Abstract: In a process for heterogeneously catalyzed partial gas phase oxidation of propene to acrolein, the starting reaction gas mixture is oxidized at a propene loading of <160 l (STP) of propene/l of fixed catalyst bed·h over a fixed catalyst bed which is accommodated in two successive reaction zones A, B, the highest temperature of the reaction gas mixture within reaction zone A being above the temperature of the reaction gas mixture within reaction zone B.

Abstract: A process for preparing (meth)acrylic acid by conducting a saturated hydrocarbon precursor compound through a catalyst bed I whose catalysts I have, as the active composition, a multimetal oxide I which has a specific X-ray diffractogram and contains the elements Mo and V, at least one of the elements Te and Sb, and also at least one of the elements from the group consisting of Nb, Ta, W, Ce and Ti, wherein the catalyst bed I is interrupted by at least one catalyst bed II whose catalysts II have, as the active composition, a multimetal oxide II which contains the elements Mo, Bi and Fe.

Abstract: A novel thixotropic agent comprising urea crystals which comprises at least one compound containing at least one functional group having at least one bond which can be activated with actinic radiation; a novel process for preparing a thixotropic agent comprising urea crystals by reacting at least one primary and/or secondary amine and/or water with at least one polyisocyanate in a liquid organic medium consisting of or comprising at least one compound containing at least one functional group having at least one bond which can be activated with actinic radiation; and the use of the thixotropic agents to prepare coating materials, adhesives and sealing compounds curable thermally and with actinic radiation.

Abstract: Microcapsules having a capsule core comprising water-soluble organic substances, and a capsule coating which is a condensate of formaldehyde resins and/or alkyl ethers thereof, a process for their preparation, their use, and compositions comprising the microcapsules.

Abstract: A solid oral pharmaceutical dosage form of a sympathomimetic with impeded extractability of the sympathomimetic, comprising I) a sympathomimetic (component I) II) an excipient mixture (component II) composed of a) 5 to 50% by weight of hydroxyalkylcelluloses or alkylcelluloses or mixtures thereof b) 5 to 70% by weight of xanthan c) 5 to 50% by weight of an alkaline earth metal salt of a C10-C30 fatty acid d) 10 to 70% by weight of an alkali metal or alkaline earth metal salt of a mineral acid, of a sulfonic acid or of a C2-C6 carboxylic acid or mixtures thereof, where the total of components a) to d) is 100% by weight, where the ratio of active ingredient to excipient mixture II) is from 1:2 to 3:1 by weight.

Abstract: The present invention pertains transgenic plant cells and mature plants comprising Oxidoreductase Stress Related Proteins (ORSRP) resulting in increased tolerance and/or resistance to environmental stress as compared to non-transformed wild type cells and methods of producing such plant cells or plants. Further object of the present invention are isolated ORSRPs or ORSRP encoding nucleic acids from plants.

Abstract: The invention relates to methods for generating or increasing the resistance, in plants, to at least one biotic or abiotic stress factor, preferably to plant pathogens, by increasing the expression of at least one Bax inhibitor 1 (BI1) protein in at least one plant tissue, with the proviso that the expression in the leaf epidermis remains essentially unchanged. The invention furthermore relates to recombinant expression cassettes and vectors which comprise a nucleic acid sequence coding for a BI protein under the control of a tissue-specific promoter, the promoter having essentially no activity in the leaf epidermis. The invention furthermore relates to recombinant plants transformed with said expression cassettes or vectors, to cultures, parts or recombinant propagation material derived from these plants, and to the use of same for the production of foodstuffs, feeding stuffs, seed, pharmaceuticals or fine chemicals.

Abstract: Aqueous dispersions comprising at least one ethylene copolymer wax comprising from 60 to 99.5% by weight of ethylene and from 0.5 to 40% by weight of at least one ethylenically unsaturated carboxylic acid in copolymerized form and also at least one hydrophobic low molecular weight organic substance.

Abstract: A process is described for preparing polyisobutene having a content of terminal vinylidene groups of at least 75 mol % by polymerizing isobutene or isobutenic hydrocarbon mixtures in the liquid phase in the presence of a boron trifluoride complex catalyst of the composition (BF3)a.L1b.L2c.L3d where L1 is water, a primary C1-C5-alkanol and/or a secondary C3-C5-alkanol, L2 is at least one aldehyde and/or one ketone, L3 is an ether having at least 5 carbon atoms, a secondary alkanol having at least 6 carbon atoms, a primary alkanol having at least 6 carbon atoms and/or a tertiary alkanol, the b:a ratio is in the range from 0.9 to 3.0, the c:a ratio is in the range from 0.01 to 0.5, and the d:a ratio is in the range from 0 to 1.0.

Abstract: The invention relates to a process for the biotransformation of carotenoids using enzymes having cytochrome P450 monooxygenase activity; in particular monooxygenases from thermophilic bacteria, in particular of the genus Thermus sp.

Abstract: Polyamide containing a compound which bears at least one hydroxy group and has chemical bonding by way of an amide group to the end of the polymer chain, process for preparing this polyamide, and also fibers, films, and moldings, comprising at least one such polyamide.

Abstract: The invention relates to a method for producing an amino acid comprising culturing a microorganism of the genus Corynebacterium or Brevibacterium wherein said microorganism is partially or completely deficient in at least one of the gene loci of the the group which is formed by otsAB, treZ and treS, and subsequent isolation of the amino acid from the culture medium.

Abstract: In the Taylor reactor, in accordance with a first alternative of the invention, the reactor housing and/or the rotor are/is equipped such that the cross section of the reaction volume initially rises from the inlet to the outlet but the rise in cross section decreases in the direction of the outlet at least over part of the length of the rotor. In accordance with a second alternative of the invention, which may also find application in addition to the first, the end face of the rotor is designed in such a way that the reaction volume opens out into the outlet in such a way that it is at least substantially free from deadspaces (FIG. 4).

Abstract: A process for preparing polyether polyols includes a precipitation step, a recrystallization step, and a reaction step. In the precipitation step, a multimetal cyanide compound is precipitated by reaction of a metal salt with a cyanometalate compound. In the recrystallization step, the multimetal cyanide compound precipitated above is recrystallized by adding further metal salt and/or further cyanometalate compound. The recrystallization forms a multimetal cyanide catalyst compound. In the reaction step, an initiator and one or more alkylene oxide are reacted in the presence of the multimetal cyanide catalyst compound.

Abstract: Olefins having at least 6 carbon atoms are hydroformylated in the presence of a homogeneous catalyst in a continuous process in which a) a vertical tall cylindrical reactor (1) whose interior space is divided by means of internals (2) into at least two reaction chambers which extend essentially in the longitudinal direction of the reactor is used, b) at least one olefin is introduced into the reactor together with synthesis gas at the lower end of the first reaction chamber, c) a partially reacted reaction mixture is conveyed from the upper end of a reaction chamber to the lower end of a next reaction chamber; and d) the hydroformylated olefin is taken off at the upper end of the last reaction chamber. The process allows a high conversion at a given reactor volume.

Abstract: The invention relates to acrylate polymers comprising a K-value ranging from 10 to 60, which can be obtained by the radical polymerization of: 30 to 99 wt. % of tert-butyl acrylate and/or tert-butyl methacrylate designated as monomer A; 1 to 28 wt. % of acrylic acid and/or methacrylic acid designated as monomer B, and; 0 to 60 wt. % of a radically copolymerizable monomer or of a radically copolymerizable monomer mixture designated as monomer C, whereby at least one of monomers C yields a homopolymer with a glass-transition temperature lower than 30° C., with the provision that the wt. %'s total 100. The radical polymerization is carried out in the presence of alkane thiols with a C chain length of C 14 to C 22. The invention also relates to acrylate polymers comprising a K-value ranging from 10 to 60, which can be obtained by the radical polymerization of: 30 to 99 wt. % of tert-butyl acrylate and/or tert-butyl methacrylate designated as monomer A; 1 to 28 wt.

Abstract: A process for preparing (meth)acrolein and/or (meth)acrylic acid by heterogeneously catalyzed gas phase partial oxidation of an organic precursor compound over a fresh fixed catalyst bed, in which the process is started up at a reduced hourly space velocity of charging gas mixture on the fixed catalyst bed.

Abstract: The present invention relates to catalyst systems of the Ziegler-Natta type, to a process for preparing them, to their use for the polymerization of olefins and to ethylene copolymers which can be prepared using this catalyst system.

Abstract: A biodegradable thermoplastic molding composition comprises a) at least one biodegradable thermoplastic copolyester, and b) based on the total weight of the thermoplastic molding composition, from 0.01 to 15% by weight of at least one hydrophobicized phyllosilicate. A process for preparing the molding composition is described, as is a process for producing moldings, films or fibers from the molding composition.

Abstract: Process for free-radical polymerization in the presence of a regulator which, following free-radical H-abstraction to form an aromatic system, eliminates a free-radical leaving group which starts a new free-radical chain.