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| Number | Title | Issue Date |
| 7572946 | Process for oligomerizing olefins using a silica-alumina based catalyst An olefin oligomerization process employs a particular silica-alumina catalyst which comprises a non zeolitic support based on silica-alumina containing a quantity of more than 5% by weight and 95% by weight or less of silica (SiO2) and has the following ... | 08/11/2009 |
| 7550640 | High viscosity PAOs based on 1-decene/1-dodecene This invention relates to the use of 1-decene/1-dodecene olefin mixture to produce high viscosity polyalphaolefins (PAOs) having a viscosity of from about 40 cSt to about 100 cSt at 100° C. (ASTM D-445) and a number average molecular weight of between about 1200 to... | 06/23/2009 |
| 7547811 | High viscosity polyalphaolefins based on 1-hexene, 1-dodecene and 1-tetradecene This invention relates to the use of olefin mixtures containing 1-hexene/1-decene/1-dodecene and, additionally, 1-octene or 1-decene to produce high viscosity polyalphaolefins (PAOs) having a viscosity of from about 40 cSt to about 100 cSt at 100° C. (ASTM D-445) a... | 06/16/2009 |
| 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 |
| 7345212 | Process for olefin oligomerization A process for preparing a substantially linear olefinic hydrocarbon mixture is described in which a lower olefin feed comprising one or more C3 to C6 lower olefins is contacted in the presence of water and under olefin oligomerization condition... | 03/18/2008 |
| 7235509 | Processes for the recovery and recycling of boron trifluoride or complexes thereof The invention provides processes for the recovery of a catalyst which are to be applied to the reactions wherein boron trifluoride or a complex thereof is used as the catalyst, that is, (I) a process for the recovery of a catalyst which comprises using as the reacti... | 06/26/2007 |
| 7214842 | Method for oligomerizing olefins Olefins are oligomerized by contacting an olefin with a catalyst system that is comprised of a) at least one transition metal complex that is complexed with a polydentate complexing ligand and b) an alkylaluminoxane, each component being present in such amounts that... | 05/08/2007 |
| 7145049 | Oligomerization process Alkenes, such as normal butenes in a mixed C4 stream are oligomerized, preferably to dimers, which are dimerized in a distillation column reactor over ZSM-57 zeolite catalyst at high conversions and high selectivity to octenes. Prior to oligomerization th... | 12/05/2006 |
| 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 |
| 7112711 | Alkene oligomerization process A process for oligomerising alkenes having from 3 to 6 carbon atoms which comprises contacting a feedstock comprising a) one or several alkenes having x carbon atoms, and, b) optionally, one or several alkenes having y carbon atoms, x and y being different, with a c... | 09/26/2006 |
| 7045488 | Cylic oligomer traction fluid Cyclic oligomers derivable from the copolymerization of isobutylene and isoprene can be hydrogenated to form 1-(2,2,4-trimethylpentyl)-2-isopropyl-3,3,5,5-tetramethylcyclohexane and related compounds, which are useful in lubricants such as a traction fluids. ... | 05/16/2006 |
| 6962895 | Lubricating compositions This invention relates to a lubricating composition comprising at least about 30% by weight at least one mineral oil, having a kinematic viscosity of less than about 8 cSt at 100° C., (A) from about 15% to about 40% by weight of at least one polymer, and (B) up to ... | 11/08/2005 |
| 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 |
| 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 |
| 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 |
| 6548710 | Process for preparing 1-indanones The present invention relates to a process for preparing 1-indanones of formula I: ##STR1## and isomers thereof, wherein R1, R2, R3, R4, R5, and R6 independently represent H or a C1 | 04/15/2003 |
| 6337428 | Conversion of hydrocarbons with a dealuminated NU-86 zeolite catalyst A process for the catalytic conversion of hydrocarbons, in particular for the oligomerization of olefins wherein the catalyst comprises a zeolite which is at least partially in its acid form. The zeolite is a NU-86 zeolite comprising silicon and at least ... | 01/08/2002 |
| 6166278 | Use of naturally acid smectites to remove olefins from aromatics or aromatic mixtures and processes therewith A catalyst for removing olefins from aromatic compounds or mixtures of aromatic compounds wherein the catalyst is a naturally acidic smectite clay containing exchangeable cations wherein the naturally acidic smectite clay has a cation exchange capacity of... | 12/26/2000 |
| 6133497 | Catalyst for removing olefins from aromatic compounds or mixtures thereof A catalyst is described on the basis of acid-activated smectitic clay minerals for removing olefins from aromatic compounds or mixtures of aromatic compounds which is characterized in that the acid-activated clay mineral contains at least 5 milli-equivale... | 10/17/2000 |
| 6127301 | Catalyst system and method for reaction of olefin The present invention provides a novel catalyst system which can be preferably used in the trimerization, oligomerization reaction or polymerization reaction of an olefin, and a method for the trimerization, oligomerization or polymerization reaction of a... | 10/03/2000 |
| 6121502 | Process for manufacture of linear alpha-olefins using a titanium component and an organoaluminum halide component A process for the manufacture of linear alpha-olefins is disclosed. The process employs, for the purposes of oligomerizing an unsaturated aliphatic hydrocarbon to linear alpha-olefins, a catalyst mixture comprising titanium aryl and/or titanium alkoxide, ... | 09/19/2000 |
| 6103814 | Styrenic block copolymer based hot-melt adhesives, their use for disposable soft goods, and tackifying resins contained therein Disclosed are hot-melt adhesive compositions suitable for the manufacture of soft goods. They have a melt viscosity of 60,000 mPa.s or less at a temperature of 120° C. and include: (a) 50 to 150 parts by weight of a styrenic block copolymer or mixtures a... | 08/15/2000 |
| 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 |
| 6031145 | Catalytic composition and process for oligomerising ethylene in particular to 1-butene and/or 1-hexene A catalyst composition for a process of oligomerising ethylene to produce 1-butene and/or 1-hexene wherein the catalytic composition is obtained by mixing at least one chromium compound with at least one aryloxy aluminum compound with general formula R | 02/29/2000 |
| 5929264 | Process for the preparation of substituted indenes and their use as ligand systems for metallocene catalysts The invention relates to a process for the preparation of a compound of the formula IV or IVa ##STR1## in which R1 -R5 are preferably hydrogen or alkyl, which comprises reacting a compound I ##STR2## with a compound II... | 07/27/1999 |
| 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 |
| 5840948 | Process for the preparation of substituted indenes and their use as ligand systems for metallocene catalysts The invention relates to a process for the preparation of a compound of the formula IV or IVa ##STR1## in which R1 -R5 are preferably hydrogen or alkyl, which comprises reacting a compound I ##STR2## with a compound II... | 11/24/1998 |
| 5811619 | Method of production of improved purity light alpha olefines by ogliomerisation of ethylene For obtaining of improved purity of light alpha olefines produced by oligomerization of ethylene, the ethylene is placed in contact with a catalyst obtained by mixture of a zirconium compound with an organic compound selected from the class of acetals and... | 09/22/1998 |
| 5780699 | Synthetic basestocks and process for producing same A process is described for the production of synthetic basestocks from an alpha-olefin feedstock with carbon number in the range C7 -C30 the feedstock having origin in an ethylene polymerization process, the process comprising contac... | 07/14/1998 |
| 5744679 | Using water concentration to control ethylene oligomerization Ethylene is effectively oligomerized to linear alpha-olefins using catalyst systems based on transition metal compounds. It has been found that when the reaction is conducted in a polar organic liquid as solvent, incorporation of water into the solvent at... | 04/28/1998 |
| 5731480 | Coproduction of vinylidene alcohols and vinylidene hydrocarbons A process is described for coproducing vinylidene alcohol and vinylidene olefin. The process involves dimerizing one or more vinylolefins with an alkyl aluminum catalyst to form a first product mixture comprising at least vinylidene olefin and alkyl alumi... | 03/24/1998 |
| 5723713 | Ethylene conversion process This invention relates to a process for the converting ethylene to a mixture of 1-olefins by (a) feeding ethylene through an oligomerization catalyst bed to form an oligomer predominating in C2-C6 olefins and (b) feeding the oligomer, optionally admixed w... | 03/03/1998 |
| 5686371 | Conjugated diene polymerisation A process for the polymerization of one or more conjugated dienes by means of a rare earth based catalyst in which the catalyst is formed by bringing together in liquid hydrocarbon medium in the presence of a small portion of conjugated diene: a) a rare e... | 11/11/1997 |
| 5672800 | Alkene oligomerization In a process for the oligomerization of C2 -C12 -alkenes, an alkene-containing feedstock having a water content of from 0.05 to 0.25 molar %, based on the hydrocarbon content of the feedstock, is passed over a zeolite catalyst. Impro... | 09/30/1997 |
| 5659101 | Catalytic system and process for the production of polydiolefins A catalytic system to polymerize diolefinic monomers consists of a lanthanide salt, an organometallic compound of a metal belonging to groups I, II and III of the periodic table of elements and an organometallic compound of boron. The polymers obtained ar... | 08/19/1997 |
| 5633419 | Polymerization of olefins in the presence of a supported catalyst A supported catalyst component for an olefin polymerization catalyst comprising a solid particulate support, a magnesium halide, and optionally a Group 4 or 5 transition metal compound, a Group 2 or 13 organometal compound, and an electron donor, wherein ... | 05/27/1997 |
| 5625108 | Process for preparing amorphous, catalytically active silicoaluminas An amorphous, micro/mesoporous silica-alumina gel with controlled pore size, having a surface area of at least 500 m2 /g and with a molar ratio of SiO2 :Al2 O3 of at least 30:1, is prepared by hydrolysing and ca... | 04/29/1997 |
| 5489721 | Alpha-olefin polymers This invention deals with viscosity improvers which are obtained through the use of a mixed catalyst system comprising a primary and/or secondary organo halide and a Lewis acid catalyst.... | 02/06/1996 |
| 5451704 | Alpha-olefin oligomerization using supported metal halide catalysts A process for the production of hydrocarbon lubricant basestock comprises contacting C2 to C20 alpha-olefin feedstock, or mixtures thereof, e.g., 1-decene, under heterogeneous oligomerization conditions with a catalyst comprising hal... | 09/19/1995 |
| 5446222 | Oligomers of cyclopentadiene and process for making them The invention provides a two-step process for converting cyclopentadiene dimer to a high density fuel mixture comprising the steps of: (a) reacting said cyclopentadiene dimer in the presence of a solid catalyst comprising a porous crystalline material having a... | 08/29/1995 |
