Abstract: Aqueous dispersion adhesives of anionic polyurethanes which have high heat resistance and low activation temperature, even when employed without addition of a crosslinker. The polyurethane is the reaction product of an isocyanate terminated polyurethane prepolymer, and a chain extender. The polyurethane prepolymer is the reaction product of a polyol component and a diisocyanate component, the polyol component including:a sulfonated polyester polyol,a hydroxy carboxylic acid of the formula:(HO).sub.x R(COOH).sub.ywherein (R) represents a straight or branched, hydrocarbon radical containing 1 to 12 carbon atoms, and x and y represent values from 1 to 3, anda low molecular weight aliphatic diol having a molecular weight of from 60 to 400.

Abstract: Process for the preparation of water-dilutable urethane resins and use of the so produced urethane resins, for example, as binders for coating materials which can be crosslinked by free-radical polymerization.

Abstract: An aqueous coating composition containing at least one water-dispersible polyurethane resin containing air-drying groups and optionally further binder resins and conventional paint additives, which polyurethane resin contains structural units derived from(A) polyisocyanates,(B) polyols containing air-drying groups,(C) optionally polyols which are free of air-drying groups,(D) compounds having at least two groups which are reactive with isocyanate groups and at least one group capable of anion formation,(E) optionally monoalcohls containing air-drying groups,(F) and/or compounds which differ from (B), (C), (D) and (E) and contain at least one group which is reactive with NCO groups, which has excellent pigment compatibility and the coatings produced therefrom have good corrosion protection and good mechanical properties even in the absence of siccatives.

Abstract: A mixture containsa) water-emulsifiable polyisocyanates andb) carbonic esters or lactones as organic solvents.

Abstract: Water-emulsifiable polyisocyanates, containinga) aliphatic, cycloaliphatic or aromatic polyisocyanates andb) reaction products of the abovementioned polyisocyanates with compounds which contain at least one group ##STR1## in short called a sulfo group, and at least one isocyanate-reactive group.

Abstract: The present invention relates to a water-based coating composition suited for surface treatment of the metal sheets or plates to be used in building materials, household electric appliances, automobiles and so forth. The object of the present invention is to provide a water-based coating composition for the steel or metal coated steel surface treatment which gives coating films firmly adhering to metal plates and showing a high degree of hardening as well as excellent corrosion resistance, water resistance and weldability upon baking under low-temperature short-period conditions, has electric conductivity suited for electrodeposition coating and provides lubricating property in processing to thereby prevent powdering during processing as well as a method of forming coating films using said composition.

Abstract: Aqueous polyurethane dispersions prepared from chain extended polyurethane prepolymers which are the reaction product of a di- or polyisocyanate, a polyol component containing, in major part, a polyoxypropylene diol having an unsaturation of 0.020 meq/g or less, and a reactive dispersing aid, are suitable for preparing polyurethane films with greater softness and elasticity than similar films prepared from PTMEG, and greater tensile strength and elasticity than polyoxypropylene diols having conventional levels of unsaturation.

Abstract: Aqueous, autocrosslinking polymer dispersion binders comprising polyhydrazides and carbonyl-containing polyurethane-vinyl hybrid polymers and also, if desired, conventional additives, are useful in base coatings, aqueous coatings, adhesives and printing inks.

Abstract: The present invention relates to aqueous dispersions of polyester-polyurethanes which contain hydroxyl groups and are prepared froma) 15 to 90% by weight of one or more essentially linear, polyester polyols,b) 4 to 75% by weight of one or more essentially difunctional polyols selected from i) polycarbonates, ii) polyether polyols and iii) polyester polyols which are obtained by the hydrogenation of carboxyl groups to hydroxyl groups, the alkoxylation of carboxyl groups or the esterification of carboxyl groups using low molecular weight diols of dimeric fatty acids,c) 1 to 10% by weight of one or more components containing acid groups selected from i) hydroxycarboxylic acids, ii) amino acids, iii) aminosulphonic acids and iv) alkali salts of the acids of i), ii) and iii),d) 0 to 20% by weight of a low molecular weight component containing at least two hydroxyl and/or amino groups,e) 0 to 20% by weight of one or more hydrophilic monovalent or divalent alcohols andf) 5 to 50% by weight of a polyisocyanate compon

Abstract: A stain resistant grout composition comprises a mixture of an acrylic latex, an aliphatic urethane and a paraffin. Preferably, the composition is an aqueous composition and is a low volatile organic compound (VOC) composition.

Abstract: The present invention relates to aqueous polyurea dispersions wherein the polyureas contain 0.1 to 25% by weight, based on the weight of the polyureas, of en-urea groups (calculated as --NH--C(O)--N--, MW 57) obtained by the reaction of an isocyanate group with an aldimine group prepared from a cyclic polyamine containing (cyclo)aliphatically bound amino groups.The present invention also relates to a process for preparing these aqueous polyurea dispersions and to their use for preparing coatings.

Abstract: The electrodeposition coating composition contains a base resin and a curing agent. The curing agent contains blocked isocyanate compound A and blocked isocyanate compound B. The difference in the glass transition temperatures of said blocked isocyanate compound A and said blocked isocyanate compound B is at least 25.degree. C., and the glass transition temperature of said blocked isocyanate A is higher than the glass transition temperature of said blocked isocyanate B.

Abstract: Aqueous polyurethane dispersions prepared in several stages by reactingA) aliphatic and/or aromatic di- and/or tri-isocyanates withB1) polyol mixtures containing dimer diols of 25 to 100% by weight of dimer diols and 0 to 75% by weight of other hydrophobic diols and/or polyols, the equivalent ratio of OH to NCO being 1:1.1 to 1:4, and simultaneously or subsequently withB2) chain-extending agents containing two terminal NCO-reactive groups, the chain-extending agents additionally containing either artionic or cationic groups or groups convertible into anionic or cationic groups by neutralization, the equivalent ratio of NCO-reactive groups to NCO groups theoretically still present after the reaction of A) with B1) being 1:0.

Abstract: An aqueous binder mixture comprising substantially an aqueous solution and/or dispersion of a combination of a) at least one NCO prepolymer which is soluble and/or dispersible in water in the presence of component b), exhibits urethane groups and has blocked isocyanate groups, and b) a polyamine component comprising at least one (cyclo)aliphatic polyamine having at least 2 primary and/or secondary amino groups, and the use of the aqueous binder mixture for the preparation of coatings on heat-resistant substrates.

Abstract: The preparation and use of quarternized bis hydroxy alkyl amines by the reaction of a tertiary amine and an alkylene oxide in a strong acid system are disclosed. Cationic polyurethane compositions containing pendent hydroxy alkyl groups and methods for their preparation are also disclosed.

Abstract: Improved aqueous binder dispersions including polyurethanes and water-based physically drying coating compositions containing these aqueous dispersions which are particularly suitable for plain and metallic colored base coats employed for automotive repair lacquer coatings.

Abstract: This invention provides aqueous dispersions of externally chain extended polyurethane compositions terminated by hydrolyzable and/or hydrolyzed silyl groups and containing anionic solubilizing or emulsifying groups, particularly carboxyl groups. The invention also provides methods of making both anionically and cationically stabilized polyurethane dispersions. This invention further provides polyurethane dispersions which are substantially organic solvent free (e.g. less than about 7 weight percent organic solvent) which cure to water and solvent resistant, tough, scratch resistant, preferably light stable (non-yellowing) polyurethane films. Such films are particularly useful as coatings for wood substrates, including wood floorings, furniture, and marine surfaces.

Abstract: An aqueous two-component coating agent whose binder consists essentially of a combination of a) a polyol component present dissolved and/or dispersed in water comprising a1) at least one water-dilutable polymerisation resin or polycondensation resin with a molecular weight Mn of over 500 possessing hydroxyl groups and a2) a reactive diluent consisting of at least one water-soluble compound with a molecular weight Mn of under 500 capable of reacting with isocyanate groups and b) a polyisocyanate component with a viscosity at 23.degree. C. of from 50 to 10 000 mPa present emulsified in the aqueous solution or dispersion, a method for producing such coating agents wherein the said polyisocyanate component is emulsified in the said aqueous solution or dispersion with the optional incorporation of auxiliary substances and additives in the system prior to adding the polyisocyanate, and the use of the coating agents for the production of air-drying and/or heat-drying coatings.

Abstract: Aqueous selfcrosslinkable resin composition comprising an aqueous dispersion of at least one polyurethane polymer having anionic salt groups as sole chain-pendant functional group and at least one vinyl polymer having chain-pendant acetoacetoxyalkyl ester groups. A selfcrosslinking reaction between the polyurethane polymer and the vinyl polymer will take place during and/or after film formation, resulting in the formation of a polymeric film having properties not found to be those of the non-functional polymer components.

Abstract: Aqueous coating agent including a water-dilutable mixture of binding agents ofI. 50 to 88 wt. % of a neutralised water-soluble reaction product including(A) 10 to 80 wt. % of a polyurethane resin with an acid number of 70 to 160, at least one terminal blocked isocyanate group devoid of free hydroxyl groups and fatty acid residues with more than 12 C-atoms and with a limiting viscosity number of 6.5 to 12.0 ml/g, measured in DMF at 20.degree. C., and(B) 20 to 90 wt. % of a polyester resin with an OH-number of 50 to 500, an acid number of less than 20, a limiting viscosity number of 8.0 to 13.0 ml/g, measured in DMF at 20.degree. C., with the reaction product having a limiting viscosity number of 13.5 to 18.0 ml/g measured in DMF at 20.degree. C.II. 10 to 40 wt. % of one or several blocked polyisocyanates not capable of being diluted with water, andIII. 2 to 30 wt. % of at least one amine resin by way of additional cross-linking agent.

Abstract: A process for the production of carboxyfunctional polyurethane from dihydroxyfatty acids and/or dihydroxypolyfatty acids as isocyanate-reactive compounds bearing an ionizable group is provided. The dihydroxycarboxylic acids and/or dihydroxypolyfatty acids have no shielding molecular group near the carboxy group, more particularly not in the alpha-position to the carboxy group, and thus give particularly good results when used as a structural element for the production of polyurethanes. Also provided are polyurethanes and aqueous polyurethane dispersions produced using the dihydroxyfatty acids.

Abstract: A substantially solvent free aqueous two-component coating composition dispersion which, when applied to a substrate, cures to a film having properties of adhesion and bonding which are equal to or superior to films obtained from conventional solvent-based two-component polyurethane or epoxy systems. The first component is a combined aqueous polyol phase and an amine phase. The polyol phase comprises a member consisting of an acid containing polyol or a blend of polyols containing an acid containing polyol such that the average hydroxyl functionality of the polyol phase is at least 1.5 and has an acid number of between about 15 and 200. The amine phase is an amine or blend of amines containing active hydrogens reactive with NCO groups such that the average active hydrogen functionality is at least 1.5. The amine phase is present in a quantity sufficient to substantially neutralize the acid containing polyols.

Abstract: Aqueous polyurethane dispersions used in adhesives for manufacturing laminate structures are provided with improved dispersion properties, which provide improved shelf-life stability of the dispersion and greater transparency and handling characteristics in application machinery for adhesives formulated therefrom, when a tertiary amine is present during an initial polyurethane prepolymer reaction between an isocyanate and a polyol component having acid functional groups. The initial reaction is carried out prior to formation of the dispersion in water.

Abstract: The invention relates to a process for producing water-dilutable varnish binders and their use in manufacturing water-dilutable fillers for automobile paintwork. The binders contain a reaction product, which is dilutable with water after the neutralization of the carboxyl groups, of a polyurethane resin having carboxyl groups and at least one terminally blocked isocyanate group (polycarboxyl component) with a polyester having a hydroxyl group (polyhydroxyl component) and a cross-linking component. Further improvements in the shelf-life of the varnishes can be attained by specially selecting the binder components and special processing steps for the combination thereof.

Abstract: The application relates to a binder for water-based coating agents, containing a mixture of a carbonate-containing polyurethane prepared by reacting (A)(i) a polyisocyanate containing no hydrophilic groups, (ii) a high molecular weight organic polyhydroxyl compound containing hydrophilic groups and polyhydroxy carbonates, (iii) a lower molecular weight compound containing at least two isocyanate-reacting groups, and (iv) an ionic compound containing at least one isocyanate-reacting hydrogen atom, with (B)(i) one or more polyurethanes prepared by free radical polymerization of a polyurethane macromonomer, in the presence of (ii) an unsaturated monomer copolymerizable with (i).

Abstract: A method for the production of an aqueous dispersion of a long-chain alkyl graft polymer, which method comprises mixing an aqueous solution of a polyamine with a long-chain alkyl isocyanate and stirring the resultant mixture thereby causing reaction of said component reactants, and an aqueous release agent formed therefrom.

Abstract: The present invention relates to polyisocyanate mixtures havinga) an average isocyanate functionality of at least 4.1,b) a (cyclo)aliphatically bound isocyanate group content (calculated as NCO, molecular weight =42) of 12.0 to 20.5% by weight,c) a chemically incorporated carboxyl group content (calculated as COOH, molecular weight =45) of 0.01 to 5.0% by weight andd) an ethylene oxide unit content arranged within terminal or lateral polyether chains of 0 to 10% by weight (calculated as C.sub.2 H.sub.4 O, molecular weight =44).The present invention also relates to a process for the preparation of these polyisocyanate mixtures and to their use as cross-linking agents in aqueous coating compositions containing water soluble or dispersible binders or binder components.

Abstract: Aqueous polyurethane dispersions contain, at a pH of the dispersing medium of .gtoreq.6, an anionically stabilized polyurethane present in disperse form as well as an added polymer having acidic functions and intended for reducing the flow resistance.

Abstract: A process for reducing the pH of anionic polyurethane dispersions which are stabilized by carboxylate or sulfonate groups, which comprises adding a compound which has from one to four ester groups but no acid group or acid halide or anhydride group to the dispersions.

Abstract: The present invention relates to an aqueous two-component coating composition wherein the binder contains(a) a component which is dissolved and/or dispersed in water, has an average hydroxyl number of 15 to 200 mg KOH/g, and contains(a1) a polyol component having a content of 8 to 450 milliequivalents, per 100 g of component (a1) solids, of chemically incorporated ammonium groups, .dbd.N.dbd..sup.+, comprising one or more polyaddition resins which are water-dilutable, contain hydroxyl groups, and have a molecular weight (M.sub.n) of 500 to 20,000 and(a2) up to 10 wt %, based on the weight of component (a1), of one or more reactive diluents which are water-soluble, have a molecular weight (M.sub.

Abstract: The present invention relates to a heat-crosslinkable water-based coating composition containing as bindera) a water-soluble or water-dispersible polyol component andb) a water-soluble or water-dispersible blocked polyisocyanate which has an average NCO functionality of 2.0 to 2.6 and is based on the reaction product ofb1) a polyisocyanate mixture having an average NCO functionality of 2.5 to 3.5 and containing (i) at least 15% by weight of an organic diisocyanate,b2) a blocking agent for isocyanate groups in an amount of 50 to 80 equivalent-%, based on the isocyanate groups of component b1) andb3) an aliphatic monohydroxymonocarboxylic acid in a quantity of 20 to 50 equivalent-%, based on the isocyanate groups of component b1) and the hydroxyl groups of component b3), wherein the equivalent ratio, based on the isocyanate-reactive groups of blocking agent b2) and the hydroxyl groups of component b3) to the isocyanate groups of component b1) is at least 0.9:1.

Abstract: An aqueous composition comprising a carboxylate group-containing blocked polyurethane and water as essential components, wherein said polyurethane is a reaction product of a carboxylic acid (or carboxylate) group-containing polyoxyalkylene polyol containing at least 50% by weight of oxyethylene groups, with an average number of hydroxyl groups being more than 2 and having, on an average, from 0.005 to 0.8 --COOX group (X: a hydrogen atom or a cation) per molecule at the backbone chain terminals, a polyisocyanate having isocyanate groups in an amount stoichiometrically in excess of the hydroxyl groups of said polyol, and a blocking agent in an amount corresponding to the stoichiometrically excess amount of said polyisocyanate, and when X is a hydrogen atom, X is converted to a cation at an optional stage.

Abstract: Aqueous solutions and dispersions of polyisocyanate polyaddition products containing 2 to 200 milliequivalents chemically incorporated carboxylate and/or sulfonate groups per 100 g solids and 0 to 25% by weight, based on solids, of incorporated ethylene oxide units arranged within terminal and/or lateral polyether chains, in the production of which primary and/or secondary monoamino compounds are usd, a process for their production and their use as adhesives.

Abstract: A water-based vacuum forming laminating adhesive is disclosed. The adhesive includes a vinyl acetate polymer, an ionic water-dispersed polyurethane, and an aziridine. The composition is also substantially free of potentiometrically titratable acid. Also disclosed is a process for adhering a thermoplastic material to a rigid substrate. This process includes applying the above-described adhesive composition to the substrate, drying the composition, heating the thermoplastic material, contacting the thermoplastic material to the dry composition, and applying a vacuum to the thermoplastic material and the substrate for at least about; 10 seconds so as to adhere the thermoplastic material to the substrate. The composition of the present invention is particularly stable and can be used as a one component adhesive for up to 90 days.

Abstract: The present invention relates to coating compositions which are suitable for preparing matt coatings and containA) an aqueous polymer dispersion which is capable of forming films at temperatures below 70.degree. C. andB) an aqueous polyurethane polyurea dispersion which is not film forming below 70.degree. C. and preferably has an average particle diameter above 350 nm, preferably from 500 to 1000 nm.The present invention is also directed to textile or leather substrates coated with these coating compositions.

Abstract: The description relates to a physically drying water-based coating agent. It contains water, pigments, neutralizing agents, conventional additives, small proportions of solvents and a binder mixture consisting ofA) 10 to 90 wt. % polyurethanes with carbonate groupings and a glass transition temperature of <0.degree. C. based on reaction products of polyisocyanates with polyhydroxyl compounds, with a content of polyhydroxy polycarbonates andB) 90 to 10 wt. % of reaction products of carboxy-functional polycondensates and .alpha.,.beta.-olefinically unsaturated monomers with a glass transition temperature of >0.degree. C. in the form of an aqueous dispersion.The coating agent is particularly suitable for manufacturing lacquers for repairs in the motor vehicle sector.

Abstract: Unsaturated polyurethanes, and the use thereof as reactive emulsifiersUnsaturated polyurethanes which contain from 20 to 80% by weight of polyethylene glycol units and can be prepared by reactinga) at least one organic polyisocyanate,b) an unsaturated fatty alcohol, a polyalkylene glycol ether thereof or an unsaturated acid ester containing one hydroxyl group,c) one or more diols which additionally contain at least one further hydroxyl group or carboxyl group andd) a polyethylene glycol having a molecular weight in the region of 750 to 10,000, with maintenance of an NCO/OH equivalent ratio, based on all the starting components a) to d), of from 0.7:1 to 1.2:1.These unsaturated polyurethanes are used as reactive emulsifiers for the preparation of dispersions of hydrophobic synthetic resins which can be cured by means of free radicals and/or oxidatively.

Abstract: The present invention relates to a two-component, aqueous polyurethane coating composition which may be cured at ambient temperature and which containsI) a first component based on an aqueously dispersed polyurethane wherein the polyurethane hasa) an average hydroxy functionality of at least 1.8b) a total content of urethane and urea groups, calculated as --NH--C--O--, of 9 to 20% by weight, based on the weight of the polyurethane, andc) sufficient chemically incorporated anionic groups andd) ethylene oxide units incorporated within terminal and/or lateral polyether chainsto maintain the polyurethane stably dispersed in water, andII) a second component based on a water dispersible polyisocyanate wherein the polyisocyanate hasa) an isocyanate content of 2 to 30% by weight, based on the weight of the polyisocyanate,b) an average functionality of at least 1.

Abstract: Novel polymers which are suitable as binders are obtainable by reacting(A) a base resin which has an average molecular weight M.sub.w of from 200 to 5,000 and contains on average from 1 to 3 epoxy or isocyanato groups as the reactive groups per moleculewith(B) a mixture of(B1) 5 to 50% by weight of polyisobutylene which is terminated with primary amino groups and has an average molecular weight M.sub.w of from 500 to 5,000 and(B2) 5-95% by weight of an amidoamine which carries primary amino groups and is obtainable by condensation of diprimary diamines of 2 to 20 carbon atoms with aliphatic C.sub.2 -C.sub.44 -dicarboxylic acids,the amounts being such that from 1 to 5 equivalents of primary amino groups of (B) are present per equivalent of reactive groups of (A).

Abstract: This invention relates to an aqueous binder composition containingA) an aqueous solution or dispersion of an organic polyol component which can be diluted with water and contains at least one polyester resin containing urethane, carboxylate and hydroxyl groups andB) a polyisocyanate component which has a viscosity of 50 to 10,000 mPa.s at 23.degree. C. and contains at least one organic polyisocyanate which is present as an emulsion in component A),wherein the NCO/OH equivalent ratio, based on the isocyanate groups of component B) and the hydroxyl groups of the polyol component present in A), is 0.5:1 to 5:1.The invention also relates to a process for the preparation of these coating compositions by emulsifying a polyisocyanate component having a viscosity of 50 to 10,000 mPa.s at 23.degree. C.

Abstract: The present invention relates to two-component, aqueous polyurethane coating compositions which may be cured at ambient temperature and which containI) a polyisocyanate mixture having an NCO content of 10 to 47% by weight and containing isocyanurate and allophanate groups in a molar ratio of monoisocyanurates to monoallophanates of 10:1 to 1:5, wherein the allophanate groups are formed from urethane groups which are based on the reaction product of an organic diisocyanate having (cyclo)aliphatically bound isocyanate groups and a monoalcohol containing at least 1 carbon atom and having a molecular weight of up to 500, andII) a water dispersible or water soluble polyol, wherein components I and II are present in an amount sufficient to provide an equivalent ratio of isocyanate groups to hydroxyl groups of 0.8:1 to 6:1.The present invention is also directed to the coatings prepared from these coating compositions.

Abstract: The present invention is directed to a process for the preparation of an aqueous two-component polyurethane-forming composition bya) dispersing in water a polyisocyanate which has an isocyanate content of at least 12% by weight andb) also blending with water either before, during or after dispersing the polyisocyanate, a polyhydroxyl compound whichi) has a molecular weight of 62 to 10,000,ii) contains at least two hydroxyl groups,iii) is water soluble or water dispersible,iv) does not contain urea or urethane groups andv) is selected from the group of polyesters, polylactones, polycarbonates, polyethers, polythioethers, polyacetals, polyether esters, polyester amides and polyamides,wherein the equivalent ratio of isocyanate groups to aqueous groups is 0.8:1 to 6:1.The present invention is also directed to the aqueous composition prepared by this process and to its use as a binder for fiberglass.

Abstract: The present invention is directed to a aqueous polyurea dispersion for the preparation of an aqueous polyurea dispersion byI) dispersing in water at an NCO:NH equivalent ratio of 0.5:1.0 to 2.0:1.0a) a polyisocyanate which has an average functionality of 1.5 to 4.0 and an isocyanate content of at least 12% by weight andb) a polyamine component containingi) 30 to 70 mole percent of a polyamine having at least two primary and/or secondary amino groups and a molecular weight of at least 1000 andii) 30 to 70 mole percent of a polyamine having at least two primary and/or secondary amino groups, a molecular weight of less than 400 and at least one anionic or potential anionic group andII) allowing the polyisocyanate and polyamine component to react to form an aqueous polyurea dispersion.The present invention is also directed to the aqueous polyurea dispersion prepared by this aqueous polyurea dispersion.

Abstract: A water based, solvent free, two component polyurethane-polyurea dispersion containing up to 65% solids. The first component is a polyester-polyol phase and an aqueous amine phase mixture. The polyester-polyol is a combination of modified polyester-polyols, low viscosity polyether or polyester-polyols, chain extending low molecular weight polyols, neutralizing amines and a detergent. It has a solids content of 90-100% and is totally hydroxyl functional with a carboxylic acid number of 10 and 50, an hydroxyl number of 180 and 300, an equivalent weight range of 165 and 365 and a viscosity of 600-1500 cps at 25.degree. C. The amine phase is an combination of neutralizing and chain extending amines having ratios preformulated to provide a balanced chain extending cross-linking reaction in aqueous phase with--NCO reactive groups. The aqueous amine blend has an equivalent weight of 40 to 50 and a solids content of 40-60%.

Abstract: The present invention relates to an aqueous binder composition containingA) an aqueous solution or dispersion of a water-dilutable organic polyol component containingA1) at least one water-dilutable polyester resin containing sulfonate and hydroxyl groups and having a molecular weight (M.sub.n) of 500 to 50,000, an OH number of 20 to 240 mg KOH/g, a content of sulfonate groups (--SO.sub.3.sup.-) of 4 to 70 milliequivalents per 100 g of polyester resin and a content of carboxylate groups (--COO.sup.-) of 0 to 40 milliequivalents per 100 g of polyester resin andA2) optionally a reactive thinner containing at least one water-soluble monohydric or polyhydric alcohol which has a molecular weight (M.sub.n) below 500 and which is non-distillable at normal pressure or has a boiling point of at least 150.degree. C., andB) a polyisocyanate component which is emulsified in the aqueous solution or dispersion A), has a viscosity at 23.degree. C. of 50 to 10,000 mPa.

Abstract: Aqueous coating compound containing a polyurethane resin-based binder ofI) from 60 to 100% by weight of a mixture ofA) from 5-95% by weight of one or more self-emulsifying polyurethane resins in aqueous dispersion having a number average molar mass (Mn) of from 30000 to 300000 and containing carboxyl groups corresponding to an acid number of from 5 to 50, obtainable from a water dispersible polyurethane prepolymer having more than one free isocyanate group per molecule, by chain lengthening with water andB) from 95 to 5% by weight of one or more acrylated polyesters and/or acrylated polyurethanes having an acid number of from 5 to 50 in aqueous dispersion andII) from 0 to 40% by weight of one or more formaldehyde condensation resins and/or blocked polyisocyanates,the percentages by weight being based in each case on the resin solids content. The coating compounds are suitable in particular as basic lacquers for multi-coat lacquering. Coatings with good weather resistance are produced from them.

Abstract: The present invention relates to an aqueous binder composition containingA) an aqueous solution or dispersion of a water-dilutable organic polyol component containing at least one polyester resin having carboxylate and hydroxyl groups and grafted with vinyl monomers andB) a polyisocyanate component which is emulsified in the aqueous solution or dispersion A), has a viscosity at 23.degree. C. of 50 to 10,000 mPa.s and contains at least one organic polyisocyanate,wherein the binder composition has an NCO/OH equivalent ratio of 0.5:1 to 5:1, based on the isocyanate groups of component B) and the alcoholic hydroxyl groups of component A).The present invention also relates to a process for the production of a coating or sealing composition containing this aqueous binder composition.

Abstract: The present invention relates to isocyanatocarboxylic acids containinga) 1 to 30% by weight of isocyanate groups attached to (cyclo)aliphatic tertiary carbon atoms andb) 0.5 to 500 milliequivalents, per 100 g of isocyanatocarboxylic acids, of carboxyl groups which may be at least partially present in carboxylate salt form.The present invention also relates to a process for the preparation of these isocyanatocarboxylic acids and to their use as cross-linking agents for aqueous coating compositions.

Abstract: A coating composition is disclosed comprising:(a) an aqueous medium,(b) a water-dispersible polyurethane resin that is the reaction product of a mixture comprising:(1) a long-chain aliphatic polyol having 18 to 60 carbon atoms,(2) a multifunctional compound having at least one active hydrogen group and at least one water-stabilizing group,(3) an active hydrogen-containing capping and/or chain extending agent, and(4) a polyisocyanate, and(c) an aminoplast crosslinking agent.

Abstract: The present invention relates to a water-based binder composition containingA) an aqueous solution or dispersion of a water-dilutable organic polyol component containing a mixture of at least 5% by weight each of at least two hydroxy-functional polymers selected fromA1) polyester resins containing hydroxyl, urethane and carboxylate groups,A2) polyester resins containing hydroxyl and carboxylate groups, but no urethane or sulfonate groups,A3) polyester resins containing hydroxyl and sulfonate groups and, optionally, carboxylate groups and/or urethane groups,A4) polyacrylate resins containing hydroxyl, carboxylate and/or sulfonate groups,A5) acrylate-grafted polyester resins containing hydroxyl, carboxylate and/or sulfonate groups, andB) a polyisocyanate component which is emulsified in the aqueous solution or dispersion A), has a viscosity at 23.degree. C. of 50 to 10,000 mPa.