Abstract: Inorganic oxide pigments (ceramics) are prepared by mixing the starting materials in the presence of water and in the presence or absence of assistants, drying and subsequent calcining in a rotary furnace by processing the starting materials in the presence of water into a pumpable suspension having particle sizes of 50%<10 .mu.m and 100%<50 .mu.m, dewatering the suspension by spray drying it to leave porous granules, and calcining those granules>97% from 20 to 800 .mu.m in size.

Abstract: The invention relates to a curable composition containing as component A) compounds with at least two activated double bonds (I), these being .alpha.,.beta.-unsaturated carbonyl compounds, .alpha.,.beta.-unsaturated carboxylic acid esters or .alpha.,.beta.-unsaturated nitriles, and compounds B) which contain at least two active hydrogen atoms or at least two groups with active hydrogen atoms or at least one active hydrogen atom and at least one group with an active hydrogen atom, and customary additives, catalysts, if appropriate pigments and an organic solvent. Either component A) or B) or components A) and B) are based on a branched soluble acrylate copolymer (P) which is obtainable by copolymerization ofa) 3 to 30% by weight of monomers with at least two ethylenically unsaturated polymerizable double bonds,b) 5 to 60% by weight of monomers with a functional group andc) 5 to 92% by weight of other ethylenically unsaturated monomers,the sum of a), b) and c) being 100% by weight.

Abstract: Solutions of polyimide-forming substances containA) polyamines andB) amides and/or esters of tetracarboxylic acids, the amido or ester groups carrying substituents selected from the group consisting of carboxyl, sulfo and silicon-containing groups,and are used as polyimide coatings.

Abstract: Solutions of polyimide-forming substances containA) aromatic or partly aromatic diamines andB) tetraesters of imide-forming aromatic or partly aromatic tetracarboxylic acids or mixtures of these tetraesters with the corresponding tri-, di- and/or monoesters.These solutions are suitable for the production of coatings.

Abstract: Flexible printing plates are produced from printing plates consisting essentially of a dimensionally stable substrate (1) and a recording layer (2) by a process in which the printing plate is produced alternatively either by photochemical or by mechanical structuring, and in the case of photochemical structuring the photosensitive recording layer (2) is exposed imagewise and the unexposed parts of the recording layer (2) are washed out with a developer and in the case of mechanical structuring the originally photosensitive, uniformly exposed recording layer (2) is cut imagewise and the nonprinting parts of the recording layer (2) are peeled off from the substrate (1).The printing plates produced by this process are suitable for the production of products printed by the flexographic method and for lacquering products printed by the offset method.

Abstract: The present invention relates to an acrylate copolymer containing amino groups, carboxyl groups and, if appropriate, hydroxyl groups which is characterized in that it has been produced by preparing an acrylate copolymer containing amino groups and, if appropriate, carboxyl groups, by means ofA) free-radical solution polymerization, using azo initiators at temperatures from 80.degree. to 150.degree. C., ofa.sub.1) 1 to 20% by weight of vinylimidazole and/or dimethylaminopropylmethacrylamide,a.sub.2) 0 to 50% by weight of one or more monomers containing hydroxyl groups,a.sub.3) 0 to 50% by weight of one or more monomers containing carboxyl groups, anda.sub.4) 30 to 85% by weight of at least one further ethylenically unsaturated copolymerizable monomer,the total of the proportions by weight of the components a.sub.1 to a.sub.4 always being 100% by weight, and the proportions by weight of the components a.sub.2 and a.sub.

Abstract: Solutions of polyimide-forming substances containA) aromatic or partly aromatic polyamines andB) amides or a mixture of esters and amides of tetracarboxylic acids.Solutions are useful as coating compositions.

Abstract: A photosensitive mixture useful for producing relief and printing plates consists essentially of(a) at least one block copolymer of styrene, butadiene and/or isoprene,(b) at least one photopolymerizable olefinically at least monounsaturated organic compound,(c) at least one photoinitiator, and(d) at least one azo dye.

Abstract: A radiation-crosslinkable mixture which contains a carboxyl-containing precursor of a heterocyclic polymer, a copolymerizable ethylenically unsaturated ternary sulfonium salt, a photoinitiator and a polar aprotic organic solvent.

Abstract: A photosensitive recording element comprises(A) a dimensionally stable substrate,(B) a photopolymerizable relief-forming recording layer and, if required, an adhesion-promoting layer arranged between (A) and (B), a release layer (C) applied to that side of the recording layer (B) which faces away from the substrate (A), and, if required, a cover sheet (D) applied thereon, the photopolymerizable relief-forming recording layer (B) containingb.sub.1) at least one polymeric binder,b.sub.2) at least one photopolymerizable olefinically unsaturated monomer which is compatible with b.sub.1),b.sub.3) at least one photopolymerization initiator andb.sub.4) at least one aryl alkyl ketone,and is suitable for the production of relief printing plates.

Abstract: The present invention relates to a method of producing dull surfaces, in which initially a first paint layer is applied in a first layer thickness and at least one second paint layer is then applied on top of the first paint layer, at least the paint layer applied last being provided with dulling agents and having a dry film layer thickness which is less than the average particle size of the dulling agent. The method is characterized in that the paint layers applied are cured by ionizing radiation.

Abstract: Flexible printing plates are produced from printing plates consisting essentially of a dimensionally stable substrate (1) and a recording layer (2) by a process in which the printing plate is produced alternatively either by photochemical or by mechanical structuring, and in the case of photochemical structuring the photosensitive recording layer (2) is exposed imagewise and the unexposed parts of the recording layer (2) are washed out with a developer and in the case of mechanical structuring the originally photosensitive, uniformly exposed recording layer (2) is cut imagewise and the nonprinting parts of the recording layer (2) are peeled off from the substrate (1).The printing plates produced by this process are suitable for the production of products printed by the flexographic method and for lacquering products printed by the offset method.

Abstract: The present invention is directed to a beam-curable coating composition for coating glass surfaces, particularly, optical glass fibers. The resultant coatings show slight or no loss of adhesion after exposure to moisture. The coating composition includes ethylenically unsaturated polyurethane, ethylenically unsaturated monomer, photoinitiator and a silane compound. The silane compound is an azidosilane and is added to improve adhesion of the coating agents exposed to moisture. Optionally, aminoalkoxysilanes may also be included.

Abstract: The present invention relates to a process for the electrophoretic internal coating of metal containers for the storage of foodstuffs and beverages, the aqueous coating composition used containing 0.01 to 10% by weight, preferably 0.5 to 3% by weight, relative to the solids content of the coating composition, of wax changing into the molten state in the range from 60.degree. C. to 100.degree. C. The process is used in particular for the internal coating of 3-part and 2-part cans and drawn-and-ironed or otherwise deep-drawn cans.

Abstract: The invention relates to a cathodic electro-dipping process wherein the electro-dipping primer employed contains a crosslinking agent which can be obtained by reactinga) a diol and/or a triol or a mixture of diols and/or a mixture of triols,b) diphenylmethane 4,4'-diisocyanate the melting point of which has been depressed, by partial reaction with a monool and/or polyol or a mixture of monools and/or a mixture of polyols, so far that it is liquid at room temperature andc) a masking agent or a mixture of masking agentsto give a crosslinking agent which is free from isocyanate groups.

Abstract: Synthetic resins contain, as essential components,A) from 20 to 95% by weight of a crosslinkable binder selected from the group consisting of the polymers, polyadducts or polycondensates having reactive centers in the form of hydroxyl, thio, primary and/or secondary amino groups and/or hydrophilic centers in the form of ammonium, sulfonium and/or phosphonium groups andB) from 5 to 80% by weight of polymers consisting of a core and one or more shells and furthermoreC) from 0 to 10% by weight of one or more crosslinking agents andD) from 0 to 10% by weight of a pigment formulation consisting of one or more pigments and a resin having surfactant properties andE) from 0 to 10% by weight of additives and/or assistants.

Abstract: The invention relates to paints which contain a compound of the general formula (I) or a mixture of compounds of the general formula (I), the general formula (I) being ##STR1## and n, m, X, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and Y having the following meaning:- n stands for a number between 2 and 25, preferably for a number between 5 and 15- m stands for a number from 0 to 5- X and Y can be identical or different and stand for a functional group, for example a hydroxyl, amino, carboxyl or NCO group- R.sup.1 and R.sup.4 can be identical or different and stand for an alkylene radical, preferably for an alkylene radical having 1 to 6 carbon atoms, or for an arylene radical, preferably a phenylene radical- R.sup.2 and R.sup.3 can be identical or different and stand for an alkyl radical, preferably for an alkyl radical having 1 to 3 carbon atoms, or for an aryl radical, preferably for a phenyl radical- R.sup.5 stands for ##STR2## Z standing for X, Y or R.sup.2.

Abstract: Aqueous electrocoating baths containing synthetic resins capable of deposition on the cathode, and a process for coating electrically conducting substratesThe invention relates to aqueous electrocoating baths containing synthetic resins capable of deposition on the cathode. The electrocoating baths according to the invention are characterized in that they contain a homopolymer or copolymer of an alkyl vinyl ether of the general formula CH.sub.2 =CH--O--R wherein R represents an alkyl radical having 2 to 4 C atoms.

Abstract: The invention relates to a cathodic electro-dipping process wherein the electro-dipping primer employed contains a crosslinking agent which can be obtained by(I) reacting, in a first stage,(a) diphenylmethane diisocyanate and(b) a monoalcohol or a mixture of monoalcohols to give an intermediate product (A) containing isocyanate groups, and(II) reacting this intermediate product (A) in a second stage with(c) a polyol or a mixture of polyols to give an intermediate product (B) containing hydroxyl groups which(III) is reacted in a third stage either with(d) a cycloaliphatic, aliphatic or araliphatic polyisocyanate or a mixture of such polyisocyanates and(e) a monofunctional masking agent or a mixture of such masking agents or with(f) a partially-masked polyisocyanate prepared from (d) and (e)to give a crosslinking agent which is free from isocyanate groups.

Abstract: The present invention relates to acid-curing aqueous coating compositions, in particular for the coating of veneer films and continuous edges, containing an amino resin and a hydroxyl-containing polyester.