Abstract: The present invention provides a process for preparing 1,6-hexanediol having a purity of ?99.5% by weight by catalytically dimerizing acrylic esters and catalytically hydrogenating the hexenedioic diesters obtained in this way to 1,6-hexanediol by a) dimerizing C1- to C8-acrylic esters in the presence of at least one rhodium compound to give mixtures of predominantly 2- and 3-hexenedioic diesters, b) hydrogenating the resulting dimerizing effluent in the presence of chromium-free catalysts comprising predominantly copper as the hydrogenation component and c) purifying the crude 1,6-hexanediol obtained in this way by fractional distillation.

Abstract: The present invention relates to a composition comprising at least one polyfunctional aziridine compound and 1,4-diazabicyclo[2.2.2]octane and a process for its preparation. The present invention furthermore relates to the use of this composition as a curing component for formulations in the area of leather treatment, of coatings, of textile printing and of surface coatings.

Abstract: The invention relates to a process for preparing isocyanates by reaction of amines with phosgene in the presence of inert organic solvents in a reactor and subsequent work-up of the reaction mixture leaving the reactor, wherein the solvent is separated off in a two-stage or multistage, preferably two-stage, distillation process in which the solvent is separated off at a pressure of 0.1-15 bar in a first apparatus and at 1-900 mbar in a second apparatus or further apparatuses, with the heat of condensation of the solvent vapor from the first apparatus being used for partial or complete vaporization of solvent in the second apparatus.

Abstract: The invention relates to a foam comprising at least 70% by weight of carbon and having a mean cell size above 20 ?m, a porosity based on this cell size of from 35% to 99.5% and an open cell content above 90%, an internal surface above 50 m2/g, having cell struts whose cross section is a triangle having concave sides and having pores in the cell framework material having dimensions of from 0.2 nm to 50 nm and a volume of from 0.01 cm3/g to 0.8 cm3/g, and also to its use. It further relates to a process for producing a foam comprising at least 70% by weight of carbon by pyrolysis of polymer foams which comprise at least 30% by mass of a polymer material having a nitrogen content of more than 6% by mass and having a porosity of from 35 to 99.5% and an open cell content above 1%, have inorganics incorporated into the polymer foam and/or applied to the surface and/or are treated during and/or after the pyrolysis with water vapor and/or carbon dioxide and/or oxygen at above 400° C.

Abstract: The present invention relates to the manufacture of solid materials or shaped bodies containing at least one zeolite and being at least partly crystalline. Furthermore, the present invention relates to the solid materials or shaped bodies as such and to the use of these materials for reactions of compounds having at least one C—C double bond with at least one hydroperoxide. Specifically, the present invention relates to a process for the manufacture of a solid material containing at least one zeolite and being at least partly crystalline, wherein the synthesis of the said solid material involves at least one partial step of contacting at least one transition metal oxide source with at least one epoxide or hydrolysate thereof prior to or during the at least partial crystallization of said solid material.

Abstract: A liquid coating material in the form of a water-in-oil dispersion which is curable with actinic radiation, is substantially or completely free from organic solvents and has a pH<5, comprising (A) at least one constituent selected from the group consisting of low molecular mass, oligomeric, and polymeric organic compounds which contain at least one group which can be activated with actinic radiation, and also air-drying and oxidatively drying alkyd resins, (B) at least one acidic ester of polyphosphoric acid and at least one compound (b1) containing at least one hydroxyl group and at least one group which can be activated with actinic radiation, (C) at least one acidic ester of monophosphoric acid and at least one compound (c1) containing at least one hydroxyl group and at least one group which can be activated with actinic radiation, and (D) at least one acidic, corrosion-inhibiting pigment based on polyphosphoric acid; process for its preparation, and its use as a coil coating primer.

Abstract: Described are a method of killing microorganisms in aqueous industrial systems or products for industrial applications based on water by adding from 0.001 to 5% by weight of a water-soluble or water-dispersible polymer containing from 30 to 100 mol % of styrenesulfonic acid, from 0 to 40 mol % of an N-vinyllactam and/or N-vinylamine, and from 0 to 30 mol % of further free-radically polymerizable monomers as biocidal additive, and a method of protecting articles by applying an antimicrobial aqueous composition comprising such an additive.

Abstract: The invention relates to a continuous process for producing pseudoionones of general formulas (I) and (I?) as well as isomers thereof, whereby: R1 represents CH3 or (a); R2 and R3 represent hydrogen, CH3 or C2H5, and; R4 and R5 represent hydrogen or CH3. These pseudoionones are produced by reacting an aldehyde of formula (II) with an excess of a ketone of general formula (III), whereby R1, R2 and R3 have the aforementioned meanings, in the presence of water and alkali hydroxide at an increased temperature and in a homogeneous solution. The inventive process is characterized in that: a) the intermixing of the homogeneous solution consisting of aldehyde, ketone and aqueous alkali lye occurs at a temperature ranging from 10 to 120° C.

Abstract: The present invention relates to materials formed from superabsorbent polymer (SAP) and fibers that are obtainable by pressing at not less than 60° C. and not less than 3 bar. More particularly, the present invention relates to materials which are obtained by in situ polymerization of SAP precursor mixtures on the fiber. The present invention also relates to processes for producing such materials and to their use.

Abstract: A process for the preparation of highly reactive polyisobutenes is described, in which isobutene is polymerized in the presence of a complex of boron trifluoride and at least one cocatalyst in a liquid organic phase at a reaction temperature of from ?60 to ?4° C. and water is added in two stages to the organic phase for catalyst deactivation and catalyst extraction.

Abstract: The present invention relates to substituted perylene derivatives in which the substituent has a sterically stabilizing and/or electrostatically stabilizing effect. The perylene derivatives of the invention are particularly suitable as pigment dispersants. The present invention additionally relates to pigment preparations in which the perylene derivatives of the invention are used.

Abstract: An amine-containing mixture containing one or more amines, water, low-boilers and optionally high-boilers is fractionated by a process having the steps (iii) and (iv) and optionally the steps (i), (ii) and (v): (i) a (first) low-boiler fraction is separated off from the amine-containing mixture by distillation, (ii) a (first) high-boiler fraction is separated off from the amine-containing mixture by distillation, (iii) the amine-containing mixture is extracted with sodium hydroxide solution, producing an aqueous, sodium-hydroxide-containing first phase and an aqueous-organic, amine-, (further) low-boiler- and possibly (further) high-boiler-containing second phase, (iv) the aqueous-organic second phase, is distilled, producing essentially anhydrous amine as bottom-phase take off or sidestream takeoff in the stripping part of the distillation column, an amine/water azeotrop as sidestream takeoff in the enrichment part of the column and a (further) low-boiler fraction as overhead takeoff, and recycling the amin

Abstract: A process for the production of N-methyl pyrrolidone using gamma butyrolactone and mixed methylamines as starting materials, in a continuous process, in such operating conditions as to allow the production of high purity N-methyl pyrrolidone in high yields.

Abstract: A method of separating propylene oxide from a mixture (M) comprising propylene oxide and methanol, said method comprising (i) introducing said mixture (M) into an extractive distillation column; (ii) additionally introducing an extracting solvent into said extractive distillation column; (iii) distilling propylene oxide overhead from said extractive distillation column as top stream; (iv) withdrawing a bottoms stream from said extractive distillation column; (v) compressing the top stream obtained overhead in (iii) by means of at least one compressor to give a compressed vapor.

Abstract: A continuous process for preparing sugar alcohols by catalytic hydrogenation of an aqueous solution of a saccharide, which forms the corresponding sugar alcohol on hydrogenation, in the presence of a ruthenium catalyst which is obtainable by: i) single or multiple treatment of an amorphous silicon-dioxide-based support material with a halogen-free aqueous solution of a low-molecular-weight ruthenium compound and subsequent drying of the treated support material at below 200° C., ii) reducing the solid obtained in i) with hydrogen at from 100 to 350° C., step ii) being carried out immediately after step i), which comprises, before the hydrogenation, bringing the aqueous saccharide solution to be hydrogenated into contact with the support material.

Abstract: Alkyldiketene-containing aqueous polymer dispersions which are obtainable by miniemulsion polymerization of hydrophobic monoethylenically unsaturated monomers in the presence of alkyldiketenes, processes for the preparation of such polymer dispersions and the use of the thus obtainable dispersions as sizes for paper or as water repellents for leather, natural and/or manmade fibers and textiles.

Abstract: Highly planar non-polar a-plane GaN films are grown by hydride vapor phase epitaxy (HVPE).

Abstract: A process for preparing benzophenones of the formula I, where X may be chlorine, hydroxyl, methoxy or C1-C6-alkylcarbonyloxy, and Y may be chlorine or bromine, by reacting an acid chloride of the formula II where X and Y are as defined above with 3,4,5-trimethoxytoluene, which comprises carrying out the reaction in the presence of a) an aromatic hydrocarbon as a diluent and b) from 0.01 to 0.2 mol % of an iron catalyst, based on the acid chloride, c) at a temperature between 60° C. and the boiling point of the particular diluent.

Abstract: Isolated polynucleotide molecules that encode mature, wild-type and imidazolinone-tolerant acetohydroxyacid synthase large subunit (AHASL) polypeptides, and the amino acid sequences encoding these polypeptides, are described. Expression cassettes and transformation vectors comprising the polynucleotide molecules of the invention, as well as plants and host cells transformed with the polynucleotide molecules, expression cassettes, and transformation vectors, are described. Methods of using the polynucleotide molecules to enhance the resistance of plants to herbicides, and methods for controlling weeds in the vicinity of such plants are also described.

Abstract: A process is described for producing adsorbates suitable for human or animal nutrition and also cosmetics applications in which a component (A) to be adsorbed is applied to a carrier (C) using at least one stabilizer (B), the mean particle size of the carrier (C) being at least 80 ?m, with the proviso that, if the component (A) to be adsorbed is vitamin E, the mixture of (A) and (B) has an HLB value less than 7, and also with the proviso that if the component (A) to be adsorbed is an oil-soluble vitamin and the stabilizer (B) is a glyceride, the freezing point of the mixture of (A) and (B) is below or equal to 80° C. A description is also given of the use of the adsorbates which are thus obtainable.