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...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8168843 | Reformate benzene reduction via transalkylation A process for reducing benzene content in a reformate stream, including: fractionating a full range reformate comprising benzene, C7 to C9 monoalkyl aromatics, and C10+ polyalkyl aromatics into at least three fractions including a li... | 05/01/2012 |
| 8030533 | Method for combined production of paraxylene and benzene with improved productivity A process for the combined production of para-xylene and benzene comprises: separating a first feed, by adsorption in a simulated moving bed SMB, to produce an extract E rich in para-xylene and at least one raffinate R which is dep... | 10/04/2011 |
| 7638669 | Integrated process for producing xylenes and high purity benzene Processes and apparatus are provided that provide high yields of xylenes per unit of aromatic-containing feed while enabling a high purity benzene co-product to be obtained without the need for an extraction or distillation to remove C6 naphthenes. The pr... | 12/29/2009 |
| 7632975 | Process for the synthesis of arylfluorenes and analogs thereof A process is provided for the synthesis of a compound of formula (I): wherein: M=0 or 1; N and p are 0 or 1 to 4; X is a single bond, O, S or NH; ... | 12/15/2009 |
| 7544848 | Integrated process for producing xylenes and high purity benzene Processes and apparatus are provided that provide high yields of xylenes per unit of aromatic-containing feed while enabling a high purity benzene co-product to be obtained without the need for an extraction or distillation to remove C6 naphthenes. The pr... | 06/09/2009 |
| 7405335 | Integrated process for producing xylenes and high purity benzene Processes and apparatus are provided that provide high yields of xylenes per unit of aromatic-containing feed while enabling a high purity benzene co-product to be obtained without the need for an extraction or distillation to remove C6 naphthenes. The pr... | 07/29/2008 |
| 7387978 | Selective para-xylene production via methylation of toluene with methanol in the presence of modified HZSM-5 catalyst We disclose a method for converting toluene to xylenes, comprising contacting toluene with methanol in the presence of a silica-bound HZSM-5 catalyst. As an example, in one embodiment the method can include: (i) first silylating HZSM-5, to form silylated HZSM-5; (ii... | 06/17/2008 |
| 7361798 | Production of dialkylbenzenes The invention relates to a process for producing a desired dialkylbenzene isomer having a formula R2C6H4, where R is an alkyl substituent, by contacting a polyalkylbenzene compound of formula RnC6H6-n... | 04/22/2008 |
| 7358414 | Para-xylene process using perm-selective separations Processes and apparatus are disclosed for recovery of purified products from a fluid mixture by means of integrated perm-selective separations with purified product recovery operations. More particularly, integrated processes of the invention comprise separations by... | 04/15/2008 |
| 7326819 | High-activity isomerization catalyst and process A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component of... | 02/05/2008 |
| 7314601 | Processes for producing xylenes using isomerization and transalkylation reactions and apparatus therefor Processes for making xylene isomer use integrated transalkylation and isomerization reaction zones to enhance xylene recovery and enable reduction in capital costs and energy consumption. ... | 01/01/2008 |
| 7304193 | Integrated process for aromatics production An aromatics complex flow scheme has been developed. The isomerized xylenes effluent from a xylene recovery zone is recycled to a transalkylation stripper without requiring C8 aromatic hydrocarbons to be separated. This improvement results in an aromatics... | 12/04/2007 |
| 7288687 | Integrated process for aromatics production An aromatics complex flow scheme has been developed in which C7-C8 aliphatic hydrocarbons are recycled to an isomerization unit of a xylene recovery zone to increase the efficiency of the isomerization unit. This improvement results in an aroma... | 10/30/2007 |
| 7276636 | Styrene process with recycle from dehydrogenation zone A styrene process is disclosed that uses a dehydrogenation reactor and a transalkylation reactor and in which a significant portion of the benzene, the inhibitors, or both, recovered from the dehydrogenation reactor passes to the transalkylation reactor. The process... | 10/02/2007 |
| 7271303 | Multi-zone process for the production of diesel and aromatic compounds A multi-zone process for the production of low sulfur diesel and aromatic compounds wherein C9+ hydrocarbons are hydrocracked to produce low sulfur diesel and a naphtha boiling range stream which is reformed and transalkylated within reforming ... | 09/18/2007 |
| 7271123 | Molecular sieve catalyst composition, its making and use in conversion process The invention relates to a molecular sieve catalyst composition, to a method of making or forming the molecular sieve catalyst composition, and to a conversion process using the catalyst composition. In particular, the invention is directed to a molecular sieve cata... | 09/18/2007 |
| 7268263 | Integrated process for aromatics production An aromatics complex flow scheme has been developed. C7-C8 aliphatic hydrocarbons are recycled to an isomerization unit of a xylene recovery zone to increase the efficiency of the isomerization unit. This improvement results in an aromatics com... | 09/11/2007 |
| 7249469 | Method for separating a multicomponent stream This invention relates to a method for separating a stream having benzene, toluene and alkyl benzene, said method comprising: feeding the stream into a first distillation column, wherein the stream comprises between about 60 mole percent to about 85 mole percent tol... | 07/31/2007 |
| 7230152 | Process for selective aromatics disproportionation with increased conversion An improved process is disclosed for the selective disproportionation of toluene. The process preferably uses a disproportionation catalyst comprising a pentasil type zeolite such as MFI that is bound with aluminum-phosphate. Running the process at a toluene convers... | 06/12/2007 |
| 7220888 | Method for producing hydrocarbons having a modified carbon skeleton The invention relates to a method for producing hydrocarbons having a modified carbon skeleton by reacting aliphatic hydrocarbons a) with themselves, b) with another aliphatic hydrocarbon or c) with aromatic alkyl substituted hydrocarbons, in the presence of a metal... | 05/22/2007 |
| 7179434 | Integrated apparatus for aromatics production Enabling a transalkylation process to handle both C10 alkylaromatics and unextracted toluene permits the following improvements to be realized. No longer extracting toluene allows a reformate-splitter column to be eliminated. The extraction unit can be mo... | 02/20/2007 |
| 7169730 | Modified carbide and oxycarbide containing catalysts and methods of making and using thereof Compositions including modified carbide-containing nanorods and/or modified oxycarbide-containing nanorods and/or modified carbon nanotubes bearing carbides and oxycarbides and methods of making the same are provided. Rigid porous structures including modified oxyca... | 01/30/2007 |
| 7169368 | Integrated apparatus for aromatics production Enabling a transalkylation process to handle both C10 alkylaromatics and unextracted toluene permits the following improvements to be realized. No longer extracting toluene allows a reformate-splitter column to be eliminated. The extraction unit can be mo... | 01/30/2007 |
| 7160831 | Molecular sieve catalyst composition, its making and use in conversion processes The invention relates to a molecular sieve catalyst composition, to a method of making or forming the molecular sieve catalyst composition, and to a conversion process using the catalyst composition. In particular, the invention is directed to making a formulated mo... | 01/09/2007 |
| 7151199 | Hydrocarbon conversion processes using non-zeolitic molecular sieve catalysts Hydrocarbon or oxygenate conversion process in which a feedstock is contacted with a non zeolitic molecular sieve which has been treated to remove most, if not all, of the halogen contained in the catalyst. The halogen may be removed by one of several methods. One m... | 12/19/2006 |
| 7128883 | Process and apparatus for ethylbenzene production and transalkylation to xylene The use of two transalkylation catalysts to react aromatic compounds of carbon number nine (and heavier carbon numbers) with benzene to form carbon number eight aromatics is disclosed. The two catalyst system preserves ethyl-group species on the heavier aromatics th... | 10/31/2006 |
| 7109389 | Process for the disproportionation and transalkylation of toluene and heavy aromatics A process for the disproportionation and transalkylation of toluene and the heavy aromatics comprises: subjecting a first stream of toluene, and a stream enriched in aromatics of nine carbon atoms to toluene disproportionation and transalkylation reactions in the pr... | 09/19/2006 |
| 7094941 | Selectivated metallosilicate catalyst composite for alkyl aromatic conversion, process for the preparation thereof, use thereof in hydrocarbon conversion A repeated “soak and dry” selectivation process for preparing a modified metallosilicate catalyst composite is disclosed comprising of a mixture of amorphous silica, alumina and a pore size controlled metallosilicate useful for alkylaromatic conversion. The proc... | 08/22/2006 |
| 7094939 | Styrene process with recycle from dehydrogenation zone A styrene process is disclosed that uses a dehydrogenation reactor and a transalkylation reactor and in which a significant portion of the benzene, the inhibitors, or both, recovered from the dehydrogenation reactor passes to the transalkylation reactor. The process... | 08/22/2006 |
| 7041866 | Solid-acid isomerization catalyst and process A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component co... | 05/09/2006 |
| 7022889 | Isomerization process using novel catalyst A process for the isomerization of a feedstream comprising C5–C6 hydrocarbons where the process involves charging hydrogen and a feedstream comprising at least normal C5–C6 hydrocarbons into an isomerization zone and c... | 04/04/2006 |
| 7019184 | Non-oxidative conversion of gas to liquids The present invention provides a process for natural gas in the form, e.g., of stranded gas or associated gas to transportable liquids. More particularly, the present invention provides a process in which the gas is non-oxidatively converted to aromatic liquid, pref... | 03/28/2006 |
| 7015175 | High-activity isomerization catalyst and process A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component of... | 03/21/2006 |
| 6979396 | Combination reforming and isomerization process A reforming and isomerization process has been developed. A reforming feedstream is charged to a reforming zone containing a reforming catalyst and operating at reforming conditions to generate a reforming zone effluent. Hydrogen and an isomerization feedstream is c... | 12/27/2005 |
| 6977322 | Isomerization catalyst and processes A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a tungstated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component ... | 12/20/2005 |
| 6972347 | Method for converting aromatic hydrocarbons A method for converting aromatic hydrocarbons by contacting an aromatic hydrocarbon starting material including benzene and having a non-aromatic compound content of 1% by weight or less, with a catalystto generate useful C7 and C8 aromatic hydrocarbons while reduci... | 12/06/2005 |
| 6958425 | Aromatics transalkylation to ethylbenzene and xylenes The use of transalkylation catalysts to react heavy aromatic compounds of carbon number nine (and heavier carbon numbers) with benzene to form carbon number eight aromatics is disclosed. The catalyst system preserves ethyl-group species on the heavier aromatics that... | 10/25/2005 |
| 6936744 | Alkylaromatics production The present invention provides a process for producing a monoalkylated aromatic compound, particularly cumene, comprising the step of contacting a polyalkylated aromatic compound with an alkylatable aromatic compound under at least partial liquid phase conditions an... | 08/30/2005 |
| 6927188 | High-activity isomerization catalyst and process A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component of... | 08/09/2005 |
| 6924407 | Pressure-tuned solid catalyzed heterogeneous chemical reactions Improved methods for conducting solid acid-catalyzed, near- or supercritical heterogeneous chemical reactions (e.g., alkylation reactions) are provided which give enhanced product yields and permit longer processing runs. The preferred reactions of the invention are... | 08/02/2005 |
