Waxes Patents (Class 208/20)
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Patent number: 11891580Abstract: The present invention provides a microcrystalline wax having a needle penetration according to ASTM D-1321 at 25° C. of more than 1, a crystallinity according to XRD between 5 and 70%, an initial boiling point of less than 500° C., a congealing point in the range of from 60 to 120° C., an oil content according to ASTM D-721 of more than 2 wt. %, wherein the microcrystalline wax has a fraction up to C40 having at least 5 wt % of multiple methyl-branched paraffins as determined with GC×GC.Type: GrantFiled: August 3, 2020Date of Patent: February 6, 2024Assignee: SHELL USA, INC.Inventors: Andries Hendrik Janssen, Gerrit Leendert Bezemer, Edward Julius Creyghton, Guy Lode Magda Maria Verbist, Pim Lohmeijer, Christina Georgieva Christova-Zdravkova
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Patent number: 10751711Abstract: The present invention relates to a process for treating a catalyst to improve performance, and more specifically to a process for treating a Fischer-Tropsch catalyst using a high hydrogen syngas to improve catalyst performance.Type: GrantFiled: August 18, 2017Date of Patent: August 25, 2020Assignee: BP p.l.c.Inventors: Ewen James Ferguson, Manuel Ojeda Pineda, Alexander James Paterson
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Patent number: 10603222Abstract: A forming pocket suitable for forming conglomerates from particulate material to be used as an absorbent padding for hygienic products, includes an external forming substrate for receiving particulate material, the substrate having openings and a shape conjugated to a form of the absorbent padding to be made. The forming pocket includes a grid supporting structure, which has openings and is coupleable with the substrate to support the substrate during suction of particulate material through the substrate. The supporting structure has an external surface configured to contact the substrate and has a shape conjugated to the shape of the substrate. A method of making the forming pocket includes obtaining from at least one first metal sheet first and second sets of elements having a plurality of cuts, and wedging the elements of the first set with the elements of the second set via the cuts to make the grid supporting structure.Type: GrantFiled: November 3, 2015Date of Patent: March 31, 2020Assignee: GDM S.p.A.Inventors: Matteo Piantoni, Valerio Soli
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Patent number: 10272724Abstract: A non directional pneumatic tire is provided for an agricultural irrigation system. The tire includes first and second side walls and a radially outer wall defining an internal inflation chamber. A non directional tread pattern is defined on the tire and includes a plurality of longitudinal protrusions positioned substantially parallel to a rotational axis of the tire. The longitudinal protrusions are arranged in first and second rows extending from the first and second side walls toward and across the equatorial plane of the tire. The longitudinal protrusions of the first and second rows circumferentially alternate with each other and there is a circumferential spacing between adjacent longitudinal protrusions at the equatorial plane so that no portion of one longitudinal protrusion circumferentially coincides with or overlaps another.Type: GrantFiled: August 11, 2015Date of Patent: April 30, 2019Assignee: Bridgestone Americas Tire Operations, LLCInventors: Bill J. Wallet, John J. Regallis, Jeffrey D. Parker, Nobuo Shimizu, Andrew T. Miklic
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Publication number: 20150034528Abstract: The present invention provides a Fischer-Tropsch derived paraffin wax comprising paraffins having from 9 to 24 carbon atoms. In another aspect the present invention provides a thermal energy storage material comprising a Fischer-Tropsch derived paraffin wax comprising paraffins having from 9 to 24 carbon atoms, which Fischer-Tropsch derived paraffin wax has a melting point in the range of 15 to 40° C.Type: ApplicationFiled: October 31, 2012Publication date: February 5, 2015Inventors: Arlène Marcellina Pouw, Pascal Edzo Armin Rots, Antonius Adrianus Maria Roovers, Lip Piang Kueh, Jelle Sietsma, Iris Teo Jin Li
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Patent number: 8906222Abstract: The present invention relates to a management method for a wax fraction storage tank that stores a wax fraction produced by Fischer-Tropsch synthesis until the wax fraction is hydrocracked, the management method including maintaining the temperature inside the tank at 90° C. to 130° C. and maintaining the atmosphere inside the tank to be an inert gas atmosphere.Type: GrantFiled: December 11, 2008Date of Patent: December 9, 2014Assignees: Japan Oil, Gas and Metals National Corporation, Inpex Corporation, Nippon Oil Corporation, Japan Petroleum Exploration Co., Ltd., Cosmo Oil Co., Ltd., Nippon Steel Engineering Co., Ltd.Inventors: Shigenori Nakashizu, Yutaka Miyata, Kazuhito Sato
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Patent number: 8734725Abstract: A system for producing enhanced wax alternatives, including a high shear device comprising a rotor and a stator, and configured to process petroleum wax and base oil with a hydrogen-containing gas under shearing conditions to form a feedstock, wherein at least one of the rotor and the stator comprises a toothed surface; and a reactor comprising a reactor inlet and a reactor outlet, and configured for hydrogenation of the feedstock for a time sufficient to produce enhanced hydrogenated products, wherein the high shear device is in fluid communication with the reactor, whereby the feedstock is transferable therebetween.Type: GrantFiled: May 1, 2013Date of Patent: May 27, 2014Assignee: H R D CorporationInventors: Abbas Hassan, Gregory G. Borsinger, Rayford G. Anthony, Aziz Hassan
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Patent number: 8669401Abstract: A method and system for producing dispersed waxes, including a high shear mechanical device. In one embodiment, the method comprises forming a dispersion of wax globules in a carrier liquid in a high shear device prior to implementation in a waxy product. In another instance the system for producing waxy products comprises a high shear device for dispersing wax in a carrier liquid.Type: GrantFiled: April 24, 2013Date of Patent: March 11, 2014Assignee: H R D CorporationInventors: Abbas Hassan, Aziz Hassan, Gregory G. Borsinger
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Patent number: 8506888Abstract: Embodiments disclosed herein describe a system for producing enhanced wax alternatives, the system that includes a reactor having a reactor inlet and a reactor outlet; and a high shear device having a device inlet, a device outlet, a rotor, a stator, and a catalytic surface, wherein the device outlet is in fluid communication with the reactor inlet.Type: GrantFiled: November 13, 2012Date of Patent: August 13, 2013Assignee: H R D CorporationInventors: Abbas Hassan, Gregory G. Borsinger, Rayford G. Anthony, Aziz Hassan
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Patent number: 8491777Abstract: Embodiments disclosed herein describe a system for producing enhanced wax alternatives. The system comprises a reactor with at least one inlet and one outlet and at least one high shear mixing device with at least one inlet and one outlet. The at least one outlet of said high shear mixing device is in fluid communication with at least one inlet of said reactor. The high shear mixing device may comprise counter rotating rotors. The high shear mixing device may also comprise at least one catalytic surface. Embodiments disclosed herein also describe a method of producing enhanced wax alternatives. The method comprises (1) providing petroleum wax and base oil; (2) mixing said petroleum wax and base oil with a hydrogen-containing gas in a high shear device to form a feedstock; and (3) hydrogenating said feedstock for a time sufficient to produce enhanced hydrogenated products.Type: GrantFiled: January 22, 2010Date of Patent: July 23, 2013Assignee: H R D CorporationInventors: Abbas Hassan, Gregory G. Borsinger, Rayford G. Anthony, Aziz Hassan
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Patent number: 8491778Abstract: Embodiments disclosed herein describe method of producing hydrogenated products, the method that includes providing a wax and an oil; processing the wax and the oil with a gas under high shear conditions to form a high shear product; and hydrogenating the high shear product to produce hydrogenated products. The wax may be a petroleum wax comprising alkane hydrocarbons with formula CnH2n+2, wherein n=20-40.Type: GrantFiled: November 12, 2012Date of Patent: July 23, 2013Assignee: H R D CorporationInventors: Abbas Hassan, Gregory G. Borsinger, Rayford G. Anthony, Aziz Hassan
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Patent number: 8450539Abstract: A method and system for producing dispersed waxes, including a high shear mechanical device. In one embodiment, the method comprises forming a dispersion of wax globules in a carrier liquid in a high shear device prior to implementation in a waxy product. In another instance the system for producing waxy products comprises a high shear device for dispersing wax in a carrier liquid.Type: GrantFiled: November 6, 2009Date of Patent: May 28, 2013Assignee: H R D CorporationInventors: Abbas Hassan, Aziz Hassan, Gregory G. Borsinger
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Patent number: 8273137Abstract: A middle distillate fuel composition is provided comprising (a) a middle distillate base fuel, (b) a Fischer-Tropsch derived paraffinic wax component, and (c) one or more cold flow additives; a method for formulating a middle distillate fuel composition comprising a middle distillate base fuel, comprising (i) incorporating into the base fuel a Fischer-Tropsch derived wax component. The use of a Fischer-Tropsch derived wax component in a middle distillate fuel composition, for the purpose of increasing the effect of a CFPP improver additive in the composition is disclosed.Type: GrantFiled: January 8, 2009Date of Patent: September 25, 2012Assignee: Shell Oil CompanyInventors: Mark Lawrence Brewer, Felix Balthasar, Karsten Wilbrand
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Publication number: 20120082829Abstract: A toner including a petroleum wax, wherein the petroleum wax comprises a paraffin wax having a polarity.Type: ApplicationFiled: September 20, 2011Publication date: April 5, 2012Inventors: Masato Iio, Kentarou Matsumoto, Shinya Kobayashi, Akio Tsujita, Katsuhiro Shinohara, Tadashi Kasai, Masakazu Terao, Tsuyoshi Asami
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Patent number: 7951759Abstract: The present invention relates to transportable product for the transportation of paraffinic wax and methods of transporting using this transportable product. The transportable product comprises 90 to 20 weight % of a liquid comprising >50 weight % alcohol and having a true vapor pressure of ?14.7 psia when measured at 20° C., and 10 to 80 weight % of wax particles, wherein the wax particles comprise ?75 weight % of wax particles larger than 0.1 mm. The transportable product and methods of transporting according to the present invention are able to accommodate a relatively high weight % of paraffinic wax particles in the transportable product while avoiding interparticle adhesion and clumping by ensuring that the wax particles are not too small and the amount of small wax particles is not excessive.Type: GrantFiled: December 29, 2008Date of Patent: May 31, 2011Assignee: Chevron U.S.A. Inc.Inventors: Gunther H. Dieckmann, Mark R. Buetzow, Dennis J. O'Rear
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Patent number: 7875166Abstract: 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 to solid at room temperature and have a higher percentage of iso-paraffins than n-paraffins. Since they do not contain aromatic compounds they are particularly suitable for use in the pharmaceutical, cosmetic and food industries.Type: GrantFiled: May 31, 2002Date of Patent: January 25, 2011Assignees: Sasol Wax International AG, Sasol Wax GmbHInventors: Michael Matthäi, Günter Hildebrand, Helmuth Schulze-Trautmann, Thorsten Butz
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Patent number: 7862893Abstract: A granular solid wax particle, comprising a) a highly paraffinic wax having a T10 boiling point less than 427° C. and comprising at least 40 weight percent n-paraffins, and b) an inorganic powder coating on the wax particle. Also, a process for making a fuel or a base oil, comprising transporting the granular solid wax particles in a transport vessel to a distant location where the granular solid wax particles are processed into the fuel or the base oil.Type: GrantFiled: December 11, 2008Date of Patent: January 4, 2011Assignee: Chevron U.S.A., Inc.Inventors: Dennis J. O'Rear, Gunther H. Dieckmann
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Patent number: 7754066Abstract: 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. Also, a method comprising: a) selecting a Fischer-Tropsch wax having a broad boiling range, b) powder coating the wax, and c) transporting and d) hydroprocessing the wax. Also, a method comprising forming inorganic powder coated granular solid wax particles that withstand heavy loads without clumping or sticking together from highly paraffinic wax, wherein the amount of powder is between 0.1 and 5 wt %, transporting, and hydroprocessing the solid wax particles.Type: GrantFiled: February 13, 2008Date of Patent: July 13, 2010Assignee: Chevron U.S.A. IncInventors: Gunther H. Dieckmann, Dennis J. O'Rear
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Patent number: 7754065Abstract: 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.Type: GrantFiled: February 13, 2008Date of Patent: July 13, 2010Assignee: Chevron U.S.A. Inc.Inventors: Gunther H. Dieckmann, Dennis J. O'Rear
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Patent number: 7727378Abstract: A process to prepare a waxy raffinate product by performing the following steps: (a) subjecting a Fischer-Tropsch derived product having a weight ratio of compounds boiling above 540° C. and compounds boiling between 370 and 540° C. of greater than 2 to a hydroconversion step and (b) fractionating the effluent of step (a) to obtain products boiling in the fuels range and a waxy raffinate product boiling between 350 and 600° C.Type: GrantFiled: July 2, 2004Date of Patent: June 1, 2010Assignee: Shell Oil CompanyInventors: Jan Lodewijk Maria Dierickx, Arend Hoek, Lip Piang Kueh
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Patent number: 7709425Abstract: An oxidized olefin wax useful as a pour point depressant for hydrocarbon compositions and/or additive to reduce the wax particle size of wax precipitates in hydrocarbon compositions is described. Method for reducing the pour point and/or wax particle size of hydrocarbon composition with an oxidized olefin wax are described.Type: GrantFiled: October 27, 2005Date of Patent: May 4, 2010Assignee: Chevron Phillips Chemical Company LPInventors: Eduardo J Baralt, Hu Yang
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Patent number: 7686939Abstract: Embodiments include a fractionated and/or distilled wax having from about 30 to about 64 carbon units, a degree of crystallinity as calculated by heat of melting and as measured by DSC of from about 55 to about 100, a Mw is from about 500 to about 800, and a polydispersity of from about 1 to about 1.05.Type: GrantFiled: November 14, 2005Date of Patent: March 30, 2010Assignee: Xerox CorporationInventors: Raj D. Patel, David J. Sanders, T Hwee Ng, Stephan V. Drappel, Sandra J. Gardner, Sonja Hadzidedic, Louis V. Isganitis, Timothy L. Lincoln, Kevin F. Marcell
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Patent number: 7662272Abstract: Embodiments include a distilled wax having a crystallinity of from about 55 to about 100 percent, wherein the degree of crystallinity is calculated using the following formulas: [Heat of enthalpy (Hm) J/g/294 J/g]×100=degree of crystallinity (Xc); [Heat of recrystallization (Hrc) J/g/294 J/g]×100=degree of crystallinity (Xc); and Sc/(Sc+Sa)]×100%, wherein Sc is a diffraction peak area of a crystalline component of the wax and the Sa is a diffraction peak area of an amorphous component of the wax; and wherein the Mp, Mn and Mw of the wax are all within the range of from about 500 to about 800, and wherein the wax has a polydispersity of from about 1 to about 1.05.Type: GrantFiled: November 14, 2005Date of Patent: February 16, 2010Assignee: Xerox CorporationInventors: Raj D. Patel, David J. Sanders, T Hwee Ng, Stephan V. Drappel, Sandra J. Gardner, Sonja Hadzidedic, Timothy L. Lincoln, Kevin F. Marcell, Louis V. Isganitis
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Patent number: 7642095Abstract: A process for producing lube basestocks involving solvent dewaxing a waxy feed to produce at least a partially dewaxed lube oil boiling range stream and then hydrodewaxing the partially dewaxed lube oil boiling range stream to produce a lube basestock.Type: GrantFiled: November 14, 2005Date of Patent: January 5, 2010Assignee: ExxonMobil Research and Engineering CompanyInventors: Frank Cheng-Yu Wang, Lei Zhang
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Patent number: 7641786Abstract: The invention relates to a method for analyzing a lubricating oil for low temperature properties. The method utilizes 2-dimensional gas chromatography (2D GC) to determine the amounts of paraffins and isoparaffins in the oil. In particular, the method analyzes for a particular isoparaffin fraction which is correlated to low temperature performance. The compositional information thus obtained is correlated with formulated oil Mini Rotary Viscometer (MRV) properties.Type: GrantFiled: November 14, 2005Date of Patent: January 5, 2010Assignee: ExxonMobil Research and Engineering CompanyInventors: Frank Cheng-Yu Wang, Lei Zhang
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Patent number: 7622031Abstract: A method for producing an oxidized wax comprising (a) providing a uniform high molecular weight polyolefin resin feedstock having an average particle size smaller than about 30 mesh and a standard deviation in particle size of not greater than about 125 ?m; and (b) oxidizing the resin particles in their solid state to produce a wax having a predetermined acid number.Type: GrantFiled: January 15, 2007Date of Patent: November 24, 2009Assignee: Honeywell International IncInventors: Manfred K. Seven, Mark R. Wheeler
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Patent number: 7501019Abstract: A granular solid wax particle comprising a highly paraffinic wax having a low T10 boiling point less than 427° C. and an inorganic powder coating; optionally with a layer of higher boiling wax over the highly paraffinic wax having a low T10 boiling point, and an inorganic powder coating over the layer of higher boiling wax. In separate embodiments, a highly paraffinic wax having a T10 boiling point less than 427° C. or a highly paraffinic wax having a needle penetration greater than 3 mm/10 at 25° C. is coated with a powder that adsorbs the wax without being encapsulated by the wax in a hot drop wax test. Also, a process for transporting highly paraffinic wax having a T10 boiling point less than 427° C. as granular solid wax particles. And, a method of making base oil from granular solid wax particles transported from a distant location.Type: GrantFiled: March 31, 2005Date of Patent: March 10, 2009Assignee: Chevron U.S.A., Inc.Inventors: Gunther H. Dieckmann, Dennis J. O'Rear
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Patent number: 7488411Abstract: The present invention relates to transportable product for the transportation of paraffinic wax and methods of transporting using this transportable product. The transportable product comprises 90 to 20 weight % of a liquid comprising ?50 weight % water and having a pH of >5 and a true vapor pressure of ?14.7 psia when measured at 20° C., and 10 to 80 weight % of wax particles, wherein the wax particles comprise ?75 weight % of wax particles larger than 0.1 mm. The transportable product and methods of transporting according to the present invention are able to accommodate a relatively high weight % of paraffinic wax particles in the transportable product while avoiding interparticle adhesion and clumping by ensuring that the wax particles are not too small and the amount of small wax particles is not excessive.Type: GrantFiled: September 28, 2004Date of Patent: February 10, 2009Assignee: Chevron U.S.A. Inc.Inventors: Gunther H. Dieckmann, Mark R. Buetzow, Dennis J. O'Rear
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Patent number: 7473347Abstract: Process to prepare two or more base oil grades, which base oil grades have different kinematic viscositys at 100° C. from a waxy paraffinic Fischer-Tropsch product having a content of non-cyclic iso-paraffins of more than 70 wt % by: (a) obtaining from the waxy paraffinic Fischer-Tropsch product a distillate fraction having a viscosity corresponding to one of the desired base oil products; (b) performing a catalytic dewaxing step using the distillate fraction obtained in step (a) as feed; (c) separating the lower boiling compounds from the dewaxed product obtained in step (b) in order to obtain the desired base oil; and (d) repeating steps (a)–(c) for each base oil.Type: GrantFiled: March 5, 2002Date of Patent: January 6, 2009Assignee: Shell Oil CompanyInventor: Gilbert Robert Bernard Germaine
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Publication number: 20080210596Abstract: The disclosed invention relates to a process and apparatus for converting natural gas to higher molecular weight hydrocarbons. The process includes steam reforming to form synthesis gas followed by a Fischer-Tropsch reaction to convert the synthesis gas to the high molecular weight hydrocarbons. The reforming and Fischer-Tropsch reactions are conducted in microchannel reactors. The higher molecular weight hydrocarbons may be further treated to form hydrocarbon products such as middle distillate fuels, lubricating oils, and the like. The apparatus includes vessels containing SMR microchannel reactors and Fischer-Tropsch microchannel reactors. A composition comprising a mixture of olefins and paraffins is disclosed.Type: ApplicationFiled: January 18, 2008Publication date: September 4, 2008Inventors: Robert Dwayne Litt, Wayne W. Simmons
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Patent number: 7037955Abstract: Additives and methods for reducing or eliminating odor in oil based media. The additives comprise an essential oil, an essential oil component, or mixtures thereof.Type: GrantFiled: May 2, 2003Date of Patent: May 2, 2006Assignee: Odor Managements, Inc.Inventors: Charles Timcik, John Fergeus
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Patent number: 6713438Abstract: High performance engine oils and other liquid lubricants comprise a liquid lubricant basestock of low viscosity from 1.5 to 12 cSt (100C) with two dissolved polymer components of differing molecular weights. The basestock is preferably a single PAO or blend of PAOs with a co-basestock component which is preferably an ester or an alkylated aromatic of comparable viscosity. The lower molecular weight polymer is highly viscoelastic in character and is preferably an HVI-PAO; this component in the lubricant which provides unexpectedly high film thickness and unexpectedly good wear protection under conditions where the second, higher molecular weight polymer may lose some or all of its thickening power. The use of the highly viscoelastic low molecular weight polymer in combination with the higher molecular weight thickener enables the production of very widely cross-graded engine oils, especially oils with a low temperature grading of 0W or better.Type: GrantFiled: March 24, 1999Date of Patent: March 30, 2004Assignee: Mobil Oil CorporationInventors: David J. Baillargeon, Raymond J. Bergstra, Andrew Jackson, William L. Maxwell, G. James Johnston, Robert A. Pache
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Patent number: 6695965Abstract: 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 and softer mildly isomerized Fischer-Tropsch wax in a blending process which allows the artisan to adjust the hardness of a wax product to within desired ranges. The process involves passing a Fischer-Tropsch wax over a hydroisomerization catalyst under predetermined conditions including relatively mild temperatures such that chemical conversions (e.g., hydrogenation and mild isomerization) take place while less than 10% boiling point conversion (hydrocracking) occurs, thus preserving overall isomerized wax yield.Type: GrantFiled: April 4, 2000Date of Patent: February 24, 2004Assignee: ExxonMobil Research and Engineering CompanyInventors: Robert J. Wittenbrink, Daniel Francis Ryan
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Patent number: 6676827Abstract: A method for producing a lube basestock from a waxy feed is disclosed in which a feed containing to 50 wt % or more of wax is hydrotreated and stripped to lower the nitrogen and sulfur content of the feed. The feed is then hydroisomerized under conditions to 370° C. hydrocatalytically dewaxed with a catalyst comprising a mixture of a catalytically active metal on a zeolite dewaxing catalyst and an amorphous catalyst, or alternatively is solvent dewaxed and then hydrocatalytically dewaxed with the just described catalyst.Type: GrantFiled: January 15, 2003Date of Patent: January 13, 2004Assignee: ExxonMobil Research and Engineering CompanyInventors: William John Murphy, Ian Alfred Cody, Bernard George Silbernagel
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Publication number: 20030226785Abstract: A method for producing a lube basestock from a waxy feed is disclosed in which a feed containing to 50 wt % or more of wax is hydrotreated and stripped to lower the nitrogen and sulfur content of the feed. The feed is then hydroisomerized under conditions to 370° C. hydrocatalytically dewaxed with a catalyst comprising a mixture of a catalytically active metal on a zeolite dewaxing catalyst and an amorphous catalyst, or alternatively is solvent dewaxed and then hydrocatalytically dewaxed with the just described catalyst.Type: ApplicationFiled: January 15, 2003Publication date: December 11, 2003Inventors: William John Murphy, Ian Alfred Cody, Bernard George Silbernagel
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Patent number: 6569235Abstract: A method is disclosed for constructing, verifying, and maintaining underground vaults that isolate and contain radioactive burial sites. The method employs a buoyant lift technique to isolate a block of soil containing the contaminates from the surrounding soil. An impermeable synthetic liner is embedded in the vault to enhance the integrity of the system. The integrity of the vault is monitored by a system of sensors placed both inside and outside of the sealed vault. The method eliminates the need to excavate or drill in the contaminated areas.Type: GrantFiled: August 27, 2001Date of Patent: May 27, 2003Inventor: Ernest E. Carter, Jr.
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Patent number: 6133490Abstract: A dispersant for pigments for aromatic polymers, which is superior not only in the ability of dispersing pigments in aromatic polymers but also in attaining high transparency and stability of the resulting color, while avoiding grafting step and attaining a lower production cost. The dispersant for pigments for aromatic polymers comprises a wax composed of a random copolymer of ethylene with an aromatic vinyl compound, which has a content of structural unit derived from ethylene of 99-10% by weight and a content of structural unit derived form the aromatic vinyl compound of 1-90% by weight and exhibiting an intrinsic viscosity of 0.04-0.6 dl/g.Type: GrantFiled: September 29, 1998Date of Patent: October 17, 2000Assignee: Mitsui Chemicals Inc.Inventors: Hideo Toyoda, Hideki Sakai, Kenichi Morizono, Toshiyuki Tsutsui
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Patent number: 6059955Abstract: The present invention is directed to an easily biodegradable low viscosity, low Noack volatility lube oil material having a viscosity index (VI) in the range of about 110-145, >98% saturates useful as lube oil basestock, automatic transmission fluid (ATF) basestock or blending stock. The lube oil material is produced by the isomerization of a wax feed having a viscosity of from 4 to 10 cSt at 100.degree. C. and containing less than about 25% oil in wax.Type: GrantFiled: February 13, 1998Date of Patent: May 9, 2000Assignee: Exxon Research and Engineering Co.Inventors: Ian A. Cody, William J. Murphy, David Dumfries
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Patent number: 5904834Abstract: The present invention relates to the use of wax for food applications, which wax has a congealing point of more than 65.degree. C. and a Saybolt color of more than +25, which wax is obtainable by subjecting a wax prepared in a Fischer-Tropsch synthesis process to a hydrogenation treatment to prepare a hydrogenated wax containing less than 1.5% by weight of oxygenates, fractionating the hydrogenated wax to obtain a hydrogenated wax fraction having a desired congealing point, and subjecting the hydrogenated wax fraction to a hydrofinishing treatment. The present invention further relates a process for the preparation of a wax which comprises subjecting a wax prepared in a Fischer-Tropsch synthesis process to a hydrogenation treatment to prepare a hydrogenated wax containing less than 1.5% by weight of oxygenates, fractionating the hydrogenated wax to obtain a hydrogenated wax fraction having a desired congealing point, and subjecting the hydrogenated wax fraction to a hydrofinishing treatment.Type: GrantFiled: August 1, 1997Date of Patent: May 18, 1999Assignee: Shell Research LimitedInventors: Joachim Ansorge, Arend Hoek, Willem Pieter Leenhouts, Robert Anthony John Priston
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Patent number: 5817897Abstract: A wax-like substance mainly consisting of a saturated chain hydrocarbon, in which a weight ratio (C/H) of carbon and hydrogen is 5.839-6.018, a total weight % of the carbon and the hydrogen is 98.5%-100%, a number-average molecular weight (Mn) is 3.0.times.10.sup.3 -1.0.times.10.sup.4, a weight-average molecular weight (Mw) is 1.0.times.10.sup.4 -5.0.times.10.sup.4 and Mw/Mn is 1.0-5.0. In the case of using it for carving and casting, for example, wax-like substance can be repeatedly used, and has the excellent workability. Moreover, the wax-like substance provides easy dewaxing from a mold material. In other words, it provides convenient use. In addition, after a master model is made by processing the wax-like substance and covered with a mold material, it is dewaxed. Molten metal is poured into the mold material, and a shaped article is produced by cooling and solidifying the mold material where the molten metal has been poured.Type: GrantFiled: September 7, 1995Date of Patent: October 6, 1998Inventor: Nabhikhi Itou
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Patent number: 5695553Abstract: A composition suitable for use in making water-resistant gypsum products is provided. The composition is an aqueous emulsion comprising water, a paraffinic hydrocarbon wax, a Montan wax, an alkali metal or ammonium hydroxide in an amount sufficient to at least partially saponify the Montan wax, an emulsifier and a dispersant.Type: GrantFiled: August 9, 1996Date of Patent: December 9, 1997Assignee: Conoco Inc.Inventors: Thomas C. Claret, Wesley E. Church, Roy S. Hodgson
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Patent number: 5599660Abstract: A method and preparation for the storage and delivery of purified reagents is disclosed. In one aspect, the preparation comprises an amount of a first wax carrier, the first wax carrier having a first melting point, and an amount of a first reagent, wherein first reagent is a substantially purified preparation of at least one biological or chemical reagent. The first wax carrier and the first reagent are combined to form a solid first reagent portion. The solid mixture is combined with a second reagent portion comprised of at least one biological or chemical reagent in an inactive form.Type: GrantFiled: December 2, 1994Date of Patent: February 4, 1997Assignee: Pharmacia Biotech Inc.Inventors: Rama P. Ramanujam, Brent A. Burdick, Ulf D. Landegren, Pierre Sevigny
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Patent number: 5576197Abstract: The invention describes a polymerase chain reaction container and methods of using the same that greatly simplify and improve the polymerase chain reaction. Specifically, the invention describes a PCR container comprising a container suitable for PCR with wax attached to the inside surface of the container. The wax is positioned at or above an estimated meniscus position of a PCR mixture. The wax melts at PCR temperatures and covers the surface of the PCR mixture thereby prevents evaporation during thermal cycling. The invention is superior to current methods, in part, because it reduces preparation time, potential sources of contamination and adverse effects on PCR.Type: GrantFiled: April 7, 1995Date of Patent: November 19, 1996Assignee: Molecular Bio-ProductsInventor: Robert Arnold
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Patent number: 5437722Abstract: The water resistance of gypsum compositions, such as those used in gypsum wallboard, is improved by incorporating in the compositions an aqueous emulsion containing a paraffinic hydrocarbon having a melting point of 40.degree. to 80.degree. C., montan wax and polyvinyl alcohol.Type: GrantFiled: March 1, 1994Date of Patent: August 1, 1995Assignee: Bakor Inc.Inventor: Lionel Borenstein
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Patent number: 5374190Abstract: 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 other surfaces. The wax comprises petroleum-derived paraffins, microcrystalline waxes, and hydrocarbon resins. In an alternative embodiment, the wax craft product comprises a bendable extruded rod of wax having a coating which has adhesive properties. In this embodiment, the adhesive coating 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 other surfaces. As with the textured rod of wax, the wax comprises petroleum-derived paraffins, microcrystalline waxes, and hydrocarbon resins.Type: GrantFiled: April 1, 1993Date of Patent: December 20, 1994Assignee: The Chenille Kraft CompanyInventors: Paul E. Brokaw, Patrick W. Brown, John R. Nottingham
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Patent number: 5223122Abstract: 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 which is formed into flakes or pellets whose areas in contact with a solvent are large, bringing the raw material into contact with the solvent for dissolving the raw wax at temperatures lower than a melting point thereof, while increasing the temperature by degrees, and separating a solution containing extracted wax from the raw wax at each temperature so as to remove the solvent from the solution. The resulting wax products have a melting peak point within a range of 40.degree. C. to 130.degree. C., crystal melting heat of 100J/g or more, and a range of melting points of 40.degree. C. to 5.degree. C., when measured by the DSC.Type: GrantFiled: February 26, 1992Date of Patent: June 29, 1993Assignee: Chusei Oil Co., Ltd.Inventor: Yoshihisa Katayama
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Patent number: 4877456Abstract: The present invention relates to an antioxidant was for rubber having a capacity to prevent the rubber from aging over a whole range from lower to higher temperatures and also providing excellent appearance and quality for the rubber products.Type: GrantFiled: November 30, 1988Date of Patent: October 31, 1989Assignee: Nippon Seiro Company, LimitedInventors: Kaoru Chikamune, Manabu Tokuda, Kazuo Inoue, Kyoshi Utsunomiya, Yoshii Hitofude
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Patent number: 4855098Abstract: A candle composition consisting essentially of about 10 to 90 volume percent of a first paraffin wax with a melting point of 120.degree. to 125.degree. F. and having a maximum of 2 percent oil, about 10 to 90 volume percent of the second paraffin wax with a melting point of 125.degree. to 130.degree. F. and having a maximum of 0.2 percent oil, and about 0.1 volume percent of stretchability enhancer and a method of forming a candle therefrom. A method of forming a candle comprising submerging a plurality of wax pieces consisting essentially of about 10 to 90 volume % paraffin wax with a melting point of 120.degree. F. and having a maximum of 2.0% oil, about 10 to 90 volume % paraffin wax with a melting point of 125.degree. to 130.degree. F. and having a maximum of 0.2% oil and about 0.1 to 1.0 volume % of a stretchability enhancer in water having a temperature between about 100.degree. and 120.degree. F.Type: GrantFiled: December 16, 1987Date of Patent: August 8, 1989Inventor: Ted Taylor
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Patent number: 4639255Abstract: Engine deposits are controlled by dispensing an additive to fuel. In one aspect, the additive comprises paraffins. In another aspect, a solid form additive for dispensing fuel additive to fuel in solid form is provided by employing a structural agent which is soluble and dispersible in fuel to contain and provide dimensional stability to the additive.Type: GrantFiled: October 16, 1980Date of Patent: January 27, 1987Assignee: Phillips Petroleum CompanyInventors: Alexander D. Schuettenberg, James T. Gragson
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Patent number: RE36272Abstract: 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 other surfaces. The wax comprises petroleum-derived paraffins, microcrystalline waxes, and hydrocarbon resins. In an alternative embodiment, the wax craft product comprises a bendable extruded rod of wax having a coating which has adhesive properties. In this embodiment, the adhesive coating 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 other surfaces. As with the textured rod of wax, the wax comprises petroleum-derived paraffins, microcrystalline waxes, and hydrocarbon resins.Type: GrantFiled: November 7, 1995Date of Patent: August 17, 1999Assignee: The Chenille Kraft CompanyInventors: Paul E. Brokaw, Patrick W. Brown, John R. Nottingham