Abstract: There is disclosed a multivalent cation containing copolymer derived from one or more ethylenically unsaturated acids. The copolymer has the following characteristics: (a) an intrinsic viscosity of at least about 3 dl/g when measured in 1 M Na Cl solution at 25° C.; (b) the copolymer is derived from a monomer mixture comprising an ethylenically unsaturated acid and at least one comonomer, the ethylenically unsaturated acid present in an amount in the range of from about % to about 65% by weight; and (c) a residual comonomer content is less than 1000 ppm when the comonomer is an acrylamide. The copolymer, inter alia, is useful as a flocculant for treating an aqueous slurry comprising particulate material, preferably tailings from a mining operation.

Abstract: Disclosed herein are cyanated compounds of the formula (I) wherein at least one of the radicals R2, R3, R4 and R5 is CN, and the remaining radicals are selected from hydrogen, chlorine and bromine; X is O, S, SO or SO2; m is 0, 1, 2, 3 or 4; R1 is selected from bromine, chlorine, cyano, —NRaRb, C1-C24-alkyl, C1-C24-haloalkyl, C1-C24-alkoxy, C1-C24-haloalkoxy, C3-C24-cycloalkyl, heterocycloalkyl, heteroaryl, C6-C24-aryl, C6-C24-aryloxy, C6-C24-aryl-C1-C10-alkylene, etc.; A is a diradical selected from diradicals of the general formulae (A.1), (A.2), (A.3), and (A.4) wherein R6, (R7)n, (R8)o and (R9)p are as defined in the claims and in the description. Also disclosed are color converters containing at least one polymer as a matrix material and at least one cyanated compound of formula (I) or mixtures thereof as a fluorescent dye, the use of the color converters, and lighting devices containing an LED and at least one color converter.

Abstract: The present invention relates to a composition comprising (A) at least one carboxy-functional polyester having an acid number in the range from 20 to 250 mg KOH/g, prepared using at least one difunctional monomer (a1) with aliphatic groups having 12 to 70 carbon atoms between the functional groups, and also (B) at least one synthetic layered hydroxide, where the at least one layered hydroxide (B) is prepared in the presence of the polyester (A). The present invention further relates to the preparation of the composition and also to the use of the composition as coating material.

Abstract: Thermoplastic molding compositions containing A) from 29 to 99.99% by weight of a polyester, B) from 0.01 to 3.0% by weight of an alkali metal salt of nitrous acid or of phosphoric acid or of carbonic acid, or a mixture of these, based on 100% by weight of A) and B), and C) from 0 to 70% by weight of further additives, where the sum of the % by weight values for A) to C) is 100%. The compositions are used in the production of cable sheathing or optical waveguide sheathing via blowmolding, profile extrusion, and/or tube extrusion.

Abstract: A slurry for manufacturing gypsum board comprises calcined gypsum, water, a foaming agent, and a coalescing agent. The foaming agent imparts a plurality of bubbles in the slurry. Typically, a foam is pre-generated with the foaming agent and the foam is used to form the slurry such that the foam imparts the plurality of bubbles in the slurry. The coalescing agent coalesces the plurality of bubbles imparted by the foam. Typically, the coalescing agent coalesces a plurality of small and partially joined bubbles imparted by the foam to create larger and more discrete bubbles. A gypsum board and method of forming the slurry and the gypsum board are also disclosed. The gypsum board comprises a gypsum layer formed from the slurry. The gypsum layer defines a plurality of bubbles dispersed therein, which are imparted by the foam and coalescing agent of the slurry.

Abstract: The present invention relates to the use of coating compositions, comprising shaped transition metal, especially silver, particles and a binder, wherein the ratio of pigment to binder is preferably such that the resulting coating shows an angle dependent color change, for the production of security elements and holograms. When the coating compositions of the present invention are used in coating a hologram the obtained products show a an angle dependent color change (flip/flop effect), different colors in reflection and transmission, an extremely bright OVD image and extremely strong rainbow effect, high purity and contrast.

Abstract: Esters of oligo-hydroxycarboxylic acids have the general formula ( ): wherein at least one of the radicals R1, R4 or R5 is a linear or branched aliphatic hydrocarbon radical having 6 to 30 carbon atoms and 0, 1, 2 or 3 double bonds. Cosmetic and pharmaceutical agents contain said esters. These esters are effective as thickeners, in particular for compositions containing surfactants.

Abstract: Provided are emissions treatment systems for an exhaust stream having an ammonia-generating component, such as a NOx storage reduction (NSR) catalyst or a lean NOx trap (LNT) catalyst, and an SCR catalyst disposed downstream of the ammonia-generating catalyst. The SCR catalyst can be a molecular sieve having the CHA crystal structure, for example SSZ-13 or SAPO-34, which can be ion-exchanged with copper. The LNT can be layered, having an undercoat washcoat layer comprising a support material, at least one precious metal, and at least one NOx sorbent selected from the group consisting of alkaline earth elements, rare earth elements, and combinations thereof and a top washcoat layer comprising a support material, at least one precious metal, and ceria in particulate form, the top washcoat layer being substantially free of alkaline earth components. The emissions treatment system is advantageously used for the treatment of exhaust streams from diesel engines and lean burn gasoline engines.

Abstract: What is proposed is a column (K) comprising separatory internals (E) for separating a mixture of hydrocarbons and/or hydrocarbon derivatives (1) by extractive distillation with a selective solvent (2), with supply of the selective solvent (2) in the upper region of the column and supply of the mixture of hydrocarbons and/or hydrocarbon derivatives to be separated (1) below the supply of the selective solvent (2), the selective solvent (2) becoming laden in the column (K) with the components from the mixture to be separated (1) for which it has greater affinity and being withdrawn from the lower region of the column as laden selective solvent (3), while, by contrast, the components from the mixture to be separated for which the selective solvent (2) has a lower affinity remain in the vapor phase and are withdrawn as top stream (4), which is completely or partially condensed to obtain a condensate (5), some of which is withdrawn as product stream (6), the remainder being reintroduced to the column (K) as ref

Abstract: The invention relates to a device for heat transfer, comprising a low temperature heat exchanger (3) and a high temperature heat exchanger (5), the heat exchangers (3, 5) being connected to one another by means of a connecting line such that a heat transfer medium flows through the high temperature heat exchanger (5) and through the low temperature heat exchanger (3) in succession, at least one dwell time tank (19) being arranged in the connecting line.

Abstract: The present invention relates to a polyurethane composite system comprising a rigid polyurethane foam and a coating material composed of a compact polyurethane or a compact polyurea, wherein the rigid polyurethane foam comprises a porous three-dimensional reinforcing material which forms a network, where the network encloses at least 50% of the volume of the rigid polyurethane foam, or at least two layers of a porous, at least two-dimensional reinforcing material. The present invention further relates to a process for producing the polyurethane composite system and also a sports article, cladding part or furniture item comprising such a polyurethane composite system.

Abstract: The present invention relates to a process for producing flame-retardant porous materials comprising the following steps: (a) reacting at least one polyfunctional isocyanate (a1) and at least one polyfunctional aromatic amine (a2) in an organic solvent optionally in the presence of water as component (a3) and optionally in the presence of at least one catalyst (a5); and then (b) removing the organic solvent to obtain the organic porous material, where step (a) is carried out in the presence of at least one organic flame retardant as component (a4), where this flame retardant is soluble in the solvent. The invention further relates to the porous materials thus obtainable, and also to the use of the porous materials for thermal insulation.

Abstract: The present invention relates to a method for producing a thermoplastic polyurethane that comprises reacting an isocyanate composition at least comprising 4,4?-diisocyanatodicyclohexylmethane (H12MDI) with a polyol composition (PZ) in the presence of a catalyst composition at least comprising a bismuth-containing compound selected from bismuth (tricarboxylate) catalysts, where the carboxyl radicals independently of one another have 6 to 12 carbon atoms, to give a melt and producing pellets from the resulting melt. The present invention further relates to a thermoplastic polyurethane obtained or obtainable by the method of the invention, and also to the use for producing films, profiles, cable sheathing, and sheathing of LED strips.

Abstract: The present invention relates to a process for producing an aqueous coating composition on the basis of a fast-curing hydraulic binder, the coating composition being applied in liquid form to a substrate, and also to the corresponding coating composition. The coating composition additionally comprises an organic polymeric binder, a retardant, and a curing accelerator. Following prior activation, the coating compositions produce coatings having improved through-drying properties.

Abstract: An intermediate of the formula (I) wherein the radicals R1 are independently of one another methyl, ethyl or n-propyl, is suitable for preparing a compound of the formula (A) wherein X is a group of the formula (A-I) or (A-II), Y is C11-C17alkyl, and Z is a direct bond, —(CH2)8— or —CH2—S—CH2—. The compounds of the formula (A) are useful for stabilizing an organic material against thermal, oxidative or light induced degradation.

Abstract: The invention relates to aqueous compositions comprising a) at least one polymer PALK in the form of dispersed polymer particles, wherein the polymer PALK is obtainable by ring-opening metathesis polymerization of at least one cyclic olefin monomer, and b) at least one polymer P2 in the form of dispersed polymer particles, wherein the polymer P2 comprises no olefinically unsaturated C—C-bond and has repeating units bearing at least one polar group. The aqueous compositions are suitable in particular for producing sheetings and barrier coatings having a very good barrier action toward gases, such as air, oxygen, nitrogen, argon, carbon dioxide, and in particular toward oxygen and oxygenous gases, such as air. The sheetings and coatings also have very good mechanical properties, in particular a high elongation at break coupled with good tear strength.

Abstract: Membrane comprising a block copolymer comprising polyarylene ether blocks and polyalkylene oxide blocks, wherein said polyalkylene oxide blocks comprise at least one polyethylene oxide segment and at least one segment of at least one polyalkylene oxide that is different from polyethylene oxide

Abstract: The invention relates to a process for purifying alkanesulfonic acids which comprises the steps of: (a) distilling a melt comprising crude alkanesulfonic acid (1) to completely or partly remove low boilers, wherein the low boilers are drawn off at the top of a distillation column (3) or of a one-stage evaporation apparatus and a material stream (7) comprising alkanesulfonic acid, high boilers and residual low boilers is withdrawn at the bottom of the distillation column (3) or of the one-stage evaporation apparatus, (b) sending the stream (7) comprising alkanesulfonic acid, high boilers and residual low boilers into a melt crystallization (9) as the starting melt to form crystals of the alkanesulfonic acid, of hydrates of the alkanesulfonic acid or of a mixture of both suspended in mother liquor, (c) performing a solid-liquid separation to remove the crystals from the mother liquor, (d) optionally washing the crystals to remove mother liquor adhering to the crystals.

Abstract: The present invention is in the field of processes for the generation of thin inorganic films on substrates, in particular atomic layer deposition processes. The present invention relates to a process comprising bringing a compound of general formula (I) into the gaseous or aerosol state and depositing the compound of general formula (I) from the gaseous or aerosol state onto a solid substrate, wherein R1, R2, R3, and R4 are independent of each other an alkyl group, an aryl group or a trialkylsilyl group, M is Mn, Ni or Co, X is a ligand which coordinates M, wherein at least one X is a neutrally charged ligand, m is 1, 2 or 3 and n is at least 1 wherein the molecular weight of the compound of general formula (I) is up to 1000 g/mol.

Abstract: The invention provides nucleic acid molecules which encodes a novel fatty acid desaturase, KCS, KCR and/or LACS from Thraustochytrium aureum and Sphaeroforma arctica. The invention also provides recombinant expression vectors containing the nucleic acid molecules, host cells into which the expression vectors have been introduced, and methods for large-scale production of long chain polyunsaturated fatty acids (LCPUFAs), e.g., ARA, EPA and DHA and for screening for delta-4 desaturases.