| Patent Number |
Title Of Patent |
Date Issued |
| 7385075 |
Method for producing esters of multibasic acids |
June 10, 2008 |
| A process is described for preparing esters of an acid component selected from among polybasic C.sub.4-C.sub.10 carboxylic acids and an alcohol component selected from among C.sub.3-C.sub.12 alkanols or from among C.sub.3-C.sub.12 alkanediols, the alkyl chain of which may have interr |
| 7300966 |
Method for producing blends of phthalic acid diesters, decanols and tridecanols |
November 27, 2007 |
| A process is described for preparing mixtures of diesters of phthalic acid with decanols and tridecanols by reacting phthalic acid or a reactive derivative of phthalic acid with a mixture made from at least one decanol and at least one tridecanol.Mixtures obtainable in this way are also |
| 6696389 |
Process and apparatus for cleaning a gas flow |
February 24, 2004 |
| The invention relates to a method and a device for cleaning flowing gases. To reduce the total emissions, nitrogen oxides, especially NO and NOx, are extracted at least partially from the gas to be scrubbed, in the temperature range from 50 and 300.degree. C., preferably between 50 and |
| 6624285 |
Polyesters blocked with isomeric nonanols, method for producing them and use thereof as softener |
September 23, 2003 |
| Polyesters suitable as plasticizers and obtainable by reacting aliphatic dicarboxylic acids, neopentyl glycol, at least one other diol and a nonanol mixture, where the nonanol mixture is mainly composed of 1-nonanol, of monomethyloctanols, of dimethylheptanols and of monoethylheptano |
| 6444178 |
Purification device for gases |
September 3, 2002 |
| An exhaust gas purification device includes a porous body of catalytic material of the general formula A.sub.a B.sub.b O.sub.4 disposed in an exhaust gas stream of an engine. The porous body of catalytic material has a characteristic response temperature above which it is catalytically |
| 6437170 |
Mixture of diesters of adipic or phthalic acid with isomers of nonanols |
August 20, 2002 |
| The mixture described is a mixture of isomeric nonanol diesters of a dicarboxylic acid, selected from the class consisting of a mixture of diesters of adipic acid in the .sup.1 H NMR spectrum of which, observed in CDCl.sub.3, the ratio of the area under the resonance signals at chemical |
| 6395244 |
Storage catalyst |
May 28, 2002 |
| A storage catalyst includes (1) a component that has a catalytic reducing action for nitrogen oxides at least in the presence of hydrocarbons, and (2) a component that stores NOx at least at temperatures of below 100.degree. C. The catalytically active component is of the general che |
| 6200535 |
Purification device having a porous body for purifying pollutants from an exhaust gas stream |
March 13, 2001 |
| The present invention is directed to a purification device that includes a porous body and a catalyst. To reduce the emission of pollutants, a pollutant-containing stream of gas flows through the porous body. |
| 6153162 |
Method for the reduction of nitrogen oxides |
November 28, 2000 |
| A process for the catalytic reduction of NO.sub.x, the reduction taking place in the presence of a catalyst which comprises(a) from 20 to 97 wt % of A.sub.2 O.sub.3,(b) from 1 to 40 wt % of CuO,(c) from 1 to 50 wt % of ZnO,(d) from 1 to 40 wt % of Ag,(e) from 0 to 2 wt % of Pt,(f) from 0 to 20 w |
| 6153161 |
Process for reducing NO.sub.x from exhaust fumes |
November 28, 2000 |
| NO.sub.x, where x is 1 and 2, in exhaust gases is reduced over heterogeneous catalysts with hydrocarbons, carbon monoxide, hydrogen or mixtures thereof in the presence of oxygen from 100 to 650.degree. C. and an absolute pressure of from 0.5 to 50 bar by a process in which the hetero |
| 6030589 |
Catalyst, method for its production and use of same |
February 29, 2000 |
| A method of catalytically reducing nitrogen oxides (NO.sub.x) and oxidizing hydrocarbons or carbon monoxide in exhaust gases of internal combustion engines or combustion power plants using a catalyst comprising a magnesium oxide/copper oxide/aluminum oxide spinel or a copper-impregnated |
| 6027703 |
Method for operating a purification device for gases as well as a purification device for gases |
February 22, 2000 |
| The present invention relates to a method for operating a catalyst for gases, especially for exhaust gases of stoichiometrically operated gasoline engines, wherein a catalyst is exposed to a gas stream and pollutants are catalytically converted. To improve the elimination of pollutan |
| 6004524 |
Lowering of the nitrogen oxide levels in exhaust gases by controlled addition of NH.sub.3 |
December 21, 1999 |
| A process for selective catalytic reduction of nitrogen oxides from exhaust gases, preferably those from diesel engines in vehicles, using pulsed superstoichiometric addition of NH.sub.3 or NH.sub.3 -releasing substances, comprises controlling the pulsed superstoichiometric addition |
| 6004520 |
Method for operating a purification device, a purification device and use of the same |
December 21, 1999 |
| The present invention relates to a method for operating a purification device, to a purification device and to the use of same. To reduce the emission of pollutants, a filter body through which a fluid can flow and comprising a catalyst, is exposed to a stream of gas which is to be p |
| 5965099 |
Catalyst and a method for its production and use of same |
October 12, 1999 |
| A catalyst and a method for producing the catalyst, for catalytic reduction of NO.sub.x and oxidation of hydrocarbons, the catalyst comprises a zinc, copper and aluminum spinel to which, at least one element selected from palladium, platinum, rhodium, ruthenium, osmium, iridium, rhenium |
| 5965098 |
Methods and devices for scrubbing gases |
October 12, 1999 |
| The invention relates to a method and a device for cleaning flowing gases. To reduce the total emissions, nitrogen oxides, especially NO and NOx, are extracted at least partially from the gas to be scrubbed, in the temperature range from 50 and 300.degree. C., preferably between 50 and |
| 5945080 |
Catalyst and process for its production |
August 31, 1999 |
| A catalyst and a process for producing the catalyst are provided. For the catalytic reduction of NO.sub.x and for the oxidation of hydrocarbons, the catalyst contains a spinel containing the metals copper, zinc and aluminum. |
| 5905056 |
Catalyst and a method for its production and use of same |
May 18, 1999 |
| A catalyst and a method for producing the catalyst, for catalytic reduction of NO.sub.x and oxidation of hydrocarbons, the catalyst comprises a zinc, copper and aluminum spinel to which, at least one element selected from palladium, platinum, rhodium, ruthenium, osmium, iridium, rhenium |
| 5750460 |
Catalyst and process for its production |
May 12, 1998 |
| A catalyst and a process for producing the catalyst are provided. For the catalytic reduction of NO.sub.x and for the oxidation of hydrocarbons, the catalyst contains a spinel containing the metals copper, zinc and aluminum. |
| 5227356 |
Catalyst containing metal oxides for use in the degenerative oxidation of organic compounds pres |
July 13, 1993 |
| A metal oxide-containing catalyst which also contains, besides oxides of titanium and/or zirconium, oxides of vanadium and/or niobium and oxides of molybdenum, tungsten, and/or chromium, sulfates of alkaline earth metals, and which is used in a process for the degenerative oxidation of o |
