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: 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 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: 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 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: Described are a method for the preparation of a multilayer coating and a coating material from an aqueous dispersion of a polymer with a particle diameter of the polymeric phase of 10 nm to 500 nm. The polymer has a number average molecular weight of 10,000 to 500,000 and an acid number of 12 to 40. The dispersion was obtained by polymerization without addition of emulsifier and in the presence of water insoluble initiators of a) 0.

Abstract: Aqueous coatings for the multi-layer painting of motor vehicles based on one or more binders and optionally crosslinking agents, pigments and/or fillers, paint industry additives and/or solvents, which contain as binder an aqueous dispersion based on polyurethane/polymer hybrid polymers having a numerical average of the molar mass (Mn) of 8000 to 1500000, a ratio by weight of polyurethane to polymer content of 0.05:1 to 50:1, a hydroxyl number of 0 to 150 mg KOH/g, based on solid resin, hydroxyl groups bound to silicon not being included when calculating the OH number, and an acid number of 1.5 to 40 mg KOH/g, based on solid resin, and a content of 0.5 to 150 mmole of silicon per 100 g of solid resin in the form of siloxane bridges (--Si--O--Si--) bound into the polyurethane content and/or in the form of silanol groups bound to the polyurethane content.

Abstract: An aqueous binder vehicle dispersion and coating media, which can be used for multi-layer coating, wherein the dispersion is obtainable by the reaction ofI. 20 to 97% by weight of a polyurethane(-urea) resin containing groups which are reactive towards a chain extender IV), having a number average molecular weight (Mn) of 1000 to 10,000, and 8 to 80 milliequivalents per 100 g of ionic groups, groups which can be converted into ionic groups and/or hydrophilic groups,II. 0 to 30% by weight of a polyester resin having a number average molecular weight (Mn) of 500 to 5000, and having the same groups as in I) which are reactive towards IV), andIII.

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: This invention relates to a water-thinnable dispersion of one or more cationically modified and urethane-modified (meth)acrylic copolymers, which are produced by the solution polymerisation of unsaturated monomers which are polymerisable by a radical mechanism, or of a mixture of such monomers. Coating media based on this dispersion are particularly suitable for the production of base coats in multi-layer coatings, particularly in the coating of vehicles and vehicle parts.

Abstract: A method of manufacturing aqueous dipsersion of polyurethane resins free from urea groups and containing ionic groups and suitable for coating agents, with a number average moleculear weight (Mn) of 10,000 to 300,000 and an acid number of 5 to 50, by preparing a polyurethane prepolymer containing OH groups and with an OH number of 5 to 75 and a number average molecular weight (Mn) of 5,000 to 50,000.

Abstract: Aqueous binder dispersions for aqueous coating compositions, which are stable in storage and have good applicational properties. The dispersions are obtainable by joint chain extension ofone or more polyurethanes containing no urea groups, bearing ionic groups or groups convertible into ionic groups, having substantially terminal OH groups and having a number average molar mass (M.sub.n) of 1,000 to 10,000, an acid value of 5 to 50 and an OH value of 5 to 50 andII. one or more polymers containing hydroxyl groups based on ethylenically unsaturated monomers, having an acid value of 0 to 20, an OH value of 150 to 400 and a number average molar mass (M.sub.n) of 2,000 to 20,000, wherein the molar ratio of the hydroxyl groups of component I to those of component II is 1:6 to 1.0:0.5, withIII. one or more diisocyanates, in a molar ratio of the OHgroups from components I and II to the NCO groups of component III of 1.

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: An aqueous coating composition is provided which comprises a film forming material based on water dilutable binders which are comprised of a mixture of (A) 90 to 40% by weight of hydroxyl group-containing polymer resin; (B) 10 to 60% by weight of polyurethane dispersion and (C) pigments; as well as optionally conventional solvents, auxiliary agents, and additives. The process for the preparation of the coating composition and a method for the application of the coating composition are also described.

Abstract: A non-autocrosslinking binder composition for water dilutable lacquers is described, containing from 95 to 50 parts by weight of a water dilutable poly(meth)acrylate resin containing amino and hydroxyl groups and from 5 to 50% by weight of crosslinking agents is described. An aqueous electrodip lacquer coating composition capable of being deposited at the cathode and its use for coating articles having an electrically conductive surface at the cathode are also described.

Abstract: A cathodically precipitable aqueous electro-dipcoating agent which includes as Component A, 50 to 99% by mass (relative to the total quantity of Components A and B) of a synthetic resin binder having tertiary amino groups and hydroxyl groups which can be rendered water soluble by protonation with acids, and which(a) has an amine number of 35 to 120,(b) has a hydroxyl number of 50 to 400,(c) has substantially no primary, secondary and quaternary amino groups,(d) has substantially no free isocyanate groups, and(e) has substantially no blocked isocyanate groups which can react at baking temperatures of up to 200.degree. C. with hydroxyl groups present in the reaction components.The agent also includes as Component B, 1 to 50% by mass (relative to the total quantity of Components A and B) of substantially non-acid synthetic resins having at least two terminal esterified carboxyl groups which can react under normal lacquer baking conditions with Component A, accompanied by cross-linkage.

Abstract: Aqueous electrodip lacquer coating compound capable of being deposited cathodically, containing, as synthetic resin binder,(A) 55 to 95% by weight of synthetic resin binder which can be rendered water soluble by protonation with acid and(B) 5 to 45% by weight of a cross-linking agent containing ester groups capable of transesterification and/or transamidation and having terminal ester groups which are substantially stable in a neutral aqueous medium but capable of reacting with synthetic resin binder (A) in an alkaline medium at temperatures above 140.degree. C., component (A) containing in its molecule at least one molecule-enlarging diamine of the formula ##STR1## wherein the symbol Y stands for H or C.sub.m H.sub.2m+1 (m=1 to 8) or an organic group used for defunctionalization, which is formed by the reaction of the primary amino group with monoepoxides, and the symbol X represents a molecular grouping having at least one amide and/or urea group.

Abstract: Paint coating material capable of cathodic deposition based on a vehicle mixture that has been made water-thinnable with acid and optionally customary additives, wherein said vehicle contains in combination(A) from 50 to 90% by weight of a polymer and/or polycondensate containing tertiary amino-groups and OH groups and having amine and hydroxy numbers of from 30 to 170 and 30 to 300 respectively;(B) from 5 to 40% by weight of a fully blocked polyisocyanate which is stable in the aqueous phase and becomes reactive again under the influence of heat, after dissociation of the blocking group; and(C) from 0 to 30% by weight of polymer and/or polycondensate containing primary and/or secondary OH- and/or amino-groups.

Abstract: The invention concerns a pre-condensed, thermosetting aqueous lacquer coating material containing a pre-condensation product that becomes water-dilutable after protonization with acids and has a mean molecular weight [M.sub.n ] of 800 to 15,000, obtainable by heating of 55 to 95% by weight, based on the total quantity of the binding agent, of an organic synthetic-resin binder containing primary and/or secondary amino groups which has an amine number of 30 to 150 and 5 to 45% by weight of a crosslinking agent possessing esterified terminal carboxyl groups.The invention moreover concerns the application of this lacquer coating material for cathodic deposition upon electrically conducting surfaces.

Abstract: The invention relates to a self-cross-linking, thermosetting, aqueous lacquer coating material, which comprises synthetic resins having a mean molecular weight (M.sub.n) of about 500 to 15,000 and containing primary and/or secondary--and if appropriate also tertiary--amino groups as well as terminal esterified carboxyl groups, having an amine number of about 20 to 180 and an ester number of about 20 to 350, and which becomes dilutable with water through protonization with acids.The invention moreover concerns the utilization of this lacquer coating material for the purposes of cathodic deposition upon electrically conducting surfaces.