Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7507862 | Process for hydrogenating an aromatic amine in the presence of a supported ruthenium catalyst The invention relates to a process for hydrogenating an aromatic amine that has at least one amino group bound to an aromatic nucleus with hydrogen in the presence of a supported catalyst that contains at least ruthenium as active metal. The catalyst support has a B... | 03/24/2009 |
| 7465833 | Hydrogenation of aromatic amines to alicyclic amines using a lithium aluminate-based catalyst The present invention relates to processes for the catalytic hydrogenation of aromatic amines to their acyclic counterparts using a ruthenium catalyst on a lithium aluminate support. The hydrogenation process comprises contacting an aromatic amine with hydrogen in t... | 12/16/2008 |
| 7355084 | Method for hydrogenating organic compounds by means of Ru/SiOcatalysts In a process for hydrogenating at least one organic compound, the organic compound or compounds is/are brought into contact with a hydrogen-containing gas in the presence of a catalyst which comprises, as active metal, ruthenium either alone or together with at leas... | 04/08/2008 |
| 7335800 | Hydrogenation catalyst and hydrogenation method The present invention provides a hydrogenation catalyst effective for hydrogenating 3-hydroxypropionaldehyde to 1,3-propanediol. The hydrogenation catalyst comprises an α-alumina support, nickel, ruthenium, and a promoter. The nickel is deposited on the α-alumina ... | 02/26/2008 |
| 7175754 | Process for the production of low benzene gasoline A process for the production of low benzene content gasoline is disclosed wherein a full boiling range naphtha is fractionated to produce a light naphtha, a medium naphtha and a heavy naphtha. The benzene is contained in the medium naphtha and this stream is subject... | 02/13/2007 |
| 7067615 | Hydrotreating polyester precursors A process comprising contacting a liquid polyester stream with hydrogen in the presence of a hydrogenation catalyst comprising a metal supported on the surface of silicon carbide at a metal dispersion of at least 0.5% or graphite at a metal dispersion of at least 10... | 06/27/2006 |
| 7038088 | Hydrogenation of highly contaminated methylenedianiline This invention relates to a process for the catalytic hydrogenation of impurity laden methylenedianiline feedstocks commonly referred to a MDA-50 and MDA-60. The process for hydrogenating methylenedianiline containing at least 40% oligomer function by weight compris... | 05/02/2006 |
| 7030053 | Catalyst composition comprising ruthenium and a treated silica support component and processes therefor and therewith for preparing high molecular weight hydrocarbons such as polymethylene A catalyst composition and a process of using a catalyst composition for preparing high molecular weight hydrocarbons, such as polymethylene, from a fluid containing hydrogen and carbon monoxide are disclosed. The catalyst composition contains ruthenium and a treate... | 04/18/2006 |
| 6998366 | Thin layer catalysts based on Raney alloys, and method for the production thereof Raney alloy catalysts applied to a support are described, said catalysts having an extremely thin layer of Raney alloy with a thickness of 0.01 to 100 μm. These catalysts are prepared by vapor deposition of the appropriate metals under reduced pressure. They are ge... | 02/14/2006 |
| 6998507 | Hydrogenation of methylenedianiline The invention is directed to an improvement in a catalytic process for the ring hydrogenation of a methylenedianiline feedstock, including crude methylenedianiline. One component of the improvement is a pretreatment process which resides in passing the crude methyle... | 02/14/2006 |
| 6924385 | Method for synthesis of aliphatic isocyanates from aromatic isocyanates The invention relates to a method for synthesis of aliphatic isocyanates from aromatic isocyanates in substantially 3 stages. In particular, the invention relates to a method for synthesis of bis{4-isocyanatocyclohexyl}methane (H12MDI) from bis{4-isocyana... | 08/02/2005 |
| 6429338 | Hydrogenation of single ring aromatic diamines This invention relates to an improved process for the preparation of cyclohexylamines wherein an aromatic amine is contacted with hydrogen in the presence of a hydrogenation catalyst. The improvement resides in utilizing a hydrogenation catalyst comprised... | 08/06/2002 |
| 6335470 | Method for producing variable mixtures of cyclohexylamine and dicyclohexylamine Ru/Pd catalysts on supports are used for the preparation of mixtures of substituted or unsubstituted cyclohexylamine and substituted or unsubstituted dicyclohexylamine in variable amounts by catalytic hydrogenation of substituted or unsubstituted aniline ... | 01/01/2002 |
| 6255530 | Process for the preparation of six-membered ring carbocycles Six-membered ring carbocycles of the formula (II) can be prepared by ring hydrogenation of aromatic compounds of the formula (I) ##STR1## the definitions for which are given in the description, in a reaction system consisting of two liquid, immiscible pha... | 07/03/2001 |
| 6248924 | Process for reacting an organic compound in the presence of a supported ruthenium catalyst A process for the reaction of an organic compound in the presence of a catalyst comprising, as active metal, ruthenium alone or together with at least one Group Ib, VIIb, or VIIIb metal in an amount of from 0.01 to 30 wt %, based on the total weight of th... | 06/19/2001 |
| 6184416 | Lithium aluminate as a catalyst support for hydrogenation of aromatic amines This invention relates to an improvement in a process for the catalytic hydrogenation of aromatic amines and to the resultant catalyst. The basic process for hydrogenating both mononuclear and polynuclear aromatic amines comprises contacting an aromatic a... | 02/06/2001 |
| 6166234 | Tripodal cyclopentadiene derivatives and their use Novel tripodal cyclopentadiene derivatives have the formula (I) ##STR1## where E are identical or different and are --N(R)(R), --P(R)(R), --As(R)(R), --Sb(R)(R), --OR, --SR, --SeR, --TeR, where R are identical or different and are each hydrogen, a C | 12/26/2000 |
| 6140540 | Hydrogenation of aromatic amines to produce their ring hydrogenated counterparts This invention relates to an improved hydrogenation and isomerization process wherein aromatic amines are hydrogenated to their ring hydrogenated counterparts and substantially isomerized to their thermodynamic form. These aromatic amines are presented by... | 10/31/2000 |
| 6111140 | Ru--Pd halogen-free catalyzers and method for producing cycloaliphatic amines Catalysts containing ruthenium and palladium for the hydrogenation of aromatic amines to cycloaliphatic amines. Methods for making and using the catalysts.... | 08/29/2000 |
| 6077975 | Process for preparing dicycloaliphatic amines A low-pressure process for the hydrogenation of aromatic amines to give the corresponding symmetrical dicycloaliphatic amines in the presence of rhodium catalysts which are unmodified or modified by Ir, Ru, Os, Pd and/or Pt or mixtures of these metals, on... | 06/20/2000 |
| 6075167 | Method for preparing cycloaliphatic diamines from aromatic diamines This invention relates to a method for preparing cycloaliphatic diamines by hydrogenating aromatic diamines in the presence of a supported ruthenium catalyst and a metal nitrite as a catalyst promoter to increase the rate of the hydrogenation reaction and... | 06/13/2000 |
| 6054619 | Process for preparing cycloaliphatic amines The present invention relates to a low-pressure process for hydrogenating aromatic amines to give the corresponding cycloaliphatic amines in the presence of rhodium catalysts.... | 04/25/2000 |
| 6043395 | Process for preparing variable mixtures of cyclohexyl-amine and dicyclohexylamine A high-pressure process for hydrogenating aromatic amines to give mixtures of the corresponding cycloaliphatic amines and dicycloaliphatic amines in variable ratios in the presence of rhodium catalysts.... | 03/28/2000 |
| 5981801 | Hydrogenation of aromatic diamines This invention relates to a method for preparing cycloaliphatic diamines by hydrogenating an aromatic diamines in the presence of a supported ruthenium catalyst. The catalyst is pre-treated with oxygen or air to increase the rate of the reaction and decre... | 11/09/1999 |
| 5973207 | Hydrogenation of meta-toluenediamine This invention relates to an improved process for the preparation of methylcyclohexane diamine wherein meta-toluenediamine is contacted with hydrogen in the presence of a hydrogenation catalyst. The improvement resides in utilizing a hydrogenation catalys... | 10/26/1999 |
| 5936126 | Process for reacting an organic compound in the presence of a supported ruthenium catalyst A process for the hydrogenation of an aromatic compound, in which at least one hydroxyl group is attached to an aromatic core, or an aromatic compound, in which at least one amino group is attached to an aromatic core, in the presence of a catalyst contai... | 08/10/1999 |
| 5874622 | Hydrogenation of an aromatic compound in the presence of a supported catalyst In a process for hydrogenating an aromatic compound in which at least one hydroxyl group is bonded to an aromatic ring or an aromatic compound in which at least one amino group is bonded to an aromatic ring, in the presence of a catalyst comprising as cat... | 02/23/1999 |
| 5773657 | Hydrogenation of aromatic compounds in which at least one amino group is bonded to an aromatic nucleus Aromatic compounds in which at least one amino group is bonded to an aromatic nucleus are catalytically hydrogenated in the liquid phase by a process in which the catalyst consists essentially of ruthenium and, optionally at least one metal of subgroup I,... | 06/30/1998 |
| 5741929 | Process for preparing a mixture of amino-methyl-cyclohexanes and diamino-methyl-cyclohexanes For the continuous preparation of a mixture of amino-methyl-cyclohexanes and diamino-methyl-cyclohexanes by catalytic hydrogenation of diamino-toluenes with hydrogen at temperatures of from 150° to 260° C. and an H2 pressure of from 20 to 500... | 04/21/1998 |
| 5739404 | Process for preparing a mixture of amino-methyl-cyclohexanes and diamino-methyl-cyclohexanes For the continuous preparation of a mixture of amino-methyl-cyclohexanes and diamino-methyl-cyclohexanes by catalytic hydrogenation of diamino-toluenes with hydrogen at temperatures of from 150° to 260° C. and an H2 pressure of from 20 to 500... | 04/14/1998 |
| 5728883 | Process for preparing a mixture of cyclohexylamine and dicyclohexylamine In the preparation of a mixture of cyclohexylamine and dicyclohexylamine by catalytic hydrogenation of aniline at elevated temperature and elevated H2 pressure, use is made of reduced, support-free catalysts which comprise pressed element (hydr... | 03/17/1998 |
| 5714635 | Method for preparing cylcohexylamine The present invention is related to a method for preparation of cyclohexylamine by hydrogenating aniline at a temperature of 150° to 250° C. under a hydrogen pressure of 1 to 20 atm in the presence of a catalyst selected from a chromium- or thorium- mod... | 02/03/1998 |
| 5705700 | Process for preparing a mixture of cyclohexylamine and dicyclohexylamine To prepare a mixture of cyclohexylamine and dicyclohexylamine by catalytic hydrogenation of aniline at elevated temperature and elevated H2 pressure, the catalyst system used comprises two reduced, unsupported catalysts A and B which are prepar... | 01/06/1998 |
| 5684180 | Fractionation and purification of aromatic polyamine mixtures and the use thereof The invention relates to a process for the fractionation and purification of aromatic polyamine mixtures and to the use thereof.... | 11/04/1997 |
| 5679840 | Fractionation and purification of aromatic polyamine mixtures and the use thereof The invention relates to a process for the fractionation and purification of aromatic polyamine mixtures and their use.... | 10/21/1997 |
| 5679841 | Fractionation and purification of aromatic polyamine mixtures and the use thereof The invention relates to a process for the fractionation and purification of aromatic polyamine mixtures and the use thereof.... | 10/21/1997 |
| 5675035 | Fractionation and purification of aromatic polyamine mixtures and the use thereof The invention relates to a process for the fractionation and purification of aromatic polyamine mixtures and to their use.... | 10/07/1997 |
| 5672737 | Fractionation and purification of mixtures of aromatic polyamines and use thereof The invention relates to a process for the fractionation and purification of mixtures of aromatic polyamines and to the use thereof.... | 09/30/1997 |
| 5648520 | Fractionation and purification of aromatic polyamine and the use thereof The invention relates to a process for the fractionation and purification of aromatic polyamine mixtures and the use thereof.... | 07/15/1997 |
| 5648519 | Fractionation and purification of aromatic polyamine mixtures and the use thereof The invention relates to a process for the fractionation and purification of aromatic polyamine mixtures and to the use thereof.... | 07/15/1997 |
