The invention described herein relates to a process for the catalytic epoxidation of olefins with hydrogen peroxide in a continuous flow reaction system, wherein the reaction mixture is passed through a fixed catalyst bed in down-flow operation mode and the reaction heat is at least partially removed during the cour...

A fabric softener composition in which a blend of high mono alkyl MDEA and TEA ester quats is provided. The fabric softener composition includes a blend of from about 15 to about 65%, by weight of the total blend, of a triethanol amine ester quat and from about 35 to about 85% , by weight of the total blend, o...

The invention provides organosilicon compounds of the general formula I R1R2R3Si-R4-S-Zn-S-R4-SiR1R2R3 (I) wherein R1, R2, R3 independently, represent H, a halogen, alkyl or alkoxy and R4 represents an alkylidene group, their preparation and their use in rubber mixtures.

A molding composition which comprises the following components: I. from 97 to 80 parts by weight of a polyetheramide based on a linear aliphatic diamine having from 6 to 14 carbon atoms, on a linear aliphatic or aromatic dicarboxylic acid having from 6 to 14 carbon atoms, and on a polyetherdiamine which has at leas...

Organosilicon compound of the general formula is prepared by reacting triazine compounds with functional groups (e.g. chlorine) and corresponding compounds (e.g. mercapto). The organosilicon compound can be used in rubber mixtures.

The invention relates to a high-surface, highly dispersible precipitation silicic acid, a method for the production thereof and the use thereof as tyre filler material for commercial vehicles, motor bikes and high-speed vehicles.

A cyclic anlhraquinone process for producing hydrogen peroxide using at least two differently substituted 2-alkylanthraqulnones and/or their tetrahydro derivatives. The working solution to be used contains (i) at least one reaction carrier from the series 2-(4-methyl-3-pentenyl) anthraquinone (IHEAQ), 2-(4-methylpen...

The invention relates to a process for the production of organosilylalkyl polysulfanes by reacting an organosilylalkyl halide and an anhydrous or virtually anhydrous ionic sulfide and elementary sulfur, wherein the elementary sulfur and organosilylalkyl halide are suspended in a polar organic solvent and the ionic s...

THE INVENTION CONCERNS A BEADED BLACK CONTAINING AT LEAST ONE PELLE4TISING ADDITIVE AND AT LEAS ONE SYNTHETIC OIL.THE BEADED BLACK CAN BE PRODUCED IN A PELLETISING MACHINE AND USEDE AS A FILLER AND/OR PIGMENT IN RUBBER AND PLASTIC ARTICLES AND AS A PPIGMENT FRO THE4 PRO0DUCTION OF PRINTING INKS. ...

A method for the preparation of the granules from pyrogenically prepared silicon dioxide having the following physicochemical properties: Average grain size: 10 to 120 m BET surface area: 40 to 400 m2/g Pore volume: 0.5 to 2.5 ml/g Pore size distribution; less than 5% of the total pore volume exists of pored ...

A bubble column comprising a column-shaped container (1) with base (3), middle (2) and head (4) sections, one or more perforated plates (5) arranged horizontally in the middle section, the open area of these being 3 to 20%, devices for the supply and removal of a liquid (9 and 20) and of a gas phase (11 and 12) for ...

The invention relates to a highly dispersible precipitated silica having a high surface area, to a method for the production thereof, and to the use of the same as a tyre filler for utility vehicles, motorbikes and high-speed vehicles.

The invention relates to a method for the production of 3-(methylthio)propanal and 2-hydroxy-4-(methylthio)butanitrile by catalysed addition of methylmercaptan to acrolein and hydrogen cyanide to 3-(methylthio)propanal.

The use is described of reactive hotmelt adhesives based on copolyamide in hybride components. These hybrid components find application in, for example, vechicle construction and aircraft construction.

The invention relates to an interlining comprising double dots for the coating and/or laminating of surface structures. Said interlining is characterised in that the top dot and base dot are based on an amine-terminated, cross-linkable copolyamide and that the base dot in addition contains a cross-linking agent and ...

The present invention relates to a polymer powder which has been produced from dispersion, and to the use of this powder for shaping processes, and to moldings produced from this polymer powder. The dispersion comprises at least one polymer component and one water-soluble component, which in turn comprises at least ...

A process for producing coldings with condensing up of a polyamide molding composition by means of a compound having at least two carbonate units wherein a polyamide molding composition is made available, a mixture of the polyamide molding composition and the compound having at least two carbonate units is prepared ...

A process for producing moldings with condensing up of a polyamide molding composition whose polyamide component contains, as a result of the method of preparation, at least 5 ppm of phosphorus in the form of an acidic compounds by means of a compound having at least two carbonate units wherein from by weight based ...

The present invention relates to a polymer powder which comprises block polyetheramide, and to the use of this powder for shaping processes, and to moldings produced from this polymer powder. The shaping processes are layer-by-layer processes which use powder, where regions of the respective layer are selectively m...

The invention relates to an interlining comprising double dots for the coating and/or laminating of surface structures. Said interlining is characterised in that the top dot is based on an amine-terminated, cross-linkable copolyamide and the base dot consists of an OH-terminated copolyester and in addition contains ...

Flame-hydrolytically produced titanium dioxide powder that is present in the form of aggregates of primary particles, and has a BET surface of 20 to 200 m/g, a half width (HW) [nm] of the primary particle distribution of HW = a x BETf where a = 670x10-9 m /g and -1.3 <= f <= -1.0 and the proportion of particles with...

The invention relates to coated peroxygen compounds; in particular coated sodium percarbonate particles, with a delayed release of the active oxygen ((= increased dissolving time) Particles according to the invention comprise an innermost, shell layer, comprising at least one hydrate-forming inorganic salt, an...

The invention relates to precipitated silicic acids which have extremely low microporosity and high rubber activity. The invention also relates to a method for the production and the use thereof as a filling agent for rubber mixtures.

Process and device for the preparation of inorganic materials, in which salt solutions and solids are mixed with one another and a solid is precipitated out by addition of a further salt solution, the suspension is frozen and the solvent is removed. The solid can be investigated for its catalytic properties. ...

The present invention relates to a process for the resolution of derivatives of alpha-amino acids. In particular the process is concerned with the resolution of a mixture of enantiomers of N-protected amino acids by crystallization with enantiomerically pure N-unprotected beta-amino acid derivatives. ...

Aluminium oxide powder produced by flame hydrolysis and having a large surface area Aluminium oxide powder produced by flame hydrolysis and consisting of aggregates of primary particles, having a BET surface area of from 100 to 250 m2/g, a dibutyl phthalate absorption of from 50 to 450 g/100 g of aluminium oxide po...

Bulk materials are filled in the dry state, under an inert gas atmosphere, into a transporting vessel, which then has an excess inert gas pressure. The operation of emptying the bulk material out of the transporting vessel likewise takes place under an inert gas atmosphere. The method and the apparatus are suitabl...

The invention relates to a process for the preparation of an organosilicon compound of the general formula (I) (R1R2R3SiR4)2Sx (I) by reacting haloalkoxysilanes of the general formula (II) R1R2R3SiR4X (II) with a dry polysulphide of the general formula (III) M2SZ (III) and/or dry sulphide of the general formul...

Aggregated crystalline silicon powder with a BET surface area of 20 to 150 m<2>/g. It is prepared by subjecting at least one vaporous or gaseous silane and optionally at least one vaporous or gaseous doping material, an inert gas and hydrogen to heat in a hot wall reactor, cooling the reaction mixture or allowing th...

The invention relates to a method for producing 2-amino-4,6-dichloro-5-formamidopyrimidine from 2,5-diamino-4,6-dihydroxypyrimidine or a salt thereof. According to said method, a) 2,5-diamino-4,6-dihydroxypyrimidine or the salt or tautomer forms thereof are reacted with a chlorination agent and a formamide of formul...

The invention relates to 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 pro...

Process for the catalytic preparation of aryl olefins, dienes, diaryls, benzoic acid derivatives, acrylic acid derivatives, arylalkanes, alkynes, aryl ketones, carbonyl compounds or amines from aryl halides or vinyl halides, characterized in that catalysts containing at least one phosphane ligand of formula (I) is ...

A decorative film whose outer layer is composed of a polyamide composition which comprises the following components: a) from 50 to 100 parts by weight of polyamide which can be prepared from the following monomers: a) from 70 to 100mol% of diamine, selected from m-xylylenediamine, p-xylylenediamine and mixtur...

Dispersion comprising, in addition to water, 0.5 to 20 wt.% of hydrophobic silica, 0.01 to 10 wt.% of a gelling or viscosity-increasing additive, 0.1 to 1 wt.% of a preservative and 0 to 1 wt.% of a surface-active substance. It is prepared by a procedure in which the individual components are dispersed successively ...

The present invention relates to the use of a polymer powder which comprises specific polyesters for shaping processes, and also to moldings produced from this polymer powder. The shaping processes are layer-by-layer processes which use powder, regions of the respective layer being selectively melted via introducti...

The present invention relates to a sequence for the preparation of amino acids, for example alpha amino acids, in particular methionine, by making use of an amidocarbonylation reaction and reuse of the catalyst.

The invention relates to a device for fixing and positioning in tubes and to the use thereof for tubular reactors.

The present invention relates to a sequence for the preparation of amino acids,for example alpha amino acids,in particular methionnie,by making use of an amidocarbonylation reaction in the presence of cobalt carbonyl catalyst and separating the catalyst in the form of a Co(N-amino acid)2 compound. ...

The present invention is aimed at a process for the preparation of enantiomerically enriched compounds of general formula (I). These are obtained by classical resolution of the corresponding acid using a chiral amino base in organic solvents.

The invention relates to a method for purifying CO2 exhaust gas flow in order to remove chemical compounds and for returning purified gas flows to a production process, in particular to a methyonine production process, wherein said gas is exposed to the following operations consisting a) in dissolving the gas in wat...

In the present application protection is sought for compounds of the general formula (I) as ligands for reactions catalysed by transition metals.The preparation thereof and use thereof ,in particular for the preparation of B-amino acids,is also discussed.

The present invention relates to the use of guanidinoacetic acid and/or salts thereof as feed additive, in predominantly vegetarian diets, in particular use being made of salts with hydrochloric acid, hydrobromic acid and phosphoric acid.The use proceeds especially in individual doses from 0.01 to 100 g/kg of feed...

The present invention relates to a highly disperse precipitated silica which has a high surface area, to a process for preparing it, and to its use as a tire filler for commercial vehicles, motorbikes, and high-speed vehicles.

A process for production of a composite part which comprises the following components: a) a part which is entirely or to some extent composed of a molding composition which comprises at least 40% by weight of a polyamide whose monomer units contain an average of at least 8 carbon atoms, and also b) a part composed...

ABSTRACT Spherical particles comprising magnesium alcoholate and having a poured cone height of less than 17 mm are prepared by reacting magnesium, an alcohol or a mixture of various alcohols and a halogen and/or an optionally organic halogen compound with one another at below the boiling point of the alcohols. The...

Aggregated, crystalline silicon powder with a BET surface of more than 50 m2/g. The powder is produced by continuously feeding at least one vaporous or gaseous silane and optionally at least one vaporous or gaseous doping substance and an inert gas into a reactor and mixing the components there, wherein the proporti...

The present invention relates to highly disperse precipitated silicas which exhibit an extremely high level of reinforcement of rubber vulcanizates, to a process for their preparation, and to their use as filler for rubber mixtures.

Carbon material having organic groups, obtainable by the reaction of carbon material with organic compounds of the general formula 1 The invention"s carbon materials having organic groups are useful in dispersions, rubber, plastics, inks, including solventborne inks, waterborne inks, inkjet inks, xerographic ton...

The present invention relates to a powder, to a layer-by-layer process in which regions of the respective pulverulent layer are selectively melted and, after cooling, are fixed, and also to moldings produced from this powder. The RP or RM process produces a body in the shape of a block which is composed firstly of ...

A multilayer composite comprising the following layers: 5 I. an inner layer I selected from among a fluoropolymer molding composition and a polyolefin molding composition; II. a bonding layer II which has the following composition: 10 a) from 2 to 80 parts by weight of a polyaminepolyamide graft copolymer, b) fro...

Use of cyclic oliqomers in a shaping process, and moldings produced by this process The present invention relates to a three-dimensional powder-based production process using powder which consists in essence of cyclic oligomers, and also to moldings produced by this process. The shaping processes are layer-by-laye...

The present invention relates to precipitated silicas which have a particularly broad pore size distribution of the pores with a pore diameter smaller than that of the maximum of the derivative of the pore volume distribution function, to a process for their production and to their use.

An aqueous dispersion for use as a finishing agent for textiles, wherein the dispersion contains a pyrogenically produced, aggregated silicon dioxide powder and a cationic polymer which is soluble in the dispersion, wherein the cationic polymer is present in a quantity such that the particles of the silicon dioxide ...

The invention relates to silicas having an inhomogeneous structure or composition, to processes for preparing them, and to their use as carrier material for vitamins or choline chfloride.

A molding composition which comprises the following components: a) from 95 to 99.5 parts by weight of a thermoplastic aromatic polyester, b) from 5 to 0.5 parts by weight of a monocarboxylic acid, where the total of the parts by weight of a) and b) is 100; c) from 0.5 to 60% by weight, based on the molding compo...

Solvent-containing coating compositions The invention relates to solvent-containing coating compositions consisting of at least one hydroxyl-containing saturated copolyester, a phenol-formaldehyde resin, a benzoguanamine-formaldehyde resin and/or a blocked polyisocyanate, catalyst and solvent/aids and additives. ...

The present invention relates to a precipitated silica having a particularly high BET/CTAB ratio, to a process for preparing it, and to its use in elastomer blends.

An element of a line system of a fuel cell, wherein the part which is in contact with the medium being conveyed comprises a polyamide molding composition and, in addition, at least one further layer selected from among a) a layer II of a further polyamide molding composition b) a layer III of a molding compositi...

The present invention relates to a powder comprising PAEK, to the use of this powder in processes whose operation is based on pulverulent materials and in which the desired structures are produced layer-by-layer via selective melting and hardening, and also to moldings produced from this powder by this process. The ...

A method for the manufacture of furnace carbon black, in a carbon black reactor which contains, along the reactor axis, a combustion zone, a reaction zone and a termination zone, comprising: generating a hot waste gas stream in the combustion zone by the combustion of a primary carbon black raw material in an oxyge...

The precipitated silica has the following physico-chemical parameters: BET surface area (DIN 66131) in m2/g 400 - 600 DBP index (DIN 53601) in g/100 g 300 - 360 Compacted density (DIN 53194) in g/1 70 - 140 Grindometer value (ISO 1524) in µm 15 - 50 Size distribution index I < 1.0 measured with a Malvern intru...

A process for preparing oligomeric organosilanepolysulfanes containing the structural units A and /or B and ?or C linked in any linear branched or cyclic arrangement

This invention relates to a process for the preparation of the sulfur-functional poly-organosiloxanes corresponding to the general formula I wherein R1 , R2 , R3 , R4 , independently of one another, denote H,(C1-C4) alkyl, (C1-C4)alkoxy, (C1-C4)haloalkoxy, (C1-C4) haloalkyl, phenyl, aryl or aralkyl and W de...

Precipitated silica or silicates, obtainable by acid precipitation os aqueous silicate solutions while maintaining a constant alkali number of at least 1. use as carrier material, for choline chloride for example.

The invention relates to silicas having an inhomogeneous structure or composition, to processes for preparing them, and to their use in dental care compositions.

A molded part made from a molding compound, which contains a) 35 to 100% by weight of 'a thermoplastic polyester, b) 0 to 60% by weight of a filler or reinforcing material,c c) 0 to 20% by weight of an impact modified rubber, d) 0 to 30% by weight of a flame retardant, e) 0 to 20% by weight of a synergist and...

The invention relates to a method for impregnating a support matrix with solid and/or liquid compounds using a compressed gas or a compressed mixture of gases at densities ranging from 0,15 to 1,3 kg/1 and at least two unsymmetrical lpressure changes (pulsations). The method is further charcterized in that both a...

Aqueous, colloidal gas black suspension 5 Aqueous, colloidal gas black suspension containing (a) a gas black, (b) an azo compound of the general formula 1 15 (C) and water. The aqueous, colloidal gas black suspension is produced by dispersing the gas black and the azo compound of the general formula 1 in w...

A structurally coated silica can be prepared by spraying and mixing a pyrogenic silica with water and a coating asen: in a suitable rnixina vessel, then milling: and then conditioning the product. The structurally coated silica can be used as a matting agent in lacquers.

A surface-modified, aerogel-type, structured silica is produced by spraying an aerogel-type, structured silica with a silanizing agent, post-mixing and conditioning. It can be used as a flatting agent.

ABSTRACT Texture-coated silica can be prepared by spraying a fumod silica with water and a coating agent, for example a thermoplastic elastomer,/wnnc mixing in a suitable mixing vessel, then milling and subsequently drvitfe tne mixture. The texture-coated silica can be used as a delusterme aeent in/acquers and for ...

Method and device for producing dispersions A method and device for producing a finely divided dispersion of solids having a mean particle size of 10 µm to 10 µm, in which at least two flows of a predispersion are sprayed by means of pumps, preferably high-pressure pumps, through one nozzle each into a grinding cha...

Multilayer composites are obtained with good quality, in particular with good layer thickness distributions and good wall thickness distributions, when using a molding composition which comprises the following components: a) 100 parts by weight of polyamide and b) from 0.005 to 10 parts by weight of a compound h...

The invention relates to organosilicon compounds of the general formula Q- [S-G-Si (-O-CX1-CXbc3-) 3N] . The organosilicon compounds are prepared by reacting at least one organosilicon compound of the general formula X10S-G-Si (-O-CX-CX3-) 3N and an organic or inorganic acid anhydride, an organic or inorganic acid...

The present invention relates to precipitated silicas which have a particularly broad pore size distribution of the pores with a pore diameter smaller than that of the maximum of the derivative of the pore volume distribution function, with simultaneously very low microporosity and high rubber activity, to a process...

The present invention relates to a method for removal of dissolved oxygen from organic liquids by use of a solid state catalyst. In doing so the dissolved oxygen is converted by the action of a reducing agent to water.

In the preparation of organic or aqueous-organic hydrogen peroxide solutions by direct synthesis from a non-explosive gaseous mixture containing hydrogen and oxygen, in the presence of a noble metal catalyst, using a reaction medium containing a halide and a strong acid, the reaction can be carried out in a stainles...

The present invention concerns novel bidentante optionally N-containing P-ligands of general Formula (1) embracing a two-ring-system and processes for synthesizing them, transition metal complexes of these compounds and their use as catalysts.

The present invention relates to a process for the preparation of optically active alcohols from ketones with the aid of whole-cell catalysts comprising an alcohol dehydrogenase and also an enzyme capable of cofactor regeneration, a substrate concentration of at least 500 mM of ketone being provided for the conversi...

The invention relates to a method for producing 2-hydroxy-4-methylthiobutyric acid, in which special alloy steel and/or nickel alloys are used in the various method steps.

The present invention is directed at a process for preparing enantiomerically enriched compounds of the general formula (I). Compounds of the type shown are employed in catalyst systems.

The invention relates to a catalyst containing alkali tungstate for the synthesis of alkylmercaptanes from alkanols and hydrogen sulphide, in addition to a method for the production of said catalyst, wherein the molar ratio of alkali to tungsten is <2:1.

The invention relates to an interlining comprising double dots for the coating and/or laminating of surface structures. Said interlining is characterised in that the top dot and base dot are based on an amine-terminated, cross-linkable copolyamide and that the base dot in addition contains a cross-linking agent and ...

A carbon black with a STSA surface of between 20 and 180 m2/g, a 24M4-OBP absorption of between 40 and 140 ml/100 g and a specific BET surfaceof between 20 and 250 m2/g and a content of 0.01 to 20 wt.% of silicon,referred to its overall weight, wherein in rubber mixtures it has a tanδ0/tanδ...

The invention relates to a process for producing cyanuric chloride by trimerisation of cyanogen chloride at a temperature of at least 250 °C on a washed activated carbon as catalyst. The service life of the catalyst can be increased by using an activated carbon having an effective pore volume Veff of equal t...

The present invention concerns a method for the production of a titanium-containing zeolite whereby a synthesis gel is formed by combining andhydrolysing a hydrolysable silicon compound, a hydrolysable titanium compoundand a basic quaternary ammonium compound in an aqueous medium, inq...

A process for producing shaped articles of inorganic cyanides, in particular alkali metal cyanides and alkaline earth metal cyanides, comprising shaping of particle – form inorganic cyanide, obtained by a crystallization process, by means of a device for shaping the particle – form cyanide by press moulding,...

Organosilicon compounds of the general formula I and/or IIare produced by reacting silanes of the general formula IIIwith alcohols of the general formula R'-OH, withelimination of R-OH, and R-OH is continuously separated from the reaction mixture by distillation.The organosilicon comp...

A process for carrying out reactions between at least two fluid reactants (R1,R2) using a reactor in which there are located wall elements (1), slot-shaped reaction spaces (3) and cavities (9) for conducting a fluid heat—carrier through,characterized in that a) the slot-shaped reaction spaces (3) ar...

Silane-modified oxidic or siliceous filler with a beadfraction below 75 mm of less than 15 wt.% and a medianparticle size distribution between 150 and 500 mm, whichis produced by the reaction of at least one microbeaded ormicrogranular, oxidic or siliceous filler in a compressed...

The present invention relates to a process for preparing enantiomer-enriched ß-amino acids by enzymatic ester resolution of N-unprotected ß -amino acid esters in a two- phase system composed of water and an organic solvent forming two phases with water under the given reaction conditions. ...

Process for the preparation of enantionmerically enriched N-unprotected -aminoacids by enzymatic hydrolysis of an enantiomeric mixture of N-unprotected -amino acid esters with a hydrolase selected from the group amidase, protease,esterase and lipase with the proviso that no corresponding ...

A process for the catalytic epoxidation of olefins withhydrogen peroxide in a continuous flow reaction system, whereinthe reaction mixture is passed through a fixed catalyst bed indown-flow operation mode wherein a fixed bed reactor comprisingcooling means is used and the reaction hea...

A process for the catalytic epoxidation of olefins with hydrogen peroxide in acontinuous flow reaction system, wherein the reaction mixture is passed througha fixed catalyst bed within a reactor equipped with cooling means whilemaintaining a temperature profile within the reactor such that ...

A PROCESS FOR THE CATALYTIC EPOSIDTION OF OLEFINS WITH HYDROGEN PEROXIDE IN A CONTINUOUS FLOW REACTION SYSTEM, WHEREIN THE RE4ACTION MIXTURE IS PASSED THROUGH A FIXED CATALYST BED WITHIN A REACTOR EQUIPPED WITH COOLING MEANS WHILE MAINTAINING A TEMPERATURE PROFILE WITHIN THE REACTOR SUCH THAT THE COOLING MED...

The invention described herein relates to a process for the catalyticepoxidation of olefins with hydrogen peroxide in a multiphase reactionmixture comprising an liquid aqueous hydrogen peroxide rich phasecontaining an organic solvent having a solubility in water of at least10 % by wei...

Organosilane masterbatch comprising 2-20 parts by weight of rubber such as herein described, 0-60 parts by weight of filler, 5-55 parts by weigh oforganosilane such as herein described and 0-10 parts by weight of dispersingagent.

Apparatus for filling containers, said apparatus comprising a feed nozzlewhich may be introduced into the feed orifice of the container, the apparatusfurther comprising a two-part or multi-part cage suitable for surrounding acontainer, the feed nozzle being so designed that the solids may b...

Granules based on pyrogenically prepared silicon dioxide with the following physico-chemical characteristic data: Average particle diameter: 10 to 120 μm BET surface area: 40 to 400 m2/gPore volume: 0.5 to 2.5 ml/gPore distribution: content of pores of porediameter < 5 nm in the total pore ...

Organosilicon compounds of the general formula Iin which R are identical or different and denote an R'O group or C1-C12-alkyl group,R' are identical or different and denote a C12-C24 branched or unbranched single-bond alkyl or alkenyl group, aryl group, aralkyl group or R'"3Si, where ...

Process for the preparation of (mercaptoorganyl)- alkoxysilanes wherein alkalimetal sulfide is reacted with a mixture of (haloorganyl) alkoxysilane and(haloorganyl) halosilane in an alcohol with the exclusion of air, at temperaturesof from 0 to 180°C and under elevated pressure of 0.1 to 10...

A process for preparing (mercaptoorganyl) alkoxysilanes, characterized inthat alkali-metal hydrogensulfide is converted with a mixture of(haloorganyl) alkoxysilane and (haloorganyl) halosilane in an alcohol in aclosed vessel with air excluded and at an elevated pressure between 0.1 bar

The present invention relates to ligands of the generalformula (I) .In addition, a process for the production thereof and theuse thereof are demonstrated.

Carbon black granules, characterised in that they contain a sorbitan triester.

N/A

The invention relates to a pyrogenically produced silicon dioxide powder in theform of aggregates of primary particles having a BET surface area of 300 ± 25m2/g, the aggregates display an average surface area of 4800 to 6000 nm2, anaverage equivalent circle diameter (ECD) of 60 to 80 nm and...

The present invention relates to a process for the purification of acrude propene oxide containing methanol and acetaldehyde by acontinuously operated extractive distillation using an extractionsolvent lowering the volatility of methanol and feeding a compoundcontaining an unsubstitut...

Process for the catalytic epoxidation of olefins, wherein one or more nitrogen containing compounds are introduced at some stage of the process, by (i) reacting an olefin with hydrogen peroxide in the presence of a titanium containing zeolite catalyst such as a titanium silicalite, and a polar solvent, (i...

N/A

In the continuous hydrogenation of a working solution containing a hydrogenable compound with hydrogen in the presence of a heterogeneous catalyst, at least part of the hydrogen-containing waste hydrogenation gas is recycledinto the hydrogenation reactor after compression.According to the inventi...

Aqueous, colloidal gas black suspension, characterized in that it containsa gas black,an azo compound of the general formula 1wherein R1 to R12 may be the same or different and consist of hydrogen, hydrophilic or hydrophobic groups, acceptor or donor substituents or parts of aliphatic, arom...

The invention concerns coated sodium percarbonate granules comprising a core produced by fluidised bed spray granulation, containing sodium percarbonate as its main component, an inner coating layer containing an organic, hydrate-forming salt as its main component, and an outercoating layer containing ...

A process, for producing an alcohol comprising: (a) enzymatically reducinga carbonyl compound in a reaction mixture comprising: (i) said carbonylcompound, wherein the carbonyl compound comprises a phenyl aldehyde oran unsymmetric phenyl ketone; (ii) a first dehydrogenase enzyme, wherein

The present invention relates to novel nitrogen-containingmonodentate phosphane ligands of formula (I)and to their use in catalytic reactions, especially in theimprovement of haloaromatic compounds.

Pyrogenically prepared surface modified aluminum oxide, having the following physical chemical properties: surface area [m2/g]: 50 to 150, tamped density [g/L]: 25 to 130, drying loss [%]:less than 5, loss on ignition [%]: 0.1 to 15,Ccontent [%]:0.1 to 15, pH value:3 to 9; is prepared by treating pyrog...

Process for removing halide compounds adhering to finely divided metal oxide particlesby means of steam, whereto the metal oxide particles are applied to the upper part ofan upright column and migrate downwards by means of gravity, the steam is applied atthe bottom end of the column, the me...

The invention relates to a process for removing halidecompounds adhering to finely divided metal oxide particles bymeans of steam wherein the metal oxide particles are applied tothe upper part of an upright column and migrate downwards bymeans of gravity, the steam is applied at the b...

The invention relates to a method for producing carbon black or other flame aerosols, comprising the following steps; the heat is removed from the flame by dissipation and/or radiation; a thin gas boundary layer is formed; the flow formed by the flame and the gas boundary layer is accelerated or expanded; th...

The invention provides mercaptosilanes of the generalformula I wherein R1 is an alkyl polyether group -O-(R5-O)m-R6.They are prepared by a procedure in which a silane of thegeneral formula II is subjected to a catalysed reaction with an alkylpolyether R1-H, R7-...

The present invention focuses on a process for thehydrogenation of aromatic or heteroaromatic compounds and in particular on the ring hydrogenation of compounds having the formula (I). Aromatic amino acids and amino alcohols can besuccessfully ring-hydrogenated using a platinum-rhodiu...

A whole-cell catalyst exhibiting a cloned gene for an oxynitrilase and a nitrilase or a nitrile hydratase.

Surface-modified zinc oxides with a BET surface area of 18 ± 5 m2/g and a C content of0.1 to 5.0 wt,% are prepared by spraying the zinc oxides with the surface-modifyingagent or adding this in vapour form and then heat-treating the mixtures. They can beemployed for the preparation of cosmet...

Process for the production of hydrogen cyanide by the BMA process, wherein an aliphatic hydrocarbon with 1 to 4 carbon atoms is reacted with ammonia in the presence of a platinum-containing catalyst at 1000 to 1350°C and hydrogen cyanide is separated out of the reaction gas formed, characterized in that the ...

Recombinant microorganism for the preparation of D-aminoacids starting from N-carbamoylamino acids or 5-monosubstitutedhydantoins in which the gene which codes for a D-amino acidoxidase and/or the gene which codes for a D-serine dehydratase isinactivated by mutagenesis and has a clone...

Aqueous, colloidal gas black suspension, characterized in that it comprises at least one gas black, between 0.1 and 1% by weight of an azo compound of formula 1, wherein R1 to R18, which may be identical or different, consist of hydrogen, hydrophilic or hydrophobic groups, acceptor or donor subst...

A fabric softener composition comprising a blend of from 15 to 65%by weight of the total blend, of a triethamol amine ester quat and from35 to 85% by weight of the total blend, of a methyl diethanol amineester quat, said methyl diethanol amine ester quat having a mono alkylester quat ...

Process for the epoxidation of olefins byi) reacting an olefin with hydrogen peroxide in the presence of atitanium silicate catalyst and an alcoholic solvent, wherebyhydrogen peroxide is employed as an aqueous solutioncontaining 10 to 70 wt.-% of hydrogen peroxide or as analcoho...

Precipitated silica, characterized by the following physico-chemical parameters:BET surface area 120 - 300 m2/gCTAB surface area 100 - 300 m2/gBET/CTAB ratio 0.8 - 1.3Sears index (consumption of 0.1 N NaOH) 6 - 25 mlDBP index 150 - 300 g/100 gwk coefficient < 3.4Par...

Five-membered or six-membered cyclic ethers, in particular anhydropolyols, can be obtained by cyclodehydration of polyols having at least 4 C atoms and at least 2 hydroxyl groups in the presence of water and an acidic catalyst. According to the invention the cyclodehydration is promoted and the formation of ...

The invention relates to a method for recovering sulfuric acid from sulfurous by-products which arise in processes for preparing 2-hydroxy-4-methylthiobutyric acid (MHA) , wherein the sulfuric acid accumulates in a grade in which it can be directly re-employed in such processes For this purpose the combustio...

The invention provides a process for the preparation of a polyamide powder for cosmetic applications which comprises incorporation of an buffer system of natural organic and/or mineral acids and their corresponding salts to set the pH of the polyamide powder between 4.5 and 6.5

The present invention refers to an aqueous hydrogen peroxide solution comprising: i) less than 50 wppm alkali metals, alkaline earth metals or combinations thereof in total, irrespective whether the alkali or alkaline earth metals are present in cationic or complex form; ii) less than 50 wppm of amines havi...

Isolated nucleic acid coding for a polypeptide havingacetohydroKy acid synthetase (AHAS) activity comprising sequencesselected from the group consisting of: a) the nucleic acidsequence according to SEQ.ID NO: 1 or SEQ.ID NQ: 3; b) a nucleicacid sequence comprising in pOsition 21 and 2...