtainable by reacting one or more epoxide compounds c) with polyisocyanates d), wherein the polyisocyanates are used in an amount of 0.1 to 50 wt. %, with respect to the amount of epoxide compound.

Abstract: A pigment paste containing water-dilutable hydroxy-functional polyurethaneurea paste resins with a urea group content (calculated as —NHCONH—) of 10 to 300 mmol, a urethane group content (calculated as —NHCOO—) of 20 to 300 mmol, each per 100 g of solid resin, an OH value of 20 to 250 mg KOH/g, an acid value of 15 to 80 and a molecular weight Mn of 1000 to 20000 obtainable by I) preparing a NCO group-containing polyurethane prepolymer by reacting a1) hydroxy-functional compounds with a molecular weight (Mn) of 360 to 8000 with a2) polyisocyanates and a3) compounds with at least one group which can react with isocyanate and at least one ionic group, II) subsequent reaction of the prepolymer with a4) hydroxy-functional monoamines and optionally polyols and III) neutralisation of groups which can be converted into ionic groups.

Abstract: A process for multi-layer coating by application of a base coat layer of a water-borne base coat to a substrate and subsequent application of a clear coat layer of a powder clear coat, followed by joint baking of both coating layers, wherein said water-borne base coat contains an effective amount, preferably 0.5 to 10 wt. %, of one or more water-insoluble cellulose esters, largely avoids the formation of blisters in the powder clear coat layer.

Abstract: Water-borne base coats, the resin solid of which contain 40 to 90 wt-% of a water-dilutable polyester binder, 0 to 50 wt-% of one or more additional binders, 0 to 20 wt-% of one or more paste resins and 10 to 40 wt-% of one or more cross-linking agents, wherein the water-dilutable polyester binder has a weight average molecular mass of 5000 to 50000, an acid value of 10 to 50 mg KOH/g, a hydroxyl value of 30 to 100 mg KOH/g and an average hydroxyl-functionality of 2 to 3 and consists of 5 to 25 wt-% of structural units —O—R—O— derived from one or more macrodiols having a hydroxyl value of 25 to 120 mg KOH/g, wherein R represents residues located between the terminal hydroxyl groups of the one or more macrodiols, are suitable for preparing water-borne base coat/clear coat-two-layer coatings, in particular water-borne base coat/powder clear coat two-layer coatings.

Abstract: A method for anodic electro-dip lacquer coating, wherein coating medium which is consumed in an anodic electro-dip bath is compensated for by an under-neutralised anodic replenishment material, wherein the replenishment material comprises A) a pigment-free aqueous binder vehicle component with a solids content of 40 to 70% by weight, an MEQ value of 15 to 40 and a content of organic solvent of ≦0.5% by weight, and B) a pigment-containing aqueous paste resin component with a solids content of 60 to 75% by weight, an MEQ value of 5 to 15 and a content of organic solvent of ≦1.0 % by weight, wherein A) and B) are present in a ratio by weight of 1:1 to 4:1 and the mixture of A) and B) has a solids content of 45 to 73% by weight, a solvent content of ≦0.75% by weight and an MEQ value which is 50 to 70% lower than the MEQ value of the electro-dip bath.

Abstract: Aqueous dispersions of modified epoxy resins with a urethane and a urea group content of 5-250 mmol, based on 100 g solid content of the dispersion, containing one or more modified epoxy resins A) having an epoxy equivalent weight of 250-10,000, whereby the modified epoxy resins A) are the reaction product of A1) 43,0-86,0 wt-% of one or more epoxy compounds having at least 2 epoxy groups per molecule and an epoxy equivalent weight of 100 to 2000, A2) 10,0-25,0 wt-% of one or more aromatic polyols, A3) 2,0-12,0 wt-% of one or more aliphatic polyols and A4) 2,0-20,0 wt-% of one or more polyisocyanates.

Abstract: This invention relates to a process for the production of a multilayer lacquer coating on a substrate having an autophoretically coatable, metallic surface, in which a first priming coat of an autophoretically depositable coating composition is autophoretically deposited and then stoved and one or more subsequent coats are then applied by spraying, wherein the autophoretically depositable coating composition contains one or more constituents having an adhesion promoting action and/or wherein before one or more further coats are applied by spraying, the stoved priming layer produced by autophoretic deposition is physically and/or chemically treated and/or provided with an adhesion promoting coat.