| Patent Number |
Title Of Patent |
Date Issued |
| 7465431 |
Nanoscalar pyrogenically produced yttrium-zirconium mixed oxide |
December 16, 2008 |
| Nanoscalar, pyrogenically produced yttrium-zirconium mixed oxide which has a BET surface area of between 1 and 600 m.sup.2/g, a total chloride content of less than 0.05 wt. % and does not exhibit a conversion into the monoclinic phase during storage is produced by atomizing yttrium c |
| 7132157 |
Layer obtained from an aqueous dispersion containing a silicon/titanium mixed oxide powder prepa |
November 7, 2006 |
| A layer which is obtained by thermal treatment from an aqueous dispersion applied to a substrate, the dispersion containing silicon/titanium mixed oxide powder prepared by flame hydrolysis. It is prepared by applying a dispersion which contains the silicon/titanium mixed oxide powder to |
| 6890873 |
Glass prepared from pyrogenically prepared silicon dioxide |
May 10, 2005 |
| Pyrogenically prepared silicon dioxide with the following physicochemical properties: 1. Average particle size (D.sub.50 value) D.sub.50.gtoreq.150 nm (dynamic light scattering, 30 wt %) 2. Viscosity (5 rpm, 30 wt %) .eta..ltoreq.100 m.multidot.Pas 3. Thixotropy of T.sub.i (.eta.(5 |
| 6849114 |
Dispersion comprising silicon/titanium mixed oxide powder, and green bodies and shaped glass art |
February 1, 2005 |
| Aqueous dispersion comprising silicon/titanium mixed oxide powder with a BET surface area of 5 to 500 m.sup.2 /g which has been prepared by flame hydrolysis and has a titanium dioxide content of 0.5 to 20 wt. %, based on the powder, water and at least one pH-regulating substance which ca |
| 6796143 |
Process for producing SiO2-TiO2 glasses having a low coefficient of thermal expansion |
September 28, 2004 |
| SiO.sub.2 --TiO.sub.2 glasses having a low coefficient of thermal expansion are produced by a molding being produced that consists of SiO.sub.2 powder, SiO.sub.2 --TiO.sub.2 powder or TiO.sub.2 powder and that contains by way of secondary component a titanium-containing component which i |
| 6679945 |
Pyrogenically prepared silicon dioxide |
January 20, 2004 |
| Pyrogenically prepared silicon dioxide with the following physicochemical properties: 1. Average particle size (D.sub.50 value)D.sub.50.gtoreq.150 nm (dynamic light scattering, 30 wt %) 2. Viscosity (5 rpm, 30 wt %) .eta..ltoreq.100 m.multidot.Pas 3. Thixotropy of T.sub.i (.eta.(5 r |
| 6663851 |
Surface-modified titanium dioxide |
December 16, 2003 |
| A product obtained by treating surface-modified, pyrogenically produced titanium dioxide with at least one ammonium-functional silane, such as by spraying the pyrogenically produced titanium dioxide with the at least one silane, alone or in ethanol solution, and tempering, and useful in |
| 6455455 |
Silicon-aluminum mixed oxide |
September 24, 2002 |
| A silicon-aluminum mixed oxide produced by flame hydrolysis and having a composition of from 1 to 99.999 wt. % Al.sub.2 O.sub.3, the remainder being SiO.sub.2, which mixed oxide exhibits an amorphous structure in the X-ray diffraction pattern and consists of intergrown primary particles, |
| 6319974 |
Method for improving the stability of polymers |
November 20, 2001 |
| The stability of polymers against the action of heat and flames is improved in that a pyrogenically produced titanium dioxide containing iron oxide is added to the polymers. |
| 5858906 |
Compacts based on pyrogenically produced oxides |
January 12, 1999 |
| Compacts produced from a pyrogenically produced oxide, magnesium stearate, methyl cellulose and urea are mixed together in the presence of water, compacted, dried, comminuted to a powder, and the powder is pressed with an isostatic press to compacts and the compacts tempered. The resulti |
| 5776240 |
Granules based on pyrogenically prepared silicon dioxide, methods for their preparation and use |
July 7, 1998 |
| Granules based on silicon dioxide and having the properties:Average particle size: 10 to 120 .mu.mBET surface area: 40 to 400 m.sup.2 /gPore volume: 0.5 to 2.5 ml/gPore size distribution: less than 5% of the total pore volume exists of pores with a diameter<5 nm, remainder are meso- and macro |
| 5536694 |
Catalyst precursor for an activated raney metal fixed-bed catalyst, an activated raney metal fix |
July 16, 1996 |
| Shaped, activated Raney metal fixed-bed catalysts are obtained by molding a powder of at least one catalyst alloy, comprising at least one Raney process metal as catalytically active component and a leachable alloy component, and a powder of pure Raney process metal as binder with the |
| 5512529 |
Catalyst for the selective hydrogenation of aromatic halonitro compounds to aromatic haloamines |
April 30, 1996 |
| A modified supported noble metal catalyst is disclosed for the selective hydrogenation of aromatic halonitro compounds to form aromatic haloamines. The support consists of active carbon. The active component is platinum modified with copper. The new catalyst is distinguished by good |
| 5498590 |
Process for uniform and reproducible shell impregnation of fixed bed catalyst supports in the fo |
March 12, 1996 |
| A process for uniform and reproducible impregnation of fixed bed catalyst supports in the form of loose particles with a desired shell volume, by applying atomized impregnating solutions of precursors of the catalytically active components onto the heap of catalyst supports circulate |
| 5498585 |
Sulphidized catalyst which contains platinum on activated carbon |
March 12, 1996 |
| A sulphidized catalyst which contains platinum on activated carbon is described. The activity of the catalyst can be greatly improved, while retaining the same selectivity, when the platinum-containing impregnation solution contains an oxidizing agent. |
| 5466421 |
Apparatus for the catalytic conversion of waste gases containing hydrocarbon, halogenated hydroc |
November 14, 1995 |
| Apparatus for carrying out a method for the catalytic conversion of waste gases such as those which accumulate in the synthesis of vinyl chloride is presented in which the waste gases are successively treated at an elevated temperature with a catalyst for oxidative cracking and with a ca |
| 5466421 |
Apparatus for the catalytic conversion of waste gases containing hydrocarbon, halogenated hydroc |
November 14, 1995 |
| Apparatus for carrying out a method for the catalytic conversion of waste gases such as those which accumulate in the synthesis of vinyl chloride is presented in which the waste gases are successively treated at an elevated temperature with a catalyst for oxidative cracking and with a ca |
| 5449655 |
Process for preparing hydrogenation catalysts which contain noble metals on activated carbon |
September 12, 1995 |
| A process is described for preparing hydrogenation catalysts which contain noble metals, having at least one catalytically active component and optionally promoters and/or modifiers on a support consisting of activated carbon washed with nitric acid. The activated carbon is subjected to |
| 5395965 |
Catalyst for the production of a glyoxylic acid by catalytic oxidation of glyoxal and method of |
March 7, 1995 |
| A catalyst containing platinum on carbon as carrier for the catalytic oxidation of glyoxal to glyoxalic acid. Activity and selectivity of the catalyst can be considerably improved by modification with molybdenum and/or cerium. |
| 5366938 |
Shaped articles based on pyrogenically produced titanium dioxide |
November 22, 1994 |
| Pressed parts based on pyrogenically produced titanium dioxide with the following physico-chemical characteristics:They are produced by mixing pyrogenically produced titanium dioxide with urea, graphite and water, compacting the mixture, optionally drying the resulting mass at 80.degree. |
| 5237019 |
Metal-containing, shaped polymeric, tertiary and/or secondary organosiloxane amine compounds, me |
August 17, 1993 |
| Metal-containing, shaped, polymeric, tertiary and/or secondary organosiloxane amine compounds are introduced which contain the metals Pd, Pt, Ru, Rh individually or in combination as well as optional promotors and/or moderators. The organosiloxane amine functioning as carrier for the |
| 5231067 |
Shaped articles based on pyrogenically produced titanium dioxide, method of their production and |
July 27, 1993 |
| Pressed parts based on pyrogenically produced titanium dioxide with the following physico-chemical characteristics:They are produced by mixing pyrogenically produced titanium dioxide with urea, graphite and water, compacting the mixture, optionally drying the resulting mass at 80.degree. |
| 5166120 |
Cylindrically formed catalyst for the oxychlorination of ethylene |
November 24, 1992 |
| A carrier catalyst containing copper and alkali ions on an annular carrier of surface-active material is defined by the dimensions of the carrier body and the porosity of the finished catalyst. Its total pore volume is 0.6-1.0 ml/g, pores smaller than 4 nm diameter are not present, pores |
| 5132452 |
Method for preparation of gluconic acid by catalytic oxidation of glucose |
July 21, 1992 |
| A process for making gluconic acid and its alkali metal salts by oxidizing glucose with oxygen or oxygen containing gas in an aqueous alkaline solution in the presence of an activated charcoal supported catalyst containing a platinum group metal component, e.g. platinum and palladium |
| 5108717 |
Apparatus for the catalytic conversion of waste gases |
April 28, 1992 |
| Apparatus for the catalytic conversion of waste gases such as those which accumulate in the synthesis of vinyl chloride is presented in which the waste gases are successively treated at an elevated temperature with a catalyst for oxidative cracking and with a catalyst for oxidative a |
| 5099085 |
Chlorination reactions and oxychlorination reactions in the presence of honeycomb monolithic cat |
March 24, 1992 |
| The use of hitherto known supported catalysts in chlorination processes and oxychlorination processes leads to high pressure drops and to the formation of hot spot temperatures in the reactor. When honeycomb monolithic catalyst supports provided with a multiplicity of channels open a |
| 5086031 |
Pressed parts based on pyrogenically produced silicon dioxide, method of their production and th |
February 4, 1992 |
| Pressed parts based on pyrogenically produced silicon dioxide with the following physicochemical characteristic data:are produced by homogenizing pyrogenically produced silicon dioxide with urea, methyl cellulose and/or magnesium stearate, graphite and aluminum stearate with the addition |
| 5021378 |
Molded articles based on pyrogenically prepared silicon dioxide, process for their production an |
June 4, 1991 |
| Molded articles based on pyrogenically prepared silicon dioxide and having the following physical-chemical characteristic data:These products are produced by compacting pyrogenically prepared silicon dioxide with kaolin and/or graphite, sugar, starch, urea or wax with addition of water, |
| 5015615 |
Molded articles based on pyrogenically prepared aluminum oxide and process for their production |
May 14, 1991 |
| Molded articles based on pyrogenically prepared aluminum oxide and having the following physical-chemical characteristic data:They are produced by homogenizing pyrogenically prepared aluminum oxide with kaolin and/or graphite, urea, wax, sugar or starch with addition of water, drying the |
| 5004719 |
Molded articles based on pyrogenically produced zirconium dioxide method for their manufacture, |
April 2, 1991 |
| Molded, or pressed articles on pyrogenically produced zirconium dioxide are disclosed and having the following features:These molded articles are manufactured by homogenizing pyrogenically produced zirconium dioxide with any one of kaolin, sugar, or urea, or mixtures while water is being |
| 5002918 |
Molded articles based on pyrogenically produced mixed-oxide systems of silicon dioxide and alumi |
March 26, 1991 |
| A molded; i.e. pressed, article based on a pyrogenically produced system of mixed oxides of silicon dioxide and aluminum oxide and having the following physical-chemical features:These molded articles are manufactured by homogenizing a pyrogenically produced system of mixed oxides of sil |
| 5002917 |
Molded articles based on pyrogenically produced titanium dioxide method for their manufacturing |
March 26, 1991 |
| The invention concerns pressed pellets based on pyrogenically produced titanium dioxide having the following properties:They are made by mixing pyrogenically produced titanium with a foaming agent such as urea and with water, where called binder such as kaolin and also with a binder such |
| 4983366 |
Method for the catalytic conversion of waste gases containing hydrocarbon, halogenated hydrocarb |
January 8, 1991 |
| A method for the catalytic conversion of waste gases such as those which accumulate in the synthesis of vinyl chloride is presented in which the waste gases are successively treated at an elevated temperature with a catalyst for oxidative cracking and with a catalyst for oxidative af |
| 4935218 |
Catalyst for the production of hydrocarbons and process for their production |
June 19, 1990 |
| A catalyst for the production of hydrocarbon consists essentially of crystalline aluminum silicate, at least one compound of the metal zinc and/or cadmium and additionally silica. The catalyst is produced by heating a crystalline aluminum silicate, in a given case partially or comple |
| 4861937 |
Catalysts for converting alcohols and/or aliphatic ether to unsaturated hydrocarbons and process |
August 29, 1989 |
| Alcohols and/or aliphatic ethers are converted to hydrocarbons employing catalysts consisting of crystalline aluminum silicate, a compound of zinc and/or cadmium and additional silica. The catalyst is produced by treating a crystalline aluminum silicate, in a given case, partially or com |
| 4751298 |
Production of 1-(3-hydroxy-propyl)-1,4-diazepane and 1,4-bis(3,4,5-trimethoxy-benzoyloxy)-propyl |
June 14, 1988 |
| There is disclosed a process for the production of 1,4-bis-[3-(3,4,5-trimethoxybenzyloxy)-propyl]-diazepane which consists of first reacting 3-aminopropanol with acrylonitrile and subsequently reacting in aqueous solution with formaldehyde and hydrocyanic acid or with formaldehyde an |
| 4486600 |
Process for the production of .beta.-hydroxy-.alpha.-aminocarboxylic acids |
December 4, 1984 |
| .beta.-hydroxy-.alpha.-aminocarboxylic acids of the formula: ##STR1## where R.sub.1 and R.sub.2 are hydrogen or an alkyl group having 1 to 10 carbon atoms are produced by hydrogenating the correspondingly substituted cyanohydrin in a water containing medium first in the presence of a |
| 4482760 |
Process for the production of 1,2-diols |
November 13, 1984 |
| 1,2-Diols of the formula: ##STR1## where R.sub.1 and R.sub.2 are hydrogen, alkyl of 1 to 10 carbon atoms or such as alkyl substituted by a halogen, a hydroxy group, a phenyl group, a methoxy group, or an ethoxy group, a phenyl group or a furyl group or R.sub.1 and R.sub.2 togethe |
| 4376215 |
Process for the production of 4-aminobutyramide hydrochloride |
March 8, 1983 |
| 4-aminobutyramide hydrochloride is produced by saponifying 4-(benzylamino)-or-4-(dibenzylamino)-butyronitrile to the corresponding substituted 4-aminobutyramide and subjecting this in the form of the hydrochloride in the presence of an inert solvent and a platinum metal catalyst to a |
