By Condensive Ring Expansion, E.g., "olefin Dismutation", Etc. Patents (Class 585/364)
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Patent number: 7838711Abstract: The invention relates to a process for carrying out metathesis reactions, wherein the process is carried out continuously and a ruthenium-containing catalyst is used.Type: GrantFiled: July 7, 2005Date of Patent: November 23, 2010Assignee: Boehringer Ingelheim International GmbHInventors: Thomas Herweck, Albrecht Jacobi, Thomas Nicola, Michael Wiese
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Patent number: 7151199Abstract: 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 method includes heating the catalyst in a low moisture environment, followed by contacting the heated catalyst with air and/or steam. Another method includes steam-treating the catalyst at a temperature from 400° C. to 1000° C. The hydrocarbon or oxygenate conversion processes include the conversion of oxygenates to olefins, the conversion of oxygenates and ammonia to alkylamines, the conversion of oxygenates and aromatic compounds to alkylated aromatic compounds, cracking and dewaxing.Type: GrantFiled: June 10, 2002Date of Patent: December 19, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Luc Roger Marc Martens, Stephen N. Vaughn, Albert Edward Schweizer, John K. Pierce, Shun Chong Fung
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Patent number: 6639116Abstract: Novel condensation reactions used to produce 1,3-cyclohexadiene. Such a compound is an important precursor in the manufacture of high performance plastics, as one example, are provided. In the past, the production methods for such 1,3-cyclohexadiene required very complex reactions involving numerous process steps. Such a method has proven costly, difficult to properly monitor and control, and less than reliable to provide even low amounts of such a precursor compound. The inventive production methods thus permit a reduction in complexity and cost, and, with a single reaction step, facilitate quality measurements as to the product purity itself.Type: GrantFiled: March 15, 2002Date of Patent: October 28, 2003Assignee: Millken & CompanyInventors: John G. Lever, Kenneth Wagner, John C. Sworen
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Patent number: 4822937Abstract: A process for the production of isobutylbenzenes in particular, isobutylbenzene itself, is provided. The process is in two stages and comprises (1) reacting a vinylcyclohexane with an isoolefin of formula (R)(R.sup.1)C.dbd.C(CH.sub.3).sub.2 in the presence of a dismutation catalyst to produce an isobutenylcyclohexene and (2) contacting the isobutenylcyclohexene with a dehydroisomerisation catalyst to produce an isobutylbenzene. Examples of vinylcyclohexenes which can be used include 4-vinylcyclohexene and styrene.Type: GrantFiled: May 24, 1988Date of Patent: April 18, 1989Assignee: BP Chemicals LimitedInventors: Derek K. MacAlpine, Malcolm J. Lawrenson
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Patent number: 4777309Abstract: A continuous process for producing 5-vinyl-2-norbornene, useful as the raw material of 5-ethylidene-2-norbornene used as a termonomer for EPDM, from a mixture of cyclopentadiene and butadiene or from a mixture of cyclopentadiene and dicyclopentadiene and butadiene by the Diels-Alder reaction which process comprises adding from 10 to 10,000 ppm of N,N-diethylhydroxylamine or 4-oxo-2,2,6,6-tetramethylpiperidine-1-oxyl relative to the total weight of cyclopentadiene and butadiene or of a mixture of cyclopentadiene and dicyclopentadiene and butadiene, continuously introducing the resulting mixture into a pressure reaction vessel, allowing them to react in the absence of any gas phase portion within the said pressure reaction vessel, and continuously withdrawing the reaction product.Type: GrantFiled: September 29, 1987Date of Patent: October 11, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Kazuo Kimura, Masahiro Usui, Fujio Masuko
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Patent number: 4668836Abstract: A process for producing cycloalkadienes in liquid phase by metathesis reaction of cycloalkenes in the presence of a carrier catalyst based on Re.sub.2 O.sub.7 /Al.sub.2 O.sub.3. The cycloalkenes in the form of 0.01 to 0.05 molar solutions are contacted with the carrier catalyst in a fixed bed arrangement with contact times of 10 to 100 seconds.Type: GrantFiled: October 24, 1985Date of Patent: May 26, 1987Assignee: Consortium fur Elektrochemische Industrie GmbHInventors: Hans-J/u/ rgen Eberle, Franz-Heinrich Kreuzer, Norbert Zeitler
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Patent number: 4508930Abstract: There is disclosed a process for the conversion of terpenes to limonene which comprises contacting at least one terpene, selected from the group comprised of mono- and bi-cyclic unsaturated hydrocarbons having the formula C.sub.10 H.sub.16 with an alkali metal sulfide catalyst on a support at a temperature of 300.degree. to 450.degree. C.Type: GrantFiled: July 20, 1984Date of Patent: April 2, 1985Assignee: The Goodyear Tire & Rubber CompanyInventors: Lawson G. Wideman, Lynn A. Bente
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Patent number: 4431855Abstract: In an olefin disproportionation reaction, the formation of undesirable polymer is inhibited by the inclusion of a small amount of carbon monoxide in the feed.Type: GrantFiled: August 30, 1982Date of Patent: February 14, 1984Assignee: Phillips Petroleum CompanyInventors: Robert E. Reusser, Donald G. Kuper
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Patent number: 4180524Abstract: Double bond isomerization and disproportionation of olefins is obtained by contact with a catalyst in a single-stage composition containing a support, uranium, and at least one of tungsten, molybdenum, or rhenium.Type: GrantFiled: February 16, 1978Date of Patent: December 25, 1979Assignee: Phillips Petroleum CompanyInventors: Robert E. Reusser, William B. Hughes