Abstract: The present invention relates to aqueous non-ionically hydrophilised binding-agent dispersions based on polyurethane ureas with terminal polyethylene-oxide groups, to the preparation thereof, and to the use thereof for producing coatings.

Abstract: The present invention relates to aqueous non-ionically hydrophilised binding-agent dispersions based on polyurethane ureas with terminal polyethylene-oxide groups, to the preparation thereof, and to the use thereof for producing coatings.

Abstract: Coating compositions that are stable to thermal yellowing that include coating materials containing I) one or more dispersions of hydroxyl-free polyurethanes and/or polyurethane-ureas, II) one or more aqueous solutions or dispersions of ionically modified, hydroxyl-containing polyurethanes and/or polyurethane-ureas, other than the constituents of component I), and III) at least one crosslinker.

Abstract: The present invention relates to a binder composition containing A) at least one aqueous polyurethane-polyurea dispersion and B) at least one stabilizer containing a) at least one amine having a structural unit corresponding to formula (I) ?which has no hydrazide groups, b) at least one compound having a structural unit corresponding to formula (II) —CO—NH—NH—??(II) ?and c) optionally a stabilizing compound other than a) and b). The polyurethane dispersions are manufactured in the presence of components a) and b). It is possible for components a) and b), depending on the grade used, to be incorporated into the polymer framework as structural units.

Abstract: Blocked polyisocyanates and one-component stoving systems containing these blocked polyisocyanates, and the preparation thereof and their use for the preparation of lacquers, paints, adhesives and elastomers. The blocked polyisocyanates are derived from polyisocyanates reacted with secondary amines and cationic, anionic and/or nonionic hydrophilizing agents such that they are incorporated into the polyisocyanate at a ratio of from 20:1 to 1:1, wherein the blocking agents correspond to the formula R1–R4 can be identical or different and independently of one another denote hydrogen, C1–C6-alkyl or C3–C6-cycloalkyl, R5 denotes C1–C10-alkyl, C3–C10-cycloalkyl, and B represents ?wherein R6–R8 can be identical or different and independently of one another denote C1–C6-alkyl and/or C1–C6-cycloalkyl, R9 denotes hydrogen or C3–C6-alkyl or C3–C6-cycloalkyl.

Abstract: The present invention relates to a water vapor-permeable coating composite containing one or more flexible substrates, which are coated on one or both sides with one or more identical or different coating compositions, provided that at least one coating composition contains, as binder, a silica sol-modified aqueous polymer dispersion prepared from unsaturated monomers.

Abstract: The present invention relates to aqueous silica sol-modified PU dispersions and their use as coating materials, in particular [lacuna] textiles and leather.

Abstract: The present invention relates to a water-dispersible crosslinker composition containing

Abstract: The present invention relates to aqueous polyurethane dispersions wherein the polyurethanes are reaction products of A) at least difunctional polyols having a molecular weight of 500 to 6000, B) at least difunctional low molecular weight alcohols, C) di- and/or trifunctional isocyanates and D) compounds with an acid group and one or two hydroxy- and/or primary or secondary amino groups in an amount sufficient to provide an acid number, based on resin solids, of <25 mg KOH/g of substance, wherein i) the neutralizing agent is added in an amount sufficient to neutralize 40 to 105% of the acid groups and an amount sufficient to neutralize at least 60% of the acid groups is added prior to the chain extension reaction, ii) at least 1 wt. % of components A) and B), based on the total weight of components A) to D), are tri- or higher-functional compounds and iii) the polyurethane contains 1 to 4 wt. % of the urea groups formed by the reaction of water and isocyanate groups.

Abstract: The invention relates to an aqueous 2-component polyurethane (PU) coating composition comprising a vinyl polymer polyol dispersion, having a hydroxyl number between 10 and 264 mg KOH/g solid resin, an acid value (calculated from the sum of neutralized and non-neutralized acid groups) between 0 and 55 mg KOH/g solid resin, a number-average molecular weight Mn of at least 5000 g/mol and a weight average molecular weight Mw of at least 30,000 g/mol, a glass transition temperature of at least 20° C. and an average particle diameter of no greater than 300 nm, which is prepared in the presence of 0.1 to 10.0 wt. %, relative to the sum of the solids contents of polymer polyol and polyisocyanate, of a non-ionic polyether surfactant and a polyisocyanate having a viscosity at 23° C. of no more than 12,000 mPa*s and either a non-hydrophilic or a non-ionically or anionically hydrophilic character, whereby the equivalent ratio of isocyanate groups of component b) to hydroxyl groups of component a) is 0.

Abstract: The present invention relates to radiation curable aqueous polyurethane dispersions containing 0.05 to 20 wt. %, based on the weight of the non-aqueous constituents of the aqueous polyurethane dispersions, of 2,2-dimethyl-3-hydroxypropionic acid-(2,2-dimethyl-3-hydroxypropyl ester), (HPSNPG, calculated as MW 204.3). The invention also relates to substrates coated with these polyurethane dispersions, in particular to coated wood substrates with good grain enhancing properties.

Abstract: The present invention relates to coating compositions comprising a mixture of at least two aqueous, anionic polyurethane polyurea dispersions A and B, wherein dispersion A as a dry film has a TG in the range from −30° C., to −45° and dispersion B as a dry film has a first TG in the range from −30° C. to −45° C. and a second TG in the range from +45° C. to +60° C., and the mixture of A and B as a dry film has only one TG in the range from −30° C. to −45° C.

Abstract: The present invention relates to compositions that may be cured under the action of UV radiation and contain A) 40 to 80 parts by weight of a polyester resin component containing one or more ethylenically unsaturated polyester resins prepared from a carboxylic acid component containing a 1,2-alkenyl dicarboxylic acid monodicyclopentenyl ester and fumaric acid, maleic acid and/or maleic anhydride and an alcohol component containing a dyhydric alcohol, B) 20 to 60 parts by weight of a copolymerizable monomer such as styrene and C) 0.1 to 10 parts by weight of a photoinitiator. The present invention also relates to coated substrates, in particular wood or imitation wood, prepared from these compositions at an application viscosity of less than 60 seconds measured at 23° C. in a DIN 4 cup to DIN 53211 under the action of UV radiation.

Abstract: The present invention relates to a process for the preparation of epoxy(meth)acrylates by simultaneously reacting 1 equivalent of organic compounds containing epoxide groups with A) 0.8 to 1.2 moles of organic dicarboxylic anhydrides having a molecular weight from 98 to 166 and B) 0.8 to 1.2 OH equivalents of OH group-containing reaction products, which are prepared at a COOH/OH equivalent ratio of 0.6:1 to 0.95:1, of a) (meth)acrylic acid and b) tri- or tetrahydric ether alcohols having a molecular weight of 180 to 1000 and containing at least two ethylene and/or propylene oxide units as part of an ether structure.

Abstract: UV-curable coating compositions containing urethane acrylates prepared from hydroxyalkyl acrylates and low-viscosity polyisocyanates having isocyanurate groups, low-viscosity acrylic ester components as reactive diluents, initiators, and optionally solvents and/or other known additives, and their use for coating molded articles of thermoplastic polycarbonates.

Abstract: Aqueous polyurethane dispersions containing a polyurethane, composed of a) at least one polyol having an average molecular weight, determined as the number average, of 500-6000 g/mol, preferably 1000 to 4000, in particular 1500 to 3000 g/mol, b) at least one polyol, preferably diol, having a molecular weight of less than 500 g/mol, preferably of 61 to 499 g/mol, c) at least one aliphatic polyisocyanate, preferably diisocyanate, d) at least one diol having a molecular weight of less than 450 g/mol, which carries one or more ionic groups and/or one or more potentially ionic groups, preferably at least one carboxyl group, e) at least one amine which is reactive towards NCO groups, carries hydroxyl groups and has an OH functionality of 1 to 6, f) water and optionally g) a monoalcohol, characterized in that the molar ratio of polyol of the component a) to the sum of the polyols b) and d) is 1:1.

Abstract: UV-curable coating compositions containing urethane acrylates prepared from hydroxyalkyl acrylates and low-viscosity polyisocyanates having isocyanurate groups, low-viscosity acrylic ester components as reactive diluents, initiators, and optionally solvents and/or other known additives, and their use for coating molded articles of thermoplastic polycarbonates.

Abstract: The present invention relates to a process for recovering and recycling the organic binder components accumulating during the spraying of a solvent-containing, two-component polyurethane coating or a solvent-containing, moisture-curing one-component polyurethane coating byi) forming a coatings slurry containing the organic binder components, water and a coagulating agent,ii) mixing the coatings slurry, optionally after removing a portion of the water, with an organic solvent which is inert towards isocyanate groups,iii) reacting the free isocyanate groups present in the mixture obtained in step (ii) with a compound containing one isocyanate-reactive group which is more reactive with isocyanate groups than both water and the isocyanate-reactive component of the two-component polyurethane coating, if present, andiv) removing any remaining water and insoluble components from the organic phase accumulating in step (iii) and recovering the organic phase containing the organic binder components.

Abstract: The present invention relates epoxy(meth)acrylates which are substantially free from epoxide groups and are the reaction products of organic compounds containing epoxide groups and having a number average molecular weight (Mn) of 130 to 1000 with I) compounds containing carboxyl and ester groups at an equivalent ratio of carboxyl groups to epoxide groups of 0.7:1.0 to 1.0:1.0, wherein compounds I) are reaction products of A) organic dicarboxylic acids or dicarboxylic acid anhydrides having a molecular weight of 98 to 164 with B) reaction products containing alcoholic hydroxyl groups and prepared at a COOH/OH equivalent ratio of 0.6 to 0.