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| Number | Title | Issue Date |
| 7411108 | Process for the removal of conjugated olefins from a monoolefin stream A method for removing conjugated olefins from a composition comprising contacting the composition with a Diels-Alder dienophile to convert conjugated olefins to a Diels-Alder adduct and arresting the Diels-Alder adduct. A method comprising confining a Diels-Alder di... | 08/12/2008 |
| 7256306 | Arylalkylsulfonic acids and methods for producing same This invention relates new and improved processes for the preparation of arylalkylsulfonic acids derived from aromatic or substituted aromatic molecules and AOS acid (generally a mixture of alkenesulfonic acid and sultones, produced from the sulfonation of alpha ole... | 08/14/2007 |
| 7250542 | Paraffin alkylation A process for the alkylation of alkane with olefin or olefin precursor such as an oligomer of tertiary olefin comprising contacting a liquid system comprising acid catalyst, isoparaffin and olefin in concurrent downflow into contact in a reaction zone with a dispers... | 07/31/2007 |
| 6846965 | Method for the oligomerization of C2 C8-olefins C2-C8-olefins are oligomerized in a process in which a stream of an olefin-containing hydrocarbon mixture is passed over a heterogeneous, nickel-containing oligomerization catalyst in n successive adiabatically operated reaction zones, where nâ... | 01/25/2005 |
| 6635778 | Catalysts systems for the polymerization and copolymerization of alpha-olefins Catalyst component for the polymerization of alpha-olefins of general formula (I) ##STR1## wherein: M is a transition metal of groups 3, 4-10 of the periodic table of the elements, Each X group can be equal or different and it is hydride, halogen... | 10/21/2003 |
| 6444868 | Process to control conversion of C4+ and heavier stream to lighter products in oxygenate conversion reactions A method for converting heavy olefins present in a product stream exiting a first reaction zone into light olefins and carbonaceous deposits on a catalyst without separation of the heavy olefins from the product stream exiting the first reaction zone. The... | 09/03/2002 |
| 6303839 | Process for producing polymer grade olefins The present invention relates to a process for the production of light olefins comprising olefins having from 2 to 4 carbon atoms per molecule from an oxygenate feedstock. The process comprises passing the oxygenate feedstock to an oxygenate conversion zo... | 10/16/2001 |
| 6194626 | Process for the purification of a diolefin hydrocarbon stream from a naphtha steam cracker A cyclic process for the purification of a diolefin hydrocarbon stream produced in a naphtha steam cracker to produce a high quality diolefin hydrocarbon stream having extremely low levels of acetylene over an extended period because of the ability to rea... | 02/27/2001 |
| 5914433 | Process for producing polymer grade olefins The present invention relates to a process for the production of light olefins comprising olefins having from 2 to 4 carbon atoms per molecule from an oxygenate feedstock. The process comprises passing the oxygenate feedstock to an oxygenate conversion zo... | 06/22/1999 |
| 5895831 | Solid catalyst alkylation process A process for the production of motor fuel alkylate by reacting an alkene hydrocarbon, an alkane hydrocarbon and a hydrogen halide with a solid alkylation catalyst disposed in swing beds. The spent solid alkylation catalyst is regenerated in a highly inte... | 04/20/1999 |
| 5300126 | Process for improving olefin etherification catalyst life A method is disclosed for the pretreatment of olefinic hydrocarbon feedstock to remove conjugated dienes and/or basic nitrogen compounds that deactivate acidic catalyst particles used in olefin conversion processes by reacting the dienes with one or more ... | 04/05/1994 |
| 5284986 | Upgrading of normal pentane to cyclopentene This invention is a process of converting n-pentane to cyclopentene. In accordance with a preferred embodiment n-pentane feed is converted in a dual temperature stage-dual catalyst process without interstage processing of the first-stage product mixture.... | 02/08/1994 |
| 5283385 | Upgrading of normal pentane to cyclopentane This invention is a process of converting n-pentane to cyclopentane. In accordance with a preferred embodiment of the invention, n-pentane feed is converted in dual temperature stage process without interstage processing of the first stage product mixture... | 02/01/1994 |
| 4774364 | Integrated alkylation/alkyl tertiary-alkyl ether synthesis process A process is disclosed for the preparation of alkyl tertiary-alkyl ether concurrent with the alkylation of isoparaffins with olefins. The composite zeolite catalyst is reactivated in the alkyl tertiary-alkyl ether synthesis reactor.... | 09/27/1988 |
| 4134907 | Process for enhancing the fuel value of low BTU gas A process for increasing the fuel value of a gas mixture of carbon monoxide and hydrogen by converting part of the hydrogen and part of the carbon in the carbon monoxide of the gas mixture to methane, which comprises continuously introducing the gas mixtu... | 01/16/1979 |
| 4125567 | Terminal olefin preparation Terminal olefin is prepared by bringing together (1) a compound having the formula ##STR1## wherein Cp is a π-cyclopentadienyl radical, R is terminal alkyl and X is an essentially non-interfering monovalent entity, and (2) a mono-olefin having ... | 11/14/1978 |
| 4026961 | Isoparaffin HF alkylation with low-boiling alkyl fluoride-containing fraction High quality motor fuel alkylate is produced in a combination process comprising hydrofluorination of an olefin-containing hydrocarbon stream with HF to produce alkyl fluorides, separation of the produced alkyl fluorides into a low boiling fraction and a ... | 05/31/1977 |
| 4009221 | HF recovery with alkyl fluoride formation and utility in alkylation A process and apparatus for HF alkylation wherein the vapor from the fractionation zone in which the effluent of the reaction zone is fractionated is contacted with water, the mixture formed is reacted with an olefin to form an alkyl fluoride, the alkyl f... | 02/22/1977 |
| 3985823 | Isoparaffin-olefin alkylation with HF alkylation and isomerization in a soaking zone A process for producing hydrocarbon alkylate from an isoparaffin and an olefin-acting agent. The isoparaffin, the olefin and a first, relatively low strength hydrogen fluoride catalyst are contacted in an alkylation reaction to form a reaction mixture, th... | 10/12/1976 |
| 3972956 | Avoiding pollution by HF catalyst residues in alkylation A used HF catalyst rerun unit comprises in tandem at least two strippers, a first to remove substantially all readily vaporizable components, e.g., light hydrocarbons and HF, and to separate acid-soluble oils as a liquid residue, and a second to produce r... | 08/03/1976 |
