Copper Containing Catalyst Utilized Patents (Class 564/127)
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Patent number: 10850271Abstract: A method of stabilizing virgin ion exchange resin material is provided. The method includes rinsing virgin ion exchange resin material with deoxygenated water, introducing the rinsed virgin ion exchange resin material into a gas impermeable vessel and hermetically sealing the vessel. A vessel containing deoxygenated water and virgin ion exchange resin material is also provided. A method of facilitating water treatment in a site in need thereof by providing the gas impermeable vessel containing virgin ion exchange resin material and residual moisture from deoxygenated water is also provided.Type: GrantFiled: August 17, 2017Date of Patent: December 1, 2020Assignee: Evoqua Water Technologies LLCInventors: James Buckner, Gregory Bachman
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Publication number: 20100197965Abstract: This process is carried out in the presence of a solid catalyst comprising an active phase. The catalyst is formulated and the conversion is carried out in a medium essentially free of strong mineral acid.Type: ApplicationFiled: July 30, 2008Publication date: August 5, 2010Applicant: ADISSEO IRELAND LIMITEDInventors: Virginie Belliere-Baca, Jean-Claude Kiefer, Jean-Christophe Rossi
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Patent number: 6472561Abstract: Stable highly active supported copper based catalysts of copper oxide or elemental copper crystallites supported on mechanically stable aluminum oxide are disclosed. These catalysts are characterized by high surface area, small copper crystallite size, and high metal loading. The average crystallite size of the copper compound is from about 20 to about 300 Å, the copper loading is from about 10 to about 35 weight percent, the average particle diameter is from about 0.1 mm to about 10 mm, and the total surface area is from about 20 to about 400 square meters per gram. The catalysts are useful for hydration of nitrites to amides, especially hydration of acrylonitrile to acrylamide. The catalysts are distinguished by high mechanical stability, extended lifetime, and excellent resistance to hydration and copper leaching.Type: GrantFiled: September 28, 2001Date of Patent: October 29, 2002Assignee: Cytec Technology CorpInventors: Mark Donal Ryan, John Bradley Roucis, James Donald Carruthers
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Publication number: 20020040161Abstract: Stable highly active supported copper based catalysts of copper oxide or elemental copper crystallites supported on mechanically stable aluminum oxide are disclosed. These catalysts are characterized by high surface area, small copper crystallite size, and high metal loading. The average crystallite size of the copper compound is from about 20 to about 300 A, the copper loading is from about 10 to about 35 weight percent, the average particle diameter is from about 0.1 mm to about 10 mm, and the total surface area is from about 20 to about 400 square meters per gram. The catalysts are useful for hydration of nitrites to amides, especially hydration of acrylonitrile to acrylamide. The catalysts are distinguished by high mechanical stability, extended lifetime, and excellent resistance to hydration and copper leaching.Type: ApplicationFiled: September 28, 2001Publication date: April 4, 2002Applicant: CYTEC TECHNOLOGY CORP.Inventors: Mark Donal Ryan, John Bradley Roucis, James Donald Carruthers
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Patent number: 6100427Abstract: A process for producing an amide and/or acid from a nitrile comprises introducing a nitrile, as a first reactant, and a hydration compound, as a second reactant which is capable of reacting with the nitrile to convert it to its corresponding amide thus hydrating the nitrile and/or to convert it to its corresponding acid, into a treatment zone. The nitrile is subjected to catalytic distillation in the treatment zone in the presence of the hydration compound, to hydrate at least some of the nitrile to the corresponding amide and/or to form its corresponding acid. The amide and/or acid is withdrawn from the treatment zone.Type: GrantFiled: October 30, 1998Date of Patent: August 8, 2000Assignee: Catalytic Distillation TechnologiesInventors: Barend Christiaan Buurman Bezuidenhout, Zamile Denga, Rian Steyn, Petrus Johannes Steynberg, Nicolaus Ladislaus Stark
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Patent number: 5922912Abstract: A method is disclosed for the concentration of an aqueous acrylamide solution prepared by hydration of acrylonitrile or an aqueous acrylamide solution substantially free of acrylonitrile. The method makes use of a concentration apparatus at least a part of whose solution-contacting section is made of a copper-containing material. The concentration is conducted while introducing an oxygen-containing gas into the apparatus. Use of this method can prevent formation, adhering, accumulation and the like of popcorn polymers inside the concentration apparatus upon concentration of the aqueous acrylamide solution, and can also produce high-quality acrylamide.Type: GrantFiled: April 7, 1997Date of Patent: July 13, 1999Assignee: Mitsui Chemicals, Inc.Inventors: Yoshihiko Kambara, Mutsuo Matsumura, Michiaki Umeno, Yoshikazu Uehara, Koichi Asao
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Patent number: 5866611Abstract: Compounds of formula I, and their pharmaceutically acceptable salts, ##STR1## in which R.sup.1 and R.sup.2 are hydrogen, alkyl, cycloalkyl, cycloalkylalkyl, phenylalkyl or alkenyl; or NR.sup.1 R.sup.2 is a heterocyclic group; A is trimethylene optionally substituted by alkyl and the phenyl ring is optionally substituted by substituents such as halogeno, alkenyl, amino, cyano, ureido, alkyl, carbamoylalkyl, alkanoylamino, alkoxycarbonyl, N-alkyl-alkanoylamino, alkanoyl and amines thereof; are inhibitors of squalene synthese and hence useful in treating diseases in which a lowering of cholesterol is desirable. As well as the use of these compounds in medicine, novel compounds, processes for their preparation and pharmaceutical compositions are also referred to.Type: GrantFiled: May 19, 1994Date of Patent: February 2, 1999Assignee: Zeneca LimitedInventors: George Robert Brown, Murdoch Allan Eakin, Peter John Harrison, deceased, Keith Blakeney Mallion
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Patent number: 5817872Abstract: A copper catalyst obtained by reducing a precursor containing copper and aluminum and not containing substantially malachite and aluminum hydroxide permits preparation of amides with a high productivity and in a high selectivity by the hydration of nitrites.Type: GrantFiled: August 1, 1995Date of Patent: October 6, 1998Assignee: Mitsui Chemicals, Inc.Inventors: Tadatoshi Honda, Hiroshi Ohe, Shinichiro Ichikawa, Hisaharu Kuboyama, Satoru Miyazoe
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Patent number: 5534655Abstract: A process for preparing acrylamide is disclosed herein which comprises subjecting acrylonitrile to a hydration reaction in the presence of a copper-based catalyst, said process comprising the step of allowing a compound having an active methylene group and an acidic group in one molecule or a salt of the compound, for example, malonic acid, cyanoacetic acid or its salt to be present in a reaction system. According to the hydration reaction, it is possible to inhibit the secondary formation of impurities which cannot be heretofore removed, without any deterioration of a catalyst activity, and acrylamide can be obtained which is useful as a material for the manufacture of a high-molecular weight flocculant having a sufficiently large molecular weight and a good water solubility.Type: GrantFiled: February 23, 1995Date of Patent: July 9, 1996Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Yoshihiko Kambara, Yoshikazu Uehara, Takeya Abe, Koichi Asao
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Patent number: 5476883Abstract: This invention provides a process for the preparation of acrylamide. Acrylonitrile is treated through at least two purification steps in which acrylonitrile is brought into contact with a strongly-acidic cation exchange resin and then with a resin having primary and/or secondary amino groups or with activated carbon. The resulting acrylonitrile is subjected to hydration in the presence of a copper-base catalyst. The process of this invention can provide high-quality acrylamide even when acrylonitrile of ordinary quality is used, and permits preparation of a polyacrylamide suitable for use in the production of a coagulant having good water solubility or the like.Type: GrantFiled: July 13, 1994Date of Patent: December 19, 1995Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Takeya Abe, Yoshihiko Kambara
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Patent number: 5463123Abstract: There is disclosed a process for producing .alpha.-hydroxyisobutyramide by hydration reaction of acetone cyanohydrin in the presence of a catalyst consisting essentially of manganese dioxide which process comprises pretreating the catalyst with a reducing agent. The above process is capable of eliminating the catalyst clogging trouble due to the deposition of the by-produced oxamide and thus proceeding with long-term reaction with the stabilized catalyst performance.Type: GrantFiled: October 12, 1993Date of Patent: October 31, 1995Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Takako Uchiyama, Hirofumi Higuchi
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Patent number: 5041656Abstract: A catalyst useful in the practice of a process, in which (meth)acrylamide is prepared through the hydration reaction between (meth)acrylonitrile and water in a suspended liquid-phase bed of a Raney copper catalyst, has been obtained by leaching a Raney copper alloy in the presence of the Raney copper catalyst which has been deteriorated. The above useful catalyst has higher performances, compared with a catalyst obtained by conventionally leaching the Raney copper alloy alone, has satisfactory handling properties in settling and filtering, and can significantly reduced the amount of catalyst to be discarded.Type: GrantFiled: August 10, 1990Date of Patent: August 20, 1991Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Shiro Asano, Mareo Tokunaga, Yoshihiko Kambara
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Patent number: 5015766Abstract: A molten Raney copper alloy containing copper and a metal selected from Al, Si and Zn as major components and, if necessary, specific metals as minor components is solidified at a cooling rate of not less than 1.times.10.sup.2 K/sec by a rotary water atomizing process, water or gas atomizing process, single roll process or similar process. The Raney copper alloy thus obtained is leached to obtain a Raney copper catalyst. The resultant catalyst exhibits activity several times higher than that of conventional Raney copper catalysts in the reaction of acrylonitrile with water to give acrylamide.Type: GrantFiled: December 15, 1988Date of Patent: May 14, 1991Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Yoshihiko Kambara, Itsuo Oonaka, Koichi Asao, Kyoko Fukushima
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Patent number: 4959502Abstract: When making an amide by hydrolysis of a nitrile in an aqueous medium containing a Raney copper or other black copper catalyst, the hydrolysis reaction can be improved if the catalyst has been contacted with an aqueous solution of a water soluble vanadium compound followed by thorough rinsing before introduction into the aqueous medium.Type: GrantFiled: November 22, 1988Date of Patent: September 25, 1990Assignee: Allied Colloids Ltd.Inventors: David Farrar, Gerald P. Benn, Seraj A. M. Karolia
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Patent number: 4906776Abstract: When making an a amide by hydrolysis of a nitrile in an aqueous medium containing a Raney copper catalyst, the yield of amide can be increased and the yield of impurities can be decreased by including vanadium metal in the catalyst. The vanadium may be present as Raney vanadium often as an alloy in the Raney copper.Type: GrantFiled: May 19, 1987Date of Patent: March 6, 1990Assignee: Allied Colloids Ltd.Inventors: Gerald P. Benn, David Farrar, Seraj A. M. Karolia
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Patent number: 4820872Abstract: When making an unsaturated amide by hydrolysis of an unsaturated nitrile in the presence of a catalyst such as Raney copper and an oxidizing agent such as copper nitrate, by-product formation is reduced by including a reagent selected from reducing agents and acids that are substantially non-oxidizing relative to the said oxidizing agent. The preferred reagents are acidic buffers, especially acetic acid and copper acetate. Washing with such a buffer a Raney catalyst or other catalyst that is to be used for catalyzing the hydrolysis of an unsaturated nitrile to an unsaturated amide reduces the temperature surge that otherwise occurs upon addition of the catalyst to the reaction mixture.Type: GrantFiled: March 6, 1986Date of Patent: April 11, 1989Assignee: Allied Colloids Ltd.Inventors: David Farrar, Peter Flesher, Gerald Benn
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Patent number: 4801748Abstract: Amide compounds are efficiently prepared directly from nitriles, amines and water, using a reaction catalyst. The invention also can applied to the manufacture of polyamides, thereby realizing a simplified and rationalized process for polyamide synthesis. The catalyst employable is at least one metallic compound selected from the group consisting of Ru- Rh-, Zn-, Ni-, Mo-, Cu-, Co-, Ti-, Cr-, Zr-, Os-, Rd-, Se-, Fe-, Pb-, Hg-, V-, Cd-, Ir- and Pt-compounds.Type: GrantFiled: March 7, 1986Date of Patent: January 31, 1989Assignee: Osaka UniversityInventors: Shunichi Murahashi, Takeshi Naota
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Patent number: 4701558Abstract: A method for purifying an aqueous acrylamide solution by using activated carbon is disclosed. The method comprises contacting activated carbon with water having oxygen dissolved therein until the dissolved oxygen concentration in water after the contact increases to at least 0.5 ppm, and then contacting the aqueous acrylamide solution with the thus treated activated carbon. The method can prevent polymerization of acrylamide around activated carbon, and the resulting purified aqueous acrylamide solution requires no further purification, such as ion-exchanging.Type: GrantFiled: November 18, 1985Date of Patent: October 20, 1987Assignee: Nitto Chemical Industry Co., Ltd.Inventors: Yasumasa Yamaguchi, Masashi Nishida
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Patent number: 4686302Abstract: Nitriles of the general formula IR.sup.1 --CN (I)where R.sup.1 is a saturated or unsaturated, straight-chain, branched or cyclic alkyl radical, an aralkyl radical or an aryl radical, each of which is of not more than 20 carbon atoms and can be unsubstituted or further substituted, and (meth)acrylamide are prepared simultaneously by a process in which an aldoxime of the general formula IIIR.sup.1 --CH.dbd.NOH (III)where R.sup.1 has the above meanings, is heated at from 50.degree. to 180.degree. C. in the presence of a copper(II) carboxylate and of (meth)acrylonitrile.Type: GrantFiled: November 30, 1984Date of Patent: August 11, 1987Assignee: BASF AktiengesellschaftInventors: Franz Merger, Wolfgang Schwarz
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Patent number: 4593123Abstract: Process for the production of acrylamide or methacrylamide wherein acrylonitrile or methacrylonitrile is reacted with water and/or a water donor in the presence of Raney copper catalyst, which is protected from contact with oxygen.Type: GrantFiled: November 28, 1984Date of Patent: June 3, 1986Assignee: Mitsui Toatsu Chemicals, IncorporatedInventor: Fujio Matsuda
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Patent number: 4543423Abstract: A nitrile, such as acrylonitrile, is hydrated to the corresponding amide in the presence of a Raney copper catalyst that, before use in the reaction, is partially oxidized by contact with a controlled oxidizing system comprising oxygen, peroxide, iodate, chlorate, bromate or nitrate.Type: GrantFiled: October 28, 1982Date of Patent: September 24, 1985Assignee: Allied Colloids LimitedInventors: David Farrar, Peter Flesher
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Patent number: 4521620Abstract: A method of producing acrylamide from acrylonitrile in the presence of a metallic conversion catalyst which comprises contacting an oil-in-water emulsion of acrylonitrile, said water phase being the continuous phase and containing up to 7% acrylonitrile and said oil phase being the dispersed phase and containing the remaining acrylonitrile to be converted to acrylamide, whereby a substantial portion of the acrylonitrile is converted to acrylamide which remains in the aqueous phase of the oil-in-water emulsion, and then an additional low HLB emulsifier is added to invert the oil-in-water emulsion to a water-in-oil emulsion containing acrylamide.Type: GrantFiled: December 9, 1981Date of Patent: June 4, 1985Assignee: Nalco Chemical CompanyInventor: Kenneth G. Phillips
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Patent number: 4365090Abstract: In a process for producing acrylamide by hydrating acrylonitrile in the presence of a copper-based catalyst, the reaction is carried out in the presence of 30 to 10,000 ppm of acetone in the reaction solution. According to this process, the activity of the copper-based catalyst is maintained and the economic advantage of acrylamide production is enhanced.Type: GrantFiled: May 18, 1981Date of Patent: December 21, 1982Assignee: Mitsui Toatsu Chemicals, IncorporatedInventor: Shiro Asano
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Patent number: 4365091Abstract: A method for the production of acrylamide by a catalytic hydration of acrylonitrile characterized by using a compound oxide catalyst which is prepared by a precipitation process and represented by the formula,Ti.sub.a X.sub.b Y.sub.c O.sub.dwherein Ti is titanium, X is one of zinc, cadmium and copper, Y is either nickel or lanthanum and the atomic ratios a, b and c are 15 to 98, 2 to 85 and 0 to 20, respectively and d is the number of oxygen atoms satisfying the valence of the other elements.Type: GrantFiled: November 2, 1981Date of Patent: December 21, 1982Assignee: Sumitomo Chemical Company, LimitedInventors: Takenaka Masaaki, Tsutomu Takahashi, Tatuya Momobayashi
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Patent number: 4363752Abstract: A particulate alloy of 30% copper and 70% zinc is activated with alkali metal hydroxide to produce a catalyst which is useful for the catalytic hydrolysis of acrylonitrile to acrylamide under liquid phase conditions.Type: GrantFiled: June 8, 1981Date of Patent: December 14, 1982Assignee: Nalco Chemical CompanyInventors: Louis A. Goretta, Frederick J. Sibert
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Patent number: 4302597Abstract: In the reaction of conversion of nitriles to amides, more particularly, but not exclusively, acrylonitrile to acrylamide, the improvement consisting in the adoption, as a catalyst, of a copper-based catalyst which is prepared by reacting an organic copper chelate with aluminum-alkyl and/or an aluminum hydride. Higher yields and higher selectivity are obtained over the usual copper-based catalysts.Type: GrantFiled: August 1, 1979Date of Patent: November 24, 1981Assignee: Snamprogetti, S.p.A.Inventors: Giovanni Manara, Vittorio Fattore, Bruno Notari
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Patent number: RE31356Abstract: .[.Aliphatic nitriles.]. .Iadd.Olefinic nitriles of three to six carbon atoms .Iaddend.are converted to the corresponding amides by contacting the nitrile in the presence of water with a cupreous catalyst containing copper prepared by reducing copper hydroxide or a copper salt.Type: GrantFiled: February 26, 1981Date of Patent: August 23, 1983Assignee: The Dow Chemical Co.Inventors: Clarence E. Habermann, Ben A. Tefertiller
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Patent number: RE31430Abstract: Copper, copper oxide, copper-chromium oxide, copper-molybdenum oxide or mixtures thereof have been found to be excellent heterogeneous catalysts for the conversion of nitriles in the presence of water to the corresponding amides. Using one such catalyst in a continuous flow reactor, acrylonitrile was almost 100% converted to acrylamide during more than six weeks of continuous operation.Type: GrantFiled: February 26, 1981Date of Patent: October 25, 1983Assignee: The Dow Chemical Co.Inventors: Clarence E. Habermann, Ben A. Tefertiller
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Patent number: RE32640Abstract: Aliphatic nitriles are converted to the corresponding amides by contacting the nitrile in the presence of water with a cupreous catalyst containing copper metal.Type: GrantFiled: December 23, 1985Date of Patent: April 12, 1988Assignee: The Dow Chemical CompanyInventors: Clarence E. Habermann, Ben A. Tefertiller, Ralph E. Friedrich