Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7393449 | Petroleum hydrocarbon binder with reduced polycyclic aromatic hydrocarbon content A binder pitch material includes a petroleum pitch and asphalt fraction obtained from petroleum crude oil and has a significantly lower polycyclic aromatic hydrocarbon composition than a coal tar pitch having a like softening point. The pitch material is useful as a... | 07/01/2008 |
| 7282135 | Low viscosity, high carbon yield pitch product A low viscosity, high coking value petroleum tar material having a high coking value as compared to standard petroleum tars and containing at least one biodiesel material dissolved therein, and a method for producing such material, are disclosed. ... | 10/16/2007 |
| 7264667 | Pretreated aggregate for hotmix asphalt concrete applications and other related applications A process of producing an asphalt concrete with enhanced performance is provided by utilizing a primer. The primer is added to a hot aggregate with a surface temperature of at least 250 deg. F. prior to addition of an asphalt-derived base binder. The primer forms a ... | 09/04/2007 |
| 7252755 | Viscosity modification of heavy hydrocarbons A low-viscosity, high-softening point heavy hydrocarbon material having a viscosity-reducing amount of at least one biodiesel material dissolved in a heavy hydrocarbon, and a method for producing such low-viscosity, high-softening point heavy hydrocarbon material ar... | 08/07/2007 |
| 7094331 | Viscosity modification of heavy hydrocarbons using dihydric alcohols A low viscosity, high softening point heavy hydrocarbon material having a viscosity reducing amount of at least one dihydric alcohol dissolved therein, and a method for producing such heavy hydrocarbon material, are disclosed. ... | 08/22/2006 |
| 7067050 | Petroleum hydrocarbon binder with reduced polycyclic aromatic hydrocarbon content A binder pitch material includes a petroleum pitch and asphalt fraction obtained from petroleum crude oil and has a significantly lower polycyclic aromatic hydrocarbon composition than a coal tar pitch having a like softening point. The pitch material is useful as a... | 06/27/2006 |
| 7008526 | Processes for producing coke, artificial graphite and carbon material for negative electrode of non-aqueous solvent type secondary battery and pitch composition used therefor When a pitch composition prepared by mixing 100 parts by weight of mesophase pitch with 10 to 1,000 parts by weight of coal tar pitch, is heat-treated at a temperature of 500° C. or higher, it is possible to produce a high-density coke at a high yield while avoidin... | 03/07/2006 |
| 7008670 | Bituminous composition This composition sealant relates to rejuvenating, sealing, and preserving asphalt pavements and concrete surfaces. More specifically, the sealant composition includes soy products and other vegetable products. More specifically, the agricultural sealant composition ... | 03/07/2006 |
| 6717021 | Solvating component and solvent system for mesophase pitch A solvating component for a solvated mesophase pitch. The solvated component includes a mixture of aromatic hydrocarbons having boiling points in the atmospheric equivalent boiling point range of about 285° to about 500° C. (about 550° F.-932° F.). At least 80% ... | 04/06/2004 |
| 6659684 | System for repairing bituminous wearing courses A method for repairing a damaged area of a bitutinous wearing course. The method comprises heating the damaged area, applying a liquid to the damaged area that rejuvenates damaged bitumen, adding new material to the damaged area in an amount required to l... | 12/09/2003 |
| 6478951 | Compatibilizer for crumb rubber modified asphalt A compatibilizer and process for use in making crumb rubber modified asphalt. The compatibilizer causes the crumb rubber to completely interact with the asphalt, thereby improving the rheological properties of the asphalt and reducing the tendency of pave... | 11/12/2002 |
| 6383365 | Low softening point petroleum pitch and sealer A 40 petroleum pitch is disclosed. A high melting point petroleum pitch is blended with a high boiling normally liquid petroleum derived hydrocarbon stream to form a mixture having a softening point of 35-45 C. as a partial or complete replacement for coa... | 05/07/2002 |
| 6361591 | Sealer from asphalt and pitch A better asphalt based sealer for driveways and the like is disclosed. The material uses as a hybrid sealer base or binder comprising a blend of pitch, asphaltic material and cut-back oil as a partial or complete replacement for pure coal tar materials. D... | 03/26/2002 |
| 6352637 | High coking value pitch A high coking value pitch with a relatively low softening point is disclosed. A pitch is distilled or thermally processed to produce an intermediate pitch with an increased coking value and relatively high softening point, then blended with a cutter solve... | 03/05/2002 |
| 6277904 | Tires/retreads including trinidad lake asphalt as a component thereof New or improved tires and retreads for tires which incorporate Trinidad Lake Asphalt (TLA), also known as Trinidad Natural Asphalt or Epure, as a raw material therein. TLA is advantageously used in addition to or as a substitute for other known component(... | 08/21/2001 |
| 6267809 | Driveway sealer using phase stable pourable pitch 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 ... | 07/31/2001 |
| 5843298 | Method of production of solids-free coal tar pitch A process for converting coal tar containing quinoline-insoluble particles (Q.I.) produces a substantially Q.I.-free coal tar pitch and a separate, Q.I.-containing coal tar pitch. Dehydrated coal tar, soft coal tar pitch or hard coal tar pitch are subject... | 12/01/1998 |
| 5746906 | Coal tar pitch blend having low polycyclic aromatic hydrocarbon content and method of making thereof A coal tar pitch/petroleum pitch blend is disclosed together with a method of making the same. In accordance with the invention, a crude coal tar material is selected according to specific properties including QI, specific gravity, water and ash content. ... | 05/05/1998 |
| 5711796 | Bituminous compositions having enhanced performance properties Bituminous compositions of enhanced physical/performance properties comprising an oxidation product of a naturally occurring asphalt from the Orinoco Belt of Venezuela and the bitumen base material, and methods for their preparation.... | 01/27/1998 |
| 5632884 | Asphalt compositions, method of preparation, and use A modified or bridged asphalt composition. The composition can be obtained by treating at least one asphalt base with an acid-derived compound having at least two functional groups capable, respectively, of being grafted onto one or more sites located on ... | 05/27/1997 |
| 5534134 | Low PAH pitch and process for same Described are preferred pitches which comprise a blend of coal tar pitch, petroleum pitch and gilsonite pitch, and preferred processes and compositions which can be used to form such pitches. The pitches have substantially reduced contents of polyaromatic... | 07/09/1996 |
| 5248407 | Storage stable polymer modified asphalt paving binder Paving binders, especially hot mix paving mixtures, having excellent storage stability, reduced binder runoff, and high temperature viscosity are formed by adding a copolymer of ethylene with an alkyl acrylate or vinyl acetate and a neutralized sulfonated... | 09/28/1993 |
| 5192420 | Vibration damper obtained by adjusting the resin and aromatic components of the asphalt base Disclosed herein is a vibration damper comprising 30-70 wt. % of a vibration damper base composed of approximately 30-38 wt. % of a resin component and approximately 55-65 wt. % of aromatic components and obtained either by adjusting the components contai... | 03/09/1993 |
| 5114648 | Method of producing products from rubber compositions A process for producing thermoplastic resin products where granulated or particulate vulcanized rubber is sprayed by a heated heavy paraffin distillate composition to form a first intermediate mixture composition. The first intermediate mixture compositio... | 05/19/1992 |
| 5080777 | Refining of heavy slurry oil fractions For upgrading heavy slurry oil containing catalyst fines from a catalytic cracking operation, the viscosity of the slurry oil is lowered in a hydrovisbreaking process step. In a preferred embodiment an admixture of the fines containing slurry oil and a me... | 01/14/1992 |
| 5037697 | Carbon fiber and process for producing the same The present invention relates to a carbon fiber having a novel structure in which the outer circumferential part of fiber section is constituted of an optically isotropic component and its central part is constituted of an optically anisotropic component ... | 08/06/1991 |
| 4978393 | Process for the manufacture of stockable dense road asphalts A process for the manufacture of stockable dense road asphalt that is comprised of materials, having elements of a diameter from essentially zero to 10-30 mm, coated in a cutback or fluidified bitumen-based binder. The materials are separated into at leas... | 12/18/1990 |
| 4904305 | Novel asphaltic composition 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 convent... | 02/27/1990 |
| 4851260 | Process for producing a penetrative asphaltic binder and applying the binder to a granular material A method of producing a penetrative binder product for stabilizing absorptive granular material. The binder product comprising a combination of resin asphaltene residuum, paving grade asphalt, and a non-evaporative diluent to yield a penetrative binder wh... | 07/25/1989 |
| 4818367 | Asphalt, copolymer and elastomer composition An asphalt composition containing an asphalt, a copolymer of an olefin with an anhydride or a nitrile, and an unsaturated elastomer having at least two terminal groups each with an active hydrogen, a halogen, an epoxy oxygen or a cyanocarbon. The composit... | 04/04/1989 |
| 4806227 | Carbon black inhibition of pitch polymerization There is disclosed pitch prepared from petroleum pitch, which is normally considered to be inferior to coal tar pitch, which petroleum pitch has properties to equal that of coal tar pitch. That is to say, that the softening points, the Conradson carbon, t... | 02/21/1989 |
| 4793912 | Process for producing a pitch having a low softening point 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 modif... | 12/27/1988 |
| 4777064 | Method of reducing penetration of paving grade asphalts and applying the product to a granular material A first method for reducing the penetration of paving grade asphalts. Paving grade asphalt is blended with a solvent extracted resin-asphaltene residuum in the proportions of approximately 75% to 25% by weight, respectively, to yield penetration of 25 or ... | 10/11/1988 |
| 4755277 | Process for the preparation of a hydrocarbonaceous distillate and a residue A process is disclosed for the preparation of a hydrocarbonaceous distillate and a hydrocarbonaceous residue, which comprises mixing a residual fraction of a product obtained by catalytic cracking or hydrocracking a hydrocarbonaceous feedstock, with a sec... | 07/05/1988 |
| 4693752 | Coating grade asphalt An asphalt-based composition comprising an air-blown blend of hard asphalt flux and the residue obtained by vacuum distilling the product obtained by the hydrogenation of asphalt flux, the composition meeting coating grade asphalt specifications.... | 09/15/1987 |
| 4629510 | Method for producing industrial asphalts without air-blowing using zinc chloride 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 ... | 12/16/1986 |
| 4617062 | Roofing asphalt compositions containing hydrocracked pitch 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 ... | 10/14/1986 |
| 4606808 | Method for the preparation of pitches for spinning carbon fibers The invention provides a method for the preparation of a pitch spinnable into pitch filaments as a precursor of carbon fibers starting from a pitch material such as coal tar and coal tar pitch. Different from the conventional procedure involving hydrogena... | 08/19/1986 |
| 4581123 | Custom blended precursor for carbon artifact manufacture This invention is based upon a new concept in carbon artifact manufacture, wherein a precursor can be manufactured by blending extracted components of at least one pitch to give an optimized mixture having the proper chemistries and rheology to provide hi... | 04/08/1986 |
| 4579645 | Starting pitch for carbon fibers Provided is a starting pitch for producing carbon fiber by heat-treating the starting pitch to obtain a precursor pitch, melt-spinning the precursor pitch, then rendering the resultant pitch fiber infusible, followed by carbonization, and further followed... | 04/01/1986 |
