Including Contact With Solid Agent Patents (Class 570/239)
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Patent number: 11648549Abstract: An ion exchange tank is provided. The ion exchange tank includes a processing chamber and an additive chamber separated by a weir system, the weir system having a flow channel fluidly connecting the processing chamber to the additive chamber, wherein the flow is divided from the additive chamber by a first partition and divided from the processing chamber by a second partition, wherein the additive chamber comprises a solids-absorbing material disposed therein.Type: GrantFiled: November 6, 2019Date of Patent: May 16, 2023Assignee: CORNING INCORPORATEDInventors: Richard Wayne Bernard, Tonia Havewala Fletcher, Christopher Lee Timmons
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Patent number: 9206097Abstract: The present invention is directed towards a method of purification of chloroolefins having 3 carbons and to a method to provide stable compositions of chloroolefins having 3 carbons. The chloroolefins are purified via the use of a solid absorbents for the removal of decomposition product such as phosgene and/or phosgene precursory from the reaction of the chloroolefins with oxygen. The chloroolefins stabilized against an increase of the phosgene level via the addition of inhibitors to the chloroolefins.Type: GrantFiled: November 12, 2010Date of Patent: December 8, 2015Assignee: Arkema Inc.Inventors: Maher Y. Elsheikh, Philippe Bonnet
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Patent number: 8388857Abstract: Disclosed is a combination of hydrofluoroolefins and/or hydrochlorofluoroolefins with stabilizers wherein the stabilizers minimize the degradation of the hydrofluoroolefins and hydrochlorofluoroolefins during storage, handling and use yet allow for atmospheric degradation. The combinations exhibit low or zero ozone depletion potential and lower global warming potential making them of interest as replacements for chlorofluorocarbons and hydrfluorocarbons. The combinations of the present invention comprise hydrofluoroolefins and/or hydrochlorofluoroolefins in combination with a stabilizer or stabilizers selected from free radical scavengers, acid scavengers, oxygen scavengers, polymerization inhibitors and combinations thereof.Type: GrantFiled: June 27, 2008Date of Patent: March 5, 2013Assignee: Arkema Inc.Inventors: Maher Y. Elsheikh, Philippe Bonnet, Benjamin Bin Chen, Brett L. Van Horn
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Publication number: 20120226081Abstract: The present invention is directed towards a method of purification of chloroolefins having 3 carbons and to a method to provide stable compositions of chloroolefins having 3 carbons. The chloroolefins are purified via the use of a solid absorbents for the removal of decomposition product such as phosgene and/or phosgene precursory from the reaction of the chloroolefins with oxygen. The chloroolefins stabilized against an increase of the phosgene level via the addition of inhibitors to the chloroolefins.Type: ApplicationFiled: November 12, 2010Publication date: September 6, 2012Inventors: Maher Y. Elsheikh, Philippe Bonnet
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Publication number: 20110162153Abstract: The present invention refers to the use of an adsorbent comprising particles comprising an amorphous phase and a crystalline phase for the purification of dry cleaning solvents. The present invention furthermore relates to a filter unit containing such an adsorbent. It also refers to a dry cleaner containing a filter according to the invention. Additionally, the present invention refers to a process for dry cleaning textiles, wherein an adsorbent according to the invention is used.Type: ApplicationFiled: May 14, 2009Publication date: July 7, 2011Inventors: Jose Antonio Ortiz Niembro, Eric Thomassiny Villaurrutia, Jorge Bello, Darren James Litle
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Patent number: 5744669Abstract: A process for the conversion of a halogenated organic stream containing trace quantities of organic nitrates to produce a stream comprising hydrogenated hydrocarbonaceous compounds free from organic nitrates and halogenated organic compounds by means of contacting the feed stream and hydrogen with a selective hydrogenation catalyst in a first hydrogenation zone at hydrogenation conditions to convert the organic nitrates into water-soluble nitrogen compounds while effectively minimizing the production of hydrogen halide compounds. The resulting effluent from the first hydrogenation zone is contacted with an aqueous scrubbing solution to recover at least a portion of the water-soluble nitrogen compounds in order to produce a stream containing halogenated organic compounds and essentially free of nitrogen compounds which is then introduced into a second hydrogenation zone operated at selected hydrogenation conditions to produce water-soluble hydrogen halide compounds and hydrogenated hydrocarbonaceous compounds.Type: GrantFiled: January 30, 1997Date of Patent: April 28, 1998Assignee: UOPInventors: Tom N. Kalnes, George R. Hibel, Chwu-Ching Jan
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Patent number: 5600041Abstract: A process for treating a stream containing halogenated organic compounds and having trace quantities of organic nitrates to produce a stream comprising halogenated organic compounds free from organic nitrates by the utilization of a hydrogenation zone operated at selective hydrogenation conditions in order to convert the organic nitrates to water-soluble nitrogen compounds while minimizing the production of hydrogen halide compounds. The resulting water-soluble nitrogen compounds are removed by extraction with an aqueous stream.Type: GrantFiled: February 13, 1995Date of Patent: February 4, 1997Assignee: UOPInventors: Chwu-Ching Jan, Tom N. Kalnes, George R. Hibel
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Patent number: 5198121Abstract: Water-containing mixtures of at least one hydrocarbon/halocarbon and hydrochloric acid, e.g., the methyl chloride feedstream in conventional process for the synthesis of chloromethanes, are desiccated by intimately contacting such mixtures with an effective drying amount of an essentially anhydrous drying agent that includes (i) a metal sulfate, chloride or perchlorate, or (ii) phosphorus pentoxide.Type: GrantFiled: November 26, 1991Date of Patent: March 30, 1993Assignee: AtochemInventors: Jean-Jacques Masini, Elie Ghenassia, Raymond Commandeur, Rene Clair, Jean-Louis Guillaumenq
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Patent number: 5175382Abstract: 1,2-Dichloroethane is prepared by reacting ethylene, hydrogen chloride and oxygen or an oxygen-containing gas in the presence of a copper-containing catalyst by a process in which first hydrogen chloride and oxygen or an oxygen-containing gas are reacted in the presence of the catalyst, then ethylene is added, and the mixture is reacted in the presence of the said catalyst.Type: GrantFiled: January 5, 1988Date of Patent: December 29, 1992Inventors: Werner Hebgen, Gerd Krome, Erhard Stahnecker
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Patent number: 4918253Abstract: 1,2,5,6,9,10-Hexabromocyclododecane (HBCD) is prepared in an anhydrous process in polar solvents, by the bromination of 1,5,9-cis, trans, trans-cyclododecatriene at relatively high temperatures.Type: GrantFiled: June 2, 1988Date of Patent: April 17, 1990Assignee: Bromine Compounds LimitedInventors: Joshua Hermolin, Amiram Groweiss, Aaron R. McMurray
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Patent number: 4876407Abstract: 2,3-Dichlorobutadiene-1,3 is produced by a continuous dehydrochlorination of 1,2,3-trichlorobutene-3 in a water miscible solvent in the presence of an alkali metal hydroxide. An evaporator is connected in the downstream of a reactor for the dehydrochlorination to recover the unreacted 1,2,3-trichlorobutene-3 and said water miscible solvent by an evaporation.Type: GrantFiled: June 11, 1985Date of Patent: October 24, 1989Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Akihiko Okuda, Yukinori Totake, Hideki Matsumura
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Patent number: 4482770Abstract: An improved process for the removal of acetylene from a hydrogen chloride stream in which the acetylene is converted to vinyl chloride by contact with a hydrochlorination catalyst, the improvement comprising, prior to contacting the stream with the hydrochlorination catalyst, contacting said stream with a catalyst comprising a noble metal, preferably of the platinum group, or salt or oxide thereof, supported or unsupported, at a temperature of between about 50.degree. and about 200.degree. C. and a pressure between about 8 and about 20 bar absolute.Type: GrantFiled: March 6, 1981Date of Patent: November 13, 1984Assignee: Wacker Chemie GmbHInventors: Ludwig Schmidhammer, Rudolf Strasser
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Patent number: 4418233Abstract: Impurities are removed from vinyl chloride by passing it over finely divided calcium oxide.Type: GrantFiled: May 13, 1982Date of Patent: November 29, 1983Assignee: BASF AktiengesellschaftInventors: Eckehard Danz, Gerd Krome