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| Number | Title | Issue Date |
| 7847140 | Process for making higher olefins A process is disclosed for making higher olefins by oligomerization of a lower olefin e.g ethylene, to higher olefins, using catalytic distillation conditions. Simultaneously and interdependently, the lower olefin is catalytically oligomerized to higher olefins, and... | 12/07/2010 |
| 7429684 | Process for oligomerization of ethylene to linear α-olefins A process for preparing α-olefins from ethylene wherein the α-olefins are substantially free of olefins having greater than 12 carbon atoms comprises contacting ethylene under oligomerization conditions with a 2,6-bis(phenylimino) pyridyl metal halide catalyst in ... | 09/30/2008 |
| 7411105 | Process and installation for the oligomerization of olefins that use a membrane separation This invention relates to a process for the oligomerization of olefins that have 2 to 6 carbon atoms comprising at least: a) One reaction stage in which a first effluent that comprises oligomers, paraffins and olefins that have not... | 08/12/2008 |
| 7335802 | Methods of preparing branched aliphatic alcohols Systems and methods to produced branched aliphatic alcohols are described. Systems may include a dehydrogenation-isomerization unit, an olefin dimerization unit, an olefin isomerization unit, a hydroformylation unit, a dehydrogenation unit, a hydrogenation unit and/... | 02/26/2008 |
| 7332609 | PEG-substituted pyridine ligands and related water-soluble catalysts Amphiphilic Group VIII metathesis catalysts, as can be used in a range of polymerization reactions and other chemical methodologies. ... | 02/19/2008 |
| 7291759 | Oligomerization of alkenes in a plurality of successive heterogeneous catalyst zones Process for oligomerizing an alkene stream over a solid catalyst comprising sulfur and nickel, in which the oligomerization is carried out in two or more successive catalyst zones and the molar ratio of sulfur to nickel in the first catalyst zone is less than 0.5 an... | 11/06/2007 |
| 7259285 | Oligomerization catalyst, a method for production and the use thereof An oligomerization catalyst for olefins having from 2 to 6 carbon atoms is produced by treating aluminum oxide with a nickel compound and a sulfur compound, either simultaneously or firstly with the nickel compound an then with the sulfur compound, and subsequently ... | 08/21/2007 |
| 7205446 | Conversion of unsaturated chemicals to oligomers An oligomerization process in which hydrocarbon feedstocks are contacted with a hydrotreating catalyst in the absence of hydrogen and in the liquid phase. The catalyst is a heterogeneous catalyst selected from supported reduced metals, metals oxides, metal sulfides ... | 04/17/2007 |
| 7161054 | Preparation of oligomers of alkenes having from 4 to 8 carbon atoms Process for preparing oligomers of alkenes having from 4 to 8 carbon atoms from a feed stream comprising such alkenes or hydrocarbon streams in which such alkenes are present over a nickel-containing, heterogeneous catalyst in n successive adiabatically operated rea... | 01/09/2007 |
| 7126037 | Butene oligomer derivatives having terminal 1,4-butanediol functional groups Butene oligomer derivatives having tert-butyl groups as one of the terminal groups, having a repeating unit of the main hydrocarbon chain consisting of 80% by mole or more of —CH2C(CH3)2—, and carrying the other terminal group co... | 10/24/2006 |
| 7041866 | Solid-acid isomerization catalyst and process A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component co... | 05/09/2006 |
| 7037988 | Process for the co-oligomerisation of ethylene and alpha olefins A process for production of higher linear alpha olefins and/or alkyl-branched alpha olefins, which comprises the co-oligomerisation of one or more alpha olefins with ethylene in the presence of a metal catalyst system employing one or more bis-aryliminepyridine MX | 05/02/2006 |
| 7037999 | Mid-range vinylidene content polyisobutylene polymer product and process for producing the same A relatively low molecular weight, mid-range vinylidene content PIB polymer product and a process for making the same. At least about 90% of the PIB molecules present in the product comprise alpha or beta position isomers. The vinylidene (alpha) isomer content of th... | 05/02/2006 |
| 7030286 | Method for producing 1-octene The invention relates to a process for preparing 1-octene by reacting 1,3-butadiene with a telogen of the formula H—X—Y—H, where X is O, N, S or P and Y is C, N or Si and X and Y bear, depending on their valence, further substituents, in the presence of a telo... | 04/18/2006 |
| 6977322 | Isomerization catalyst and processes A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a tungstated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component ... | 12/20/2005 |
| 6963014 | C13 alcohol mixture and functionalised C13 alcohol mixture A process for preparing a C13-alcohol mixture comprises a) bringing a butene-containing C4-hydrocarbon stream containing less than 5% by weight, based on the butene fraction, of isobutene into contact with a n... | 11/08/2005 |
| 6951831 | Catalyst composition for dimerizing, co-dimerizing, oligomerizing and polymerizing olefins A catalyst composition for use in dimerizing, co-dimerizing or oligomerizing olefins comprises: at least one zero-valent nickel complex; at least one acid with formula H+X− in which Xâˆ... | 10/04/2005 |
| 6900152 | Catalyst for trimerization of ethylene and process for trimerizing ethylene using the catalyst A catalyst used for trimerization of ethylene into 1-hexene is descrobed, which comprises (i) a specific organometallic complex having a neutral multidentate ligand having a tripod structure, (ii) an alkylaluminoxane, and an optional ingredient selected from: (iii) ... | 05/31/2005 |
| 6896859 | Method for the production of a titanium-containing zeolite The present invention concerns a method for the production of a titanium-containing zeolite by: (a) combining a hydrolyzable silicon compound and a hydrolyzable titanium compound; (b) adding a basic quaternary ammonium compound in an aqueous medium to the mixture fr... | 05/24/2005 |
| 6884916 | Conversion of unsaturated chemicals to oligomers An oligomerization process in which hydrocarbon feedstocks are contacted with a hydrotreating catalyst in the absence of hydrogen and in the liquid phase. The catalyst is a heterogeneous catalyst selected from supported reduced metals, metals oxides, metal sulfides ... | 04/26/2005 |
| 6881874 | Process for the catalytic oxidation of hydrocarbons A process for the production of an olefin comprising partially combusting in a reaction zone a mixture of a hydrocabon and an oxygen-containing gas in the presence of a catalyst which is capable of supporting combustion beyond the fuel rich limit of flammability to ... | 04/19/2005 |
| 6852898 | Method for producing oligomers In a process for preparing essentially unbranched oligomers of alkenes having from 4 to 6 carbon atoms starting from the alkenes or a hydrocarbon stream comprising such alkenes over a nickel-containing heterogeneous catalyst in an adiabatically operated reactor at f... | 02/08/2005 |
| 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 |
| 6737555 | Method for oligomerizing C6-olefins In a process for oligomerizing C6-olefins by reactin of a C6-olefin-containing reaction mixture over a nickel-containing fixed-bed catalyst, the reaction over the fixed-bed catalyst is run at a conversion to oligomerized C6-olefins o... | 05/18/2004 |
| 6686511 | Process for making a lube base stock from a lower molecular weight feedstock using at least two oligomerization zones A process for making a lube base stock wherein an olefinic feedstock is separated into a light olefin fraction and a medium olefin fraction. The light olefin fraction is contacted with a first oligomerization catalyst in a first oligomerization zone to pr... | 02/03/2004 |
| 6667269 | Catalytic composition and process for dimerization, codimerization and oligomerization of olefins A catalytic composition for the dimerization, the codimerization or the oligomerization of olefins is obtained by bringing into contact at least one nickel compound that contains a heterocyclic carbene with at least one hydrocarbylaluminum halide and opti... | 12/23/2003 |
| 6649802 | Layered oligomerization catalyst system A process is disclosed for the oligomerization of light olefins to higher olefins. The process uses a catalyst that has an inert core and a thin layer of molecular sieve applied to the inert core. The molecular sieve is a crystalline silicoaluminate or me... | 11/18/2003 |
| 6646173 | Sequence of processes for olefin oligomerisation A process is described for carrying out olefin oligomerisation in two catalysis steps of different types, using an organic feed containing at least one olefin. The cut to be treated, containing at least one olefin (Cn), is introduced into a fir... | 11/11/2003 |
| 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 |
| 6444866 | Sequence of processes for olefin oligomerization A process for oligomerising olefins in an organic feed containing at least one olefin comprises two steps with different types of catalysis. The cut to be treated containing at least one olefin (Cn) is introduced via line 1 into a reaction zone... | 09/03/2002 |
| 6437170 | Mixture of diesters of adipic or phthalic acid with isomers of nonanols 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 1 H NMR spectrum of which, observed in CDCl3, the ratio of the ... | 08/20/2002 |
| 6417305 | Oligomerization of ethylene Ethylene is oligomerized with certain catalysts based on iron and cobalt complexes of 2,6-pyridinecarboxaldehydebis(imine) and 2,6-diacylpyridine-bis(imine) tridentate ligands.... | 07/09/2002 |
| 6403853 | Olefin oligomerization using surface modified molecular sieve catalyst In a process for the oligomerization of light olefins (e.g. propylene) to more valuable higher olefins (e.g. hexene), the use of a molecular sieve (e.g. SAPO-11) that has been acid washed has shown to provide superior selectivity to, and yield of, the des... | 06/11/2002 |
| 6384154 | Preparation of halogen-free, reactive polyisobutene A process for preparing halogen-free, reactive polyisobutene having a terminal double bond content of more than 60 mol % and an average molecular weight Mn of 800-3000 dalton by cationic polymerization in the liquid phase of isobutene over an a... | 05/07/2002 |
| 6331656 | Hydroformylation process In a process for the hydroformylation of olefins having from 12 to 100 carbon atoms in the presence of a cobalt carbonyl catalyst at pressures of from 100 to 400 bar and at from 100 to 200° C., depressurization and recovery of the cobalt catalyst by extr... | 12/18/2001 |
| 6184428 | Catalyst and process for ethylene oligomerization A catalyst and a process are provided for oligomerizing ethylene. A heterogeneous catalyst system comprises: (1) a chelating ligand, preferably 2-diphenyl phosphino benzoic acid (DPPBA); (2) a nickel precursor, preferably nickel chloride hexahydrate (NiCl... | 02/06/2001 |
| 6063881 | Oligomerization of propylene Propylene may be oligomerized by contact with cobalt complexes corresponding to the following structure: ##STR1## wherein R1 -R7 are hydrogen, hydrocarbyl or inert functional groups, and X is an anion. The resulting olefins are ... | 05/16/2000 |
| 6043401 | Reactive, low molecular weight, viscous poly(1-olefins) and copoly(1-olefins) and their method of manufacture Catalysts and processes are described to make low molecular weight, essentially terminally-unsaturated, viscous poly(1-olefin) or copoly(1-olefin) having a high terminal vinylidine content from a feed stock containing one or more 1-olefin and other volati... | 03/28/2000 |
| 6027707 | NU-88 zeolite, a process for its preparation and catalytic applications thereof The invention concerns NU-88 zeolite, characterized by: i) a chemical composition with the following formula, expressed in terms of the mole ratios of the oxides for the anhydrous state: 100 XO2, mY2 O3, pR2/n O where m i... | 02/22/2000 |
| 5945575 | Method of producing reactive halogen-free, polyisobutene A process for the preparation of halogen-free, reactive polyisobutene having a content of terminal double bonds of more than 50 mol % and an average molecular weight Mn of from 500 to 5000 dalton by the cationic polymerization of isobutene or i... | 08/31/1999 |
