Abstract: The present invention relates to a process for crystallizing small particles with a narrow particle size distribution. The crystals of the invention are obtained by introducing ultrasound into a solution or suspension of the substance to be crystallized while simultaneously adjusting a particular specific stirring power.

Abstract: The invention relates to a method for the heterogenically catalyed gas-phase partial oxidation of precursor compounds of (meth)acrylic acid in a fixed catalyst bed, containing as the catalyst an activated mass of mixed oxide, shaped to form a geometric body. Said geometric body is a geometric base body, into whose surface a cavity is incorporated.

Abstract: A process for fractionating a crude C4 fraction comprising butanes, butenes, 1,3-butadiene and small amounts of other hydrocarbons including C4-acetylenes, by extractive distillation using a selective solvent, wherein the crude C4 fraction (1) is fed into the middle region of a first extractive distillation column (K I) and the selective solvent (2) is fed into the column at a point above that at which the crude C4 fraction (1) is introduced and a gaseous side stream (3) which comprises the C4-acetylenes together with predominantly the selective solvent and in which the concentration of the C4-acetylenes is below the spontaneous decomposition limit is taken off from the first extractive distillation column (K I) at a point below the feed point for the crude C4 fraction (1) and an overhead stream (5) comprising the components which are less soluble than the C4-acetylenes in the selective solvent is taken off from the top of the first extractive distillation column, is proposed.

Abstract: Thermally curable one-component coating materials having a solids content of from 40 to 80% by weight and an electrical resistance in the range from 600 to 1300 k?, and process for preparing them, and their use.

Abstract: A process for operating a hydraulic wash column, in which the position of the buildup front in the wash column is positioned by means of the flow rates of control liquor conducted into the wash column and/or by means of the flow rate of the suspension conducted into the wash column, and the flow rate determination is with the aid of the pressure difference which exists in the column between points in the suspension zone disposed upstream of the buildup front and points in the zone projecting from the buildup front up to the end of the crystal bed.

Abstract: Finely divided binders in powder form composed of vinyllactam polymers, where the binders have an average particle size of up to 35 ?m and an apparent density of less than 0.2 g/ml.

Abstract: A process for preparing a zeolitic material, comprising (i) preparing a mixture comprising the at least one silicon containing precursor compound from which the zeolitic framework is formed, at least one pore forming agent, and at least one polymer which has an essentially spheroidal geometry in the mixture; (ii) crystallizing the zeolitic material from the mixture obtained in (i) to obtain the crystallized zeolitic material in its mother liquor.

Abstract: An aqueous latex coating composition and method of making an aqueous latex coating composition that comprises at least one oligomeric ethylene glycol derivative having the structure RO—(CH2—CH2—O—)n—H, at least one latex polymer, and water, wherein R is H or Cl—C4 alkyl and preferably H, and n is from 3 to 9, preferably from 3 to 8, and more preferably from 3 to 6. The oligomeric ethylene glycol derivative functions as both a coalescing solvent and freeze-thaw stabilizer without contributing to the VOC content of the composition.

Abstract: A process for preparing maleic anhydride by oxidizing n-butane in the gas phase under heterogeneous catalysis with oxygen-containing gases over a vanadium-, phosphorus- and oxygen-containing catalyst in a reactor unit at a temperature in the range from 350 to 500° C., removing the maleic anhydride formed to form a gas stream which comprises unconverted n-butane and water and recycling at least a portion of the unconverted n-butane to the reactor unit, by feeding to the reactor unit an inlet stream having an n-butane concentration of from 0.5 to 1.5% by volume and an oxygen concentration of from 5 to 21% by volume, establishing a pressure at the inlet to the reactor unit of from 0.4 to 2 MPa abs, and converting from 40 to 100% of the n-butane from the inlet stream per reactor pass.

Abstract: Substituted 6-(2-halogenphenyl)-triazolopyrimidines of formula I in which R1 denote alkyl, alkenyl, alkynyl, alkadienyl, haloalkyl, haloalkenyl, cycloalkyl, phenyl, naphthyl, or a 5- or 6-membered saturated, unsaturated, or aromatic heterocycle, containing one to four nitrogen atoms or one to three nitrogen atoms and one sulfur or oxygen atom, wherein R1 and R2 radicals may be substituted as defined in the description, R2 denote hydrogen, or a group mentioned for R1; or R1 and R2 together with the interjacent nitrogen atom represent a 5- or 6-membered heterocycle, containing one to four nitrogen atoms or one to three nitrogen atoms and one sulfur or oxygen atom, which ring may be substituted as defined in the description; Hal is halogen; L1, L3 independently denote hydrogen, halogen, or alkyl; L2 is hydrogen, halogen, haloalkyl, or NH2, NHRb, or N(Rb)2, wherein Rb is as defined in the description, wherein at least one from L1, L2, and L3 is not hydrogen; X is halogen, cyano, alkyl, alkoxy, haloalkox

Abstract: The present invention relates to a process for isomerizing reactant allyl alcohols to product allyl alcohols in the presence of a catalyst, wherein the reactant allyl alcohol is rearranged to product allyl alcohol in semicontinuous or continuous mode in a catalyst-containing suitable reactor. In particular, the process according to the invention is used to prepare linalool from Geraniol and/or nerol.

Abstract: The present invention relates to a catalyst composition for the oxychlorination of ethylene, comprising a mixture of metal salts on a support, where said metal salts are applied to the support in such ratios that the catalyst composition comprises a) from 3 to 12% by weight of copper as copper salt, b) from 0 to 3% by weight of an alkaline earth metal as alkaline earth metal salt, c) from 0 to 3% by weight of an alkaline metal as alkaline metal salt, d) from 0.001 to 0.1% by weight, preferably from 0.005 to 0.05% by weight, of at least one metal selected from the group consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum, and/or from 0.0001 to 0.1% by weight, preferably from 0.001 to 0.05% by weight, of gold, as corresponding metal salt or tetrachloroauric acid, where all percentages by weight are based on the total weight of the catalyst including support material.

Abstract: The present invention relates to a process for the thermal isomerization of a mixture of all-E-lycopene and its Z isomers of any composition to increase the proportion of all-E, wherein the isomerization takes place in a polar solvent in which lycopene is only slightly soluble.

Abstract: A method of transferring an aqueous polymer dispersion with a temperature ?50° C. from a vessel 1 via a connecting line to a vessel 2 is described.

Abstract: A transgenic plant transformed by an Ion Transporter Stress-Related Polypeptide (ITSRP) coding nucleic acid, wherein expression of the nucleic acid sequence in the plant results in increased tolerance to environmental stress as compared to a wild type variety of the plant. Also provided are agricultural products, including seeds, produced by the transgenic plants. Also provided are isolated ITSRPs, and isolated nucleic acid coding ITSRPs, and vectors and host cells containing the latter.

Abstract: The invention relates to thermoplastic moulding materials containing A) 10–98 wt. % of at least one thermoplastic polyester, B) 1–30 wt. % of a flame resistant material combination made of 100 wt. % B), b1) 20 99 wt. % of a flame resistant material containing halogen b2) 1–80 wt. % of an antimonoxide, C) 0.01–5 wt. % of tartaric acid or tartrates or a mixture thereof, D) 0 is 5 wt.-% of at least one stabilisator containing phosphorous, E) 0–70 wt.-% of additional materials, whereby the sum of the wt % of the components A)–E) is 100%.

Abstract: Disclosed is a method for evaluating chip performance of a cured coating system. In one embodiment, the method includes providing a coated substrate comprising a substrate and a cured film of a first coating composition thereon, measuring elastic work energy (We/Wtot) of the cured film, and calculating a % C.P. of the cured film via the formula: % C.P.=7.61636?0.225473 (We/Wtot) wherein a % C.P. of equal to or less than about 3.5% correlates to a total paint loss of equal to or less than 5% of a coating system comprising the first coating composition. The disclosed method predicts the gravelometer chip performance of a cured multilayer coating system comprising a first coating composition and a topcoat by measuring the measuring elastic work energy (We/Wtot) of the cured first coating system alone. In one embodiment, chip performance can be predicted without topcoat application and independent of topcoat composition.

Abstract: Polyesters comprising at least one pendant and/or terminal group which can be activated with actinic radiation, preparable by reacting 1. a polyester (i) containing at least one pendant and/or terminal hydroxyl group with at least one carboxylic acid (i) or at least one ester (i) of a carboxylic acid (i) containing at least one bond which can be activated with actinic radiation, or 2. a polyester (ii) containing at least one pendant and/or terminal carboxylic acid group or at least one pendant and/or terminal carboxylic ester group with at least one hydroxyl-containing compound (ii) containing at least one bond which can be activated with actinic radiation in the presence of at least one organism and/or enzyme which catalyzes the transesterification or esterification; process for preparing them, and their use.

Abstract: Polyamides, oligomers thereof or mixtures thereof, if required with further reaction products, are prepared by reacting aminonitriles or dinitriles and diamines or a mixture containing aminonitrile, dinitrile and diamine, and, if required, further polyamide-forming monomers and/oligomers with water in a reactor (1) having a vertically oriented longitudinal axis, by a process in which, in the reactor (1), the reaction product is removed from the bottom and ammonia formed and any further low molecular weight compounds formed and water are taken off via the top (2), wherein the reactor (1) has at least two chambers (4) arranged one on top of the other in the longitudinal direction, the chambers (4) being separated from one another by liquid-tight trays (5), each chamber (4) being connected by a liquid overflow (6) to the chamber (4) directly underneath and a liquid product stream being taken off by the liquid overflow (6) of the lowermost chamber (4), the gas space (7) above the liquid level in each chambe

Abstract: A method of charging a vertical tube having an internal diameter of 50 mm or less with catalyst particles, which comprises introducing a filling aid into the vertical tube, where the filling aid comprises a flexible elongated body and the ratio of the cross section of the flexible elongated body to the cross section of the tube is from 0.003 to 0.08, and introducing the catalyst particles into the tube.

Abstract: A conveying system comprising an upfeed conveyor for conveying individual stock items upwardly to a press or the like and a generally horizontal infeed conveyor for conveying endwise a stack of items positioned on edge thereon to the upfeed conveyor which has several sections all of which are activated to move the item delivered thereto upwardly and wherein the lower sections are periodically stopped and the uppermost section is freely adapted to move to facilitate withdrawal of the item in transit from the upfeed conveyor, the infeed conveyor being vertically adjustable and tiltable with respect to the upfeed conveyor for handling different sized stock items, and wherein conveyors are so juxtaposed that the item in transit on the upfeed conveyor shields the upper portion of the next item from engaging movable section until the item in transit is completely withdrawn from the upfeed conveyor and wherein a retard is provided with an items gauge shield to insure single item feeding.