From Acetylenic Hydrocarbons Patents (Class 560/242)
-
Publication number: 20140058127Abstract: Methods and systems are provided for converting methane in a feed stream to acetylene. The method includes processing the acetylene to form a stream having vinyl acetate. A hydrocarbon stream is introduced into a supersonic reactor and pyrolyzed to convert at least a portion of the methane to acetylene. The reactor effluent stream is treated to convert acetylene to vinyl acetate. The method according to certain aspects includes controlling the level of carbon monoxide to prevent undesired reactions in downstream processing units.Type: ApplicationFiled: June 11, 2013Publication date: February 27, 2014Inventors: Jeffery C. Bricker, John Q. Chen, Peter K. Coughlin
-
Patent number: 8557922Abstract: A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.Type: GrantFiled: September 14, 2012Date of Patent: October 15, 2013Assignee: Rolic AGInventors: Thomas Bachels, Zoubair Mohammed Cherkaoui, Guy Marck, Olivier Muller, Joachim Reichardt, Andreas Schuster, Hubert Seiberle, Peggy Studer, Thomas Peglow, Jean-Francois Eckert
-
Patent number: 8329823Abstract: A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.Type: GrantFiled: December 1, 2011Date of Patent: December 11, 2012Assignee: ROLIC AGInventors: Thomas Bachels, Zoubair Mohammed Cherkaoui, Guy Marck, Olivier Muller, Joachim Reichardt, Andreas Schuster, Hubert Seiberle, Peggy Studer, Thomas Peglow, Jean-Francois Eckert
-
Publication number: 20120203025Abstract: A process for the selective production of vinyl ester by the reaction of a carboxylic acid with acetylene with a homogeneous catalyst is disclosed and claimed. In one aspect, esters of neoacids are provided.Type: ApplicationFiled: April 24, 2012Publication date: August 9, 2012Inventors: Barbara F.M. Kimmich, Hannah E. Toomey, Qiang Yao, G. Paull Torrence, Jan Cornelis van der Waal, Michael J. Doyle
-
Patent number: 8173749Abstract: A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.Type: GrantFiled: December 19, 2006Date of Patent: May 8, 2012Assignee: Rolic AGInventors: Thomas Bachels, Zoubair Mohammed Cherkaoui, Guy Marck, Olivier Muller, Joachim Reichardt, Andreas Schuster, Hubert Seiberle, Peggy Studer, Thomas Peglow, Jean-Francois Eckert
-
Patent number: 8044233Abstract: The present invention relates to a process for preparing vinyl carboxylates, wherein a carboxylic acid is reacted with an alkyne compound in the presence of a catalyst which is selected from carbonyl complexes, halides and oxides of rhenium, of manganese, of tungsten, of molybdenum, of chromium and of iron and rhenium metal at a temperature of ?300° C. The process gives the desired vinyl esters with high yield.Type: GrantFiled: November 22, 2006Date of Patent: October 25, 2011Assignee: BASF AktiengesellschaftInventors: Wolfgang Staffel, Roland Kessinger, Jochem Henkelmann
-
Patent number: 7982065Abstract: A process for the selective production of vinyl ester by the reaction of a carboxylic acid with acetylene under heterogeneous catalytic conditions is disclosed and claimed. In a preferred embodiment of this invention, reaction of benzoic acid and acetylene in the presence of supported platinum catalyst at a temperature of from about 100 to 180° C. results in quantitative yields of vinyl benzoate.Type: GrantFiled: May 7, 2009Date of Patent: July 19, 2011Assignee: Celanese International CorporationInventors: Barbara F. M. Kimmich, Hannah E. Toomey, Qiang Yao, G. Paull Torrence, Jan Cornelis van der Waal, Bozena A. A. Silberova
-
Patent number: 7473797Abstract: A copper(I) bi-dentate ligand complex-catalyzed procedure for synthesis of 1,3-enynes. The methods and/or systems of this invention afford a variety of enynes, tolerate a variety of sensitive functional groups, and can be employed without resort to expensive palladium reagents.Type: GrantFiled: April 27, 2005Date of Patent: January 6, 2009Assignee: University of MassachusettsInventors: Dhandapani Venkataraman, Craig G. Bates, Pranorm Saejueng
-
Patent number: 6914156Abstract: In yielding diacetoxybutene by feeding butadiene, acetic acid, and oxygen in the presence of a solid catalyst containing palladium, the butadiene can be efficiently reacted to produce diacetoxybutene in high yield by feeding an oxygen-containing gas containing 7 mol % or more oxygen as fine bubbles to a reaction zone containing the solid catalyst.Type: GrantFiled: April 14, 2003Date of Patent: July 5, 2005Assignee: Mitsubishi Chemical CorporationInventors: Kazuhiro Makino, Hiroshi Iwasaka, Kazuyuki Okubo, Koji Hata
-
Patent number: 6602476Abstract: Apparatus and process for heat exchange with fluid beds comprises heat-exchange tubes located longitudinally with respect to the axis of a fluidization zone with a rectangular pitch, one side of which having a length at least one and a half times the length of the other side and/or with a triangular pitch, having two sides each at least one and a half times the length of the shortest side reduces the impact of the heat-exchange tubes on the fluidization characteristics of the fluid bed. The invention is particularly suitable for oxidation reactions using molecular oxygen-containing gas in the presence of a fluid bed of fluidizable catalyst, such as (a) the acetoxylation of olefins, (b) the oxidation of ethylene to acetic acid and/or the oxidation of ethane to ethylene and/or acetic acid, (c) the ammoxidation of propylene and/or propane to acrylonitrile and (d) the oxidation of C4's to maleic anhydride.Type: GrantFiled: September 28, 2001Date of Patent: August 5, 2003Assignee: BP Chemicals LimitedInventors: Stanley John Becker, Timothy Crispin Bristow, Michele Fiorentino, David Newton, Bruce Leo Williams
-
Patent number: 6420595Abstract: A method of real time process control in a reaction system for the production of vinyl acetate from the oxidation of ethylene and acetic acid. Reaction system samples are collected from the reactor vessel feed and/or effluent and/or from columns and/or transfer lines downstream of the reactor vessel, and the concentration of one or more components in the sample is measured by an infrared analyzer. The concentration measurements are then used to make adjustments in the concentration of components in the reaction system, directly or indirectly, such as by adjusting the temperature profile in a particular column, the flow rate of solution in to or out of a column, or the addition or extraction of a component to or from the solution. For optimum process control, the measurements are transmitted to a control unit for real time analysis, and the adjustments are made almost instantly after the infrared analysis.Type: GrantFiled: September 10, 2001Date of Patent: July 16, 2002Assignee: Millennium Petrochemicals, Inc.Inventors: Noel Hallinan, Wayne Brtko
-
Patent number: 6307095Abstract: A process for the catalytic conversion of carboxylic acids with acetylene to vinylesters. At least one, preferably saturated, secondary carboxylic ester and/or at least one, preferably tertiary carboxylic acid is (are) passed in the gas phase together with acetylene at an elevated temperature, preferably in the range of from 150 to 400° C., over a catalyst comprising zinc and a solid inert oxidic carrier, preferably alumina. The carboxylic acids have advantageously the following formula: in which R1 is H or an alkyl group and R2 and R3 are alkyl groups, the total number of C-atoms of R1+R2+R3 being in the range of from 3 to 18. These vinylesters have a good stability and are particularly useful components in emulsion paints and as modifiers in alkyd and epoxy resin.Type: GrantFiled: October 15, 1997Date of Patent: October 23, 2001Inventors: Johannes Jacobus Keijsper, Jean-Paul Lange, Brendan Dermot Murray
-
Patent number: 5952523Abstract: A method for producing vinyl acetate using ethylene, acetic acid and argon containing oxygen that maximizes selectivity and minimizes ethylene loses to purge.Type: GrantFiled: December 31, 1997Date of Patent: September 14, 1999Assignee: Praxair Technology, Inc.Inventors: Vasilis Papavassiliou, Matthew Lincoln Wagner, Roger William Day
-
Patent number: 5395960Abstract: Preparation of vinyl carboxylates by the reaction of a carboxylic acid with acetylene in the presence of a platinum metal complex catalyst, which contains as ligands carbon monoxide or a nitrile (I), a tertiary nitrogen base (II), a tertiary phosphorus compound (III) having C-organic and/or O-organic radicals or mixtures of said compounds.The end products serve as monomers or comonomers for polymer dispersions.Type: GrantFiled: April 28, 1994Date of Patent: March 7, 1995Assignee: BASF AktiengesellschaftInventors: Marc Heider, Thomas Ruehl, Jochem Henkelmann
-
Patent number: 4488996Abstract: Isopropenyl esters are prepared rapidly by reacting for about ten minutes at about 120.degree. C. and a pressure of about 400 pounds per square inch a fatty acid and propyne in the presence of loaded zeolite catalyst.Type: GrantFiled: September 29, 1982Date of Patent: December 18, 1984Assignee: The United States of America as represented by the Secretary of AgricultureInventor: Samuel Serota
-
Patent number: 4393249Abstract: A process for removing alkynes from hydrocarbon mixtures, particularly those containing butadiene by reacting the alkynes with hydroxyl group containing organic compounds in the presence of a silver exchanged ion-exchange resin and separating the products formed from the unreacted components of said mixture.Type: GrantFiled: October 23, 1981Date of Patent: July 12, 1983Assignee: The Dow Chemical CompanyInventors: Albert Heuvelsland, Fritz F. F. Jann, Greet de Block-Martens
-
Patent number: 4125735Abstract: A process for the synthesis of perfume products, Vitamin E and intermediates described herein involving a coupling reaction. For instance, a process for the synthesis of dehydrophytol and Vitamin E comprising forming a C.sub.15 acetylene from hexahydropseudoionone and then coupling said acetylene with 1-acetoxy-4-chloro-3-methylbut-2-ene to form a C.sub.20 acetoxy-enyne. The latter is readily subjected to partial hydrogenation and saponification in that order to form a dehydrophytol, a useful intermediate for the synthesis of Vitamin E and other products.Type: GrantFiled: October 16, 1975Date of Patent: November 14, 1978Assignee: SCM CorporationInventors: Ralph E. Close, William Oroshnik
-
Patent number: 4075257Abstract: The compound 3,7,11-trimethyldodeca-1,2-diene useful for the synthesis of dehydrophytol and Vitamin E.Type: GrantFiled: February 25, 1977Date of Patent: February 21, 1978Assignee: SCM CorporationInventors: Ralph E. Close, William Oroshnik
-
Patent number: 4066713Abstract: A method is disclosed for removing the small fractions of acetylenic compounds from a mixed hydrocarbon stream, the improvement consisting in that said stream is treated with an organic acid in the presence of an acidic ion-exchange resin, preferably an --SO.sub.3 H containing resin, the acidic groups of said resin having totally been exchanged with alkali metal ions or alkaline earth metal ions. Acetic acid (glacial, anhydrous) is the preferred acid.Type: GrantFiled: July 6, 1976Date of Patent: January 3, 1978Assignee: Snamprogetti, S.p.A.Inventors: Rocco Faraci, Carlo Rescalli, Stefano Catini
-
Patent number: 4055575Abstract: A process for the synthesis of dehydrophytol and Vitamin E comprising forming a C.sub.15 acetylene from hexahydropseudoionone and then coupling said acetylene with 1-acetoxy-4-chloro-3-methylbut-2-ene to form a C.sub.20 acetoxy-enyne. The latter is readily subjected to partial hydrogenation and saponification in that order to form a dehydrophytol, a useful intermediate for the synthesis of Vitamin E and other products.Type: GrantFiled: March 20, 1975Date of Patent: October 25, 1977Assignee: SCM CorporationInventors: Ralph E. Close, William Oroshnik