Abstract: Fumed silanized silica with the following physico-chemical data: Grindometer value less than 20. mu. m Tamped density 25 to 85 g/l is prepared by grinding fumed silica which has been silanized. It can be used in silicone rubber.

Abstract: Rubber mixtures, including at least one rubber, a filler, an organosilicon compound of the formula I one rubber accelerator and one co-accelerator. The rubber mixtures are prepared by mixing at least one rubber, a filler, an organosilicon compound of the formula I, one rubber accelerator and one co-accelerator. The rubber mixtures can be used for production of moldings. Also disclosed is a process for preparation of the organosilicon compound of the formula I via transesterification.

Abstract: The present invention relates to nucleotide sequences encoding enzymatically active cobalamin-methionine synthase and functional fragments thereof that are modified in comparison to the respective wild-type enzyme such that said enzymes show reduced product inhibition by methionine. The present invention also relates to polypeptides being encoded by such nucleotide sequences and host cells comprising such nucleotide sequences. Furthermore, the present invention relates to methods for producing methionine in host organisms by making use of such nucleotide sequences.

Abstract: Rubber mixtures are prepared by using, alongside the other constituents, pyrogenically prepared silicon dioxide in the form of crusts whose tamped bulk density (to DIN EN ISO 787-11) is from 185 to 700 g/l.

Abstract: 4-amino-2,2,6,6-tetramethylpiperidine is prepared by reacting 2,2,6,6-tetramethylpiperidine-4-one with ammonia and hydrogen in the presence of nickel and/or cobalt catalyst and water. The main reaction is carried out at a pressure of at most 50 bar and a temperature of at most 120° C. up to a conversion of the 2,2,6,6-tetramethylpiperidine-4-one of at least 80%. Then, an after-reaction takes place at a higher temperature and at a higher pressure compared to the pressure and temperature of the main reaction.

Abstract: A storage stable mixture containing 86 to 97% by weight of 2-hydroxy-4-methylthiobutyronitrile, 2 to 14% by weight of water, 0.05 to 0.5% by weight of HCN and having a pH of 1 to 4, measured using a pH electrode at 23° C. is provided. A method to produce the storage stable mixture and its use in manufacture of DL-methionine or 2-hydroxy-4-methylthiobutyric acid is also provided.

Abstract: The invention relates to a method for producing hydridosilanes from halosilanes by a) reacting i) at least one halosilane of the generic formula SinX2n+2 (with n?3 and X?F, Cl, Br and/or I) with ii) at least one catalyst of the generic formula NRR'aR?bYc with a=0 or 1, b=0 or 1, and c=0 or 1, and formula (I), wherein aa) R, R? and/or R? are —C1-C12 alkyl, —C1-C12 aryl, —C1-C12 aralkyl, —C1-C12 aminoalkyl, —C1-C12 aminoaryl, —C1-C12 aminoaralkyl, and/or two or three groups R, R? and R? (if c=0) together form a cyclic or bicyclic, heteroaliphatic or heteroaromatic system including N, with the proviso that at least one group R, R? or R? is unequal —CH3 and/or wherein bb) R and R? and/or R?' (if c=1) are —C1-C12 alkylene, —C1-C12 arylene, —C1-C12 aralkylene, —C1-C12 heteroalkylene, —C1-C12 heteroarylene, —C1-C12 heteroaralkylene and/or —N?, or cc) (if a=b=c=0) R??C-R?? (with R???—C1-C10 alkyl, —C1-C10 aryl and/or —C1-C10 aralkyl), while forming a mixture comprising at least one halosilane of the generic formula S

Abstract: Sol gel process for producing hydrophobic transparent films for polymeric substrates, the process relates to the sol-gel reaction of silicon alkoxide carried out in certain conditions. The sols obtained were, without limiting, spin- or dip-coated onto polymeric substrates then thermally cured into transparent-abrasion resistant coating. Such coating transmit visible light, but absorb wavelengths of ultraviolet light which cause degradation of the substrate surface and resultant adhesion-loss of the protective coating upon weathering.

Abstract: A method for the production of 2-hydroxy-4-(methylthio)butyronitrile having good storage stability in a multi-zone reactor, is provided. 3-methylmercaptopropionaldehyde is reacted with hydrogen cyanide in the presence of a base as catalyst in a main reaction zone of the multizone reactor to form a reaction mixture comprising the 2-hydroxy-4-(methylthio)butyronitrile, unreacted 3-methylmercaptopropionaldehyde, the catalyst and residual amounts of gaseous hydrogen cyanide. The residual gaseous hydrogen cyanide is removed from the main reaction zone to an absorption and post-reaction zone of the reactor which comprises a mixture of 3-methylmercaptopropionaldehyde and the catalyst; and the gaseous hydrogen cyanide is further reacted with the 3-methylmercaptopropionaldehyde in the absorption and post reaction zone. A molar ratio of hydrogen cyanide to 3-(methylthio)propanal in the main reaction zone is from 0.98 to 1.03.

Abstract: The invention relates to a recombinant coryneform bacterium which secretes an organic chemical compound and in which the sugR gene which codes for a polypeptide having the activity of an SugR regulator has been attenuated. The invention further relates to a processes for using this bacterium for the fermentative preparation of organic chemical compounds.

Abstract: The invention relates to a method for yielding boron-depleted chlorosilanes from a chlorosilane mixture containing boron by means of separation by distillation of a boron-enriched distillation flow. The invention further relate to a device for yielding boron-depleted chlorosilanes from a chlorosilane mixture containing boron.

Abstract: A carnosic acid-rich plant extract can be produced by extracting a dried and comminuted plant material containing carnosic acid with supercritical CO2 at a pressure of at least 200 bar and at a temperature of at most 100° C. In a first step, super-critical CO2 in a quantity of 10 to 50 kg of CO2 per kg of plant material is passed through the plant material to obtain a first CO2 extract. In a second step, additional supercritical CO2 is passed through the plant material to obtain a second CO2 extract, and a carnosic acid-rich plant extract is separated from the second CO2 extract by lowering the pressure.

Abstract: The invention relates to new ?-hydroxyalkylamides, to a method for production of same and to the use of same.

Abstract: The present invention relates to a method for coating a carrier during the production of an electrode for electrical energy stores, in particular for lithium ion cells, using a specific solvent and/or dispersant, characterized in that the solvent and/or dispersant is or comprises N-ethylpyrrolidone.

Abstract: The present invention relates to a furnace (12) for melting heated glass using burners (13), wherein the combustion energy is at least partially produced by oxy-fuel combustion, and wherein at least a portion of the oxygen used in the burners (13) is produced by separation, on a ceramic separation membrane (18), from a gaseous mixture including oxygen, the oxygen from the separation being directly channeled into at least one burner (13).

Abstract: Rubber mixtures containing at least one rubber and an organosilicon compound of the general formula (I) (Q-)kG-Si(—O—CX1X2—CX1X3—)3N. The rubber mixture is prepared by mixing at least one rubber and an organosilicon compound of the formula (I). The rubber mixtures can be used for the production of moldings.

Abstract: The present invention relates to a liquid phase process for producing indium oxide-containing layers from nonaqueous solution, in which an anhydrous composition containing at least one indium oxo alkoxide of the generic formula MxOy(OR)z[O(R?O)cH]aXb[R?OH]d where x=3-25, y=1-10, z=3-50, a=0-25, b=0-20, c=0-1, d=0-25, M=In, R, R?, R?=organic radical, X?F, Cl, Br, I and at least one solvent are applied to a substrate, optionally dried, and converted to an indium oxide-containing layer, to the layers producible by the process according to the invention and to the use thereof.

Abstract: The invention relates to matted UV varnishes comprising silicon dioxide, the surface thereof having been modified by means of treatment with a multiple bond organopolysiloxane so as to be particularly well-suited for use as a matting material for UV varnishes, and to a method for producing same.

Abstract: The invention relates to a downhole heat exchanger for extracting geothermal energy from a borehole, wherein the inner surface of the exchanger tube comprises the following roughness values: a) an arithmetic mean roughness Ra according to DIN EN ISO 4287 in the range of 1 to 15 ?m, b) an averaged roughness Rz according to DIN EN ISO 4287 in the range of 8 to 80 ?m, and c) a maximum roughness depth Rz1 max according to DIN EN ISO 4287 in the range of 10 to 500 ?m, comprising an improved precipitation film during operation, such that the entire surface of the exchanger tube is uniformly wetted.

Abstract: The present invention relates to a method for coating substrates, including applying a composition to a first side of the substrate, the composition containing an inorganic compound, drying the applied composition, applying at least one coating to the first side of the substrate to which the composition is applied, the coating containing a silane, drying the applied coating, and applying at least one barrier layer to a second side of the substrate.