And An Organic Hydroxy Containing Reactant (h Of -oh May Be Replaced By A Group Ia Or Iia Light Metal) Patents (Class 568/71)
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Patent number: 12162823Abstract: A method for preparing a compound of formula RSH where R represents an alkyl group, by gas-phase catalytic reaction of hydrogen sulfide with a compound of formula ROH, in the presence of a solid catalyst, according to which method the reaction is performed in the presence of a catalyst which includes one or several pure or mixed rare-earth oxide(s), one or several pure or mixed rare-earth sulfide(s), or one or several pure or mixed rare-earth oxysulfide(s). When the rare earth is lanthanum, the catalyst is a mixed oxide of lanthanum and of at least one metal selected from rare earths or not and when the rare earth is cerium, the catalyst is supported on an alumina.Type: GrantFiled: January 16, 2020Date of Patent: December 10, 2024Assignee: ADISSEO FRANCE S.A.S.Inventors: Virginie Belliere-Baca, Virginie Harle, Sylvette Brunet, Olivier Peruch
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Patent number: 11845716Abstract: Processes for removing carbon disulfide from product streams containing a sulfide compound are performed by contacting the product stream with an alkanolamine and converting the carbon disulfide to a higher boiling point product, thereby reducing or eliminating carbon disulfide from the product stream. Subsequent removal of the higher boiling point product via distillation can lead to a purified sulfide stream with high purity.Type: GrantFiled: June 18, 2020Date of Patent: December 19, 2023Assignee: Chevron Phillips Chemical Company LPInventors: Kenneth M. Lassen, Michael S. Matson, Daniel M. Hasenberg, Dave C. Schwierman
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Patent number: 9725335Abstract: Techniques for reduction of copper from aqueous streams using an iron promoted activated alumina are disclosed. An adsorbent media composition that reduces copper levels in an aqueous feed stream includes an iron containing activated alumina. A process for reducing copper levels in an aqueous fluid using an iron promoted activated alumina sorption media includes contacting the aqueous fluid containing a copper contaminant with the iron promoted activated alumina to achieve reductions in copper from the aqueous fluid.Type: GrantFiled: March 11, 2014Date of Patent: August 8, 2017Assignee: THE FRAZER AND CRUICKSHANK LIVING TRUST DATED 3/24/1982Inventors: Nancy S. Sherwood, Duane R. Steelman
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Patent number: 9067872Abstract: A process for compressing a hydrogen-sulfide-comprising gas stream, which comprises (i) compressing the hydrogen-sulfide-comprising gas stream in a compressor, (ii) flushing the compressor with a mixture comprising dialkyl polysulfides, dialkyl disulfides and at least one amine; a process for producing sulfur compounds, selected from the group consisting of alkylmercaptans, dialkyl disulfides and alkanesulfonic acids, which comprises the conversion of hydrogen-sulfide-comprising gas streams, wherein the hydrogen-sulfide-comprising gas streams are compressed according to the process comprising steps i) and ii); and also the use of a mixture comprising dialkyl polysulfides, dialkyl disulfides and at least one amine for removing sulfur deposits which occur in the compression of hydrogen-sulfide-comprising gas streams.Type: GrantFiled: December 22, 2009Date of Patent: June 30, 2015Assignee: BASF SEInventors: Andreas Woelfert, Frank Grzonkowski, Harald Jachow, Guenter Renz
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Patent number: 8440736Abstract: The present invention provides modified multifunctional thiol-ene monomers wherein one or more thiols are reacted with a Michael addition reactive double bond compound. The present invention further discloses photocurable thiol-ene formulations comprising thiol-ene monomers including the modified multifunctional thiols. The present invention further discloses photocurable thiol-ene formulations comprising thiol-ene monomers and Michael addition reactive double bond molecules and a Michael catalyst. The formulations of the present invention can be photocured to make films or coatings. In a further disclosure, the formulations, including those comprised of unmodified multifunctional thiols and multifunctional enes, are photocured to form films applied to non-flexible or flexible polymer or non-polymer substrates suitable for food packaging, electronic products, optical products and other applications and free-standing films.Type: GrantFiled: April 6, 2009Date of Patent: May 14, 2013Assignee: University of Southern MississippiInventors: Charles E. Hoyle, Sergei Nazarenko, Huanyu Wei
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Publication number: 20110263894Abstract: A process for compressing a hydrogen-sulfide-comprising gas stream, which comprises (i) compressing the hydrogen-sulfide-comprising gas stream in a compressor, (ii) flushing the compressor with a mixture comprising dialkyl polysulfides, dialkyl disulfides and at least one amine; a process for producing sulfur compounds, selected from the group consisting of alkylmercaptans, dialkyl disulfides and alkanesulfonic acids, which comprises the conversion of hydrogen-sulfide-comprising gas streams, wherein the hydrogen-sulfide-comprising gas streams are compressed according to the process comprising steps i) and ii); and also the use of a mixture comprising dialkyl polysulfides, dialkyl disulfides and at least one amine for removing sulfur deposits which occur in the compression of hydrogen-sulfide-comprising gas streams.Type: ApplicationFiled: December 22, 2009Publication date: October 27, 2011Applicant: BASF SEInventors: Andreas Woelfert, Frank Grzonkowski, Harald Jachow, Guenter Renz
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Patent number: 8022254Abstract: The invention relates to a halide-containing alkali tungstate catalyst for the synthesis of alkylmercaptans from alkanols and hydrogen sulfide, and to a process for the preparation of this catalyst.Type: GrantFiled: December 15, 2005Date of Patent: September 20, 2011Assignee: Evonik Degussa GmbHInventors: Hubert Redlingshöfer, Christoph Weckbecker, Andreas Dörflein
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Publication number: 20110015443Abstract: The invention relates to a process for continuously preparing methyl mercaptan by reacting a mixture comprising carbon compounds with sulfur and hydrogen, wherein the carbon disulfide and hydrogen sulfide compounds which form are subsequently converted to methyl mercaptan.Type: ApplicationFiled: July 15, 2010Publication date: January 20, 2011Applicant: Evonik Degussa GmbHInventors: Jan-Olaf Barth, Christoph Weckbecker, Hubert Redlingshöefer, Johannes A. Lercher, Christoph Kaufmann
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Patent number: 7759523Abstract: The invention relates to a catalyst containing alkali tungstate for the synthesis of alkylmercaptanes from alkanols and hydrogen sulphide, in addition to a method for the production of said catalyst, wherein the molar ratio of alkali to tungstan is <2:1.Type: GrantFiled: July 5, 2005Date of Patent: July 20, 2010Assignee: Evonik Degussa GmbHInventors: Hubert Redlingshöfer, Christoph Weckbecker, Klaus Huthmacher
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Patent number: 7691776Abstract: The invention relates to an oxidic catalyst containing cesium and tungsten for the synthesis of alkyl mercaptans from alkanols and hydrogen sulfide, and to a process for the production of this catalyst, wherein the molar ratio of cesium to tungsten is <2:1.Type: GrantFiled: August 14, 2009Date of Patent: April 6, 2010Assignee: Evonik Degussa GmbHInventors: Hubert Redlingshöfer, Christoph Weckbecker, Andreas Dörflein, Michael Rückriegel
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Patent number: 7687667Abstract: The invention relates to a catalyst for the synthesis of methyl mercaptan from hydrogen sulfide and methanol and to a process for preparing methyl mercaptans. The catalyst comprises active aluminum oxide on which an alkali metal tungstate and ammonium salts have been deposited.Type: GrantFiled: April 23, 2004Date of Patent: March 30, 2010Assignee: BASF SEInventors: Alexandra Brand, Veronika Quaschning
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Publication number: 20090306432Abstract: The invention relates to an oxidic catalyst containing cesium and tungsten for the synthesis of alkyl mercaptans from alkanols and hydrogen sulfide, and to a process for the production of this catalyst, wherein the molar ratio of cesium to tungsten is <2:1.Type: ApplicationFiled: August 14, 2009Publication date: December 10, 2009Applicant: Evonik Degussa GmbHInventors: HUBERT REDLINGSHÖFER, CHRISTOPH WECKBECKER, ANDREAS DÖRFLEIN, MICHAEL RÜCKRIEGEL
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Patent number: 7622613Abstract: The present invention relates to a thiol compound represented by formula (1): wherein R1, R2 and n have the same meanings as in the specification, method for producing the compound, and to a photosensitive composition and a black matrix resist composition using the same which have high sensitivity and excellent property of retaining a line width in fine line patterns at the time of alkaline development, that is, being excellent in development latitude.Type: GrantFiled: October 25, 2005Date of Patent: November 24, 2009Assignee: Showa Denko K.K.Inventors: Hirotoshi Kamata, Mina Onishi, Katsumi Murofushi
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Patent number: 7582800Abstract: The invention relates to a process for preparing alkyl mercaptans by catalytic gas phase reaction of alkanols and hydrogen sulphide over alkali metal tungstates, the reaction being performed in at least two successive reaction zones which contain catalysts of different activity and selectivity.Type: GrantFiled: July 11, 2007Date of Patent: September 1, 2009Assignee: Degussa GmbHInventors: Hubert Redlingshoefer, Christoph Weckbecker
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Publication number: 20090054691Abstract: The present invention relates to a process for continuously preparing methyl mercaptan from hydrogen sulphide and methanol in a direct connection with the preparation of hydrogen sulphide.Type: ApplicationFiled: August 22, 2006Publication date: February 26, 2009Inventors: Hubert Redlingshofer, Stephan Kretz, Caspar-Heinrich Finkeldei, Christoph Weckbecker, Wolfgang Bock, Klaus Huthmacher
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Patent number: 7368611Abstract: The invention relates to a process for the continuous production of methylmercaptan by reacting a starting gas mixture of methanol and hydrogen sulphide in the gas phase at a reaction temperature between 200 and 600° C. and an operating pressure of 1.5 to 40 bar on a catalyst in a multi-bed reactor.Type: GrantFiled: April 6, 2006Date of Patent: May 6, 2008Assignee: Degussa AGInventors: Jan-Olaf Barth, Hubert Redlingshöfer, Christoph Weckbecker, Klaus Huthmacher
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Publication number: 20080033213Abstract: The invention relates to a catalyst containing alkali tungstate for the synthesis of alkylmercaptanes from alkanols and hydrogen sulphide, in addition to a method for the production of said catalyst, wherein the molar ratio of alkali to tungstan is<2:1.Type: ApplicationFiled: July 5, 2005Publication date: February 7, 2008Inventors: Hubert Redlingshofer, Christoph Weckbecker, Klaus Huthmacher
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Patent number: 7199270Abstract: The invention relates to a method for the separation of methyl mercaptan from reaction gas mixtures obtained by means of the catalytic conversion of H2S with methanol, by means of converting the methyl mercaptan into MMP in the presence of the byproducts with acrolein, and separating the same.Type: GrantFiled: December 17, 2004Date of Patent: April 3, 2007Assignee: Degussa AGInventors: Alexander Möller, Wolfgang Böck, Stephan Rautenberg, Hans-Joachim Hasselbach, Wolfgang Taugner, Harald Heinzel, Theo Zarfl
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Patent number: 6198003Abstract: A highly efficient method of producing alkyl mercaptan and/or dialkyl monosulfides which involves employing carbon dioxide as an internal coolant is described. Only negligible amounts of carbonyl sulfide were formed. In addition, relatively easy separation of carbon dioxide from the reaction mixture facilitates an efficient coolant recycle process, giving a simple and effective mode of temperature control.Type: GrantFiled: April 20, 1999Date of Patent: March 6, 2001Assignee: Albemarle CorporationInventors: Kaung-Far Lin, James E. Boone, Michael D. Matthews, John C. Prindle, Jr., Sharon D. Booth McGee
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Patent number: 5898012Abstract: A composition comprises at least one inorganic oxide and an oxygen-containing metal compound selected from the group consisting of a metal hydroxide, a metal oxide, and combinations of any two or more thereof. The composition can be optionally supported on a support such as an alumina. A process for producing mercaptans comprises contacting an alcohol with hydrogen sulfide in the presence of the composition under a condition sufficient to produce a mercaptan.Type: GrantFiled: October 23, 1997Date of Patent: April 27, 1999Assignee: Phillips Petroleum CompanyInventors: Dean E. Stinn, Harold J. Swindell, Donald H. Kubicek, Marvin M. Johnson
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Patent number: 5886230Abstract: A process for continuous production of methyl mercaptan by catalytic reaction of methanol and hydrogen sulfide. Significant improvements in the pretreatment of the feed gas mixture and in utilization of the heat of reaction and the heat content of the product gas mixture. The energy required to vaporize the methanol is derived partly from utilization of the heat of compression of the hydrogen sulfide gas and from the heat content of the product gas leaving the reactor. The heat of reaction is utilized to heat the feed gas mixture to the reaction temperature, with the help of an external gas heater.Type: GrantFiled: June 30, 1997Date of Patent: March 23, 1999Assignee: Degussa AktiengesellschaftInventors: Willi Hofen, Wolfgang Boeck, Stephan Rautenberg, Joerg Sauer, Dietrich Arntz, Ralf Goedecke, Wolfgang Taugner, Raymund Sonnenschein
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Patent number: 5874630Abstract: Disclosed is a method of making a mercaptan by reacting an aliphatic alcohol with hydrogen sulfide in a continuous gaseous phase reaction. The reaction is performed in the presence of a catalyst which comprises a catalytically active carrier that contains base and/or acid active sites, an alkali metal or alkaline earth metal bicarbonate, carbonate, oxide, or hydroxide, and a transition metal acid or alkali metal or alkaline earth metal salt thereof. Selectivities of close to 100% are obtained.Type: GrantFiled: January 6, 1998Date of Patent: February 23, 1999Assignee: Occidental Chemical CorporationInventors: Charles M. Cook, David E. Albright, Michael C. Savidakis
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Patent number: 5866721Abstract: A process for separating the product gas mixture from the catalytic synthesis of methyl mercaptan. Because of improved separation of the product gas mixture into its components, less hydrogen sulfide and methyl mercaptan are lost in discharging the inert gases than in the known process. The inert gases can be burned without after-treatment of the exhaust gas. Likewise, the process water that is discharged is less contaminated with polysulfides.Type: GrantFiled: June 30, 1997Date of Patent: February 2, 1999Assignee: Degussa AktiengesellschaftInventors: Willi Hofen, Wolfgang Boeck, Stephan Rautenberg, Joerg Sauer, Dietrich Arntz, Ralf Goedecke, Wolfgang Taugner, Raymund Sonnenschein
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Patent number: 5852219Abstract: A catalyst for the synthesis of methyl mercaptan from hydrogen sulfide and methanol, as well as a process for preparing the catalyst. The catalyst contains active aluminum oxide on which 15% to 40% by weight cesium tungstate is deposited as the activator. The activator, cesium tungstate, gives an unexpected increase in activity and selectivity as compared with potassium tungstate, which is used exclusively at the present state of the art.Type: GrantFiled: June 30, 1997Date of Patent: December 22, 1998Assignee: Degussa AktiengesellschaftInventors: Joerg Sauer, Wolfgang Boeck, Lukas von Hippel, Werner Burkhardt, Stephan Rautenberg, Dietrich Arntz, Willi Hofen
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Patent number: 5847223Abstract: A process for the preparation of methyl mercaptan which comprises reacting methanol and hydrogen sulphide in the vapor phase in the presence of a catalyst, wherein the catalyst is an alkali metal carbonate deposited on alumina, and wherein the reaction is carried out at a temperature below 350.degree. C.Type: GrantFiled: June 21, 1996Date of Patent: December 8, 1998Assignee: Rhone-Poulenc Nutrition AnimaleInventors: Herve Ponceblanc, Fran.cedilla.ois Tamburro
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Patent number: 5283369Abstract: A process for producing a novel catalyst wherein an amorphous alumina gel is formed at least on the surface of an aluminum-containing material, the gel is heated to form crystalline .alpha.- or .beta.-alumina trihydrate and the trihydrate is sulfided, the product of said process, and the method of producing mercaptans from alcohols or ethers and hydrogen sulfide at elevated temperature in the presence of said novel catalyst, are disclosed herein.Type: GrantFiled: March 24, 1992Date of Patent: February 1, 1994Assignee: Elf Atochem North America, Inc.Inventors: Roger T. Clark, James A. Elkins, Jr.
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Patent number: 5026915Abstract: A continuous process is disclosed for preparing dialkyl disulfides by reacting an alkyl alcohol and hydrogen sulfide in one reaction zone, and then passing the reactor effluent into a second reaction zone where it is reacted with elemental sulfur in the presence of a solid, particulate catalyst.Type: GrantFiled: March 16, 1990Date of Patent: June 25, 1991Assignee: Atochem North America, Inc.Inventors: Bernard Buchholz, Edward J. Dzierza, John R. Baltrus
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Patent number: 4482744Abstract: A process is provided wherein methanol is converted over spent shale to products such as mercaptans, disulfides and ethylene.Type: GrantFiled: November 12, 1982Date of Patent: November 13, 1984Assignee: Mobil Oil CorporationInventor: Costandi A. Audeh
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Patent number: 4302605Abstract: A process is provided for preparing dialkyl sulfides by reacting alkanols and hydrogen sulfide in the presence of a zeolite catalyst that contains a reduced amount of alkali metal cations.Type: GrantFiled: April 18, 1980Date of Patent: November 24, 1981Assignee: Pennwalt CorporationInventors: Bernard Buchholz, Edward J. Dzierza