Abstract: The invention relates to the use of water-soluble polymers, consisting of a) monoethylenically unsaturated monomers consisting of acidic groups in an acidic, partially or fully neutralized form and b) other monomers which can be copolymerized with monomers a) as a drying agent for the production of redispersion power and/or powdery polymer dispersing agents. The water-soluble polymers contain at least 20 wt. % monomers (a) and a maximum of 8O wt. % monomers (b) and are supplied to the production process in the form of aqueous solutions in amounts of up to 50 wt. % maximum, enabling powder, polymer products with a residual moisture of <2 wt. % to be obtained, particularly in spray drying processes, and which are added to mineral systems as dispersing agents in amounts of 0.05-5 wt. % or are used as building materials for the mineral binding of redispersion powder in adhesives or as a binders in their own right.

Abstract: A method is proposed for leakage monitoring in a tube bundle reactor (2) having a bundle of contact tubes (2) vertically arranged parallel to one another, through which a fluid reaction mixture is delivered, and through whose space (3) surrounding the contact tubes a liquid heat exchanger is delivered, and having one or more vent holes (4) for the liquid heat exchanger in the upper region of the tube bundle reactor (1), which connect the tube bundle reactor (1) to one or more equilibrating vessels (5, 6, 7) for the liquid heat exchanger, wherein at least one of the equilibrating vessels (5, 6, 7) for the liquid heat exchanger has a connecting line (8) for supplying the gas phase above the liquid level therein to an analysis device (9), which determines the composition of the supplied gas phase.

Abstract: A fluidized-bed reactor for carrying out a gas-phase reaction, in which a gaseous reaction mixture flows from the bottom upward through a heterogeneous particulate catalyst forming a fluidized bed and internals are arranged in the fluidized bed, wherein the internals divide the fluidized bed into a plurality of cells arranged horizontally in the fluidized-bed reactor and a plurality of cells arranged vertically in the fluidized-bed reactor, with the cells having cell walls which are permeable to gas and have openings which ensure an exchange number of the heterogeneous particulate catalyst in the vertical direction in the range from 1 to 100 liters/hour per liter of reactor volume, is proposed.

Abstract: Finely divided, cationic polymer dispersions which are obtainable by emulsion polymerization of ethylenically unsaturated monomers in an aqueous solution of a cationic prepolymer as a dispersant, wherein a cationic prepolymer is first prepared by polymerization of (a) from 10 to 45% by weight of at least one (meth)acrylate which has an amino group and/or a quaternary ammonium group, and/or one (meth)acrylamide which carries an amino group and/or a quaternary ammonium group, (b) from 40 to 85% by weight of at least one optionally substituted styrene, (c) from 0 to 20% by weight of acrylonitrile or methacrylonitrile, (d) from 1 to 15% by weight of at least one ethylenically unsaturated carboxylic acid or one ethylenically unsaturated carboxylic anhydride and (e) from 0 to 20% by weight of at least one nonionic, ethylenically unsaturated monomer differing from the monomers (b) and (c), the sum of (a)+(b)+(c)+(d)+(e) being 100% by weight, in a solution polymerization in a water-miscible organic solvent, and the

Abstract: Process for preparing hydrocyanic acid, which comprises catalytic dehydration of gaseous formamide to give a product mixture comprising hydrocyanic acid, water, formamide, ammonia, CO and high boilers, separation of the product mixture by condensation of a condensate comprising water, formamide, high boilers and possibly ammonia and hydrocyanic acid from the product mixture obtained and partial or total recirculation of the condensate into a heat exchanger located downstream of the reactor.

Abstract: Provided herein are isolated laccase enzymes and nucleic acids encoding them. Also provided are mediators for laccase reactions. Also provided herein are methods for using laccases to oxidize lignins and other phenolic and aromatic compounds, such as for bio-bleaching and decolorization of wood pulp under high temperature and pH conditions to facilitate a substantial reduction in use of bleaching chemicals, as well as for treatment of fibers.

Abstract: A process for preparing 1,2-ethylene glycol and 1,2-propylene glycol by heterogeneously catalyzed hydrogenolysis of a polyol, which comprises using, as a heterogeneous catalyst, a catalyst comprising palladium (Pd) and a support material selected from the group of carbon, zirconium dioxide, titanium dioxide and calcium carbonate, the catalyst not comprising any ruthenium (Ru), and performing the hydrogenolysis in the presence of water.

Abstract: Aqueous polymer dispersion obtainable by emulsion polymerization of monomers in the presence of inorganic polymer particles (inorganic particles for short) which are dispersible in the aqueous phase without surface-active assistants.

Abstract: The use of polymer particles for producing photonic crystals, wherein the polymer particles have a weight-average particle size of greater than 600 nm and a content of ionic groups of less than 0.001 mol, preferably less than 0.0001 mol/1 g of polymer particles and the polymer particles form the lattice structure of the photonic crystal without being embedded into a liquid or solid matrix.

Abstract: The use of an addition polymer A composed in copolymerized form of 0.1% to 40% by weight of at least one C3 to C30 alkene, 40% to 99.9% by weight of at least one ethylenically unsaturated C3 to C6 monocarboxylic acid, 0% to 50% by weight of at least one ethylenically unsaturated C4 to C12 dicarboxylic acid and/or of the ethylenically unsaturated dicarboxylic monoalkyl esters or dicarboxylic anhydrides obtainable from said acid, and 0% to 30% by weight of at least one other ethylenically unsaturated compound which is copolymerizable with the aforementioned monomers, as a dispersing assistant in free-radically initiated aqueous emulsion or suspension polymerization.

Abstract: A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets and postcrosslinking the polymer particles, wherein the postcrosslinked polymer particles are at least partly coated.

Abstract: The present invention relates to a novel process for preparing colorless, isocyanurate group-comprising polyisocyanates of (cyclo)aliphatic diisocyanates.

Abstract: Novel mono-azide substituted rylene-imide derivatives, their use in methods for the detection of analytes and reagents kits for the detection of analytes comprising said novel mono-azide substituted rylene-imide derivatives.

Abstract: A compound, oligomer, or polymer having a functional group of formula (I) wherein R is a group having 1 to 12 carbons and optionally including one or more heteroatoms selected from oxygen, nitrogen, and sulfur is useful in curable compositions having active hydrogen functional groups reactive with group (I). The functional groups of formula (I) and active hydrogen functional groups may be part of the same material or different materials. In some embodiments a filler is surface modified to have a functional group of formula (I). Also disclosed is a method of making a material having a functional group of formula (I).

Abstract: The invention relates to a method for producing electrically conductive surfaces on a nonconductive substrate, comprising the following steps: a) transferring a dispersion containing electrolessly and/or electrolytically coatable particles from a support onto the substrate by irradiating the support with a laser, b) at least partially drying and/or curing the dispersion transferred onto the substrate, so as to form a base layer, c) electrolessly and/or electrolytically coating the base layer.

Abstract: Processes comprising: (a) providing a reactant comprising a component selected from the group consisting of o-xylene, naphthalene and mixtures thereof, and a gas comprising oxygen; (b) reacting the reactant and the gas in a reaction system, in the presence of a catalyst, to form phthalic anhydride; wherein the reaction system comprises: (i) at least two reaction zones, each reaction zone cooled with a coolant; and (ii) an intermediate cooling zone disposed between a first of the at least two reaction zones and a second of the at least two reaction zones; and wherein the coolant entering the first of the at least two reaction zones has a temperature which is more than 20° C. higher than a temperature of the coolant entering the second of the at leas two reaction zones.

Abstract: The present invention relates to a simplified method of film-coating articles by means of radiation curing.

Abstract: The present invention relates to a process for purifying a gas mixture G-0 comprising dinitrogen monoxide, at least comprising the contacting of the gas mixture G-0 with a solvent mixture (I) at least comprising 50% by weight of water based on the overall solvent mixture (1), the pH of the solvent mixture (I) being in the range from 3.5 to 8.0, the desorption of a gas mixture G-1 from a composition (A), the contacting of the gas mixture G-1 with a solvent mixture (11) at least comprising 50% by weight of water based on the overall solvent mixture (11), the pH of the solvent mixture (11) being in the range from 2.0 to 8.0, and the desorption of a gas mixture G-2 from a composition (B), the pH being based in each case on a measurement with a glass electrode, and to the use of gas mixtures obtainable by a process according to the invention as oxidizing agents for olefins.

Abstract: Method for reducing the formamide content of preparations (P) prepared from N-vinylformamide monomers by polymerization.

Abstract: Use of a plastid-lipid associated protein promoter (PAP promoter) for heterologous expression of genes in plants of the genus Tagetes.