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| Number | Title | Issue Date |
| 7915467 | Semiconductor wafer and semiconductor device Disclosed is a semiconductor wafer which is characterized in that a resin layer composed of a resin composition containing a cyclic olefin resin (A) having an epoxy group and a photoacid generator (B) is arranged on a surface on which a circuit element is formed, an... | 03/29/2011 |
| 7687672 | In-line process for generating comonomer The present invention relates to an in-line method for generating comonomer, such as 1-hexene or 1-octene, from monomer, such as ethylene. The comonomer generated is directly transported, without isolation or storage, to a polyethylene polymerization reactor. The in... | 03/30/2010 |
| 7473812 | Method for producing butene oligomers and tert-butyl ethers from Cflows containing isobutene The invention relates to a process for preparing butene oligomers and tert-butyl ethers from C4 hydrocarbon streams, by converting the isobutene to butene oligomers and tert-butyl ethers and removing them from the C4 streams. ... | 01/06/2009 |
| 7411106 | Molecular sieve compositions, catalyst thereof, their making and use in conversion processes The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene The catalyst composition comprises a molec... | 08/12/2008 |
| 7402718 | Conversion process The invention relates to a conversion process for making olefin(s) using a molecular sieve catalyst composition. More specifically, the invention is directed to a process for converting a feedstock comprising an oxygenate in the presence of a molecular sieve catalys... | 07/22/2008 |
| 7378563 | Molecular sieve compositions, catalysts thereof, their making and use in conversion processes The invention relates to a conversion process of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene, in the presence of a molecular sieve catalyst composition that includes a molecular sieve and a Group ... | 05/27/2008 |
| 7378562 | Process for removal of alkynes and/or dienes from an olefin stream The present invention is a process for removing alkynes and/or dienes from an olefin product stream withdrawn from an oxygenate-to-olefins reactor. The process comprises hydrogenating a first olefin stream that has alkynes and/or dienes in the presence of excess hyd... | 05/27/2008 |
| 7358410 | Processes for forming polypropylene from an oxygenate-contaminated monomer feedstock The present invention provides various processes for producing polypropylene from an oxygenate-contaminated propylene-containing feedstock, preferably derived from an oxygenate to olefin reaction system. In one embodiment, the process includes providing a propylene-... | 04/15/2008 |
| 7355086 | Method for stabilizing catalyst activity during MTO unit operation A method for maintaining the activity of silicoaluminophosphate (SAPO) molecular sieve catalyst particles during oxygenate to olefin conversion reactions. After regeneration of SAPO catalyst particles, the regenerated particles are mixed with particles having coke o... | 04/08/2008 |
| 7351780 | Method for manufacturing high viscosity polyalphaolefins using ionic liquid catalysts A method of continuously manufacturing a high viscosity polyalphaolefin product by introducing a monomer and an ionic liquid catalyst together into a reaction zone while simultaneously withdrawing from the reaction zone a reaction zone effluent that contains the hig... | 04/01/2008 |
| 7319178 | Molecular sieve compositions, catalysts thereof, their making and use in conversion processes The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene. The catalyst composition comprises a mole... | 01/15/2008 |
| 7309806 | Maintaining molecular sieve catalytic activity under water vapor conditions The invention is directed to methods for protecting metalloaluminophosphate molecular sieves, particularly silicoaluminophosphate (SAPO) molecular sieves, from loss of catalytic activity due to contact with a gas containing water. The methods of the invention provid... | 12/18/2007 |
| 7238844 | Olefin oligomerization This invention is to a method of oligomerizing an olefin feed stream. The olefin feed stream contains at least one C2 to C12 olefin to obtain an olefin feed stream and has less than 1,000 ppm by weight oxygenated hydrocarbon. The olefin is olig... | 07/03/2007 |
| 7193121 | Method for producing 4-vinylcyclohexene, ethyl benzole and styrene The invention relates to a process for preparing 4-vinylcyclohexene, which comprises the steps (A) providing an n-butane-containing feed gas stream, (B) feeding the n-butane-containing feed gas stream into at least... | 03/20/2007 |
| 7183450 | Olefin oligomerization This invention is to a method of oligomerizing an olefin feed stream. The olefin feed stream contains at least one C2 to C12 olefin to obtain an olefin feed stream and has from about 1,000 ppm to about 10 percent by weight oxygenated hydrocarbo... | 02/27/2007 |
| 7157533 | Process of obtaining an isoprene-enriched FCC C5 fraction and selective polymerization of isoprene from said fraction A process is described for obtaining from an “FCC” initial C5 fraction which is enriched with isoprene and purified and usable for the selective polymerization of isoprene. A process is also described for obtaining an isoprene homopolymer from a polymerization m... | 01/02/2007 |
| 7154013 | Olefin metathesis A process in which tetramethylethylene and neohexene are produced by starting with butene in a distillation column reactor to produce a product containing ethylene, diisobutene, tetramethylethylene, heavier oligomers. After separating these components, the separated... | 12/26/2006 |
| 7141157 | Blending of low viscosity Fischer-Tropsch base oils and Fischer-Tropsch derived bottoms or bright stock A process for preparing Fischer-Tropsch derived lubricating base oils by blending a Fischer-Tropsch distillate fraction having a viscosity of 2 or greater but less than 3 cSt at 100 degrees C. with a Fischer-Tropsch derived bottoms fraction; lubricating base oil com... | 11/28/2006 |
| 7041861 | Olefin metathesis A process in which neohexene is produced by starting with butene in a distillation column reactor to produce a product containing ethylene, diisobutene, heavier oligomers. After separating these components, the separated diisobutene is further reacted with ethylene ... | 05/09/2006 |
| 7022784 | Synthetic lubricant composition and process A liquid polymer suitable for use as a lubricant base oil is produced by polymerizing ethylene and at least one alpha-olefin using a metallocene catalyst to provide a polymer which is then isomerized and hydrogenated to produce the liquid polymer. ... | 04/04/2006 |
| 6969496 | Apparatus with increased yield and selectivity using side-by-side reaction zones An apparatus provides for increased feed throughput without loss of conversion or selectivity by increasing the catalyst volume in a final reactor of at least three reaction zones. The catalyst volume of the final reactor may be larger because the inner and outer sc... | 11/29/2005 |
| 6884914 | Olefin oligomerization This invention is to a method of oligomerizing an olefin feed stream. The olefin feed stream contains at least one C2 to C12 olefin to obtain an olefin feed stream and has less than 1,000 ppm by weight oxygenated hydrocarbon. The olefin is olig... | 04/26/2005 |
| 6844476 | 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 method com... | 01/18/2005 |
| 6841711 | Process for making a lube base stock from a lower molecular weight feedstock in a catalytic distillation unit A process for making a lube base stock wherein an olefinic feedstock is contacted with an oligomerization catalyst in a catalytic distillation unit to produce a product having a higher number average molecular weight than the olefinic feedstock. That product is sepa... | 01/11/2005 |
| 6770791 | Production of olefin dimers and oligomers Disclosed is an olefin containing stream from an oxygenate to olefin process, and a process for making olefin dimer and oligomer product from the olefin containing stream using a nickel based oligomerization catalyst. The dimer/oligomer product is optionally convert... | 08/03/2004 |
| 6768034 | Catalytic production of olefins at high methanol partial pressures Disclosed is a catalytic method for operating an oxygenate to olefins conversion reaction to provide a substantial quantity of prime olefin in the product. The product is provided by operating within desired parameters of weight hourly space velocity and oxygenate p... | 07/27/2004 |
| 6740790 | Making an olefin product from an oxygenate Disclosed is a method for making olefin product from an oxygenate-containing feedstock. In the method, a silicoaluminophosphate molecular sieve catalyst is contacted with the oxygenate-containing feedstock in a reactor at an average catalyst feedstock exposure index... | 05/25/2004 |
| 6706936 | Process for making a lube base stock from a lower molecular weight feedstock A process for making a lube base stock wherein a highly paraffinic feedstock is dehydrogenated to produce an olefinic feedstock. That olefinic feedstock is contacted with an oligomerization catalyst in an oligomerization zone to produce a product having a higher num... | 03/16/2004 |
| 6660894 | Process for upgrading an oligomerization product A process is provided for upgrading an oligomerization product through hydrogenation and isomerization with some selective/minor cracking resulting in a synthetic lube base oil with improved pour point and viscosity index. The upgrading process includes c... | 12/09/2003 |
| 6632972 | Process for the selective preparation of DIB from an i-butene-containing C4 stream The invention relates to a process for preparing diisobutylene (DIB) from an i-butene-containing C4 raffinate I, in which the C4 stream is passed through a first hydroisomerization reactor (A) and a fractionation column (B) and is th... | 10/14/2003 |
| 6541578 | Increased space-time yield in gas phase polymerization The space time yield of a gas phase reactor, particularly a polyethylene reactor may be increased by replacing at least 80 weight % of the ballast gas with a gas having a higher heat capacity than the ballast gas. Preferably the gas replacing the ballast ... | 04/01/2003 |
| 6531639 | Catalytic production of olefins at high methanol partial pressures Disclosed is a catalytic method for operating an oxygenate to olefins conversion reaction to provide a substantial quantity of prime olefin in the product. The product is provided by operating within desired parameters of weight hourly space velocity and ... | 03/11/2003 |
| 6398946 | Process for making a lube base stock from a lower molecular weight feedstock A process for making a lube base stock wherein a highly paraffinic feedstock (with boiling points within the range of from 258° to 1100° F.) is dehydrogenated to produce an olefinic feedstock, which is oligomerized to produce an oligomerized product, wh... | 06/04/2002 |
| 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 |
| 6156947 | Process for the production of butene-1 from a mixture of C4 olefins A simplified process for jointly producing butene-1 and ether in a catalytic distillation column which comprises an upper catalytic zone for etherification and a lower catalytic zone for isomerization of C4 plus olefins and conversion of butadi... | 12/05/2000 |
| 6111156 | Integrated high temperature high conversion olefin/polyolefin process A combined chain of a high temperature, high conversion steam cracker in combination with a polymerization or oligomerization unit provides capital and operating cost reduction.... | 08/29/2000 |
| 6080903 | Process for oligomer production and saturation A process for the production of C8 and higher carbon number alkene oligomers by the oligomerization of light olefins to heavier olefins is improved by the addition of heavy paraffins to the oligomerization zone. The recycle of the heavy paraffi... | 06/27/2000 |
| 6075173 | Process for production of isobutene and propylene from hydrocarbon cuts containing four carbon atoms The present invention concerns a process for the production of isobutene and propylene by metathesis of an olefinic C4 cut. The process comprises three successive steps: 1) selective hydrogenation of butadiene with isomerisation of butene-1 to ... | 06/13/2000 |
| 6071864 | Methods for preparation of arylated poly.varies.olefins Novel methods for the preparation of modified poly -olefins, and compositions prepared by the novel methods are disclosed. The modified poly alpha-olefins of the present invention are useful as base fluids or additives in synthetic lubricants.... | 06/06/2000 |
| 6072093 | Process for oligomer production and saturation A process for the production of C8 and higher olefins by the oligomerization of light olefins to heavier olefins is improved by the addition of cycloparaffins to the oligomerization zone. The recycle of the cycloparaffins extends the catalyst a... | 06/06/2000 |
