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| Number | Title | Issue Date |
| 7875166 | Microcrystalline paraffin The invention relates to a novel and completely synthetic microcrystalline paraffin, said paraffin being obtained in a simple manner and with a high yield by the catalytic hydromerisation of paraffin FT comprising 20 to 105 carbon atoms. Said paraffins can be pasty ... | 01/25/2011 |
| 7754065 | Wax transport process Processes for transporting wax including the steps of producing granular solid wax particles, having a powder coating, that are resistant to breakage or clumping; loading the particles into a transport vessel; transporting the particles; and unloading the particles.... | 07/13/2010 |
| 7754066 | Method of making base oil from transported wax Method for making base oil, comprising transporting a height of greater than 7.5 meters of granular solid wax particles comprising a highly paraffinic wax with defined boiling points and a powder coating to a distant location, and hydroprocessing the transported wax... | 07/13/2010 |
| 7402236 | Process to make white oil from waxy feed using highly selective and active wax hydroisomerization catalyst A process for producing one or more white oils, by: a) hydroisomerization dewaxing a waxy feed with a defined composition over a highly selective and active wax hydroisomerization catalyst with a defined composition under conditions sufficient to produce a white oil... | 07/22/2008 |
| 7332072 | Process to prepare a waxy raffinate A process to prepare a waxy raffinate product by (a) hydrocracking/hydroisomerizing a Fischer-Tropsch derived feed, wherein weight ratio of compounds having at least 60 or more carbon atoms and compounds having at least 30 carbon atoms in the Fischer-Tr... | 02/19/2008 |
| 7285206 | Process to prepare a lubricating base oil and a gas oil A process to prepare a lubricating base oil and a gas oil by (a) hydrocracking/hydroisomerizing a Fischer-Tropsch product, wherein weight ratio of compounds having at least 60 or more carbon atoms and compounds having at least 30 carbon atoms in the Fischer-T... | 10/23/2007 |
| 7282465 | Catalyst and its use for improving the pour point of hydrocarbon charges A catalyst comprising at least one ZBM-30 zeolite, synthesized in the presence of a particular structuring agent such as triethylenetetramine, at least one porous mineral matrix, at least one hydro-dehydrogenating element, preferably chosen from the elements of Grou... | 10/16/2007 |
| 7214307 | White oil from waxy feed using highly selective and active wax hydroisomerization catalyst A composition of white oil having a kinematic viscosity at 100° C. between about 1.5 cSt and 36 cSt, a viscosity index greater than an amount calculated by the equation: Viscosity Index=28×Ln(the Kinematic Viscosity at 100° C.)+105, less than 18 weight percent of... | 05/08/2007 |
| 6918958 | Acid pigment dispersants and pigment preparations The invention relates to pigment dispersants of the formula (I), and to pigment preparations including at least one organic pigment and at least one pigment disperant of the formula (I): wherein Q1, R1 | 07/19/2005 |
| 6790386 | Dielectric fluid A dielectric fluid comprises an isoparaffinic base oil and hydrogen donor compound. The base oil may be a hydroisomerized isoparaffinic oil, and the hydrogen donor may be a substituted, or partially saturated aromatic compound. The resulting dielectric fluid exhibit... | 09/14/2004 |
| 6787022 | Winter diesel fuel production from a fischer-tropsch wax A process for the production of a winter diesel fuel from wax containing hydrocarbons produced by the Fischer-Tropsch hydrocarbon synthesis process. A 300° F.+ Fischer-Tropsch fraction is upgraded first by hydroisomerization followed by catalytic dewaxing resulting... | 09/07/2004 |
| 6695965 | Process for adjusting the hardness of Fischer-Tropsch wax by blending A wax blending process is disclosed which retains the desirable properties of a Fischer-Tropsch wax, while adjusting the hardness of the wax to within to a desired range. The invention utilizes a synergistic effect between hard virgin Fischer-Tropsch wax ... | 02/24/2004 |
| 6635681 | Method of fuel production from fischer-tropsch process A process is disclosed for preparing a finished fuel product from a stabilized product mixture, which is produced from the effluent of a Fischer-Tropsch synthesis process. In the process, a Fischer-Tropsch synthesis process is conducted at a site which is... | 10/21/2003 |
| 6431253 | Method of recovering and refining filler from a lost wax composition When a waste wax composition containing a filler is treated so that the filler is recovered and thus reclaimed, almost all the impurities coming from the lost wax casting mold may be removed, thereby recovering and thus refining at a high purity, a filler... | 08/13/2002 |
| 6420618 | Premium synthetic lubricant base stock (Law734) having at least 95% noncyclic isoparaffins A premium synthetic lubricating oil base stock having a high VI and low pour point is made by hydroisomerizing a Fischer-Tropsch synthesized waxy, paraffinic feed wax and then dewaxing the hydroisomerate to form a 650-750° F.+ dewaxate. The waxy feed has... | 07/16/2002 |
| 6365037 | Production process of low pour-point oil A process for producing a low pour-point oil which permits the production of a lower pour point oil without severer hydrodewaxing conditions is disclosed, which comprises hydrodewaxing a mineral oil fraction, which has been separated from a crude oil by d... | 04/02/2002 |
| 6352098 | Method of recovering and refining filler from a lost wax composition When a waste wax composition containing a filler is treated so that the filler is recovered and thus reclaimed, almost all the impurities coming from the lost wax casting mold may be removed, thereby recovering and thus refining at a high purity, a filler... | 03/05/2002 |
| 6294076 | Fischer-Tropsch wax and hydrocarbon mixtures for transport (law938) The invention is a process for producing a mixture of Fischer-Tropsch product that is solid at ambient conditions (between 32° F. and 95° F.), such as wax, and hydrocarbon liquid, such as naphtha, that can be pumped at ambient temperature (between 32° ... | 09/25/2001 |
| 6284127 | Catalytic dewaxing with trivalent rare earth metal ion exchanged ferrierite A process for dewaxing waxy hydrocarbonaceous materials, such as hydrocarbon fuel and lubricating oil fractions to reduce their cloud and pour points comprises reacting the material with hydrogen in the presence of a dewaxing catalyst comprising at least ... | 09/04/2001 |
| 6268401 | Fischer-tropsch wax and crude oil mixtures having a high wax content The invention is a process for producing a mixture of wax and crude oil which can be pumped at ambient temperature. The wax is preferably a Fisher-Tropsch wax. The temperature of the crude oil is controlled to a level below the dissolution temperature of ... | 07/31/2001 |
| 6074548 | Process for obtaining paraffin or paraffin fractions A process for fractional crystallization of paraffin from mineral oil based and synthetic crude paraffin, wherein crude paraffin having a high oil content is crystallized in a crystallizer equipped with perforated metal sheets (31) extending in a zig-zag ... | 06/13/2000 |
| 6066250 | Method for reclaiming investment casting wax compositions and the compositions obtainable thereby A used investment casting wax composition containing a filler and/or a residue after a wax component is removed from the composition is dissolved or dispersed into an organic solvent. The mixture is separated into a dissolved wax fraction and a wax-contai... | 05/23/2000 |
| 6042715 | Method for modeling the crystallization of paraffins in petroleum fluids A thermodynamic model is formed which allows determination of the temperature at which waxes or paraffins appear in petroleum fluids, and notably in crudes, as well as the solid fraction that precipitates when the temperature of the petroleum fluid falls ... | 03/28/2000 |
| 6013171 | Catalytic dewaxing with trivalent rare earth metal ion exchanged ferrierite A process for dewaxing waxy hydrocarbonaceous materials, such as hydrocarbon fuel and lubricating oil fractions to reduce their cloud and pour points comprises reacting the material with hydrogen in the presence of a dewaxing catalyst comprising at least ... | 01/11/2000 |
| 6008164 | Lubricant base oil having improved oxidative stability The instant invention is directed to a method for producing a lubricating base stock having a preselected oxidative stability comprising the steps of: (a) separating, into a plurality of fractions based on molecular shape, a hydroisomerized hydrocarbon wa... | 12/28/1999 |
| 5922189 | Process to refine petroleum residues and sludges into asphalt and/or other petroleum products A process for significantly decreasing processing time, reducing capital costs, increasing yield, improving quality, and improving the safety of refining petroleum residues and sludges generated by the oil producers, refineries and re-refiners comprising ... | 07/13/1999 |
| 5904834 | Synthetic wax for food applications The present invention relates to the use of wax for food applications, which wax has a congealing point of more than 65° C. and a Saybolt color of more than +25, which wax is obtainable by subjecting a wax prepared in a Fischer-Tropsch synthesis process ... | 05/18/1999 |
| 5847209 | Process for recovery of solid and reusable urea from the urea adduction process A process for recovery of solid and reusable urea from the urea adduction process. Refinery streams are subjected to a step of urea adduction for removal of unwanted branched products, aromatics and sulphur. The adduct is purified, dried and then subjecte... | 12/08/1998 |
| 5718821 | Copolymers of ethylenically unsaturated carboxylic acid esters with polyoxyalkylene ethers of lower, unsaturated alcohols as flow-improving agents for paraffin containing oils The invention relates to novel copolymers of ethylenically unsaturated carboxylic acid esters with polyoxyalkylene ethers of lower, unsaturated alcohols, their preparation, their use as flow-improving agents for paraffin-containing oils, and oils which co... | 02/17/1998 |
| 5547562 | Oil dewaxing method The invention decloses a method for dewaxing a hydrocarbon oil which comprises adding an oil-soluble poly C18 -C22 alkylmethacrylate having a molecular weight of from about 10,000 to about 2,000,000 daltons to a hydrocarbon oil conta... | 08/20/1996 |
| 5457253 | Oxide addition to noble metal on rare earth modified silica alumina as hydrocarbon conversion catalyst By this invention there is provided a catalyst composition comprising a Group IVB oxide, an amorphous silica-alumina support having dispersed thereon a rare earth oxide, which as herein used also includes yttrium oxide, and a metal(s) selected from the gr... | 10/10/1995 |
| 5374190 | Wax craft product and method of manufacturing A wax craft product which comprises a bendable extruded rod of wax having a textured surface is provided. The textured surface enables the rod of wax to adhere to itself and to other surfaces when the rod of wax is pressed into contact with itself and oth... | 12/20/1994 |
| 5370788 | Wax conversion process Charge waxy hydrocarbon is converted to lube oil base stock by hydrotreating in the presence of catalyst characterized by its ability to convert a waxy hydrocarbon distillate of high pour point to a hydrocarbon product of reduced pour point and high visco... | 12/06/1994 |
| 5365003 | Shape selective conversion of hydrocarbons over extrusion-modified molecular sieve A process for a shape selective hydrocarbon conversion such as toluene disproportionation, involves contacting a reaction stream under conversion conditions with a catalytic molecular sieve which has been preselectivated by agglomerating with an organosil... | 11/15/1994 |
| 5306681 | Method for recovery or maintaining the activity of hydroisomerization catalysts The isomerization activity of hydroisomerization catalyst is recovered by subjecting the catalyst to a wash using light aromatic solvents at elevated temperature, e.g. toluene at 300° C. This hot aromatic solvent wash may be preceded by a hot hydrogen co... | 04/26/1994 |
| 5292426 | Wax conversion process Hydrocarbon lube boiling range stock of high Pour Point may be catalytically hydrotreated to yield a product of high viscosity index and reduced Pour Point which is suitable as a lube base oil.... | 03/08/1994 |
| 5290426 | High porosity, high surface area isomerization catalyst and its use A novel, high porosity, high surface area catalyst is disclosed which is useful in wax isomerization processes, especially for the production of high viscosity index, low pour point lubricating oil base stocks or blending stocks. The catalyst contains a c... | 03/01/1994 |
| 5254177 | Method and system for disposing of contaminated paraffin wax in an ecologically acceptable manner A method of treating blocks of waste paraffin wax entailing initially subdividing the wax into particles less than one cubic inch in size, and preferably in elongated string or rod form, then intimately mixing the particles with a viscous hydrocarbon liqu... | 10/19/1993 |
| 5223122 | Producing method of fractionated wax products having different molecular weights from solid wax A producing method of fractionated wax products characterized in that it comprises the steps of preparing as a raw material, solid wax, more particularly, low molecular weight polyolefine wax which is a byproduct when manufacturing polyolefine polymer and... | 06/29/1993 |
| 5209879 | Method for inducing transformations in waxes The method and apparatus of this invention transforms naturally occurring or synthetic waxes into a state characterized by the fact that when the waxes solidify, they do so in forms different from those forms into which they would solidify except for the ... | 05/11/1993 |
