Abstract: Water-thinnable polyurethane with at least two free OH groups obtainable from a first conversion of a primary and/or secondary alkanolamine with a NCO compound giving an intermediate product, followed by the addition of a cyclic carboxylic anhydride to the intermediate product; with the NCO compound exhibiting at least one free NCO group and no blocked NCO group; all alkanolamine being converted during the first conversion to the intermediate product such that the nitrogen atom of the alkanolamine reacts with one of the free NCO groups of the prepolymer to form a urea bond; and the cyclic carboxylic anhydride reacting, with ring opening, with the OH group, originating from the alkanolamine, of the intermediate product; and its use for the production of hot curing coating compositions.

Abstract: This invention relates to a method of coating a motor vehicle body including (i) applying as a first layer an electro-dip primer coat; (ii) mixing a water dilutable compensation paint comprising 40 to 80 wt. % binders and a commercial base coat to obtain a mixture, and applying the mixture as a second primer surface layer on said primer coat wherein the primer surface layer applied has a thickness of from 10 to 20 ?m; (iii) applying a third layer consisting of a water soluble base coat; and (iv) applying a covering layer of clear coat.

Abstract: Water-thinnable polyurethane with at least two free OH groups obtainable from a first conversion of a primary and/or secondary alkanolamine with a NCO compound giving an intermediate product, followed by the addition of a cyclic carboxylic anhydride to the intermediate product; with the NCO compound exhibiting at least one free NCO group and no blocked NCO group; all alkanolamine being converted during the first conversion to the intermediate product such that the nitrogen atom of the alkanolamine reacts with one of the free NCO groups of the prepolymer to form a urea bond; and the cyclic carboxylic anhydride reacting, with ring opening, with the OH group, originating from the alkanolamine, of the intermediate product; and its use for the production of hot curing coating compositions.

Abstract: Polymer obtainable by a multistage polymerization process which involves conducting, in a first step, an aqueous-phase polymerization of at least one ethylenically monofunctional compound alone or together with at least one ethylenically difunctional or poly-functional compound together in the presence of a polyesterpolyol, polyurethane and/or polyacrylate; and, in a subsequent step, a reaction of the resulting product with at least one ethylenically monofunctional compound alone or together with at least one ethylenically difunctional or polyfunctional compound; followed by a reaction of the resulting product with a crosslinker; and its use.

Abstract: An aqueous coating composition is provided which includes crosslinkable film-forming resin and about 0.01 to about 25 weight percent on a basis of total resin solids of an amphiphilic adjuvant having an acid value of less than 30, a water-soluble polar end including at least one terminal hydroxyl group and a water-insoluble hydrocarbon end including at least seven contiguous carbon atoms. The coating composition is useful as a monocoat or primer, basecoat or clearcoat in a multi-component composite coating composition for automotive applications.

Abstract: The invention relates to the preparation of a water-dilutable stone impact protection and of a compensation paint and its use and processes for their production, especially in the automobile industry. The water-dilutable stone impact protection paint contains 20 to 60 wt % binder and 2 to 10 wt % pigments and possibly uncoagulated overspray of water-soluble base paints and the compensation paint contains 40 to 80 wt % binder.

Abstract: Polymer obtainable by a multistage polymerization process which involves conducting, in a first step, an aqueous-phase polymerization of at least one ethylenically monofunctional compound alone or together with at least one-ethylenically difunctional or poly-functional compound together in the presence of a polyesterpolyol, polyurethane and/or polyacrylate; followed by a reaction of the resulting product with a crosslinker; and its use.

Abstract: Disclosed is the preparation of a water-dilutable stone impact protection and of a compensation paint and its use and processes for their production, especially in the automobile industry. The water-dilutable stone impact protection paint contains 20 to 60 wt % binder and 2 to 10 wt % pigments and possibly uncoagulated overspray of water-soluble base paints and the compensation paint contains 40 to 80 wt % binder.

Abstract: Coating composition obtainable by mixing a) a composition A containing a dispersion of a polyurethane having an acid number of more than 20 and comprising as its soft segment at least one polytetrahydrofuran segment having a number-average molecular weight of between 650 and 5000 and as its hard segment at least one segment derived from a diisocyanate; with b) a composition B containing a dispersion of a polyurethane having an acid number of less than 20 and comprising as its soft segment at least one polytetrahydrofuran segment having a number-average molecular weight of between 800 and 5000 and as its hard segment at least one segment derived from a diisocyanate.

Abstract: The invention relates to the preparation of a water-dilutable stone impact protection and of a compensation paint and its use and processes for their production, especially in the automobile industry. The water-dilutable stone impact protection paint contains 20 to 60 wt % binder and 2 to 10 wt % pigments and possibly uncoagulated overspray of water-soluble base paints and the compensation paint contains 40 to 80 wt % binder.

Abstract: An aqueous coating composition is provided which includes crosslinkable film-forming resin and about 0.01 to about 25 weight percent on a basis of total resin solids of an amphiphilic adjuvant having an acid value of less than 30, a water-soluble polar end including at least one terminal hydroxyl group and a water-insoluble hydrocarbon end including at least seven contiguous carbon atoms. The coating composition is useful as a monocoat or primer, basecoat or clearcoat in a multi-component composite coating composition for automotive applications.

Abstract: An aqueous coating composition is provided which includes crosslinkable film-forming resin and about 0.01 to about 25 weight percent on a basis of total resin solids of an amphiphilic adjuvant having an acid value of less than 30, a water-soluble polar end including at least one terminal hydroxyl group and a water-insoluble hydrocarbon end including at least seven contiguous carbon atoms. The coating composition is useful as a monocoat or primer, basecoat or clearcoat in a multi-component composite coating composition for automotive applications.

Abstract: The invention relates to aqueous coating compositions comprising:an aqueous, polyester- and acrylate-based polymer dispersion obtainable by free-radical polymerization of at least:a. one (meth)acrylic acid ester;b. one ethylenically unsaturated, at least monofunctional acid; and optionallyc. one ethylenically unsaturated monomer other than (a) and (b)or mixtures thereof, with a poly ester resin capable of undergoing a free-radical polymerization;one amino resin as crosslinking agent,one water-soluble and/or water-emulsifiable polyalcohol and optionally conventional laquer additives.Furthermore, the invention relates to the use of these aqueous coating compositions as clear coats for the preparation of multi-layer coatings.

Abstract: A microgel obtained by polymerizing in aqueous phase a monomer blend comprising at least one ethylenic monofunctional compound, selected from the group consisting of vinylic compounds, alkyl esters of acrylic or methacrylic acid, hydroxyalkyl (meth)acrylates and vinyl acetate, and at least one ethylenic di- or multifunctional compound, selected from the group consisting of diacrylates, triacrylates and/or (meth)acrylates of polyfunctional alcohols, in the presence of a polycondensation product of a polycarboxylic acid, polyhydroxycarboxylic acid, hydroxypolycarboxylic acid and/or polyhydroxypolycarboxylic acid with a polyol, and its use for aqueous or solvent-containing coating compositions, in particular for aqueous or solvent-containing base coats, effect base coats or clear coat systems in the motorcar industry.

Abstract: The invention relates to an aqueous polyester- and acrylate-based polymer dispersion, obtainable by free radical-initiated polymerization of at least(a) one (meth)acrylic acid ester,(b) one ethylenically unsaturated, at least monofunctional acid, and optionally(c) one ethylenically unsaturated monomer other than (a) and (b),or mixtures thereof with a polyester resin capable of undergoing a free radical-initiated polymerization. The invention further relates to the production of these aqueous polymer dispersions, to aqueous clear coat compositions containing said dispersions, and to the use thereof.

Abstract: The invention relates to a basecoat/clearcoat process in which the basecoat composition used contains as a film former a polyurethane resin which can be prepared by preparing an intermediate from(A) a mixture obtained from 10 to 90 mol % of linear polyether diols and 90 to 10 mol % of polyester diols,(B) diisocyanates,(C) compounds which contain two groups reactive toward isocyanate groups, at least some of these compounds having at least one group capable of forming anions,and the free isocyanate groups of the said intermediate are then reacted with(D) polyols containing at least three hydroxyl groups, and the reaction product obtained in this manner is transferred into an aqueous base, whereina) the polyester diol is prepared from diols and an acid component which consists of 60 to 100% by weight of aliphatic dicarboxylic acids of more than 18 carbon atoms and of 40 to 0% by weight of aliphatic dicarboxylic acids of 2 to 18 carbon atoms,b) the equivalent ratio of the NCO groups to the total of the OH groups

Abstract: The invention relates to aqueous dispersions of cross-linked polymer microparticles, prepared in an aqueous medium from a polymer, optionally dissolved in an organic solvent, said polymer bearing at least two hydroxyl groups and comprising a number of ionic groups sufficient for the formation of a stable aqueous dispersion, as the component (A) and one further component (B) at an elevated temperature, characterized in that component (A) is a polyesterpolyol, a polyurethane or a polyacrylate having an acid value of from 5 to 168, and that component (B) is an aminoplast resin consisting of molecules containing at least two reactive groups consisting of hydroxyl and/or amino and/or ether groups, that the ratio by weight of component (A) to component (B) is between 30:70 and 95:5, and that the dispersion is stable and usable in water and/or an organic solvent or mixtures thereof.

Abstract: The invention relates to a basecoat/clearcoat process in which the basecoat composition used contains as a film former a polyurethane resin which can be prepared by preparing an intermediate from(A) a mixture obtained from 10 to 90 mol % of linear polyether diols and 90 to 10 mol % of polyester diols,(B) diisocyanates,(C) compounds which contain two groups reactive toward isocyanate groups, at least some of these compounds having at least one group capable of forming anions, and the free isocyanate groups of the said intermediate are then reacted with(D) polyols containing at least three hydroxyl groups, and the reaction product obtained in this manner is transferred into an aqueous base, whereina) the polyester diol is prepared from diols and an acid component which consists of 60 to 100 % by weight of aliphatic dicarboxylic acids of more than 18 carbon atoms and of 40 to 0 % by weight of aliphatic dicarboxylic acids of 2 to 18 carbon atoms,b) the equivalent ratio of the NCO groups to the total of the OH gro

Abstract: The invention relates to water-thinnable baking paints, the use thereof as filler material and intermediate stone chip resistant coat as well as a process for painting motor vehicle bodies.The water-thinnable baking paints comprise as binders a combination of(I) 20 to 70% by weight of a water-thinnable polyurethane resin with an acid value of 15 to 35,(II) 20 to 70% by weight of an epoxy resin-modified water-thinnable polyester which can be prepared by reacting a polyester (A) with a molecular weight (number average) below 2000, an acid value of 35-240 and a hydroxyl value of 56-320, with 0.3 to 1.

Abstract: The invention relates to coating compositions which are particularly suitable for the preparation of the basecoat for two-coat coatings of the basecoat/clearcoat type, and which comprise organic diluents, at least one resin containing urethane and urea groups, and, where appropriate, other resins, pigments and other conventional additives in common use.