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| Number | Title | Issue Date |
| 7297832 | Tetramerization of olefins The invention describes a process for tetramerisation of olefins wherein the product stream of the process contains more than 30% of the tetramer olefin. The process includes the step of contacting an olefinic feedstream with a catalyst system containing a transitio... | 11/20/2007 |
| 7161053 | Oligomerization of isobutene in N-butenic hydrocarbon streams Isobutene in isobutenic hydrocarbon mixtures is oligomerized over a solid acidic ion exchange resin, said acidic ion exchange resin containing, for example, sulfonic acid groups, some of whose protons have been exchanged for metal ions. ... | 01/09/2007 |
| 7148177 | Method for producing alkali metal catalyst and use thereof for the side-chain alklation of alkyl aromatics The invention relates to a process for the preparation of an alkali metal catalyst by mixing an alkali metal with pulverulent, solid potassium carbonate as support, wherein the potassium carbonate has a specific surface area of at least 0.3 m2/g, and to t... | 12/12/2006 |
| 7002053 | Method for preparing high-purity diisobutene The invention relates to a process for preparing high-purity diisobutene by reaction of isobutene or isobutene-containing hydrocarbon mixtures over a solid acidic ion-exchange resin containing sulfonic acid groups whose protons have been partly replaced by metal ion... | 02/21/2006 |
| 6414207 | Preparation of a basic catalyst avoiding high temperatures A catalyst comprising at least one alkali metal and at least one metallic or semimetallic promoter selected from the group consisting of Ca, Sr, Ba, Ag, Au, Zn, Cd, Hg, In, Tl, Sn, As, Sb and Bi, on a support which may be doped with one or more compounds ... | 07/02/2002 |
| 6344594 | Highly selective catalytic process for synthesizing 1-hexene from ethylene Ethylene is trimerized to form 1-hexene, at a selectivity of up to about 99 mole percent, by contacting ethylene, at an ethylene pressure of from about 200-1500 psig and at a reaction temperature of from about 0° C. to about 100° C., with a catalyst com... | 02/05/2002 |
| 5859303 | Olefin production A process is provided to trimerize or oligomerize olefins in the presence of an olefin oligomerization catalyst and a solvent which is a product of the olefin oligomerization process.... | 01/12/1999 |
| 5705725 | Aromatic alkali metal alkene addition process A process is provided comprising: (a) contacting a hydrocarbyl lithium with an alkali metal hydrocarbyloxide in the presence of an aromatic compound; and thereafter (b) recovering an aromatic alkali metal compound; and thereafter (c) contacting said aroma... | 01/06/1998 |
| 5414178 | Dimerization catalyst systems and processes A catalyst system composition and a process to prepare a catalyst composition comprising a cobalt compound, a metal alkyl and a coordinating compound is provided. The resultant catalyst system composition can be used to dimerize ethylene with high product... | 05/09/1995 |
| 5243119 | Alkene dimerization A normal 1-alkene containing 3-8 carbons is dimerized in the presence of a supported alkali metal as a catalyst and about 10-100 mol %, based on the amount of alkali metal catalyst, of an oxide of sodium, potassium, rubidium, and/or cesium as a co-catalys... | 09/07/1993 |
| 5233114 | Alkene addition process A process is provided comprising contacting a hydrocarbyl alkali metal compound with a nitrogen-containing compound in the presence of propylene. Optionally, a catalytic support is used during said contacting. Optionally, at least one other alpha-olefin i... | 08/03/1993 |
| 5210361 | Allyl alkali metal alkene addition process A process is provided comprising contacting a hydrocarbyl lithium with an alkali metal hydrocarbyloxide in the presence of propylene. Optionally, a catalytic support is used during said contacting. Optionally, at least one other alpha-olefin is present du... | 05/11/1993 |
| 5202298 | Process for preparing carbonate supports and catalysts Catalyst supports, catalyst systems, methods for the preparation thereof, and dimerization process therewith are provided catalyst supports are extruded from a thick paste of potassium carbonate and water catalyst systems comprise at least one elemental a... | 04/13/1993 |
| 5132483 | Process to reduce fines produced during the catalytic dimerization of olefins A process is provided which comprises: (a) contacting at least one olefinic compound with an alkali metal/alkali metal carbonate catalyst system at a temperature below the dimerization temperature range of the dimerization reaction; followed by (b) heatin... | 07/21/1992 |
| 5118901 | Alkali metal and alkali metal carbonate catalytic systems and catalytic processes Catalyst systems containing a catalyst and catalyst support are presented. The catalyst comprises elemental alkali metal and a metal oxide where the metal in the oxide comes from the lanthanide series. Optionally, a promoter is included in the catalyst. T... | 06/02/1992 |
| 5105048 | Catalyst and catalyst supports, with inorganic nitrates, for olefin dimerization This invention concerns catalyst systems for olefin dimerization wherein said catalyst system comprises at least one elemental alkali metal catalyst, supported on an alkali metal carbonate support, wherein said support includes an inorganic nitrate. This ... | 04/14/1992 |
| 5105049 | Olefin dimerization with hydrogen-treated catalysts Olefin dimerization process comprises catalyst systems and supports. Catalyst supports are prepared from extruding alkali metal carbonate and a liquid. Optionally, the extruded catalyst support further comprises a carbonaceous compound. Catalyst systems c... | 04/14/1992 |
| 5105050 | Alkali metal bicarbonate/alkali metal carbonate support, catalyst system, and olefin dimerization processes therewith Catalyst supports, catalyst systems, methods for the preparation thereof, in dimerization processes therewith are provided. Catalyst supports are prepared from alkali metal bicarbonate, a liquid, and optionally alkali metal carbonate. Optionally, the cata... | 04/14/1992 |
| 5095161 | Process and catalyst for upgrading methane to higher carbon number hydrocarbons Methane is upgraded to higher molecular weight hydrocarbons in a process using a novel catalyst comprising oxides of boron, tin and zinc. The feed admixture also comprises oxygen. The novel catalyst may comprise one or more Group I-A or II-A elements, pre... | 03/10/1992 |
| 5081094 | Alkali metal bicarbonate/alkali metal carbonate support, catalyst system, and olefin dimerization processes therewith Catalyst supports, catalyst systems, methods for the preparation thereof, in dimerization processes therewith are provided. Catalyst supports are prepared from alkali metal bicarbonate, a liquid, and optionally alkali metal carbonate. Optionally, the cata... | 01/14/1992 |
| 5073664 | Dimerization of alkanes with barium peroxide Propane is dimerized to 2,3-dimethylbutane with barium peroxide oxidizer.... | 12/17/1991 |
| 5068488 | Olefin ethylation process A process for ethylating detergent-range olefins which comprises contacting a detergent-range olefin with ethylene in the presence of a catalyst prepared by impregnating a porous alumina support with a metal compound decomposable to an oxide upon calcinat... | 11/26/1991 |
| 5063191 | Alkali metal and alkali metal carbonate catalytic systems and catalytic processes Catalyst systems containing a catalyst and catalyst support are presented. The catalyst comprises elemental alkali metal and a metal oxide where the metal in the oxide comes from the lanthanide series. Optionally, a promoter is included in the catalyst. T... | 11/05/1991 |
| 5057639 | Dimerization process with supported elemental sodium catalyst Catalyst supports, catalyst systems, methods for the preparation thereof, in dimerization processes therewith are provided. Catalyst supports are prepared from potassium carbonate, sodium carbonate, an aluminum-containing compound, and water. Catalyst sys... | 10/15/1991 |
| 5004857 | Method for continuously producing low molecular weight polymer of conjugated diolefin A method for continuously producing a liquid low molecular weight polymer of conjugated diolefin having a number average molecular weight of 300 to 10000. The method comprises the step of continuously polymerizing or copolymerizing conjugated diolefin in ... | 04/02/1991 |
| 4996383 | Inert purge in catalytic dimerization of olefins In processes for dimerization of olefins in the presence of potassium catalysts, plugging of the catalyst bed may be avoided by purging with certain aliphatic hydrocarbons.... | 02/26/1991 |
| 4988658 | Dimerization process and catalysts therefor Catalyst supports, catalyst systems, methods for the preparation thereof, in dimerization processes therewith are provided. Catalyst supports are prepared from potassium carbonate, sodium carbonate, an alumina-containing compound, and water. Catalyst syst... | 01/29/1991 |
| 4982044 | Alkene coupling A normal 1-alkene containing 3-8 carbons is coupled with itself, another such alkene, or ethene in the presence of a supported alkali metal as a catalyst and about 10-100 mol %, based on the amount of alkali metal catalyst, of an alkali metal hydroxide as... | 01/01/1991 |
| 4982043 | Organic solvent treatment for catalysts and olefin dimerization processes therewith Catalyst systems, methods to improve a catalyst system, and dimerization processes therewith are provided. Catalyst systems which comprise at least one elemental alkali metal supported on an alkali metal carbonate catalyst support, are contacted with a li... | 01/01/1991 |
| 4952741 | Paraffinic material treatment for catalysts and olefin dimerization processes therewith Catalyst supports, catalyst systems, methods for the preparation thereof, and dimerization process therewith are provided. Catalyst systems comprise at least one elemental alkali metal and at least one paraffinic material deposited on an alkali metal carb... | 08/28/1990 |
| 4950632 | Catalysts and catalyst supports, with inorganic nitrates, for olefin dimerization This invention concerns catalyst systems for olefin dimerization wherein said catalyst system comprises at least one elemental alkali metal catalyst, supported on an alkali metal carbonate support, wherein said support includes an inorganic nitrate. This ... | 08/21/1990 |
| 4939313 | Olefin dimerization using alkali metal carbonate supports and elemental alkali catalysts Catalyst supports, catalyst systems, methods for the preparation thereof, and dimerization process therewith are provided catalyst supports are prepared from an alkali metal carbonate, water, water soluble ketone and optionally at least one carbonaceous c... | 07/03/1990 |
| 4912280 | Olefin dimerization method Olefins with between 4 and 24 and preferably between 10 and 20 carbon atoms are selectively dimerized by using zeolite catalysts in acid form which are partially exchanged with salts of metals having a valency of two or more.... | 03/27/1990 |
| 4906600 | Paraffinic material treatment for catalysts and olefin dimerization processes therewith Catalyst supports, catalyst systems, methods for the preparation thereof, and dimerization process therewith are provided. Catalyst systems comprise at least one elemental alkali metal and at least one paraffinic material deposited on an alkali metal carb... | 03/06/1990 |
| 4895819 | Alkali metal carbonate supports and elemental alkali catalysis thereof for olefin dimerization Catalyst supports, catalyst systems, methods for the preparation thereof, and dimerization process therewith are provided catalyst supports are prepared from an alkali metal carbonate, water, water soluble ketone and optionally at least one carbonaceous c... | 01/23/1990 |
| 4876410 | Catalyst support, and catalyst for olefin dimerization Catalyst supports, catalyst systems, methods for the preparation thereof, and dimerization process therewith are provided catalyst supports are prepared from an alkali metal carbonate, water, alcohol, and optionally at least one carbonaceous compound. Cat... | 10/24/1989 |
| 4835330 | Glass powder promoter for carbonate supported catalyst and olefin dimerization processes therewith Catalysts and processes for the dimerization or co-dimerization of dimerizable olefins are provided. The catalysts comprise at least one elemental alkali metal and a finely divided glass promoter on an alkali metal carbonate support. Optionally, the suppo... | 05/30/1989 |
| 4795842 | Methane conversion process The invention relates to the conversion of methane to higher hydrocarbons by contact with a solid oxidative synthesizing agent, the specific improvement being the addition to the reaction system of one or more components of the oxidative synthesizing agen... | 01/03/1989 |
| 4727213 | Potassium carbonate supports, catalysts and processes therewith Catalyst supports, catalysts, method for the preparation thereof, and dimerization processes therewith are provided. Catalyst supports consist essentially of alkaline earth aluminate-containing potassium carbonate with at least one carbonaceous compound a... | 02/23/1988 |
| 4713424 | Polymerization of olefinic hydrocarbons and complex-initiator therefor A continuous, liquid phase method for producing a polymer having a predetermined number of conjugated diene units per molecule in which (a) a first monomer stream is contacted with an organo-lithium compound, in a manner to intimately mix increments of mo... | 12/15/1987 |
