Abstract: A composite fiber of at least two different polymers, one of which is water-insoluble and selected from the group consisting of polyester, polyamide and copolymers therefrom and the other is water-dissipatable, having a plurality of at least 19 segments of the water-insoluble polymer, uniformly distributed across the cross-section of the fiber and being surrounded by the water-dissipatable polymer, a process for the manufacture of such a fiber and a process for the manufacture of microfibers therefrom.

Abstract: The present invention relates to a process in which1. a water-dilutable basecoat composition is applied which contains at least one water-dilutable binder, metallic pigments, if desired color pigments, if desired conventional auxiliaries and additives and up to 20% by weight of organic solvents,2. a polymer film is formed from this basecoat composition,3. a transparent topcoat containing a polymer containing silyl groups and obtainable by copolymerization of p1 p.sub.1) 0.1 to 40% by weight of ethylenically unsaturated silane monomers of the general formula ##STR1## where R.sup.1 is alkyl, aryl, acyl, aralkyl having 1 to 10 carbon atomsR.sup.2 is an organic radical having a polymerizable double bondX is a hydrolyzable groupn is 1, 2 or 3p.sub.2) 5 to 30 % by weight, preferably 8 to 25% by weight, of monomers having at least 2 polymerizable ethylenically unsaturated double bonds andp.sub.

Abstract: The present invention relates to coating agents containingA) one or more polymers containing carboxyl groups and having a number-average molecular weight of 500 to 8,000 and an acid number of 15 to 200 mg of KOH/g as the essential binder component andB) one or more compounds containing epoxide groups as crosslinking agents,wherein the compound B containing epoxide groups is a copolymer containing epoxide groups, has a number-average molecular weight M.sub.n of 300 to 5,000, preferably 500 to 3,500, and a heterogeneity (M.sub.w /M.sub.n), measured by gel permeation chromatography, of .ltoreq.3, preferably of .ltoreq.2, and has been prepared by continuous bulk polymerization at temperatures between 130.degree. and 350.degree. C. and pressures above 1 bar.The invention also relates to processes for the preparation of the coating agent and the use of the coating agents in automobile refinishing.

Abstract: The invention relates to a process for the production of a multi-layered coating in which the aqueous top coating composition contains a water-dilutable polyacrylate resin which has a hydroxyl number of 40 to 200, an acid number of 20 to 100 and a glass transition temperature (T.sub.G) of -40.degree. C. to +60.degree. C. and can be prepared by adding a mixture (I) of a (meth)acrylic acid ester and a copolymerizable monomer containing hydroxyl groups to an organic solvent, subjecting the mixture to free radical polymerization and, when the addition of mixture (I) has ended, adding a monomer containing carboxyl groups and polymerizing the mixture further.

Abstract: The invention relates to a process for the preparation of a multicoat coating which uses an aqueous, clear topcoat composition containing a polyacrylate resin as binder. The polyacrylate resin can be obtained by adding an ethylenically unsaturated monomer (a1) which contains carboxyl groups, and a mixture (b) consisting of (meth)acrylic esters which are free from carboxyl groups and of ethylenically unsaturated monomers which contain hydroxyl groups, to an organic solvent or mixture of solvents either successively or alternately in part amounts and polymerizing the mixture in the presence of a radical-forming initiator, neutralizing the resultant polyacrylate resin after termination of the polymerization and dispersing it in water. The type and amount of (a1) and (b) are chosen such that the polyacrylate resin has a hydroxyl value of 40 to 200, an acid value of 20 to 100 and a glass transition temperature (T.sub.G) of -40.degree. C. to 60.degree. C.

Abstract: The invention relates to a cathodic electro-dipcoating process, wherein the electro-dipcoating composition used contains a cationic, amine-modified epoxy resin, which is obtainable by reacting(A) a polyepoxide,(B) an amine and(C) an adduct, which is obtainable by . . . (sic)(c1) a polyether- or polyester-polyol,(c2) a polyisocyanate and(c3) a compound which contains at least one hydrogen atom which is reactive towards isocyanate groups and at least one ketimine group in the molecule, and/or(D) a hydrolysis product of (C)with one another in a relative proportion such that 20 to 90% of the epoxy groups of component (A) are reacted with component (B) and the remaining epoxy groups are reacted with component (C) and/or (D), and--if still necessary--at least partially protonating the reaction product thus obtained.

Abstract: A process for the manufacture of reflectors, in particular reflectors for automotive vehicle headlamps, wherein a metallic film is applied to a metallization primer cured by UV or electron radiation. The radiation-curable metallization primer comprisesA) 10 to 50% by weight of an acrylate copolymer containing ethylenically unsaturated side chains and having a number average molecular weight of 6,000 to 14,000,B) 4 to 50% by weight of a mixture ofb1) 2 to 20% by weight of a monomer or oligomer containing three acryloyl groups,b2) 2 to 20% by weight of a polyethylenically unsaturated aliphatic oligomer of the formula (I) ##STR1## b3) 5 to 20% by weight of a difunctional acrylic carbonate monomer, C) 1 to 8% by weight of a photoinitiator,D) 0 to 5% by weight of customary auxiliaries and additives, andE) 0 to 60% by weight of one or more solvents inert toward components A-D the components A to E in each case totalling 100% by weight.

Abstract: The invention relates to a process for the coating of electrically conducting substrates in which(1) the substrate is immersed in an aqueous electrocoating paint comprising at least one cathodically depositable resin,(2) the substrate is connected as cathode,(3) a film is deposited on the substrate using direct current,(4) the substrate is removed from the electrocoating paint and(5) the deposited paint film is baked.In this invention an electrically conducting substrate coated by a coating produced by plasma polymerization is employed as substrate.

Abstract: The present invention is directed to an aqueous anionic polyurethane dispersion, obtainable bya) dispersing a polyurethane resin, having carboxylic acid groups, in water in the presence of a tertiary amine andb) reacting the carboxylic acid groups on the polyurethane resin with an organic compound having at least two oxirane groups,a basecoat containing said dispersions,a method of coating a substrate with said basecoat and a coated substrate.

Abstract: The present invention is directed to a process for the preparation of amine modified copolymers as a pigment dispersant for cathodic electrocoating compositions comprising the steps ofa) polymerizingi) an ethylenically unsaturated monomer containing an isocyanate group withii) other ethylenically unsaturated monomers having no functional group capable of undergoing a reaction with said isocyanate group to form a copolymer with isocyanate groups andb) reacting stepwise or simultaneously said isocyanate groups withiii) a compound selected from the group consisting of a polyalkyleneglycol monoalkyl ether, an aminoterminated polyalkylene glycol monoalkyl ether and mixtures thereof andiv) a compound containing at least a tertiary amine group and one functional group capable of undergoing a reaction with said isocyanate group andv) optionally, another compound having one functional group capable of undergoing a reaction with said isocyanate group.

Abstract: The present invention relates to a liquid, radiation-curable coating composition for the coating of glass surfaces which comprisesA) 56 to 89% by weight of at least one diethylenically unsaturated polyurethane optionally containing urea groups,B) 3 to 30% by weight of at least one ethylenically unsaturated monomer,C) 0.5 to 8% by weight of at least one photoinitiator andD) 0.05 to 6% by weight of an alkoxysilane,the sum total of the components A to D being 100% by weight in each case.The coating composition uses1.) one or more ethylenically unsaturated monomers containing carboxyl groups, optionally together with other ethylenically unsaturated monomers as the component B and2.) an alkoxysilane containing epoxide groups as the component D.These coating compositions are employed for the coating of glass surfaces, in particular of optical glass fibers, and are distinguished by good adhesion even under humid conditions.

Abstract: The invention relates to copolymers containing amino groups and having an amine number of 30 to 150 mg of KOH/g and a number-average molecular weight of 1,500 to 8,000, which can be prepared from copolymers containing alkyl ester groups by aminolysis with polyamines, processes for their preparation and their use in coating agents.

Abstract: The present invention relates to a process for coating finish foils and endless edges, wherein an acid-curing aqueous coating composition, on the basis of aminoplast resin/compound containing hydroxyl groups/self-crosslinking acrylate dispersion, is applied and baked in. The coating composition used contains 5 to 20% by weight of one or more fillers of a mean particle size from 0.015 to 10 .mu.m, a maximum particle size of .ltoreq.40 .mu.m and a density of .ltoreq.2.9 g/cm.sup.3.The invention also relates to the coating compositions positions used in the process and to finish foils and endless edges produced by the process, which especially have the advantage of an extremely low formaldehyde emission, particularly as a composite with a low-formaldehyde chipboard.

Abstract: The invention relates to a coating composition containingA) 50 to 90% by weight of one or more hydroxyl-containing addition polymers, prepared by copolymerization of ethylenically unsaturated monomers which are in part hydroxyalkyl esters of .alpha.,.beta.-ethylenically unsaturated carboxylic acids andB) 10 to 50% by weight of one or more amino resin crosslinking agentsthe sum of the proportions by weight of A and B being 100% by weight, and suitable auxiliaries and additives, optionally pigments, optionally fillers, organic solvent and an acid catalyst.The coating composition is one wherein the acid catalyst used comprises1) sulfo- or sulfonio[sic]-succinic esters which each contain at least one hydroxyl group and/or2) sulfo- or sulfonio[sic]-succinic polyesters which each contain at least one hydroxyl group.The invention furthermore relates to a process for the preparation of the coating compositions according to the invention and to their use as an automobile repair finish or as a stoving paint.

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 water-dispersible binders for cationic electrocoating paints, a process for the preparation of these binders and a process for electrophoretic coating of an electrically conducting substrate, connected as cathode, from an aqueous bath based on this binder.The water-dispersible binders are reaction products of(A) epoxy resins containing low-molecular, preferably aromatic groups, having an epoxide equivalent weight below 750,(B) 10% to 60% by weight, prerferably 20% to 40% by weight, based on the total binder, of a prepolymer having a molecular weight (mass average) of 500 to 5000 and an average content per molecule of 0.1 to 1.9 hydroxyl groups and 0.1 to 1.0 carboxyl groups, the total of the hydroxyl and carboxyl groups being between 1 and 2, with an aromatic groups content of 10% to 45% by weight, calculated as phenylene groups contained in the resin solids in % by weight.

Abstract: The present invention is directed to an aqueous coating composition, comprising:a) an aqueous nonionic dispersion of a polymer selected from the group consisting of a acrylic resin, polyurethane resin and mixtures thereof;b) a nonionic water soluble polymer having a molecular weight of from about 3,000 to about 200,000 daltons;c) pigments; andd) optionally additives selected from the group consisting of crosslinkers, organic solvents, surfactants, rust inhibitors, catalysts, and mixtures thereof.The new aqueous coating composition is stable in the presence of acids and bases especially with the cure of crosslinkers.