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| Number | Title | Issue Date |
| 7282137 | Process for preparing basestocks having high VI A process for preparing high VI lubricating oil basestocks comprising hydrotreating, hydrodewaxing and optionally hydrofinishing. The hydrotreating step is under conditions such that the amount of conversion to 343° C. minus is less than 5 wt. % of the feedstock an... | 10/16/2007 |
| 7241375 | Heavy hydrocarbon composition with utility as a heavy lubricant base stock A heavy hydrocarbon composition with utility as a heavy hydrocarbon base stock comprising at least 95 wt % paraffin molecules, of which at least 90 wt % are isoparaffin, containing hydrocarbon molecules having consecutive numbers of carbon atoms, is a liquid at 100Â... | 07/10/2007 |
| 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 |
| 7220350 | Wax isomerate yield enhancement by oxygenate pretreatment of catalyst A waxy hydrocarbon feed is catalytically treated with a dewaxing catalyst that has been selectively activated. The selective activation of the catalyst involves treating the catalyst with at least one oxygenate. The selectively activated catalyst can then be used to... | 05/22/2007 |
| 7220888 | Method for producing hydrocarbons having a modified carbon skeleton The invention relates to a method for producing hydrocarbons having a modified carbon skeleton by reacting aliphatic hydrocarbons a) with themselves, b) with another aliphatic hydrocarbon or c) with aromatic alkyl substituted hydrocarbons, in the presence of a metal... | 05/22/2007 |
| 7201838 | Oxygenate treatment of dewaxing catalyst for greater yield of dewaxed product Fischer-Tropsch hydrocarbon synthesis using a cobalt catalyst is used to produce waxy fuel and lubricant oil hydrocarbons from synthesis gas derived from natural gas. The waxy hydrocarbons are hydrodewaxed, with reduced conversion to lower boiling hydrocarbons, by c... | 04/10/2007 |
| 7148388 | Process for preparing and olefinic hydrocarbon mixture In a process for preparing an olefinic hydrocarbon mixture comprising at least 5% by weight of mono-olefin oligomers of the empirical formula: CnH2n where n is greater than or equal to 6, a feedstock comprising n-butene and... | 12/12/2006 |
| 7132042 | Production of fuels and lube oils from fischer-tropsch wax Dewaxed fuel and lubricant base stocks are made by (a) producing a synthesis gas from natural gas, (b) reacting the H2 and CO in the gas in the presence of a cobalt Fischer-Tropsch catalyst, at reaction conditions effective to synthesize a waxy hydrocarbo... | 11/07/2006 |
| 7129197 | Synthesis of poly-alpha olefin and use thereof One or more oligomers of an olefin are prepared in the presence of a single-site catalyst. Preferably, the olefin is an α-olefin, and the oligomers are a poly-alpha-olefin (PAO). The PAO so prepared is completely or substantially free of tertiary hydrogen resulting... | 10/31/2006 |
| 7125818 | Catalyst for wax isomerate yield enhancement by oxygenate pretreatment A dewaxing catalyst is selectively activated by treatment with an oxygenate. Selective activation is accomplished by treated the dewaxing catalyst with a carrier feed containing oxygenate. The selectively activated dewaxing catalyst when used to dewax waxy hydrocarb... | 10/24/2006 |
| 7087152 | Wax isomerate yield enhancement by oxygenate pretreatment of feed A waxy hydrocarbon feed is catalytically dewaxed with a catalyst that has been selectively activated. The selective activation of the catalyst involves contacting the dewaxing catalyst with a feed mixture containing waxy hydrocarbon and at least one oxygenate. The p... | 08/08/2006 |
| 7081553 | Cobalt flash process The Cobalt Flash Process is modified by replacing formic acid with acetic acid as process acid. Efficiency using acetic acid as process acid is achieved by two improvements which may be added separately and independently: (1) separation of acetic acid and water from... | 07/25/2006 |
| 7081554 | Oxo process The Oxo Process that recycles its cobalt primarily as cobalt salt is improved by concentration of the cobalt salt solution from the demetalling section and the addition of a separation step for organic acid and water. This allows for a higher reuse of acid in the pr... | 07/25/2006 |
| 7077947 | Process for preparing basestocks having high VI using oxygenated dewaxing catalyst A process for preparing high VI lubricating oil basestocks comprising hydrotreating, hydrodewaxing and optionally hydrofinishing. The hydrotreated feedstock is hydrodewaxed using a dewaxing catalyst that has been selectively activated by oxygenate treatment. The hyd... | 07/18/2006 |
| 6951605 | Method for making lube basestocks A method to produce high quality lube oil products involving hydrotreating a waxy feed to produce a hydrotreated feed and subsequently hydrodewaxing the hydrotreated feed and hydrofinishing the hydrodewaxed feed. ... | 10/04/2005 |
| 6908894 | Alkylaromatic hydrocarbon compositions A surfactant composition comprising: alkylarylsulfonate surfactant system comprising at least two isomers of the alkylarylsulfonate surfactant of the formula: wherein: L is an ... | 06/21/2005 |
| 6846778 | Synthetic isoparaffinic premium heavy lubricant base stock A synthetic, isoparaffinic heavy hydrocarbon composition useful as a heavy lubricant base stock contains hydrocarbon molecules having consecutive numbers of carbon atoms, is a liquid at 100° C., at which temperature its kinematic viscosity is above 8 cSt and has re... | 01/25/2005 |
| 6808542 | Photoluminescent markers and methods for detection of such markers The invention provides photoluminescent markers consisting essentially of fluorene copolymers, which are colorless or nearly colorless to the naked eye and exhibit strong photoluminescence between about 380-800 nm upon exposure to ultra-violet radiation or laser lig... | 10/26/2004 |
| 6627779 | Lube base oils with improved yield The invention provides methods for preparing a blended lube base oils comprising at least one highly paraffinic Fischer Tropsch lube base stocks and at least one base stock composed of alkylaromatics, alkylcycloparaffins, or mixtures thereof. The use of b... | 09/30/2003 |
| 6410810 | Handling method of (fluoroaryl) borane compound and preparing method of hydrocarbon solution A mixture of bis- and tris(fluoroaryl)borane compounds expressed by General Formula (1) below is handled in the form of a slurry made with a hydrocarbon solvent: ##STR1## where each of R1, R2, R3, R4 and R5... | 06/25/2002 |
| 6255546 | Functional fluid with low Brookfield Viscosity A functional fluid of low Brookfield Viscosity comprising a mixture of hydrocracked base stocks, optionally a minor amount of solvent neutral base stock, and additives.... | 07/03/2001 |
| 6215033 | Dispersants and dispersant viscosity index improvers from selectively hydrogenated polymers: blends with lower molecular weight components The invention provides dispersants and dispersant viscosity index improvers which include polymers of conjugated dienes which have been hydrogenated, functionalized, optionally modified, and post treated. The dispersant substances include a copolymer of t... | 04/10/2001 |
| 6103676 | Dispersants and dispersant viscosity index improvers from selectively hydrogenated polymers: hydroformylation/reductive amination reaction products The invention provides dispersants and dispersant viscosity index improvers which include polymers of conjugated dienes which have been hydrogenated, functionalized, optionally modified and post treated. The dispersant substances include a copolymer of tw... | 08/15/2000 |
| 6071863 | Biodegradable polyalphaolefin fluids and formulations containing the fluids Biodegradable polyalphaolefin fluids which are useful in functional fluid and lubricant compositions are oligomers of mixtures of C12 and C14 alphaolefins. The fluids have kinematic viscosities at 100° C. of from 5 to 20 mm2 | 06/06/2000 |
| 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 |
| 5637783 | Dispersants and dispersant viscosity index improvers from selectively hydrogenated polymers The invention provides dispersants and dispersant viscosity index improvers which include polymers of conjugated dienes which have been hydrogenated and functionalized. The dispersant substances include compositions including a copolymer of a ring substit... | 06/10/1997 |
| 5633414 | Preparation of tetrafluoroethylene Metal fluoride and carbon are fed to a plasma flame to form a gaseous reaction mixture which is quenched to form tetrafluoroethylene. The plasma flame can be formed from a non-reactive gas and the metal fluoride and carbon then become part of the plasma f... | 05/27/1997 |
| 5633415 | Dispersants and dispersant viscosity index improvers from selectively hydrogenated polymers The invention provides dispersants and dispersant viscosity index improvers which include polymers of conjugated dienes which have been hydrogenated and functionalized. The dispersant substances include compositions including a copolymer of two different ... | 05/27/1997 |
| 5462680 | Free radical adducts of fullerenes with hydrocarbons and polymers This invention relates to novel compositions of matter comprising free radical adducts of a fullerene with one or more saturated hydrocarbons having a number average molecular weight ranging from about 200 to about ten million. Attachment of saturated hyd... | 10/31/1995 |
| 5420372 | Alpha-olefin oligomers useful as base stocks and viscosity index improvers, and lubricating oils containing same and method of making the oligomers An alpha-olefin oligomer consisting essentially of repeating units having the structural formula: ##STR1## wherein x represents an integer from 3 to 11, inclusive; and y represents the number of repeating units in the oligomer such that the weight av... | 05/30/1995 |
| 5315053 | Normally liquid alpha-olefin oligomers useful as base stocks and viscosity index improvers, and lubricating oils containing same A lubricating oil composition comprising a normally liquid alpha-olefin oligomer consisting essentially of repeating units having the structural formula: ##STR1## wherein x represents an integer from 3 to 11, inclusive; and y represents the number of... | 05/24/1994 |
| 5208402 | Liquid fuels for internal combustion engines and process and apparatus for making same Internal combustion engine liquid fuels are produced by the mixing of a natural gasoline component and at least one octane-enhancing component. The mix is weathered during the blending operation to remove light-weight hydrocarbons comprising one- to four-... | 05/04/1993 |
| 5208403 | High VI lubricant blends from slack wax Lubricant compositions comprise blends or mixtures of low viscosity, 3-8 cS e.g. about 5 cS(100° C.), HVI lube basestock with higher viscosity, 15 cS+e.g. 30+ cS(100° C.) HVI PAO lube basestock produced from slack wax by thermal cracking to alpha olefin... | 05/04/1993 |
| 5180863 | Conversion of alpha-olefin dimer to liquid lubricant basestock A process is disclosed for the preparation of low viscosity lubricant range hydrocarbons having high viscosity index which comprises: contacting olefinic dimer, or mixtures thereof, with a Group 6 metal oxide disproportionation catalyst on a solid support... | 01/19/1993 |
| 5177276 | Alpha-olefin oligomers useful as base stocks and viscosity index improvers, and lubricating oils containing same An alpha-olefin oligomer consisting essentially of repeating units having the structural formula: ##STR1## wherein x represents an integer from 3 to 11, inclusive; and y represents the number of repeating units in the oligomer such that the weight av... | 01/05/1993 |
| 5157176 | Recycling process, apparatus and product produced by such process for producing a rubber extender/plasticizing agent from used automobile rubber tires A preferred embodiment of the process and apparatus for recycling used automobile rubber tires is described in which small pieces of rubber tires are progressively fed into a vertical reactor of the counter-flow type in which the material progressively de... | 10/20/1992 |
| 5146022 | High VI synthetic lubricants from cracked slack wax A process is disclosed for the production of synthetic lubricants having high viscosity index and thermal stability by oligomerizing a mixture of C5 -C18 or C6 -C16 alpha-olefins produced from the thermal cracki... | 09/08/1992 |
| 5136118 | High VI synthetic lubricants from cracked refined wax A process is disclosed for the production of synthetic hydrocarbon lubricants having high viscosity index by oligomerizing a mixture of alpha-olefins comprising the reaction product from the thermal cracking of refined wax. The oligomerization is carried ... | 08/04/1992 |
| 5093533 | Blended gasolines and process for making same Blended gasolines are produced by the mixing of a butane-pentane rich component, a natural gasoline component, and at least one octane-enhancing component. The mix is weathered during the blending operation to remove light-weight hydrocarbons comprising t... | 03/03/1992 |
| 5026933 | Olefin oligomerization with surface modified zeolite catalyst A process for producing substantially linear hydrocarbons by oligomerizing a lower olefin at elevated temperature and pressure which comprises contacting the lower olefin under oligomerization/polymerization conditions with siliceous acidic ZSM-23 zeolite... | 06/25/1991 |
