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| Number | Title | Issue Date |
| 7405339 | Catalyst composition comprising a heteropoly acid, zinc, and a support component and processes therefor and therewith A process of contacting at least one isoparaffin and at least one C5 olefin in the presence of a catalyst composition under conversion conditions to provide for converting the at least one isoparaffin and the at least one C5 olefin is provided.... | 07/29/2008 |
| 7355087 | Production of 1-alkenes from mixed olefin streams using catalytic distillation A catalytic distillation process for isomerizing and separating 1-alkenes from a mixed alkene stream. The process comprises contacting a mixed alkene stream comprising the 1-alkene and homologs thereof with a supported isomerization catalyst under isomerization/dist... | 04/08/2008 |
| 7332637 | Isomerization of olefins with carboxylic acid A method of modifying the activity of a solid acid catalyst by contact with a carboxylic acid is presented. The modified catalyst is exposed to a feed mixture including olefins in a reaction zone, and an effluent including an isomerized olefin product is withdrawn f... | 02/19/2008 |
| 7132582 | Catalytic process for the preparation of isolongifolene The present invention relates to a catalytic process for preparation of isolongifolene using nanocrystalline solid super acid. This process is an eco-friendly, single step, solvent free catalytic process for the preparation of a tricyclic sesqui-terpene hydrocarbon,... | 11/07/2006 |
| 6875901 | Olefin isomerization process An olefin isomerization process employs a basic metal oxide catalyst, such as magnesium oxide, which retains at least about 85 percent of its initial activity for at least about 168 hours of on-stream time. The catalyst is preferably a high purity magnesium oxide. T... | 04/05/2005 |
| 6841713 | Process for preparing bicylo[2.2.1] heptane derivatives The invention relates to economical and efficient methods for producing 2-methylene-3-methylbicyclo[2,2,1]heptane, 2,3-dimethylbicyclo[2.2.1]hept-2-ene and the like that are useful for materials of producing base oil of traction drive fluid for traction drive lubric... | 01/11/2005 |
| 6768038 | Alpha olefin production A method for making alpha olefins from internal olefins using catalytic distillation techniques and an olefin double bond isomerization catalyst, and separately recovering said alpha olefins. ... | 07/27/2004 |
| 6593505 | Catalyst of mixed fluorosulfonic acids A catalyst comprising A) a stationary acid component selected from the group consisting of a perfluorinated ion exchange polymer on an inert support, a silane modified perfluorosulfonic acid, and a sulfated metal oxide; and B) a mobile acid component sele... | 07/15/2003 |
| 6420305 | Solid acid catalyst, method for producing the same and reaction method using the same A method for producting a solid acid catalyst is provided which produces a shaped material of a solid acid catalyst containing a sulfureous component but have a high activity and having a practically sufficient handleability and mechanical strength involv... | 07/16/2002 |
| 6281400 | Process for preparation of a catalytic microcomposite from a silicate and a highly fluorinated ion exchange resin The present invention relates to a process for preparing a microcomposite comprising a highly fluorinated ion-exchange polymer containing pendant sulfonate functional groups, said polymer existing as aggregated particles entrapped within and dispersed thr... | 08/28/2001 |
| 6262326 | Process for the preparation of spherically shaped microcomposites A process for the preparation of at least one spherically shaped porous microcomposite is provided which microcomposite comprises a perfluorinated ion-exchange polymer containing pendant sulfonic and/or carboxylic acid groups entrapped within and highly d... | 07/17/2001 |
| 6215036 | Method for producing high purity isobutylene from a butane plus fraction containing isobutylene and butylene-1 A process for processing a feedstock comprising a major amount of olefinic hydrocarbons having 4 carbon atoms per molecule, including isobutene as well as but-1-ene and but-2-enes, wherein the process comprises processing said feedstock in a distillation ... | 04/10/2001 |
| 6137023 | Process for the production of high purity isobutene combining reactive distillation with hydroisomerisation and skeletal isomerisation The invention relates to a process for producing high purity isobutene from a hydrocarbon cut essentially comprising olefinic hydrocarbons containing 4 carbon atoms per molecule including isobutene, also butene-1 and butene-2 compounds in a ratio which su... | 10/24/2000 |
| 5990368 | Isomerization of allenes to alkynes with an alkaline-earth metal hydride containing catalyst Providing an isomerization process which can isomerize allenes to alkynes less expensively and stably is an assignment to be solved by the present invention and given thereto. The present invention is an isomerization process including the step of reactin... | 11/23/1999 |
| 5969205 | Process for preparing C4 --C6 --alkenes having an internal double bond comprising recycling a portion of a product stream C4 -C6 -alkenes having an internal double bond can be produced by hydroisomerization of C4 -C6 -alkenes having a terminal double bond in the presence of H2 on a catalyst having a content of a noble me... | 10/19/1999 |
| 5910618 | Process for preparing 2,3-dimethyl-2-butene 2,3-Dimethyl-2-butene is prepared by isomerizing 2,3-dimethyl-1-butene using at least one acid selected from the group consisting of sulfuric acid and sulfonic acids. By this process, 2,3-dimethyl-2-butene is effectively prepared from 2,3-dimethyl-1-buten... | 06/08/1999 |
| 5877379 | Olefin conversion process involving coke suppressor impregnated catalyst A composition and an olefin conversion process are disclosed. The composition comprises a zeolite having incorporated therein a coke-suppressing amount of a coke suppressor selected from the group consisting of silicon oxides, phosphorus oxides, boron oxi... | 03/02/1999 |
| 5849974 | Olefin isomerization process Described is a process for isomerizing -olefin to produce olefinic oil having a viscosity at 100° C. of no more than about 1.6 cSt, a viscosity at 40° C. of no more than about 3.8 cSt, and a pour point of 0° C. or lower, preferably -10° C. or l... | 12/15/1998 |
| 5569806 | Olefin isomerisation process using metallic catalysts impregnated with organic sulphur-containing compounds before loading into the reactor The invention concerns a process for the isomerisation of less substituted olefins to more substituted external olefins and/or internal olefins in the absence of diolefins, in the presence of a palladium based catalyst deposited on a support. Before loadi... | 10/29/1996 |
| 5502269 | Process for the isomerization of external olefins to internal olefins concomitantly with diolefin hydrogenation The present invention concerns a process for the isomerization of external olefins to internal olefins, the feedstock also containing diolefins, using a palladium based catalyst which contains 0.05% to 10% by weight of sulphur, said catalyst being treated... | 03/26/1996 |
| 5352846 | Process for the production of an olefin-free tert, amyl alkyl ether-rich fraction and a n-pentane rich paraffin fraction The simultaneous production of an olefin-free, tert.amyl alkyl, ether-rich fraction an n-pentane-rich paraffin fraction, wherein a charge based on isopentenes is hydrogenated (1) under appropriate conditions to bring about a distribution of the methyl but... | 10/04/1994 |
| 5304696 | Process for olefin isomerization A process for the double bond isomerization of olefinic compounds is provided comprising contacting an olefinic compound and a sulfated zirconia catalyst.... | 04/19/1994 |
| 5120898 | Process for isomerizing hydrocarbons A solid strong acid catalyst useful for hydrocarbon reactions, especially for the skeletal isomerization of paraffinic hydrocarbons is provided by supporting sulfate (SO4) and at least one member selected from Group VIII metals on a support con... | 06/09/1992 |
| 5105043 | Sulfuric acid catalysis and methods of use for isomerization of hydrocarbons Compositions containing sulfuric acid and one or more of certain chalcogen-containing compounds in which the chalcogen compound/H2 SO4 molar ratio is below 2 contain the mono-adduct of sulfuric acid which is catalytically active for ... | 04/14/1992 |
| 5082986 | Process for producing lube oil from olefins by isomerization over a silicoaluminophosphate catalyst The present invention relates to a process for producing a C20 + lube oil from olefins or reducing the pour point of a lube oil comprising isomerizing the olefins over a catalyst comprising an intermediate pore size silicoaluminophosphate molec... | 01/21/1992 |
| 5073663 | Increasing the level of 2-methyl-2-butene in isoamylene A method for increasing the ratio of 2-methyl-2-butene (2MB2) to 2-methyl-1-butene (2MB1) in isoamylenes involves fractionating a feedstream containing tertiary amyl methyl ether (TAME) and isoamylenes including 2MB2 and 2MB1 in a ratio of about 2:1 to ef... | 12/17/1991 |
| 5008466 | Process for the isomerization of alkenes having a terminal double bond to give alkenes having an internal double bond Alkenes having a terminal double bond can be isomerized to give alkenes having an internal double bond if alkenes having a terminal double bond or hydrocarbon feedstock having a content of alkenes of this type having a terminal double bond are subjected t... | 04/16/1991 |
| 4835328 | Process for the production of 2,3-dimethylbutene-1 from propene 2,3-dimethylbutene-1 (2,3-DMB1) is produced from propene by a process comprising the steps of: (A) converting propene in one or more stages to a product comprising 2,3-dimethylbutene-2 (2,3-DMB-2) under conditions whereby the proportion of 2,3-DMB-2 in th... | 05/30/1989 |
| 4724274 | Process for producing 2-methyl-2-butene from a 5 carbon atom olefins cut containing 2-methyl-1-butene and at least one n-pentene Process for producing 2-methyl-2-butene from a charge containing olefins of 5 carbon atoms, including 2-methyl-1-butene and at least one n-pentene, wherein a mixture of said charge with hydrogen and at least one sulfur compound is contacted with a support... | 02/09/1988 |
| 4672147 | Method for isomerizing olefins using acidic composite catalysts This invention provides a method for isomerizing olefins using a catalyst product which is a composite of a perfluorinated polymersulfonic acid and an anion-stabilizing agent such as hexafluoroisopropanol or trifluoroaetic acid. The composite catalyst has... | 06/09/1987 |
| 4544780 | Catalytic isomerization of tertiary olefins A process for the isomerization of a tertiary double bonded olefin having a hydrogen atom attached to a carbon atom vicinal to the tertiary carbon of the double bond comprises treating the olefin in a solution of dry liquid sulfur dioxide in the presence ... | 10/01/1985 |
| 4482775 | Isomerization of C4 alkenes A method for isomerizing isobutene or n-butene to produce a mixture of isobutene and normal butene, and polymerizing at least a portion thereof to produce isobutene/n-butene codimer, which comprieses feeding at least 80 weight % of either the isobutene or... | 11/13/1984 |
| 4367362 | Process for the isomerization of N-alkenes A process for the catalytic skeleton isomerization of n-alkenes to isoalkenes comprises contacting the n-alkene with a fluorinated aluminum oxide as the catalyst at temperatures of 250°-550° C., in the presence of 0.5-150% by weight of water, based on t... | 01/04/1983 |
| 4288643 | Process for preparing 2,3-dimethyl-butene-2 A process for the preparation of 2,3-dimethylbutene-2 is disclosed, which comprises the steps of converting isovaleraldehyde to isopropylacrolein, hydrogenating -isopropylacrolein to form 2,3-dimethylbutanol, dehydrating 2,3-dimethylbutanol to form... | 09/08/1981 |
| 4236037 | Process for the separation of olefins A butene mixture is separated to yield a n-butene rich product and an isobutylane rich product in a fractionator system. Other suitable olefins may be separated in a similar manner.... | 11/25/1980 |
| 4217461 | Olefinic hydrocarbon isomerization process A process for the isomerization of normal olefinic hydrocarbons is disclosed. The feed stream is passed through a first reaction zone and is then cooled sufficiently to cause the condensation of from about 1 to 25 mole percent of the hydrocarbons in the i... | 08/12/1980 |
| 4190612 | Regioselective isomerization at carbon atom vicinal to doubly bonded tertiary carbon atom by sulfur dioxide catalysis Beta pinene is converted to alpha pinene in liquid sulfur dioxide. The process is a regioselective isomerization of organic compounds having a carbon-carbon double bond at a tertiary carbon atom, by sulfur dioxide-induced allylic rearrangement of a hydrog... | 02/26/1980 |
| 4168284 | Alpha olefin isomerization in preparing alkane phosphonic acids and intermediates Preparation of long chain alkane phosphonic acids involves reacting alpha olefin with macroreticular strong acid cation exchange resin to isomerize the olefin, reacting resulting internally unsaturated olefin with dimethylphosphite to produce non-terminal... | 09/18/1979 |
| 4132745 | Process for isomerizing 1-butene to 2-butene Process for isomerizing 1-butene to 2-butene by contacting 1-butene, at a temperature from 50 to 140° C, in the presence of hydrogen, with an isomerization catalyst containing a noble metal from group VIII of the periodic classification of elements, whic... | 01/02/1979 |
| 4104321 | Process for the separation of olefins A butene mixture is separated to yield an n-butene rich product and an isobutylene rich product in a fractionator system. The fractionator reflux is isomerized before introduction into the fractionator. Other suitable olefins may be separated in a similar... | 08/01/1978 |
