Abstract: The description relates to coating agents for use as primers and fillers in the manufacture of multilayer lacquer coatings, more particularly in the motor-vehicle sector.The coating agent contains a binder mixture ofA) 60-75 wt. % of a hydroxy-functional copolymer with an OH number of 110 to 170 mg KOH/g, obtainable froma) 5-60 wt. %, preferably 10-30 wt. % of at least one diester of an alpha, beta-olefinically unsaturated dicarboxylic acid with saturated monohydric alcohols containing 1-8 carbon atoms,b) 10-70 wt. %, preferably 35-60 wt. % of one or more vinyl aromatic hydrocarbons,c) 0-30 wt. %, preferably 0-15 wt. % of one or more glycidyl esters of aliphatic saturated monocarboxylic acids branched in the alpha position,d) 25-50 wt. % of at least one hydroxy alkyl ester or a mixture of at least one alkyl ester and one hydroxyl alkyl ester of an alpha, beta-olefinically unsaturated monocarboxylic acid, ande) 0-10 wt. % of one or more alpha, beta-unsaturated monocarboxylic acids,B) 1-6 wt.

Abstract: Process for cleaning equipment and equipment cleaner for implementing the process.The invention relates to a process for cleaning equipment contaminated with lacquer residues, in which the lacquer residues are removed with a solvent mixture and an equipment cleaner based on a solvent mixture for implementing the process. The solvent mixture containsA) 15-35 wt. % of one or more glycol ethers of the general formula IOH--(CH.sub.2 --CH.sub.2 --O).sub.m --R.sub.1 Iwhere R.sub.1 =C.sub.1-4 -alkyl and m=1 or 2 andB) 65-85 wt. % of one or more aliphatic ketones of the general formula II ##STR1## where R.sub.2=C.sub.1-3 -alkyl and R.sub.3 =C.sub.1-3 -alkyl and R.sub.2 and R.sub.3 may be identical or different.

Abstract: A coating medium suitable for multilayer coatings, containingA) copolymers containing hydroxyl groups, comprisinga1) 8-12% by weight of vinyl esters of alpha, alpha,dialkyl-substituted, branched, aliphatic saturated monocarboxylic acids,a2) 32-42% by weight of hydroxyalkyl esters of (meth)acrylic acid,a2) 25-40% by weight of alkyl esters of (meth)acrylic acid,a4) 12-24% by weight of cycloalkyl esters of (meth)acrylic acid, anda5) 2-4% by weight of (meth)acrylic acidwith a hydroxyl number of 100-160 mg KOH/g, an acid number of 10-50 mg KOH/g, a number average molecular weight (Mn) of 1000 to 3000 g/mole and a glass transition temperature (Tg) of 30.degree.-80.degree. C.,B) polyisocyanates in a quantitative proportion such that 0.5 to 2 isocyanate groups are allotted to one hydroxyl group of component A), andC) solvents and optionally one or more pigments, extenders and/or customary lacquer additives.

Abstract: A binder composition, a coating composition containing this binder, a process for its production and use to produce single or multi-layer lacquer coatings, particularly in the automotive sector, are described. The binder composition containsA) 25 to 75 wt. % of the reaction product of one or more carboxy-functionalised poly(meth)acrylic copolymers and/or one or more carboxy-functionalised polyesters, each with an acid value of 15 to 200 mg KOH/g, with one or more lactones,B) 25 to 75 wt. % of one or more epoxy-functionalised crosslinking agents with at least two epoxy functional groups per molecule, with a number average molecular weight (Mn) of 200 to 10000 g/mol,C) 0 to 60 wt. % of one or more polyols with at least two hydroxyl functional groups per molecule,D.sub.1) 0 to 20 wt. % of one or more melamine resins,D.sub.2) 0 to 40 wt. % of one or more capped polyisocyanates, wherein the sum of the weight percentages of components A), B), C), D.sub.1) and D.sub.2) is 100 wt. %, together withE) 0 to 10 wt.

Abstract: A process and a coating medium for producing a decorative multilayer coating on a substrate, wherein a base lacquer coat is applied and is overpainted with a transparent lacquer coat, wherein an aqueous, self-crosslinking base lacquer is used, which contains, as a binder vehicle, an aqueous polyurethane resin dispersion based on a polyurethane resin having a number average molecular weight (Mn) of 2500 to 120,000, a content of 10 to 400 mmole of lateral and/or terminal hydroxyl and/or R'O groups bonded to silicon, whereR'=a C.sub.1 to C.sub.8 alkyl or C(O)R''', andR'''=a C.sub.1 to C.sub.10 alkyl,per 100 g solid resin, a hydroxyl number of 0 to 150, wherein hydroxyl groups bonded to silicon are not included in the calculation of the OH number, and a content of ionic groups, groups convertible into ionic groups and/or hydrophilic groups of 5 to 200 mEqu per 100 g solid resin.

Abstract: A binder composition for coating agents containsA.sub.1) C--H-acid compounds obtainable by polymerization of hydroxyfunctional and non-hydroxyfunctional monomers, polyols and .beta.-keto carboxylic acid esters and subsequent esterification of the hydroxy groups with the .beta.-keto carboxylic acid esters,A.sub.2) C--H-acid compounds obtainable by transesterification of polyols with .beta.-keto carboxylic acid esters,.alpha.,.beta.-unsaturated compounds with at least two groups having the formulaR.sub.1 R.sub.2 C.dbd.CR.sub.3 --CO--bonded to at least one additional group R.sub.1 R.sub.2 C.dbd.CR.sub.3 --CO-- via the radical of a polyalcohol, polyamine or amino alcohol,C) polyglycidyl compound,D) polyamine hardeners,E) Lewis or Bronstedt bases andF) polysiloxane compounds.

Abstract: Aqueous coating composition based on polyols with ammonium groups and polyisocyanates, which coating composition may contain pigments and/or extenders, customary lacquer additives and one or more organic solvents, and containsA) as binder at least one (meth)acrylic copolymer with a hydroxyl value of 20 to 150 mg KOH/g and with an amine value of 10 to 150 mg KOH/g, both values being related to solid resin, wherein 2 to 50 wt.% of the solid binder resin may be replaced with one or more other binders, wherein the (meth)acrylic copolymer is neutralised with an acid containing at least one isocyanate-reactive group; andB) as crosslinking agent at least one polyisocyanate, which may be blocked,wherein components A) and B) are present in quantities such that the ratio of the sum of isocyanate-reactive groups in the binder component A) to the blocked and unblocked isocyanates in component B) is 1:0.5 to 1:3. The coating composition is in particular suitable for use in the production of coatings on plastic substrates.

Abstract: A solvent based coating composition containing a binding agent, the binding agent comprising: (a) 10 to 80 wt.% of at least one hydroxyfunctional polyester formed by reacting a mixture comprising: (i) 10 to 40 mol.% of a 2,2-dialkylalkanediol with two primary OH groups; (ii) 10 to 30 mol.% of a polyol with at least one secondary OH group; (iii) 20 to 50 mol.% of an aliphatic or cycloaliphatic dicarboxylic acid with fewer than 16 C atoms or anhydrides thereof; (iv) 5 to 30 mol.% of a compound selected from the group consisting of dimeric fatty acids, dimeric diols, epsilon-caprolactone, and mixtures thereof; (v) 1 to 15 mol.% of a hydroxycarboxylic acid with at least one hydroxy group and at least one carboxyl group; and (b) 10 to 80 wt.% of a (meth)acrylic copolymer containing a hydroxyl group; and (c) 10 to 60 wt.% of a crosslinking agent; wherein the sum of the wt.% of components (a)-(c) is 100% of the binding agent.

Abstract: A non-aqueous dispersion containing, in addition to organic solvents,A) from 15-85% by weight of a dissolved film-forming component of hydroxyl group- and carboxyl-group containing polyesters, (meth)acrylic copolymers or mixtures thereof in which up to half the molecules may be esterified with 1 molecule of maleic acid each, andB) from 15-85% by weight of a disperse phase of uncross-linked (meth)acrylic copolymers having a hydroxyl number of at least 300, obtainable by the radical polymerization ofa) from 80-100% by weight of hydroxyalkyl (meth)acrylates andb) from 0-20% by weight of other .alpha.,.beta.-monounsaturated monomers in the dissolved film-forming component.

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: The description relates to physically drying water-based coating agents. They contain water, metallic pigments, optional other pigments, neutralizing agents, conventional additives, small proportions of solvents and a binder mixture consisting ofA) 50 to 90 wt. % polyurethanes with carbonate groupings and a number average molecular weight of 70000 to 500000 based on reaction products of polyisocyanates with polyhydroxyl compounds, with a content of polyhydroxy polycarbonates andB) 10 to 50 wt. % of carboxylic acid ester groups containing polyurethanes with a number average molecular weight of 20000 to 100000.They are particularly suitable for manufacturing metallic lacquers for repairs in the motor vehicle sector.

Abstract: There are described aqueous dispersions of polyurethane resins, the production thereof and their use in aqueous coating agents, said dispersions being obtainable in aqueous or non-aqueous phase froma) polyurethane resins with at least one CH acidic group, an ionic or non-ionic hydrophilic group and, optionally, OH and/or NH groups, byb) introduction of olefinic double bonds by reaction withb.sub.1) compounds with a CH acidic group and an olefinic double bond, and/orb.sub.2) compounds with an olefinic double bond and also a group that is capable of reacting with CH acidic groups, and/orb.sub.3) compounds with an olefinic double bond and also a group that is capable of reacting with OH or NH groups, orb.sub.4) formaldehyde,whereupon, optionally, conversion into the aqueous phase and radical polymerization are effected.

Abstract: An aqueous coating composition which is self-drying or is crosslinked by external agents, processes and dispersions for its preparation and its use.

Abstract: An aqueous solution or dispersion of a vehicle for an aqueous cataphoretic coating material, the solution or dispersion containing one or more acid-neutralized, basic, film forming resins, an organic solvent, and a cross linking agent for the film forming resins, the aqueous solution or dispersion being obtained by mixing the following components A) and B):A) from 95% to 50% by weight solids basis of an aqueous solution or dispersion of one or more, neutralized, basic, film forming resins having a resin solids content of from 25% to 55% by weight, and an organic solvent content of more than 4% by weight, both based on the total solution or dispersion, and a minimum film forming temperature of less than 30.degree. C.

Abstract: Aqueous spot fillers, containing at least one water dilutable, olefinically unsaturated binder, conventional pigments, fillers and adjuvants, corresponding to a solids content of50-90 wt %10-40 wt % of water and0-10 wt % of one or more organic solvents,the water dilutable, olefinically unsaturated binders containing anionic groups or groups convertible to anionic groups, corresponding to an acid number of 25-175 and being the reaction products ofA) 40-80 wt % of one or more polydiene oils,B) 5-25 wt % of one or more polymerisable olefinically unsaturated monomers containing anionic groups or groups convertible to anionic groups,C) 0-10 wt % of one or more bis-(2-oxazolines) andD) 0-40 wt % of one or more ethylenically unsaturated monomers.the percentages of A), B), C) and D) adding up to 100 wt %.The spot fillers can be used for the preparation of multi-layer coatings, especially on motor vehicles.

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: Coating composition containing one or several (meth)acrylic copolymers having hydroxyl groups, as well as one or several solvents and, optionally, water, special-effect pigments and/or coloring pigments, fillers and/or conventional lacquering additives, whereby the (meth)acrylic copolymer is essentially constructed from units based on the following monomers:a) 0.5-10.0% by weight of amides and/or N-substituted amides of acrylic acid and/or methacrylic acid,b) 5.0-30.0% by weight of phenylalkyl esters of acrylic acid and/or methacrylic acid,c) 10.0-30.0% by weight of hydroxyalkyl esters of acrylic acid and/or methacrylic acid having 2-8 C-atoms in the hydroxyalkyl residue,d) 0.6-7.5% by weight of acrylic acid and/or methacrylic acid, ande) 30.0-83.9% by weight of alkyl esters of acrylic acid and/or methacrylic acid having 1-18 C-atoms in the alkyl residue, andwhereby the sum of components a) to e) amounts in each case to 100.

Abstract: A process for the preparation of blocked isocyanates by reaction of free isocyanates under water-free conditions with blocking agents containing acid hydrogen in the presence of basic catalysts, these being one or more alkali hydroxides, particularly lithium hydroxide. The process leads to yellowing-free products with a low alkali content which may be used as cross-linking agents for polyols, particularly in the lacquer sector.

Abstract: Two component-coating agents and emulsions which can be used for their preparation. The coating agents contain:A) 10 to 40 wt.-% of one or more polyols having a number average molecular weight (Mn) of 500 to 200000, an OH-number of 15 to 300 and a content of ionic groups and/or groups convertible into ionic groups of 5 to 400 meq/100 g solid resin, which are at least partly neutralized,B) 0.5 to 10 wt.-% of one of more chlorinated polyolefines having a chlorine content of 15 to 35 wt.-%,C) 5 to 40 wt.-% of one or more aromatic solvents having a boiling range from 100.degree. to 160.degree. C.,D) 25 to 75 wt.-% of water,E) 0 to 30 wt.-% of one or more further water dilutable binders which are free from groups reactive with NCO,the percentages by weight of components A) to E) adding up to 100 wt.-% andF) one or more polyisocyanates having on average at least two free isocyanate groups per molecule, in such an amount that the ratio of the number of reactive isocyanate groups to the OH-groups of the polyols is 0.

Abstract: Coating composition suitable for use in the production of coatings with a rapidly curable surface containingA) 10-80 wt. % of one or more compounds with on average at least two CH-acid hydrogen atoms,B) 10-80 wt. % of one or more .alpha.,.beta.-unsaturated compounds with at least two identical or different groups of the general formula R.sub.1 R.sub.2 C.dbd.CR.sub.3 --CO-- which are linked together by the residue of a di-or polyhydric alcohol, a di- or polyamine or aminoalcohol, in which R.sub.1, R.sub.2 and R.sub.3 are mutually independently a hydrogen atom or a straight or branched alkyl residue with 1 to 10 carbon atoms, which residue may be olefinically mono- or polyunsaturated and/or may have one or more hydroxyl groups,C) 0-50 wt. % of one or more radically or ionically polymerisable compounds,D) 5-50 wt.