Coal Tar Or Pitch Containing Patents (Class 106/284)
  • Patent number: 10029945
    Abstract: An alkaline-activated binder system for fire concretes includes at least one mineral binder and a mineral activator which, in a mixture with water, form a curing geopolymer, where a combination of at least two magnesium components (Mg components) which give an alkaline reaction with water and react with the binder at different times to form a geopolymer is present as activator, where the magnesium components have a different reactivity in respect of atmospheric moisture and/or in respect of the binder. A dry fire concrete mix contains the binder system and the mix may be used in, for example, facilities in the steel industry.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: July 24, 2018
    Assignee: Refratechnik Holding GmbH
    Inventors: Jennifer Werz, Bertram Kesselheim, Darina Rudert, Kai Beimdiek
  • Patent number: 8268066
    Abstract: It has been unexpectedly found that the solvent extracted aromatic cut of heavy vacuum gas oil can be oxidized to produce an adhesive composition that has all the needed attributes of a self seal adhesive for asphalt roofing shingles. This self seal adhesive composition offers numerous benefits and advantages over conventional self seal adhesives for roofing applications. For instance, it does not require any volatile organic solvents and is accordingly environmentally friendly. Additionally, it does not contain any asphalt or polymers and will not phase separate and accordingly offers excellent long term stability.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: September 18, 2012
    Assignee: Building Materials Investment Corporation
    Inventor: William K. Longcor, IV
  • Patent number: 8182599
    Abstract: A configuration in which particles of pitch 2 having a softening point in the range of 70 to 200° C. and a diameter equal to or smaller than 30 ?m are held on the surfaces of particles of a refractory raw material 3 having a diameter equal to or smaller than 50 ?m is employed. This pitch-containing refractory raw material 1 can be used with the pitch being in a fine-particle form without any aggregation even after the long-term storage. Using it as a part of a raw material formulation allows the fine particles of pitch to be uniformly dispersed during the mixing or kneading process. The resulting carbon-containing refractory has an excellent corrosion resistance. It also provides suppressed increase in the Young's modulus while maintaining the level of strength, thereby being excellent in thermal spalling resistance even with the carbon content ratio being low.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: May 22, 2012
    Assignee: Krosaki Harima Corporation
    Inventors: Toshiyuki Hokii, Hiroyuki Fuchimoto, Toshihiro Suruga, Jyouki Yoshitomi, Keisuke Asano
  • Patent number: 7811373
    Abstract: Recycled tire rubber, either in the presence or the absence of carbonaceous waste solids such as those from petroleum refinery operations, is first subjected to a heat treatment to release volatile materials and then combined with a liquid asphalt composition to achieve an asphalt mastic that is storage stable and of uniform consistency.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: October 12, 2010
    Assignee: Sierra Process Systems, Inc.
    Inventors: John Eric Partanen, Stanley W. Ellis
  • Patent number: 7641729
    Abstract: A ball clay powder having a moisture content of less than 5% and at least about 25% of indigenous silica, said powder comprising a blend of at least two natural ball clays, wherein one of the ball clays is naturally silica rich and has at least about 40% indigenous silica.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: January 5, 2010
    Assignee: Unimin Corporation
    Inventors: Claud E. Westbrook, Russell J. Fish
  • Publication number: 20090044723
    Abstract: A configuration in which particles of pitch 2 having a softening point in the range of 70 to 200° C. and a diameter equal to or smaller than 30 ?m are held on the surfaces of particles of a refractory raw material 3 having a diameter equal to or smaller than 50 ?m is employed. This pitch-containing refractory raw material 1 can be used with the pitch being in a fine-particle form without any aggregation even after the long-term storage. Using it as a part of a raw material formulation allows the fine particles of pitch to be uniformly dispersed during the mixing or kneading process. The resulting carbon-containing refractory has an excellent corrosion resistance. It also provides suppressed increase in the Young's modulus while maintaining the level of strength, thereby being excellent in thermal spalling resistance even with the carbon content ratio being low.
    Type: Application
    Filed: July 21, 2006
    Publication date: February 19, 2009
    Inventors: Toshiyuki Hokii, Hiroyuki Fuchimoto, Toshihiro Suruga, Jyouki Yoshitomi, Keisuke Asano
  • Patent number: 7066997
    Abstract: A method of making the saturated aircraft brake preform using a coal tar pitch having a softening point in the range of about 160° C. to 240° C. Also, a product having natural rubber in the formulation and the method of making the product using a coal tar pitch having a softening point in the range of about 140° C. to 200° C. A mesophase pitch is formed from quinoline insoluble free coal tar pitch distillate from a high efficiency evaporative distillation process.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: June 27, 2006
    Assignee: Koppers Delaware, Inc.
    Inventors: Thomas A. Golubic, Kenneth C. Krupinski, William E. Saver, David R. Snyder, Robert H. Wombles
  • Patent number: 7025822
    Abstract: An asphalt mastic is prepared by combining comminuted waste solids from a petroleum refinery with liquid asphalt that is either a hot asphalt or an asphalt emulsion. The resulting composition is similar in performance to Trinidad Lake Asphalt and is useful either on its own or as a binder for asphalt-aggregate compositions, in both cases optionally in combination with polymeric additives that are common in the asphalt industry.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: April 11, 2006
    Assignee: Sierra Process Systems, Inc.
    Inventors: John Eric Partanen, Stanley W. Ellis
  • Patent number: 6790395
    Abstract: A method for producing a thermoplastic filler for eliminating surface damage to concrete or asphalt surface is disclosed which includes mixing stone chips, sand, a powdered material and a bituminous binding agent to a homogenous mixture which is in constant motion at a temperature of between about 180° C.-2400° C., with a coolant being added subsequently to the mixture in a rapid manner thereby converting the mixture into a non-cohesive granulate of small pellets due to the high surface tension of the various constituents, and wherein the granulate can be heated to convert it to a free-flowing or spreadable filler having strong adhesive properties.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: September 14, 2004
    Inventors: Rainer Hart, Darco Kunsic
  • Publication number: 20040168612
    Abstract: A method of making a high softening point coal tar pitch using high efficiency evaporative distillation, as well as the uses and applications of such pitch. According to the method, a feed coal tar pitch having a softening point in the range of 70° C. to 160° C. is fed into a processing vessel wherein the processing vessel is heated to a temperature in the range of 300° C. to 450° C. and wherein a pressure inside the processing vessel is in the range of 5 Torr or less. An output coal tar pitch is withdrawn from the processing vessel. The output coal tar pitch has a softening point in the range of 140° C. to 300° C. and has less than 5% mesophase.
    Type: Application
    Filed: March 25, 2004
    Publication date: September 2, 2004
    Inventor: William E Saver
  • Publication number: 20030211313
    Abstract: A road repairing material of the invention has a very excellent adhesive property and adherent property to an existing paved road surface and aggregate, and even if several years has passed since the repair, displacement, peeling, cracking and the like do not occur in the repaired spot. Besides, even if the material is exposed to air after opening of a bag, it does not change its quality and is not hardened for a long period of 3 to 5 years, and accordingly, the quantity of the material used can be selected taking a repair spot into consideration, and the remainder material can be sufficiently used for next repair work and is not required to be discarded as waste material, and therefore, the very economical road repairing material can be provided.
    Type: Application
    Filed: May 6, 2003
    Publication date: November 13, 2003
    Inventor: Isao Tasaki
  • Patent number: 6602337
    Abstract: A process for manufacturing a non-toxic environmentally friendly target comprising petroleum pitch and filler includes the steps of pre-heating the petroleum pitch binder to at least 450° F., mixing the petroleum pitch binder with limestone filler so that toxins in the petroleum pitch binder are neutralized, and setting the mixture into target molds. The petroleum pitch binder and filler are preferably mixed for at least 2 hours at a temperature of at least 400° F.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: August 5, 2003
    Assignee: Lawry Shooting Sports Inc.
    Inventor: Bob Lawry
  • Patent number: 6503306
    Abstract: Composition for impregnating porous materials, in which the composition contains at lease one component having preservative properties or which release a component having preservative properties on heating, the composition comprising an emulsion of water and oil containing a primary surfactant and an amphoteric additive, the pH of the emulsion being equal or approximately equal to the iso-electric point of the amphoteric additive. The compositions of the invention are particularly useful in the preservation of timber.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: January 7, 2003
    Assignee: Monash University Act 1958
    Inventor: John Bernard Watkins
  • Patent number: 6348089
    Abstract: Compositions for the protective treatment of wood against rot and attack by insects which comprise at least the following components: a) 10-90 parts of coal-tar oil b) 2-20 parts of a biocidally active quaternary ammonium compound c) 10-90 parts of water. are described. The compositions according to the invention are easily preparable stable emulsions which are distinguished, inter alia, by good penetrability, strongly reduced odour of the treated woods, absence of annoying tar oil enrichments at the surface and strongly reduced “bleeding” of the treated wood at hot temperatures, considerably enhanced activity in spite of a lower coal-tar oil content and reduced toxicity compared to pure coal-tar oil.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: February 19, 2002
    Assignees: Lonza AG, Impragnierwerk Wulknitz GmbH
    Inventors: Hans-Norbert Marx, Tilo Vogel, Oliver Arlt, Florian Lichtenberg
  • Patent number: 6340385
    Abstract: A clay-containing mixture of dry solids to be used in forming a moisture-resistant gel, and a method for directly forming a moisture-resistant gel on a surface to be treated, using such a mixture. The present invention furthermore relates to the use of such a mixture.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: January 22, 2002
    Assignee: Trisoplast International B.V.
    Inventor: Jacobus Cornelis Wammes
  • Patent number: 6267809
    Abstract: A low softening point pitch is disclosed. A high melting point (100° C.+) pitch is blended with an aromatic rich liquid hydrocarbon stream to form a pourable pitch mixture having a softening point of 30-50° C. which can be used as a partial or complete replacement for coal tar pitch used in driveway sealer and other sealer and coating applications. Driveway sealer (an emulsion of clay, water and binder) made with this pitch has enhanced durability. The low softening point pitch, even when blended with coal tar pitch, is phase stable on storage.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: July 31, 2001
    Assignee: Marathon Ashland Petroleum LLC
    Inventors: D. Chris Boyer, Patricia K. Doolin
  • Patent number: 6214081
    Abstract: The hot repair mix according to the present invention comprises bisphenol as an auxiliary fluidizing agent in an amount of 1 to 20 weight parts and a material to form carbon bond in hot working process in an amount of 5 to 40 weight parts to 100 weight parts of a refractory material. It has satisfactory properties such as spreading property, hardenability, adhesive property, property of the finished portion in hot working process, and this leads to improvement of durability of the baking material. Moreover, there is no change over time such as solidification, sedimentation separation, etc. in summer season, and it can be easily transported and stored. Because of easy handling and good workability of this material, baking operation can be accomplished within short time, and it is very useful as a hot repair mix for repairing various types of refinery furnaces, molten metal containers, etc. in hot working process.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: April 10, 2001
    Assignee: Shinagawa Refractories Co., Ltd.
    Inventors: Hiroshi Takenaka, Shuzo Horita, Toshihiko Akizuki, Yoshiaki Osaki
  • Patent number: 6120593
    Abstract: The hot repair mix according to the present invention comprises p-alkylphenol as an auxiliary fluidizing agent in an amount of 1 to 20 weight parts and a material to form carbon bond in hot working process in an amount of 5 to 40 weight parts to 100 weight parts of a refractory material. It has satisfactory properties such as spreading property, hardenability, adhesive property, property of the finished portion in hot working process, and this leads to improvement of durability of the baking material. Moreover, there is no change over time such as solidification, sedimentation separation, etc. in summer season, and it can be easily transported and stored. Because of easy handling and good workability of this material, baking operation can be accomplished within short time, and it is very useful as a hot repair mix for repairing various types of refinery furnaces, molten metal containers, etc. in hot working process.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: September 19, 2000
    Assignee: Shinagawa Refractories Co., Ltd.
    Inventors: Hiroshi Takenaka, Shuzo Horita, Toshihiko Akizuki, Yoshiaki Osaki
  • Patent number: 6045608
    Abstract: An improved process for making asphalt involves incorporating tar sands into a hot asphalt mix process and modifying the process. The improved process involves using a heated asphalt counter-flow drum mixer to admix asphaltic cement, coarse aggregate, and fine aggregate. During this mixing process, the admixture is heated to produce the asphaltic concrete. In the improved process from about 20 to about 80 percent tar sand is mixed with from about 80 to about 20 percent aggregate and from about 1 to less than about 5 percent liquid asphalt cement in a drum mixer to form an admixture, heating the admixture to a first elevated temperature (e.g., 250.degree. and 400.degree. F.) for a set period of time (e.g., 40 to about 90 seconds); and discharging the heated admixture at a second elevated temperature (e.g., from about 150.degree. to about 350.degree. F.) to produce asphaltic concrete.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: April 4, 2000
    Assignee: Ned B. Mitchell, Inc.
    Inventors: Gil N. Mitchell, Ned B. Mitchell
  • Patent number: 5743950
    Abstract: The present invention provides a process for preparing a dense-graded asphalt composition which comprises adding a hard binder component to a mixture of a soft binder component and aggregate at a temperature of less than 140.degree. C.
    Type: Grant
    Filed: November 25, 1996
    Date of Patent: April 28, 1998
    Assignee: Shell Oil Company
    Inventors: Henricus Engelbertus Johannes Hendriks, Dirk Adriaan Stoker
  • Patent number: 5611853
    Abstract: A composition of matter comprising naturally-occurring humic allophane soil or Ando soil as an essential ingredient admixed with a binder material, said composition is useful in preparation of solid media effective as deodorant, absorbent, adsorbent and the like for treating fluids, in particular contaminated water and malodor air.
    Type: Grant
    Filed: September 6, 1995
    Date of Patent: March 18, 1997
    Assignees: Haruo Morimoto, Katusi Maeno, Takahiro Yamada
    Inventor: Haruo Morimoto
  • Patent number: 5460383
    Abstract: An article intended to be degraded when exposed to the environment is made from a brittle resinous or synthetic resin material incorporating moisture swellable particles as a filler, whereby exposure of the article to water induces fragmentation. In particular, hydrodegradable "clay pigeons" for shot-gun shooting may be made from a mixture of pitch, powdered limestone or chalk and dry potato starch. Exposure of such a "clay pigeon" or fragments thereof, to water causes swelling of the starch particles and consequent fragmentation of material into, eventually, a fine sludge which is ultimately absorbed into the ground.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: October 24, 1995
    Assignee: Epron Industries Limited
    Inventor: Gerald J. L. Griffin
  • Patent number: 5362316
    Abstract: A cut-back composition useful for ambient temperature application to substrates comprising a resinous or residue-based component such as asphalt, polymer modified asphalt, coal tar, natural rubber or elastomers and a terpene solvent.
    Type: Grant
    Filed: February 5, 1993
    Date of Patent: November 8, 1994
    Assignee: Imperbel America Corporation
    Inventor: Richard W. Paradise
  • Patent number: 5324352
    Abstract: A non-aqueous refractory maintenance mix made from 100% deadburned magnesite or other basic aggregate plus additions of coal tar pitch and a paraffin distillate oil. This mix is especially useful for the repair and maintenance of BOF, EAF, EBT, and OBT tapholes.
    Type: Grant
    Filed: September 9, 1991
    Date of Patent: June 28, 1994
    Assignee: Indresco Inc.
    Inventors: Gustav O. Hughes, Vince Nudo, Nicholas L. Pallotta
  • Patent number: 5076845
    Abstract: The present invention discloses a process for producing a formed carbon products which comprises the steps of mixing a pitch or a pitch precursor and at least one kind of polymer becoming compatible with the pitch or the pitch precursor by heat-treating and having an aromatic ring and at least one sulfur, oxygen or nitrogen atom in its repeating unit; of heat-treating the mixture to convert it to a raw material pitch and thereafter of at least forming, infusibilizing and carbonizing and which succeeded to simplify a production apparatus and to reduce an energy comsumption by reducing an infusibilizing time without deteriorating physical properties of the carbon products.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: December 31, 1991
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Ikuo Seo, Yosinobu Murakami
  • Patent number: 5064472
    Abstract: A composition which comprises a solvent extract of peat or a pyrolysis product of peat or a montan wax and petroleum bitumen of the paving grade type.
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: November 12, 1991
    Assignee: Foster Wheeler USA Corporation
    Inventors: John A. G. Drake, Ian L. Jamieson
  • Patent number: 5013503
    Abstract: A process for continuous production of a carbonaceous paste in which at least one carbonaceous aggregate and a cokable binder are introduced continuously into a kneader having an upstream end, a downstream end, and a rotating shaft associated with kneading elements. During the kneading operation, the paste, is passed from the upstream end to the downstream end of the kneader and is heated in the upstream end of the kneader. Water is injected into the paste in the downstream end of the kneader, causing a reduction in temperature of the paste and vaporization of the water, which is subsequently discharged from an orifice in the kneader. The paste reduced in temperature to a shaping temperature is continuously discharged from the downstream end of the kneader.
    Type: Grant
    Filed: February 5, 1990
    Date of Patent: May 7, 1991
    Assignee: Aluminium Pechiney
    Inventors: Christian Jonville, Jean-Robert Nicollin
  • Patent number: 4959139
    Abstract: Binder pitch is prepared by combining a petroleum aromatic mineral oil thermal tar and super finely subdivided calcined premium coke particles. The petroleum aromatic mineral oil thermal tar is obtained by hydrotreating, thermally cracking and vacuum distilling an aromatic mineral oil. Additionally, the aromatic mineral oil thermal tar may be subjected to heat soaking.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: September 25, 1990
    Assignee: Conoco Inc.
    Inventors: Dave L. Blakeburn, II, Ta-Wei Fu, Keith M. Roussel
  • Patent number: 4931163
    Abstract: A carbon fluoride comprising carbon atoms and fluorine atoms and having a structure in which layers containing fluorinated condensed cyclohexane rings are stacked to form a packing structure, the atomic ratio of fluorine to carbon atoms being 0.5 to 1.8, the carbon fluoride exhibiting a powder X-ray diffraction pattern in which there are peaks respectively at about 13.degree. (2.theta.) and at about 40.degree. (2.theta.) and no peak on the low side of diffraction angle relative to 13.degree. (2.theta.) and exhibiting a spectrum of electron spectroscopy for chemical analysis in which there are peaks respectively due to a monofluorocarbon group and due to a difluorocarbon group, the intensity ratio of the peak due to the difluorocarbon group to the peak due to the monofluorocarbon group being 0.15 to 1.5. The carbon fluoride has a unique property that it is capable of forming a film by vacuum deposition. The carbon fluoride may be produced by the direct fluorination of a pitch or meso-carbon microbeads.
    Type: Grant
    Filed: May 25, 1988
    Date of Patent: June 5, 1990
    Assignee: Osaka Gas Co, Ltd.
    Inventors: Nobuatsu Watanabe, Hidekazu Tohara, Yuji Matsumura, Hiroyuki Fujimoto
  • Patent number: 4927564
    Abstract: The invention concerns a method for conditioning in a thermosetting resin a quantity of waste stored in water.According to the invention, a liquid hardening agent, immiscible with water and having a density greater than that of the water, is used in order to harden the resin; this hardening agent is then mixed with the waste stored in the water and then the waste is left to decant in the hardening agent; then the water present above the decanted waste transferred into the liquid hardening agent is extracted and the waste transferred into the liquid hardening agent is mixed with the epoxy resin so as to obtain a solid block.In particular, the waste may be ion exchanger resins. Adding of the hardening agent to the waste stored in the water makes it possible to limit a temperature rise during hardining and to obtain solid products having an improved density.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: May 22, 1990
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Andre Barlou, Alexandre Beltritti, Patrick Gramondi, Hugues Vidal
  • Patent number: 4925494
    Abstract: The invention features an additive for a mastic coating comprising a cut-back asphaltic base material used in roof and construction applications. The additive comprising sodium bicarbonate in a range by weight of 1 part per 2-8 parts of the cut-back, asphaltic-type base material, has the dual purpose of accelerating the curing time and improving flame retardancy of the mastic coating.
    Type: Grant
    Filed: November 28, 1988
    Date of Patent: May 15, 1990
    Inventor: John P. Hageman
  • Patent number: 4904305
    Abstract: A novel asphaltic composition consisting of from about 2% to about 10% w/w of a hydrocracking residue which is the distillation residue obtained from a hydrocracking process of heavy crude oil in admixture with from about 98% to about 90% w/w of a conventional asphalt. These asphaltic compositions are especially useful when mixed with mineral aggregate to provide road mixes which lead to improved road construction or road paving.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: February 27, 1990
    Assignee: Nova Husky Research Corporation
    Inventors: Ludo Zanzotto, Albert J. Faber, Dennis P. Foley, Royston B. Jeffries, R. David Watson
  • Patent number: 4844740
    Abstract: A binder system for use in the production of graphite electrodes comprises pitch and a minor proportion of a polynitro-substituted aromatic compound containing an electron releasing substituent. A pitch/2,4-dinitroaniline blend results in graphite electrodes having a 14 percent improvement in coking value and a 52 percent improvement in flexural strength.
    Type: Grant
    Filed: April 14, 1987
    Date of Patent: July 4, 1989
    Assignee: Union Carbide Corporation
    Inventor: Charles C. Chiu
  • Patent number: 4822425
    Abstract: The invention relates to an aggregate stabilizing emulsion comprising pitch, rosin, an emulsifying agent and water. The invention further relates to a method of stabilizing aggregate including a material produced from the aggregate which is pliable, weight supporting, freeze resistant, water impermeable and repairable and useful for paving, patching or sealing roadways, driveways and the like.
    Type: Grant
    Filed: March 19, 1987
    Date of Patent: April 18, 1989
    Inventor: Richard M. Burch
  • Patent number: 4793912
    Abstract: A process for producing an optically anisotropic pitch for use in the production of high performance carbon fibers, wherein a compound represented by the formula (1) as a raw starting material is mixed with one of heavy oils and subjected to thermal modification: ##STR1## wherein m is an integer of 2 or more; R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.10 each represents a hydrogen atom, a methyl group or an ethyl group; and R.sub.5 represents a hydrogen atom or a methyl group. The pitch has a softening point which can be set at discretion and excellent molecular orientation.
    Type: Grant
    Filed: June 2, 1987
    Date of Patent: December 27, 1988
    Assignee: Mitsubishi Oil Co., Ltd.
    Inventors: Kazuhito Tate, Hajime Yoshida, Teruhiko Sasaki
  • Patent number: 4764305
    Abstract: The invention relates to a process for the conditioning of radioactive or toxic waste in epoxy resins and a polymerizable mixture with two liquid constituents usable in this process.This process consists of incorporating the waste into a polymerizable mixture incorporating at least one epoxy resin, pitch and at least one epoxy resin hardener and allowing the thus obtained mixture to harden.Generally the mixture comprises at least 50% by pitch weight and can be used for treating radioactive waste constituted by large objects and organic liquids.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: August 16, 1988
    Assignee: Commissariat a l'Energie Atomique
    Inventor: Christian de Tassigny
  • Patent number: 4762566
    Abstract: A binder which comprises pitch and the condensation product of (A) a ketone or dione selected from the group consisting of C.sub.3 to C.sub.13 aliphatic linear, branched or cyclic ketones and diones having at least one active hydrogen on each carbon atom adjacent to a ##STR1## group, compounds of the formula: ##STR2## wherein a and b are integers having a values of 0 to 6, and the C.sub.1 to C.sub.4 alkyl substituted derivatives thereof; and (B) at least one compound selected from the group consisting of C.sub.5 to C.sub.11 aldehydes, said aldehydes having an aromatic ring containing 4 to 6 carbon atoms and 0 to 1 oxygen atoms, wherein said condensation product has a Heat of Reaction Value of less than about 155 cal/g. Said binders being useful in the production of graphite electrodes having superior physical and electrical properties.
    Type: Grant
    Filed: December 5, 1985
    Date of Patent: August 9, 1988
    Assignee: Union Carbide Corporation
    Inventor: Ronald A. Greinke
  • Patent number: 4744882
    Abstract: A simpler and new process for the polycondensation of a sulfonated coal tar fraction comprising: sulfonating a coal tar fraction having a distillation range of 200.degree. to 240.degree. at normal pressure, with an excess of 20-30% mole of sulfuric acid, as opposed to 105% in the prior art, for 4-8 hours at a temperature of 160.degree. C..+-.10.degree. C. under reflux. The product is diluted with water to render it fluid at about 80.degree. C. and molar ratio of formaldehyde per mole of the sulfonated coal tar fraction is then added gradually at a temperature of about 85.degree. C..+-.5.degree. C., then gradually heated for about 1 to 4 hours at 100.degree. to 106.degree. C., and then further raised to 106.degree. C.-120.degree. C. for 2 to 4 hours. The product is then cooled and neutralized. With this process, new polycondensates with improved properties are produced. The polycondensation including neutralization is completed within 16 hours from the time the formaldehyde is added.
    Type: Grant
    Filed: January 2, 1987
    Date of Patent: May 17, 1988
    Assignee: Domtar Inc
    Inventors: Samuel Cukier, Marvin D. Camp, Jr.
  • Patent number: 4715897
    Abstract: Benzenepolycarboxylic acid esters, preferably phthalate or isophthalate acid esters are used as plasticizers in carbon/pitch mixes used in the production of extruded carbon and graphite electrodes.
    Type: Grant
    Filed: May 13, 1986
    Date of Patent: December 29, 1987
    Assignee: Union Carbide Corporation
    Inventors: James A. Tallon, Richard T. Lewis
  • Patent number: 4683005
    Abstract: The present invention relates to a paving grade asphalt composition which comprises a blend of (a) a petroleum pitch obtained as a residue in the hydrocracking of hydrocarbon oils and (b) as a diluent therefor an unprocessed distillation residue having a minimum initial boiling point of at least 200.degree. C. obtained from bitumen from tar sands, or heavy oils or light oil from pure or mixed petroleum crude oils.
    Type: Grant
    Filed: April 8, 1986
    Date of Patent: July 28, 1987
    Assignees: Mines and Resources Canada, Petro Canada Inc.
    Inventor: Marc-Andne Poirier
  • Patent number: 4639307
    Abstract: Disclosed is a one-step method of producing an industrial asphalt from a bituminous material which comprises mixing together without air-blowing:(a) a feed material comprising a bituminous material having a viscosity of at least 50 centistokes at 350 degrees Fahrenheit and wherein the feed petroleum residuum forms a single phase when mixed with 5 percent ferric chloride; and(b) from about 0.1 to 20.0 percent by weight of ferric chloride, said mixing being done at a temperature in the range of 351 to 600 degrees Fahrenheit, whereby the softening point of the feed is substantially increased and the penetration is significantly decreased.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: January 27, 1987
    Assignee: Chevron Research Company
    Inventor: Judson E. Goodrich
  • Patent number: 4631088
    Abstract: A road asphalt composition having a penetration at 25.degree. C. in the range of 85 to 100 is made by blending together: (a) a pitch having an initial boiling point of at least 520.degree. C. obtained as a residue in the visbreaking of crude oil, and (b) a distillation residue having a penetration at 25.degree. C. in the range of 150 to 500 obtained in the distillation of crude oil.
    Type: Grant
    Filed: December 11, 1985
    Date of Patent: December 23, 1986
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of Energy, Mines and Resources
    Inventor: Marc-Andre Poirier
  • Patent number: 4617062
    Abstract: The present invention relates to a roofing grade asphalt composition which comprises a blend of (a) a petroleum pitch obtained as a residue in the hydrocracking of hydrocarbon oils and (b) as a diluent therefor preferably a paving grade asphalt cement of 150-200 penetration.
    Type: Grant
    Filed: May 14, 1985
    Date of Patent: October 14, 1986
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of Energy, Mines & Resources
    Inventor: Marc-Andre Poirier
  • Patent number: 4554024
    Abstract: A pitch fraction for impregnating a carbon fiber reinforcing structure which represents the portion of a pitch which is insoluble in cyclohexane and soluble in pyridine.Also provided is a carbon fiber-reinforced carbon-carbon composite made by impregnating a multidirectional carbon fiber reinforcing structure with the above-described pitch fraction, carbonizing the pitch and graphitizing the resulting structure.
    Type: Grant
    Filed: February 13, 1984
    Date of Patent: November 19, 1985
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: James E. Zimmer, Linda M. Salvador
  • Patent number: 4537635
    Abstract: A driveway sealer less affected by temperature extremes can be made from an oxidized coal tar distillation cut. The sealer incorporates a middle cut crude distillate which is oxidized to produce a product of desired viscosity. The sealer incorporating this oxidized middle cut is less affected by extremes in weather as compared to regular sealer tar. It has more consistent physical properties. A significant distinguishing characteristic derived from the use of this tar in a driveway sealer is the reduced odor of the resulting sealer. The oxidation (condensation) step is carried out at elevated temperature by sparging copious quantities of air rapidly into the tar at elevated temperatures of the order of about 300.degree. F. to 800.degree. F. (200.degree. C.-430.degree. C.).
    Type: Grant
    Filed: December 5, 1983
    Date of Patent: August 27, 1985
    Assignee: Allied Corporation
    Inventors: Edward F. Bart, Arthur S. Chu, George R. Cook
  • Patent number: 4479913
    Abstract: A method and composition for joining adjacent carbon blocks in a high temperature environment including ramming a mix of calcined anthracite, resin, and a monomeric furfuryl alcohol in between the carbon blocks, curing and carbonizing.
    Type: Grant
    Filed: February 18, 1983
    Date of Patent: October 30, 1984
    Assignee: QO Chemicals, Inc.
    Inventors: Denis W. Akerberg, Carl A. Rude
  • Patent number: 4363670
    Abstract: Mesocarbon microbeads are continuously produced by the steps of: (1) mixing a matrix pitch, mesophase microspheres, and a solvent in which the pitch will dissolve but the microspheres will not, thereby to prepare a liquid mixture of a solution and dispersion; (2) processing the mixture in at least two stages of liquid cyclones, thereby to separate it into light and medium-weight liquids and a heavy liquid containing most of the microspheres; and (3) evaporating off the solvent from the heavy liquid thus obtained, thereby to obtain the microspheres as mesocarbon microbeads. The solvent is evaporated off from the light liquid to recover the pitch, and the medium-weight liquid is recycled to step (1) and (2).
    Type: Grant
    Filed: January 5, 1981
    Date of Patent: December 14, 1982
    Assignee: Koa Oil Company, Limited
    Inventors: Kosaku Noguchi, Honami Tanaka, Yukimasa Kumura, Eiji Kitajima, Noriyuki Tsuchiya, Tomonori Sunada
  • Patent number: 4308177
    Abstract: Chloro-hydrocarbons are used as pitch binder modifiers to improve the strength, density and electrical properties of carbon and graphite articles produced from carbonaceous particles, binders, and additives, and are particularly useful in manufacture of electrodes used in ultra high powered electric arc steel furnaces.
    Type: Grant
    Filed: August 27, 1979
    Date of Patent: December 29, 1981
    Assignee: Great Lakes Carbon Corporation
    Inventor: Kenneth W. Tucker
  • Patent number: 4304606
    Abstract: This invention relates to a plasticized coal tar pitch comprising a mixture consisting essentially of about 50 to about 80 weight percent of a coal tar pitch having a softening point of about 40.degree. to about 75.degree. C. (Kramer-Sarnow); and about 50 to about 20 weight percent of a coal tar fraction rich in crystals and having a boiling point of about 350.degree. C. to about 450.degree. C. The mixture is suitable for blending with crude oil bitumen for producing a binder suitable for application to roadways.
    Type: Grant
    Filed: June 6, 1979
    Date of Patent: December 8, 1981
    Assignee: Rutgerswerke Aktiengesellschaft
    Inventors: Heinrich Louis, Helmut Kohler, Rudolf Oberkobusch, Gerd Collin, Volker Potschka
  • Patent number: RE39289
    Abstract: An improved process for making asphalt involves incorporating tar sands into a hot asphalt mix process and modifying the process. The improved process involves using a heated asphalt counter-flow drum mixer to admix asphaltic cement, coarse aggregate, and fine aggregate. During this mixing process, the admixture is heated to produce the asphaltic concrete. In the improved process from about 20 to about 80 percent tar sand is mixed with from about 80 to about 20 percent aggregate and from about 1 to less than about 5 percent liquid asphalt cement in a drum mixer to form an admixture, heating the admixture to a first elevated temperature (e.g., 250° and 400° F.) for a set period of time (e.g., 40 to about 90 seconds); and discharging the heated admixture at a second elevated temperature (e.g., from about 150° to about 350° F.) to produce asphaltic concrete. Preferably, the aggregate has a gradation of 10 to 25 percent passing a #4 sieve, and the admixture has substantially no added fines.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: September 19, 2006
    Inventors: Gill N. Mitchell, Tawna Kay Mitchell, Ned B. Mitchell