Abstract: A water-dispersible polyurethane resin comprising building blocks derived from polyisocyanates A, polyols B having a number-average molar mass Mn of at least 400 g/mol, where appropriate, low molar mass polyols C with Mn below 400 g/mol, compounds D which possess at least two groups which are reactive toward isocyanate groups and at least one group which is capable of forming anions, low molar mass polyols E which in relation to isocyanate groups carry no further reactive groups, compounds F, which are monofunctional toward isocyanates or contain active hydrogen of different reactivity and are different from the compounds E and also, where appropriate, compounds G, which are different from B, C, D, E and F and contain at least two groups which are reactive with NCO groups, wherein the number-average molar mass Mn of the polyurethane resin is at least 10 kg/mol, its weight-average molar mass Mw is at least 20 kg/mol, and its acid number is from 20 to 50 mg/g; a process for its preparation; and its use as a bin

Abstract: A method of use of copolymers containing fluoro groups and hydroxyl groups as additives in powder coating materials, comprising mixing these component with powder coatings resins, the copolymers comprising units of the following monomers: olefinically unsaturated monomers having from 5 to 40 carbon atoms, at least one hydroxyl group, and at least one free-radically polymerizable C?C double bond, alkyl esters of monoolefinically unsaturated monocarboxylic acids or dialkyl esters of olefinically unsaturated dicarboxylic acids or mixtures thereof, and (per)fluoroalkyl esters of said carboxylic acids, and powder coating materials which comprise these additives for the purpose of improving the flow properties and the surface.

Abstract: Aqueous curing agents for epoxy resin dispersions comprising mixtures, adducts and/or salts of partly esterified organic phosphoric acids A1 or partly esterified phosphonic acids A2 with organic amines B selected from the group consisting of epoxide-amine adducts B1, Mannich bases B2, polyaminoamides B3, and condensation products B4 of diamines or polyamines B42 with di- or polyhydroxyaromatics B41, their preparation and a method of use comprising mixing thereof with aqueous epoxy resin dispersions in particular for coating metals as corrosion protection

Abstract: Hydroxyl group-containing polymers which comprise moieties of polyesters and of addition polymers formed from olefinically unsaturated monomers, the polyesters containing units from aliphatic cyclic or polycyclic dihydroxy or polyhydroxy compounds or diepoxy or polyepoxy compounds A and aliphatic cyclic dicarboxylic or polycarboxylic acids B and the addition polymers containing units from olefinically unsaturated alkyl esters G of aliphatic, linear, branched or cyclic olefinically unsaturated monocarboxylic and/or dicarboxylic acids, olefinically unsaturated hydroxyalkyl esters H of one of the acids specified under G, at least one further olefinically unsaturated monomer I selected from vinylaromatics, vinyl esters, halogenated monomers, unsaturated nitriles, amides or diamides of unsaturated monocarboxylic acids, vinyl ethers, and allyl ethers, and also, where appropriate, carboxylic acids J, selected from the monocarboxylic acids specified under G or dicarboxylic acids specified under G in unesterified or m

Abstract: Coating composition especially for preparing automotive surfacers, comprising a condensation product A of a carboxyl-containing resin A1 and a hydroxyl-containing resin A2, a curing agent C which becomes active only at an elevated temperature of at least 80° C., and a high molecular mass polyurethane B.

Abstract: Binders for aqueous corrosion protection systems, comprising products A′ABC of reaction of epoxy resins, fatty acids, and amines, having a number average molar mass Mn of at least 5000 g/mol, obtained by reacting epoxide compounds A′ containing at least two epoxide groups per molecule and reaction products ABC of epoxide compounds A, fatty acids B, and amines C, wherein, where appropriate, the epoxide compounds A′ and/or the epoxide compounds A have been modified prior to further reaction, in whole or in part, by reaction with compounds D containing at least one acid group or hydroxyl group reactive toward epoxide groups, and wherein, where appropriate, the amines C have been modified prior to further reaction, in whole or in part, by reaction with aliphatic or aromatic monoepoxide compounds A″ or mixtures thereof.

Abstract: Water-dilutable binders which are self-crosslinking at room temperature, comprising reaction products ABF with epoxy-amine adducts A and formaldehyde resin formers B selected from phenols B1, (substituted) ureas B2, melamine B3, guanamines B4, and mixtures of said resin formers, with formaldehyde F or compounds which give off formaldehyde under the reaction conditions, may be formulated, following at least partial neutralization, to give aqueous coating materials which give coatings affording outstanding corrosion protection.

Abstract: Water-dilutable, cationically stabilized epoxy resins ZYX are obtained by reacting, in the first stage, aromatic or aliphatic epoxide compounds Z with aliphatic amines Y to form epoxy-amine adducts ZY which are neutralized and then in aqueous dispersion are reacted in a second stage with a further epoxy resin X. The resins ZYX may be formulated without additional curatives to give aqueous coating materials which exhibit a good corrosion protection effect.

Abstract: Water dilutable amine curing agents for aqueous epoxy resin dispersions, comprising a combination of an epoxide-amine adduct with an emulsifier, the epoxide-amine adduct being obtainable by reacting a polyepoxide with a reaction product of an amine and an epoxide component or an amine and subsequent reaction with an epoxide component, the amount of amine being chosen such that the number of nitrogen-attached hydrogen atoms the number of epoxide groups by a factor of from 2 to 10, and the emulsifier being obtainable by reacting diepoxides or polyepoxides with compounds that are at least difunctional with respect to epoxides, optionally with compounds D that are monofunctional with respect to epoxides, and with amines G which contain at least one tertiary and at least one primary or at least two secondary amino group(s).

Abstract: Aqueous binder mixtures comprising a water-dilutable resin and a water-miscible hydroxy urethane have an increased mass fraction of solids and may be formulated in combination with curatives which are active at elevated temperature to give automobile primer-surfacer materials.

Abstract: Low molar mass polyester polyols having a weight average molar mass Mw of up to 3500 g/mol, hydroxyl numbers of from 80 to 280 mg/g and acid numbers of from 5 to 40 mg/g, comprising structural units derived from aliphatic monocyclic or polycyclic compounds containing at least two hydroxyl and/or epoxide groups and at least one heteroatom, aliphatic acyclic or cyclic polyhydroxy compounds containing three or more hydroxyl groups per molecule, linear or branched aliphatic dihydroxy compounds and aliphatic cyclic polycarboxylic acids, alone or in a mixture with low molar mass acrylate copolymers, may be processed to give coating materials which dry rapidly, and result in defect-free surfaces.

Abstract: Aqueous binders comprising organic bismuth compounds and reaction products, having a number-average molar mass Mn of at least 5000 g/mol, of epoxy resins, optionally fatty acids and amines are obtained by reacting epoxide compounds containing at least two epoxide groups per molecule and reaction products of epoxide compounds, optionally fatty acids and amines, and are suitable as binders for aqueous systems for corrosion protection.

Abstract: Coating composition especially for preparing automotive surfacers, comprising a condensation product A of a carboxyl group-containing resin A1 and a hydroxyl group-containing resin A2, and a curing agent C, which becomes active only at elevated temperature of at least 80° C., and comprises a mixture of a water-insoluble blocked isocyanate C1 and a hydrophilically modified isocyanate C2.

Abstract: Aqueous self-crosslinking copolymer dispersions ABC obtainable by free-radically initiated copolymerization in the first stage of a monomer mixture A comprising olefinically unsaturated monomers A1 having carbonyl groups, unsaturated carboxylic acids or monoesters of unsaturated dicarboxylic acids A2, monomers A3 selected from vinylaromatic compounds, n-butyl methacrylate and also alkyl esters of unsaturated carboxylic acids or dialkyl esters of unsaturated dicarboxylic acids, esters A4 selected from alkyl esters of unsaturated carboxylic acids of dialkyl esters of unsaturated dicarboxylic acids, and other free-radically polymerizable monomers A5, and subsequent addition of a second monomer mixture B and further polymerization in the second stage, the mixture B comprising olefinically unsaturated monomers B1 corresponding to A1, esters B2 corresponding to A4, and monomers B3 corresponding to A5, and subsequently adding compounds C having hydrazine or hydrazide groups.

Abstract: Aqueous two-component binder systems, its first component comprising a water-soluble polyester AB and its second component comprising a blocked polyfunctional isocyanate C, where the blocking agent C2 is selected from the group consisting of primary alcohols C21 having 3 to 10 carbon atoms, in which the carbon atom adjacent to the hydroxymethylene group carries a double bond, oximes C22 of linear, branched or cyclic aliphatic ketones having 3 to 15 carbon atoms, CH-acidic compounds C23, in which the carbon atom carrying the active hydrogen carries at least one further group selected from R1—CO—, R2—O—CO—, —NO2 and R3—SO2—, R1, R2 and R3 independently of one another may be linear, branched or cyclic alkyl groups having 1 to 18 carbon atoms or aryl groups having from 5 to 15 carbon atoms, and NH-acidic compounds C24.

Abstract: Water-dilutable brushing paints based on water-soluble alkyd resins rendered water-soluble through neutralization of methacrylic acid groups thereon are described. The brushing paints have favorable applicational properties, especially with regard to wet-edge time and brushability.

Abstract: A water-soluble or water-dispersible polyester B useful as emulsifier for aqueous emulsions of alkyd resins A, wherein the polyester B is obtainable by reacting, under polycondensation conditions, polyhydroxyl components Ba from the class of the sugar alcohols having more than 4 carbon atoms and at least five hydroxyl groups per molecule, alkoxypolyethylene glycols Bb having 1 to 4 carbon atoms in the alkyl radical and a number-average molar mass Mn of from 500 to 2000 g/mol, cycloaliphatic dicarboxylic acids Bc and unsaturated or saturated fatty acids Bd having 10 to 22 carbon atoms, a process for its preparation, and alkyd resin emulsions prepared therewith.

Abstract: A base-neutralized, water-diluted coating comprises (A) a polyhydroxyl-functional resin of an acrylate resin or an oil-free polyester containing urethane groups, (B) an amino resin partially etherified with an alcohol, (C) a basic neutralizing agent, (D) water, and (E) a water-insoluble crosslinking catalyst of a strong organic or inorganic acid such as p-toluenesulfonic acid blocked with a monoepoxide, diepoxide or lactone.

Abstract: Water-dilutable polyvinylbutyral dispersions obtainable by a two-stage reaction in the first stage of which at least one tertiary alkanolamine A and at least one diisocyanate B are reacted to the theoretically calculated NCO content and the amounts of components A and B are chosen such that the amount of substance of the diisocyanates B is from 0.8 to 1.3 times the amount of substance of the reactive hydroxyl groups in A and thereafter in the second stage a polyvinylbutyral C dissolved in a solvent which is inert towards isocyanates is reacted with the adduct AB from the first step to form the product ABC until all of the isocyanate groups have undergone complete reaction, the number of hydroxyl groups in C being at least ten times the number of isocyanate groups in the reaction product AB.

Abstract: Storage-stable polyurethane dispersions preparable by reacting polydienes A which carry at least two isocyanate-reactive groups, polyols B which carry at least one acid group, polyfunctional isocyanates C and chain extenders D, wherein the acid groups of the polyols B are neutralized to a fraction of from 60 to 95%, processes for preparing them, and their use for producing elastic coatings.