Abstract: The invention relates to a process for preparing primary amines by hydrogenating nitrites in the presence of a catalyst comprising cobalt and optionally, in addition, nickel and also at least one further doping metal on a particulate support material, the cobalt and, if present, the nickel having an average particle size of from 3 to 30 nm in the active catalyst. The invention further relates to the use of the catalyst in a process for preparing primary amines by hydrogenating nitrites.

Abstract: The invention relates to aqueous pigment preparations containing i) at least one copolymer P of ethylenically unsaturated monomers M in the form of an aqueous polymer dispersion which contains between 0.1 and 1.5 weight %, in relation to the total weight of the copolymer P, of polymerized itaconic acid as acid monomer M1, its salts and/or anhydride, where up to 50 weight % of the itaconic acid can be substituted by another monomer having at least one acid group or a neutralized acid group, and whose glass transition temperature TG lies between −10 and +50° C.; ii) at least one inorganic pigment; iii) possibly inorganic fillers; and iv) standard additives. The invention also relates to the use of the copolymers P containing itaconic acid for improving the wet-abrasion resistance of polymer-bound coatings containing pigments.

Abstract: The core/jacket catalyst molding with a core made from an inorganic support material and with a jacket made from a catalytically active material can be prepared by coextruding an aqueous molding composition which comprises the support material or a precursor thereof, with an aqueous molding composition which comprises the catalytically active material or a precursor thereof, then drying the coextrudate, and then calcining the dried coextrudate.

Abstract: In a process for the catalytic hydrogenation of a carbonyl compound or a mixture of two or more carbonyl compounds in the presence of catalyst tablets which comprise an inorganic, TiO2-containing support and, as active component, copper or a mixture of copper with at least one metal selected from the group consisting of zinc, aluminum, cerium, nobel metals and metals of transition group VIII and whose copper surface area is not more than 10 m2/g, the diameter d and/or the height h of the tablets is less than 3 mm.

Abstract: The mixture contains (a) from 5 to 95% by weight of at least one reaction product of a poly(C2-20-carboxylic acid) having at least one tertiary amino group with secondary amines and (b) from 5 to 95% by weight of at least one reaction product of maleic anhydride and a primary alkylamine.

Abstract: A process for producing scratch-resistant coatings comprises applying at least one UV-curable coating composition comprising as its photochemically crosslinkable constituent at least one aliphatic urethane (meth)acrylate prepolymer PU having at least two double bonds per molecule, or a mixture of at least one urethane (meth)acrylate prepolymer PU and at least one reactive diluent, to the target substrate and curing the resulting wet coating by exposure to ultraviolet radiation under an inert gas atmosphere.

Abstract: Electrolysis cell consisting of 2 monopolar electrodes and one or more intermediate bipolar electrodes, where the one monopolar electrode and the parts of the bipolar electrodes charged in the same sense thereto together form the working electrode and the other monopolar electrode and the parts of the bipolar electrodes charged in the same sense thereto together form the counter electrode the space between counter and working electrode is undivided the surface of the counter electrode consists of electrochemically active and inactive parts the sum of the electrochemically active parts of the surface of the counter electrode is smaller by a large amount than that of the electrochemically active parts of the surface of the working electrode.

Abstract: A process is described for continuously preparing chromanol ester derivatives, in particular for continuously preparing carboxylic esters of tocopherols and tocotrienols by continuous acylation with carboxylic acids or carboxylic anhydrides.

Abstract: The present invention provides a process for preparing a terpyridine compound of the formula I by obtaining a C1-C4-alkyl pyridine-2-carboxylate derivative by acid hydrolysis of a 2-cyanopyridine derivative by means of an anhydrous inorganic acid or its anhydride in the presence of water and a C1-C4-alkanol, with an equimolar amount of water being added to the 2-cyanopyridine derivative prior to addition of the anhydrous inorganic acid or its anhydride, subsequently condensing the resultant C1-C4-alkyl pyridine-2-carboxylate derivative with acetone in an aprotic solvent in the presence of a base, then reacting the obtained 1,5-bis(2-pyridyl)pentane-1,3,5-trione derivative with ammonia or ammonium salts (NH4)qY with removal of the water of reaction formed by employing a C1-C4-alkanol as an entrainer, and finally chlorinating the resultant 2,6-bis(2-pyridyl)-4(1H)pyridinone derivative in the presence of phosphorus oxide chloride.

Abstract: The invention relates to thermoplastic molding compound that contain A) 1 to 97.85% by weight of at least one thermoplastic polyester, B) 1 to 97.85% by weight of at least one polycarbonate, C) 1 to 50% by weight of a rubber-elastic polymer, D) 0.1 to 5% by weight of a phosphorous stabilizer, E) 0.05 to 2% by weight of an organic acid, F) 0 to 60% by weight of further additives. The weight percentages of the components A) to F) add up to 100%.

Abstract: Perylene derivatives of the general formula I where X and Y are independently oxygen, —NR1 or —NR2; R1 and R2 are independently hydrogen, C1-C18-alkyl, C5-C7-cycloalkyl, aryl or C1-C6-alkoxy; R3 to R10 are independently hydrogen, hydroxyl or aryl, although radicals conjointly attached to one carbon atom may also be ═O or ═CHR11, R11 is hydrogen or C1-C3-alkyl, with the proviso that said perylene derivative I contains from at least one to not more than three carbonyl groups per molecule.

Abstract: The present invention relates to hard capsules comprising (A) polymers obtainable by free-radical polymerization of a) at least one vinyl ester in the presence of b) polyether-containing compounds and c) where appropriate one or more other copolymerizable monomers c) and subsequent at least partial hydrolysis of the ester functions in the original monomers a), with the proviso that in the absence of another copolymerizable monomer c) the polyether-containing compound b) must have a number average molecular weight ≦10,000, (B) where appropriate structure-improving auxiliaries and (C) other conventional shell constituents, the production and use thereof.

Abstract: Hydraulic fluids, in particular brake fluids for motor vehicles, comprising from 0.01 to 50 wt % of one or more cyclic carboxylates, or cyclic carboxamides, which can carry a linear or branched C1-bis C20 alkyl group on the nitrogen atom.

Abstract: The invention relates to pyrazolone pigments of general formula (I), wherein the radicals R1, R2, R3 and R4 independently represent hydrogen, chlorine, methyl or ethyl, whereby at least one of the radicals R1-R4 is different from hydrogen. The inventive pigments are characterised by a CIELAB colour angle of 80-85°, a chroma of 58-62 and a luminosity ≧87 (measuring angle 45°, standard illuminant D65).

Abstract: The surfaces of apparatuses and apparatus parts for chemical plant construction, including, for example, apparatus, container and reactor walls, discharge apparatuses, fittings, pumps, filters, compressors, centrifuges, columns, heat exchangers, dryers, comminuting machines, internals, packings and mixing elements, are coated by a process wherein protuberances having a mean height of from 100 nm to 50 &mgr;m with a mean spacing of from 100 nm to 100 &mgr;m are produced on the surface to be coated and the coating is applied thereon by currentless deposition of a metal layer or of a metal-polymer dispersion layer with the aid of a plating bath which contains a metal electrolyte, a reducing agent and optionally a polymer or polymer blend to be deposited, in dispersed form.

Abstract: In a process for the preparation of acrolein or acrylic acid or a mixture thereof from propane, the propane is subjected, in a first reaction stage, to a partial dehydrogenation under heterogeneous catalysis to give propene, of the components contained in the product gas mixture formed in the first reaction stage other than propene and propane at least a portion of the molecular hydrogen present is then separated off from said mixture and the product gas mixture is then used for the preparation of acrolein and/or acrylic acid by gas-phase catalytic propylene oxidation, molecular nitrogen being present for diluting the reaction gas mixture during the propylene oxidation.

Abstract: The invention relates to a process for the preparation of cis-6-hexadecenoic acid of the formula I, which comprises reacting a1) a triphenylphosphonium salt of the formula II, R1OOC—(CH2)5—P(R2)3+X−  II  with decanal of the formula III H3C—(CH2)8—CH═O  III  or a2) a triphenylphosphonium salt of the formula IV, H3C—(CH2)9—P(R2)3+X−  IV  with an aldehyde of the formula V, R1OOC—(CH2)4—CH═O  V  in a Wittig reaction, and b) saponifying the ester, formed by process step a1) or a2), of the formula VI,  where the substituents R1, R2 and X− have the meanings given in the description.

Abstract: A method for producing compounds which are oxidized in an alpha position by electrochemical reaction with alcohol in the presence of an auxiliary electrolyte and catalytic amounts of a metal salt.

Abstract: Fungicidal mixtures comprising as active components a) an amide compound of the formula I A—CO—NR1R2  I  in which A is an aryl group or an aromatic or non-aromatic, 5- or 6-membered heterocycle which has from 1 to 3 hetero atoms selected from O, N and S; where the aryl group or the heterocycle may or may not have 1, 2 or 3 substituents which are selected, independently of one another, from alkyl, halogen, CHF2, CF3, alkoxy, haloalkoxy, alkylthio, alkylsulfynyl and alkylsulfonyl; R1 is a hydrogen atom; R2 is a phenyl or cycloalkyl group which may or may not have 1, 2 or 3 substituents which are selected, independently of one another, from alkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkynyloxy, cycloalkyl, cycloalkenyl, cycloalkyloxy, cyclo-alkenyloxy, phenyl and halogen, where the aliphatic and cycloaliphatic radicals may be partially or fully halogenated and/or the cycloaliphatic radicals may be substituted by from 1 to 3 alkyl groups and where the phenyl group may have from

Abstract: A process for the hydroformylation of olefins having from 20 to 400 carbon atoms by reaction of the olefins with synthesis gas in the presence of a cobalt carbonyl catalyst and recovery of the cobalt catalyst by extraction of the reaction product with an aqueous acidic solution in the presence of oxygen and separation of the organic and aqueous phases, wherein (a) the aqueous phase is separated from the organic phase by means of gravitational forces to the extent that the proportion of aqueous phase dispersed in the organic phase is 2% by weight or less, based on the organic phase, and (b) the organic phase obtained in step (a) is exposed to an electric field to coalesce the remaining dispersed aqueous phase, is described. In this way, the residual cobalt content of the hydroformylation product can be reduced to less than 1 ppm.