Abstract: Photopolymeric letterpress printing plates which are to be developed with water or water/alcohol mixtures after imagewise exposure and have, arranged one on top of the other on a dimensionally stable substrate, a layer (A) which may be bonded to the dimensionally stable substrate by an adhesion-promoting layer and is crosslinkable by actinic radiation, a layer (B) which is sensitive to IR radiation and, if required, a parting layer arranged between layer (A) and layer (B), and a peelable protective film applied to the layer (B), are produced by a process in which the layer (A) contains a mixture of at least one polymeric binder which is soluble or dispersible in water or water/alcohol mixtures, copolymerizable ethylenically unsaturated organic compounds which are compatible with the polymeric binder and a photoinitiator, the layer (B) sensitive to IR radiation has an optical density ≧2.

Abstract: Photopolymeric gravure printing plates which are to be developed with water or water/alcohol mixtures after imagewise exposure and have, arranged one on top of the other on a dimensionally stable substrate, a layer (A) which may be bonded to the dimensionally stable substrate by an adhesion-promoting layer and is crosslinkable by actinic radiation, a layer (B) which is sensitive to IR radiation and, if required, a parting layer arranged between layer (A) and layer (B), and a peelable protective film applied to the layer (B), are produced by a process in which the layer (A) consists of a mixture of at least one polymeric binder which is soluble or dispersible in water or water/alcohol mixtures, copolymerizable ethylenically unsaturated organic compounds which are compatible with this polymeric binder, a photoinitiator or photoinitiator system and, if required, further assistants, the parting layer which may be arranged between layer (A) and layer (B) is oxygen-permeable and the layer (B) sensitive to IR radiat

Abstract: The invention relates to cathodically depositable, aqueous electrodeposition coating materials which are characterized in that they contain particles of wax having a diameter of from 1 to 20 .mu.m.

Abstract: The present invention relates to a process for the preparation of a multicoat refinish, in which process a metallic basecoat is applied by spraying to the pretreated old finish and dried and then a clearcoat is applied to the basecoat and the clearcoat is dried together with the basecoat. The process is characterized in that the aqueous basecoat composition is applied such thata) in a first spray pass the aqueous basecoat composition is applied to the pretreated area of the old finish until a boundary is reached,b) the area of the old finish coated in step (a) is then coated in a second spray pass with the aqueous basecoat composition,c) steps (a) and (b) of the process are repeated in the region of the old finish which adjoins the previously coated region of the old finish, again until a boundary is reached, andd) process step (c) is carried out until the entire component to be coated is provided with a basecoat.

Abstract: The present invention relates to a process for the production of a powder coating, in which a suspension of powder particles is sprayed and the spray jet is directed onto the substrate to be coated, characterized in that1.) a suspension of powder particles in a liquefied gas is employed, the gas having been liquefied under a pressure of not more than 20 bar, and2.) the liquid gas is vaporized before, during or after the spraying of the suspension.

Abstract: Provided are aqueous paints with which paint films which have excellent paint film properties such as water resistance and resistance to chemical attack, and excellent finished appearance are obtained, and which have excellent painting operability and storage stability. The invention further provides water dispersible acrylic based graft copolymers, aqueous paints incorporating same and a method to make such paints, wherein an unsaturated bond-containing acrylic based copolymer (a) obtained by reacting an acrylic based copolymer (a1) of acid value 35-120 mg.KOH/gram, hydroxy group value 50-150 mg.KOH/gram, glass transition temperature -20.degree.-+50.degree. C. and number average molecular weight 4500-9000 and an unsaturated monomer mixture (a2), which has functional groups which can react with hydroxy groups, in a mol ratio of a2/a1=0.4-1.

Abstract: The invention relates to a process for the production of a multicoat finish, in which a pigmented basecoat is applied, dried and coated over with a powder clearcoat, and subsequently basecoat and powder clearcoat are stoved together. The invention is characterized in that the powder clearcoat employed has a particle size distribution in whicha) no more than 15% by weight of the powder clearcoat particles have a particle size smaller than 10 .mu.m;b) for at least 40% by weight of the powder clearcoat particles the common logarithm of the quotient of the largest and the smallest particle size is less than or equal to 0.25; andc) at least 98% by weight of the powder clearcoat particles have a particle size smaller than 100 .mu.m.

Abstract: The invention relates to a method for the production and repair of multicoat special-effect coatings, in which the basecoats is produced exclusively by elecrostatic ?sic! spraying, a coating material with a specific rheological behavior is employed as the basecoats and the repair is carried out with the aid of a spray application process in which a spray jet is produced which is distinguished in thatat most 40% of the coating droplets passing a measurement point which lies at the center of the spray jet and 300 mm away from the nozzle have a diameter which is less than 20 .mu.m and at least 5% of the coating droplets have a diameter which is greater than 60 .mu.m,at least 20% of the coating droplets passing the measurement point have a speed which is less than 6 m/s and at most 30% of the coating droplets have a speed of more than 10 m/s, andthe coating droplets have a momentum which is equal to at least 4.times.10.sup.-5 g cm s.sup.

Abstract: The present invention relates to a mixer system for the production of water-thinnable coating compositions having a precisely defined color shade, from various base colors, which mixer system is characterized in that it comprisesA) various base colors A which contain less than 5% by weight of water, at least one color and/or effect pigment, organic solvent, at least one water-dilutable or water-dispersible acrylic polyurethane resin (A1) and/or polyacrylate resin (A2) and optionally auxiliaries and additives, andB) at least one pigment-free component B which contains water.The present invention also relates to a process for the production of coating compositions using this mixer system and to the use of the mixer system for the production of aqueous basecoats for the coating of automobile bodies and/or plastic parts, in particular for automotive refinishing.

Abstract: The invention relates to a process for the production of two-coat finishes, in which a pigmented aqueous basecoat is applied, the basecoat obtained is coated over with a clearcoat, and basecoat and clearcoat are baked together. The process according to the invention is distinguished in that the aqueous basecoat contains a polyacrylate resin which has been prepared using furfuryl acrylate and/or furfuryl methacrylate.

Abstract: The present invention relates to an aqueous multicomponent polyurethane coating composition comprisingA) a water-dilutable polyaddition resin (A1) and/or polycondensation resin (A2) containing hydroxyl and carboxylate groups and having an OH number of from 40 to 200 mg of KOH/g, preferably from 60 to 140 mg of KOH/g, an acid number of from 15 to 100 mg of KOH/g, preferably from 25 to 50 mg of KOH/g, and a glass transition temperature of from -40.degree. C. to +60.degree. C., preferably from -20.degree. C. to +40.degree. C.,B) a polyisocyanate component (B) as crosslinking agent andC) at least one additive,characterized in that it contains as additive a carbodiimide component (C) which has a content of carbodiimide groups --N.dbd.C.dbd.N-- of from 2 to 30% by weight, on average at least 0.

Abstract: The invention relates to a process for the preparation of articles with a three-dimensional surface structure, in which a substrate is printed, at least one of the printing inks employed for the printing being varnish-repellent, and the printed substrate is then varnished. In accordance with the invention, the printed substrate is varnished with a radiation-curable varnish which contains no amino resin and comprisesA) from 18 to 99.9% by weight of an epoxy acrylate, a polyether acrylate or a polyester acrylate,B) from 0.1 to 5.0% by weight of a Bronsted acid or an acid anhydride,C) from 0 ?sic! to 12% by weight of a photoinitiator,D) from 0 to 40% by weight of water or at least one organic solvent,E) from 0 ?sic! to 10% by weight of a polyol which may be ethoxylated and/or propoxylated and has from 2 to 50 carbon atoms in the molecule, andF) from 0 ?sic! to 30% by weight of other auxiliaries and additives,and the varnish coat applied is cured with high-energy radiation.

Abstract: Provided are compositions useful as paints which have excellent acid resistance and scratching resistance, and provide a good appearance. The thermoset compositions are comprised of a vinyl copolymer (A) comprised of lactone modified acrylic monomer and other monomer, a blocked polyisocyanate compound (B) which has been reacted with a mixture of malonic acid and acetoacetic acid, and an alkyl etherified amino resin (C).

Abstract: The invention relates to a method for the production and repair of multicoat special-effect coatings, in which the basecoat is produced exclusively by elecrostatic spraying, a coating material with a specific rheological behavior is employed as the basecoat and the repair is carried out with the aid of a spray application process in which a spray jet is produced which is distinguished in thatat most 40% of the coating droplets passing a measurement point which lies at the center of the spray jet and 300 mm away from the nozzle have a diameter which is less than 20 .mu.m and at least 5% of the coating droplets have a diameter which is greater than 60 .mu.m,at least 20% of the coating droplets passing the measurement point have a speed which is less than 6 m/s and at most 30% of the coating droplets have a speed of more than 10 m/s, andthe coating droplets have a momentum which is equal to at least 4.times.10.sup.-5 g cm s.sup.

Abstract: The present invention relates to water-dilutable polyurethane resins which are characterized in that they have been prepared using diols of the formula (I) ##STR1## in which R.sub.1 and R.sub.2 are an identical or different radical and are an alkyl radical having 1 to 18 carbon atoms, an aryl radical or a cycloaliphatic radical, with the proviso that R.sub.1 and/or R.sub.2 may not be methyl,and/or diols of the formula (II) ##STR2## in which R.sub.3, R.sub.4, R.sub.6 and R.sub.7 are each identical or different radicals and R.sub.3, R.sub.4, R.sub.6 and R.sub.7 are an alkyl radical having 1 to 6 carbon atoms, a cycloalkyl radical or an aryl radical and R.sub.5 is an alkyl radical having 1 to 6 carbon atoms, an aryl radical of an unsaturated alkyl radical having 1 to 6 carbon atoms, and n is either 0 or 1.

Abstract: Water dilutable binders, prepared by subjecting to free radical polymerization(A) from 20 to 90% by weight of a mixture of(a1) from 3 to 50% by weight of acrylic acid, methacrylic acid or a mixture of acrylic acid and methacrylic acid, and(a2) from 50 to 97% by weight of an ethylenically unsaturated monomer or a mixture of ethylenically unsaturated monomers,in the presence of(B) from 9.9 to 79.9% by weight of a halogen-free polyolefin free from maleic anhydride groups, or a mixture of halogen-free polyolefins free from maleic anhydride groups, and(C) from 0.1 to 10% by weight of a free radical initiator or a mixture of free radical initiatorsand, after neutralization of at least 20% of the carboxyl groups contained in the resulting polymerization product, dispersing the polymerization product in water, the sum of the percentages by weight of components (A), (B) and (C) and (a1) and (a2) in each case always being 100% by weight.

Abstract: The present invention relates to a process for the production of sealed packaging containers of plastics films, using a sealing coating based on an aqueous dispersion or solution of acrylate copolymer, where the aqueous dispersion of acrylate copolymer is prepared by emulsion polymerization offrom 1 to 15% by weight of .alpha.,.beta.-ethylenically unsaturated carboxylic acids,from 40 to 69% by weight of alkyl esters of acrylic acid having 1-12 carbon atoms in the alkyl radical,from 0 to 55% by weight of alkyl esters of methacrylic acid having 1-12 carbon atoms in the alkyl radical and/or vinylaromatics, andfrom 0 to 25% by weight of further monomers,the sum of the monomers in each case being 100% by weight. The glass transition temperature being not more than 50.degree. C.

Abstract: The present invention relates to addition products ofA) oligomers having at least two acrylic ester and/or methacrylic ester groups per molecule andB) diamines having a primary and a tertiary amino group,the ratio of primary amino groups of B) to the (meth)acrylic double bonds of A) being 0.01:1 to 0.2:1, preferably 0.03:1 to 0.1:1.The invention also relates to processes for the preparation of the addition products, to radiation-curable surface coating compositions based on the addition products and to the use of the surface coating compositions for woodcoating and papercoating.

Abstract: The present invention relates to a process for the preparation of an aqueous coating composition containing a carboxyl-containing epoxy resin having an acid number in the range from 5 to 200 mg of KOH/g and having an epoxide equivalent weight in the range from 1000 to 40,000, optionally crosslinking agents, organic solvents, optionally conventional assistants and additives, and optionally pigments and fillers. The organic binder solution is neutralized using a tertiary amine in the temperature range from 60.degree. C. to 120.degree. C. This is followed by dispersion in water, with the proviso that at least 95% of the epoxide groups of the epoxy resin have been reacted. The aqueous coating compositions prepared by the process are preferably used for coating cans.

Abstract: To form multi-layer paint films which have a good finished appearance on objects which are to be painted, using an aqueous base coat composition. An aqueous base coat composition which contains aqueous polyurethane resin and rheology control agent, the electrical conductivity measured in an aqueous solution of 3% by weight concentration of which is 700-900 mS/cm, is painted and then the paint film is formed, a transparent top coat is painted on the base coat paint film obtained in this way, and the base coat and the top coat are baked at the same time.