Abstract: This invention relates to radiation-curable coating compositions which contain A) compounds having one or more free-radically polymerisable double bonds which additionally contain at least one further functional group reactive for the purposes of an addition and/or condensation reaction, B) compounds having one or more free-radically polymerisable double bonds, which additionally contain at least one further functional group reactive for the purposes of an addition and/or condensation reaction, wherein the additional reactive functional group is complementary to or reactive towards the additional reactive functional groups of component A), C) optionally at least one monomeric, oligomeric and/or polymeric compound having at least one functional group reactive towards the functional groups from component A) or component B) D) one or more photoinitiators as well as E) optionally solvents, water, pigments and/or extenders as well as conventional lacquer additives, wherein component A) and component B) diffe

Abstract: A process for lacquer coating substrates with a colored and/or effect base lacquer and a clear lacquer topcoat, in which a colored and/or effect base lacquer layer of a base lacquer coating composition is applied onto a substrate and is provided in a wet-on-wet process with a clear lacquer coating. Before being jointly stoved or jointly cured with the base lacquer layer, the uncured clear lacquer layer is exposed to high-energy radiation. In the clear lacquer coating composition, the resin solids content contains 50 to 98 wt. % of a system A) thermally curable by addition and/or condensation reactions, which system contains substantially no free-radically polymerisable double bonds and substantially no groups capable of reacting in another way with free-radically polymerisable double bonds of a system B). The resin solids content further contains 2 to 50 wt.

Abstract: The invention relates to a binder (A) in aqueous dispersion which is obtainable by neutralization of the tertiary amino groups of an amino-epoxy resin a1) with acid and reaction of the resulting product with a polyepoxide a2) to form quaternary ammonium groups and conversion into an aqueous dispersion with water. The invention furthermore relates to a process for the preparation of binders (A) in aqueous dispersion and their use in cathodic electrodeposition lacquers.

Abstract: A binder vehicle composition which is suitable for coating media, containing: A) 20 to 77% by weight of one or more binder vehicles based on oligomeric or polymeric polyol compounds with a hydroxyl number of 80 to 300, an acid number of 0 to 30, a number average molecular weight (Mn) of 500 to 10,000, and a glass transition temperature of −20 to +70° C.; B) 77 to 20% by weight of crosslinking agents based on aliphatic and/or cycloaliphatic polyisocyanates; C) 3 to 20% by weight of oligo- or polyesters, which contain carboxyl groups, as catalyst resins, which have an acid number of 210 to 300 mg KOH/g and a number average molecular weight (Mn) of 420 to 3000; and one or more organic solvents and/or water.

Abstract: This invention relates to a binder composition suitable for coating compositions, which binder composition contains one or more carboxy-functional polymers, one or more compounds having an epoxide function in the molecule, one or more polyols having at least two hydroxyl functions in the molecule, which polyols differ from a component A) optionally containing hydroxyl functions, components which crosslink with hydroxyl groups to form ethers and/or a triazine-based crosslinking agent, optionally one or more polyisocyanates, which may optionally be capped, optionally an anhydride component and optionally one or more catalysts for catalysing the reaction of carboxyl and epoxide groups.

Abstract: Coating composition suitable for multi-layer lacquerings, with a binder composition which comprises: A) 25 to 75 wt. % of carboxyl-functional (meth)acrylic copolymers and/or carboxyl-functional polyesters, the carboxyl functionality of which corresponds to an acid number of 15 to 300 mg KOH/g, B) 25 to 75 wt. % of epoxide-functionalized crosslinker resins, at least one of which is a (meth)acrylic copolymer which has been prepared co-using tert-butyl (meth)acrylate, C) 0 to 50 wt. % of polyols which have at least two hydroxyl functions in the molecule, D) 0 to 40 wt. % of components which crosslink with hydroxyl groups to form ethers, and/or of a crosslinking agent based on triazine, E) 0 to 40 wt. % of polyisocyanates, F) 0 to 50 wt. % of at least one organic polyanhydride with at least two cyclic carboxylic acid anhydride groups per molecule, G) 0 to 20 wt. % of reactive thinners with an epoxide function, H) 0 to 10 wt. % of one or more catalysts for the reaction of carboxyl and epoxide groups.

Abstract: A lacquering line and a method of lacquering industrially manufactured products in standard and/or special colours, having one or more guide devices (1) for the industrially manufactured products, having one or more lacquering cabins and having spraying elements (2) disposed along the guide devices (1) inside the lacquering cabins, wherein at least one lacquering cabin comprises one or more lacquering units, having one or more exchangeable small containers (6, 6a), in which the lacquer quantity required for lacquering a predetermined number of individual products is packed ready to apply, as well as having a rinsing device (9), wherein the small containers (6, 6a) and the rinsing device (9) are connectable in each case by a lacquer conveying device (7) and one or more stub lines (8) directly or via a colour changer (11) to the spraying elements.

Abstract: An acid-free, aqueous catalyst paste with a solids content of 30 to 70% by weight and containing dialkyltin oxide and a water-thinnable cationic binder vehicle and which can be used for cathodically depositable electro-dip lacquers, obtainable by a) dispersing dialkyltin oxide in an acid-free aqueous dispersion or solution of one or more hydroxycarboxylic acid salts of bismuth(III) in a weight ratio of tin to bismuth, calculated as the metal, from 1:3 to 3:1, and b) comminuting the preparation obtained with one or more cationic binder vehicles in a weight ratio of dialkyltin oxide plus hydroxycarboxylic acid salt of bismuth(III) to cationic binder vehicle from 0.5:1 to 6:1.

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.

Abstract: Process for the production of glycidyl (meth)acrylate copolymers with a number-average molar mass (Mn) of 1000 to 6000 g/mol by solvent-free, continuous copolymerisation of glycidyl (meth)acrylate with ethylenically unsaturated monomers, in a reaction vessel with feed and discharge means in the presence of a polyester oligomer, wherein polyester oligomer or a mixture of glycidyl (meth)acrylate copolymer and polyester oligomer is initially introduced in a weight ratio of from 95:5 to 50:50 and the glycidyl (meth)acrylates, further monomers, further polyester oligomer and, optionally, free-radical initiators are added, the addition together with discharge of the copolymers formed being effected in such a way that the residence time required for formation of the desired composition is achieved, and wherein, in the event of the initial introduction of the mixture of glycidyl (meth)acrylate copolymer and polyester oligomer, addition is effected in such a way that the ratio between copolymer and oligomer is maintai

Abstract: This invention relates to an aqueous coating medium which contains, as binder vehicles in the form of aqueous polymer dispersions,A) 50 to 90% by weight of one or more thermoplastic copolymers of at least one C2-C4 olefin and at least one vinyl ester of a C2-C11 monocarboxylic acid, wherein the olefin(s) and vinyl ester(s) are present in a ratio by weight of 10:90 to 40:60 and together make up at least 80% by weight of the copolymer,B) 10 to 50% by weight of one or more thermoplastic (meth)acrylic copolymers which are free from comonomers containing nitrile and amide groups, and at least 50% by weight of which consists of (meth)acrylic acid esters of C1-C18 alcohols, andC) 0 to 30% by weight of one or more copolymers which are different from A) and B),wherein the percentages by weight are given with respect to the resin solids in each case and add up to 100% by weight.

Abstract: Method for determining the visual effect of lacquer coatings on plastic surfaces, in which one or more successive lacquer layers is/are each applied onto the entire surface of a substrate consisting of a plastic test sheet joined with a metal test sheet and dried or cured, wherein the two test sheets are joined together in such a manner as to form a common plane, or planes arranged parallel to or optionally partially overlapping each other, one of the lacquer layers is applied in the form of a wedge with a layer thickness gradient, and, on the lacquer coated substrate surface obtained in this manner, one or more surface properties influencing the visual impression is/are then measured at least on the plastic test sheet by means of one or more optical measurement methods at measurement points distributed over the entire area in the form of a grid screen, and, solely on the metal test sheet, the particular thickness of the wedge-shaped lacquer layer is also measured.

Abstract: Novel powder coating compositions containing reactive hyperbranched polymers are disclosed and claimed. Preferred embodiments include powder coating compositions formed from hyperbranched polyesters having terminal hydroxy, carboxy, epoxy, and isocyanate groups. Preferred hyperbranched polyesters are formed from .alpha.,.alpha.-bis-(hydroxymethyl)-propionic acid, which act either as crosslinkers, adhesion promotors, or flow and leveling agents.

Abstract: A method of applying several coats to an electrically conducting substrate by applying a primer coat using electrophoresis, stoving the primer coat, applying directly to the stoved primer coat a colored and/or special effect coating layer made of an aqueous coating material containing color and/or special effect pigments and including as a binder: A) 50 to 85% by weight of one of more hybrid binder vehicles based on polyesters and on (meth)acrylic copolymers with a hydroxyl number of 100 to 350 mg KOH/g and an acid number of 20 to 60 mg KOH/g; B) 0 to 20% by weight of one or more of binder vehicles which are different from A); and C) 15 to 50% by weight of one or more free or blocked polyisocyanates and/or one or more triazine-based components which crosslink with the hydroxyl groups of component A) with the formation of ether and/or ester groups, at least 50% by weight of the (meth)acrylic copolymers of component A) being produced in the presence of at least 20% by weight of the polyester or polyesters of co

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: Process for calculating colour formulations of pigmented special-effect shades wherein i) for each pigment on which a colorant system is based a set of calibration panels is created, and the associated reflection factors are determined experimentally, ii) from the measured reflection factors for each pigment on which the colorant system is based, the optical material parameters are determined using a radiation transport model to describe the diffusion of light in particulate media, iii) from all the platelet-like special-effect pigments on which the colorant system is based and in each case a fixed quantity of one or more colouristically inert topology-influencing fillers, so-called pseudopigments are formed whose optical material parameters are likewise determined by way of a calibration scale, iv) and, the formulation components and pigments and/or associated pseudopigments from a colorant system being specified, the reflection spectra of a special-effect shade which is to be rematched are simulated mathema

Abstract: A coating medium suitable for multilayer coatings, containing, as a binder vehicle:______________________________________ A) 10 to 90% by weight of one or more hydroxy-functional (meth)acrylic copolymers, obtained from a1) 20 to 40% by weight of hydroxyalkyl esters of (meth)acrylic acid a2) 10 to 30% by weight of non-functionalised (meth) acrylates a3) 0 to 5% by weight of unsaturated carboyxlic acids a4) 10 to 60% by weight of non-functionalised monomers a5) 0 to 15% by weight of amino-functional monomers, and a6) 0 to 5% by weight of multiply-unsaturated monomers B) 90 to 10% by weight of hydroxy-functional polyesters, C) 0 to 40% by weight of hydroxy-functional binder vehicles D) 5 to 50% by weight of blocked polyisocyanates, E) 5 to 40% by weight of components based on triazine which crosslink with the hydroxyl groups of components A), B) and C) with the formation of ether and/or ester groups, ______________________________________wherein at least 50% by weight of the (meth)acrylic copolymers, with respec

Abstract: A method of producing a multi-layer coating comprising the application of a color- and/or effect-imparting base lacquer coat of an aqueous base lacquer, the wet-into-wet-application on to the aqueous base lacquer coat of a clear lacquer coat of a two-component polyurethane clear lacquer, which is produced shortly before the application thereof by mixing a master lacquer component, which contains hydroxy-functional binder vehicles and solvents, with a polyisocyanate component, and joint stoving of the aqueous base lacquer and clear lacquer coats, wherein the two-component polyurethane clear lacquer which is used contains 0.01 to 1% by weight, with respect to the clear lacquer solids, of one or more additives with a surface tension-lowering effect, wherein at least 25% by weight of the additives with a surface tension-lowering effect is contained in the polyisocyanate hardener component before mixing.

Abstract: Coating compositions suitable for stoved multi-layer coatings containing as binder:A) 20 to 40 wt. % of hydroxy-functional (meth)acrylic copolymer obtainable from styrene and/or styrene derivatives; hydroxyethyl, hydroxypropyl and/or hydroxybutyl (meth)acrylate; non-functionalised (cyclo)alkyl (meth)acrylates having 8 to less than 18 C atoms in the (cyclo)alkyl residue; (meth)acrylic acid and optionally non-functionalised (cyclo)alkyl (meth)acrylates having up to 7 C atoms in the (cyclo)alkyl residue;B) 20 to 40 wt. % of hydroxy-functional (meth)acrylic copolymer obtainable from hydroxyethyl, hydroxypropyl and/or hydroxybutyl (meth)acrylate; non-functionalised (cyclo)alkyl (meth)acrylates having 8 to less than 18 C atoms in the (cyclo)alkyl residue; non-functionalised (cyclo)alkyl (meth)acrylates having up to 7 C atoms in the (cyclo)alkyl residue and (meth)acrylic acid;C) 0 to 40 wt. % of hydroxy-functional binders other than A) and B),D) 10 to 50 wt. % of free or blocked polyisocyanates, andE) 0 to 40 wt.

Abstract: Aminourethane hardeners, suitable for aqueous epoxide-based coating media, otainable by the reaction ofA) aminourethanes which are obtainable by the reaction ofa) compounds comprising at least one cyclic carbonate group, andb) amines comprising at least one primary amino group wherein the ratio of the number of carbonate groups to that of amino groups is 1:10 to 1:1.1, withB) water-thinnable epoxide compounds, obtainable fromc) polyalkylene polyethers comprising a primary and/or secondary .alpha.-amino group and an .omega.-alkyl ether or aryl ether group and/or polyatkylene polyethers comprising two primary and/or secondary .alpha.,.omega.