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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 |
| 7374665 | Blending of resid feedstocks to produce a coke that is easier to remove from a coker drum A method of blending delayed coker feedstocks to produce a coke that is easier to remove from a coker drum. A first feedstock is selected having less than about 250 wppm dispersed metals content and greater than about 5.24 API gravity. A second delayed coker feedsto... | 05/20/2008 |
| 7318890 | Pitch fractionation and high softening point pitch A process for fractionating crude pitch by direct contact heating with molten metal is disclosed. The crude pitch, which may contain water, contaminants and/or distillables is heated by direct contact heat exchange with molten metal, preferably maintained as a metal... | 01/15/2008 |
| 7318891 | Noah's pitch process A process for producing pitch from pitch precursors, such as wood tar, coal tar or petroleum fractions is disclosed. Direct contact heat exchange of the pitch precursor with molten metal, preferably maintained as a metal continuous bath, heats the pitch precursor to... | 01/15/2008 |
| 7276284 | Carbon fiber reinforced coke from the delayed coker A number of properties of polygranular carbon bodies can be improved by small quantities of carbon fibers being incorporated in the formulations for production of such bodies. However, it has proven difficult for carbon fibers to be introduced into the green mixture... | 10/02/2007 |
| 7220348 | Method of producing high softening point pitch The present invention provides a way to increase the softening point of heavier hydrocarbons in a relatively low cost and low pressure process using superheated steam to i) increase the carbon yield of the heavier hydrocarbons, while simultaneously ii) removing vola... | 05/22/2007 |
| 7176339 | Manufacture of xylenes using reformate A process is provided for the production of xylenes from reformate. The process is carried out by methylating under conditions effective for the methylation, the benzene/toluene present in the reformate outside the reforming loop, to produce a resulting product havi... | 02/13/2007 |
| 7119239 | Manufacture of xylenes using reformate A process is provided for the production of xylenes from reformate. The process is carried out by methylating under conditions effective for the methylation, the benzene/toluene present in the reformate outside the reforming loop, to produce a resulting product havi... | 10/10/2006 |
| 7066997 | Coal tar and hydrocarbon mixture pitch and the preparation and use thereof 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 ha... | 06/27/2006 |
| 7033485 | Coal tar and hydrocarbon mixture pitch production using a high efficiency evaporative distillation process Described are methods that utilize high efficiency evaporative distillation to make a high softening point coal tar pitch, a quinoline insoluble-free and ash-free coal tar pitch having a desired softening point, and a mesophase coal tar pitch. Each of the methods us... | 04/25/2006 |
| 6979735 | Agglomerates by crystallization The present invention describes novel agglomerates in crystalline form of β-lactam compounds. Furthermore, a process for the preparation of said agglomerates, wherein a solution or suspension of at least one β-lactam compound in a solvent is mixed with one or more... | 12/27/2005 |
| 6652739 | Process for deasphalting residua by reactive recycle of high boiling material An improved process for deasphalting a residua feedstock by use of a short vapor residence time process unit comprised of a horizontal moving bed of fluidized and/or stirred hot particles. The vapor phase product stream from said process unit is passed to... | 11/25/2003 |
| 6533925 | Asphalt and resin production to integration of solvent deasphalting and gasification This invention involves heat integration of a solvent deasphalting process with a gasification process and an improved process for separating a resin phase from a solvent solution comprising a solvent, deasphalted oil (DAO) and resin. This improved proces... | 03/18/2003 |
| 6402934 | Recovery and transportation of heavy crude oils Novel amine-chelate complexes are useful in significantly reducing the viscosity of heavy crude oils, facilitating the recovery and transportation of such heavy crude oils. The amine-chelate complexes are formed by heating together an organic amine with a... | 06/11/2002 |
| 6068758 | Process for hydrocracking heavy oil The catalyst comprises a mixture of hydrocracked residual asphaltene and metal-doped coke. The catalyst is produced by mixing an oil-soluble metal compound catalyst precursor (e.g. Mo or Ni soap) with heavy oil containing asphaltene and hydrocracking the ... | 05/30/2000 |
| 6048448 | Delayed coking process and method of formulating delayed coking feed charge A process for upgrading petroleum residua to more valuable products by visbreaking or otherwise thermally cracking a petroleum residuum to produce a thermally cracked bottoms stream, vacuum distilling at least a portion of the thermally cracked bottoms st... | 04/11/2000 |
| 5730949 | Direct process route to organometallic containing pitches for spinning into pitch carbon fibers An improved process is disclosed for producing a metals containing anisotropic pitch product suitable for carbon fiber manufacture. Soluble-aromatic, organometallic compounds are added to a carbonaceous feedstock substantially free of mesophase pitch and ... | 03/24/1998 |
| 5605618 | Process for preparing nitrogen-containing isotropic pitch and nitrogen-containing isotropic pitch A process for preparing nitrogen-containing isotropic pitch, comprising the steps of mixing a petroleum heavy oil, a nitrating reagent and water to prepare a homogeneous dispersion, thereby contacting the petroleum heavy oil with the nitrating reagent in ... | 02/25/1997 |
| 5507938 | Flash thermocracking of tar or pitch A process for producing high-quality pitches comprising atomizing a preheated feed material of carbonaceous tar and/or pitch, forming an aerosol, contacting the aerosol in a reaction vessel with a flowing, non-reactive gas atmosphere for less than about 1... | 04/16/1996 |
| 5405524 | Process for the catalytic conversion of low molecular weight aromatic hydrocarbons The process of the invention comprises: a) heating at least one low molecular weight aromatic hydrocarbon in the presence of a Lewis acid under conditions sufficient to produce a pitch of desired composition and properties; b) recovering a pitch of desired com... | 04/11/1995 |
| 5372702 | Composition for use in the production of composite carbon materials, composition carbon material produced therefrom, and process for producing the same The improved composition for use in the production of composite carbon materials comprises a mesophase pitch containing at least 80% of an optical anisotropic phase and having a softening point of no higher than 250° C., and sulfur present in an amount o... | 12/13/1994 |
| 5182011 | Process for preparing pitches Commercially attractive continuous processes for the preparation of mesophase pitches for manufacturing high-performance carbon fibers are disclosed. One feature resides in that conversion of a pitch into a mesophase pitch is conducted continuously by usi... | 01/26/1993 |
| 5120424 | Binder pitch for an electrode and process for its manufacture The disclosed bonding pitch for electrodes, having a softening point C.I.A. comprised between 80° C. and 150° C., a concentration of quinoline-insoluble substances higher or equal to 4% by weight, a concentration of +ଲ resins comprised betw... | 06/09/1992 |
| 5024752 | Upgrading of resids by liquid phase mild coking Heavy resid oils are upgraded by a thermal treatment under liquid coking conditions to evolve two at least partially immiscible liquid phases. The lighter gas oil phase is then separated from the heavier liquid coke phase by decantation.... | 06/18/1991 |
| 4977023 | Elastic carbon fibers A fiber made of pitch is disclosed. In the preferred and illustrated embodiment, the fiber has a percent elongation of about 2 percent or greater. This fiber is made by melt spinning an optically isotropic pitch to form a fiber typically in the range of a... | 12/11/1990 |
| 4961837 | Process for the production of petroleum tar pitch for use as a binder in the production of electrodes A process for the production of high quality petroleum tar pitch for use as a binder in the manufacture of electrodes for the aluminum and steel industries from a highly aromatic feed comprises fractionating the feed in an oxygen-free environment under co... | 10/09/1990 |
| 4931162 | Process for producing clean distillate pitch and/or mesophase pitch for use in the production of carbon filters A clean pitch suitable for the manufacture of carbon artifacts is obtained by distilling from an aromatic feedstock a distillate material free from mesophase forming resins. The distillate is heated to obtain a heat soaked distillate free from mesophase b... | 06/05/1990 |
| 4931163 | Pitch fluoride 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, ... | 06/05/1990 |
| 4925547 | Process for producing pitch for the manufacture of high-performance carbon fibers together with pitch for the manufacture of general-purpose carbon fibers A process for co-production of a pitch for the manufacture of HP carbon fibers and a pitch for the manufacture of GP carbon fibers is proposed. The pitch for the manufacture of GP carbon fibers is prepared from the spent fraction not used in the productio... | 05/15/1990 |
| 4846957 | Precipitation of asphaltene Asphaltenes are separated from hydrocarbon oil by bringing the oil into contact with formic acid or a water-soluble organic acid consisting of carbon, hydrogen and oxygen and having at least two functional groups.... | 07/11/1989 |
| 4836909 | Process of thermally cracking heavy petroleum oil A process of thermally cracking a heavy petroleum oil wherein the heavy petroleum oil is treated successively in a cracking furnace and then in a perfect mixing type tank reactor. The thermal cracking in the cracking furnace is performed at a temperature ... | 06/06/1989 |
| 4820401 | Process for the preparation of mesophase pitches A process for the preparation of an excellent mesophase pitch suitable for use as a spinning pitch for the production of high performance carbon fibers is disclosed. The mesophase pitch can satisfy the four remarkable characteristics at the same time, i.e... | 04/11/1989 |
| 4802920 | Extraction of metals from aqueous solutions with asphaltenes A process for extracting metals from aqueous solutions containing such metals comprising contacting such an aqueous solution with an asphaltene to extract at least one metal from the aqueous solution to the asphaltene, and recovering the thus extracted at... | 02/07/1989 |
| 4801372 | Optically anisotropic pitch A novel optically anisotropic pitch is provided which is produced by thermal modification of a polymer having a structure of an alkylbenzene and a condensed aromatic compound with two to four fused rings bonded to each other via a methylene group. In pref... | 01/31/1989 |
| 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 |
| 4789455 | Process for producing pitch used as starting material for the making of carbon materials A process for producing pitch useful as a starting material for the manufacture of a carbon material is provided. The pitch is produced by polymerizing a condensed nuclear aromatic compound or a material containing the same. The polymerization is carried ... | 12/06/1988 |
| 4789456 | Process for preparing mesophase pitches A process for an efficient preparation of a mesophase pitch is disclosed. The process is suitable for the production of high performance carbon fibers, from a coal tar or a petroleum residual oil. More particularly, the present invention relates to a proc... | 12/06/1988 |
| 4773985 | Method of optimizing mesophase formation in graphite and coke precursors Mesophase formation is optimized in graphite and coke precursors by a process which includes determining the values of critical chemical parameters for proposed precursors, modifying the precursors by adjusting such critical chemical parameters as oxygen ... | 09/27/1988 |
| 4759839 | Process for producing pitch useful as raw material for carbon fibers A process for producing a pitch useful as a raw material for carbon fibers, which comprises (1) heat-treating at least one starting material selected from the group consisting of a heavy oil obtained by fluid catalytic cracking of a petroleum, a distillat... | 07/26/1988 |
| 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 |
