Patents by Inventor William E. Slinkard
William E. Slinkard has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10450254Abstract: The present invention relates to a process for simultaneously consecutive preparation of polyols by base-catalyzed reaction of at least two different mid-chain aldehydes with formaldehyde. The simultaneous consecutive mode of operation makes it possible to achieve high conversions and high selectivities for both aldehydes, with additional achievement of a distinct reduction in the amount of unreacted formaldehyde remaining. This leads to improved process economics, since the energy costs for workup of the formaldehyde stream are distinctly reduced.Type: GrantFiled: September 5, 2017Date of Patent: October 22, 2019Assignee: OXEA GMBHInventors: Guido D. Frey, Melanie Bothe, Heinz Strutz, William E. Slinkard
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Publication number: 20190241492Abstract: The present invention relates to a process for simultaneously consecutive preparation of polyols by base-catalysed reaction of at least two different mid-chain aldehydes with formaldehyde. The simultaneous consecutive mode of operation makes it possible to achieve high conversions and high selectivities for both aldehydes, with additional achievement of a distinct reduction in the amount of unreacted formaldehyde remaining. This leads to improved process economics, since the energy costs for workup of the formaldehyde stream are distinctly reduced.Type: ApplicationFiled: September 5, 2017Publication date: August 8, 2019Inventors: Guido D. FREY, Melanie BOTHE, Heinz STRUTZ, William E. Slinkard
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Publication number: 20170190646Abstract: A multistage tubular reaction system and method for preparing methylol derivatives of an aldehyde includes a tubular reaction system with a plurality of successive reactor stages comprising a plurality of jacketed reaction tubes provided with a cooling system adapted to control flow of a cooling medium through said jacketed reaction tubes. The cooling medium flow is controlled independently in different stages in response to temperature measurements in the reaction system to regulate temperature. In order to further reduce temperature spikes and byproduct generation, aldehyde is stepwise added to the production stream at a plurality of feed ports proximate to reaction tubes equipped with tube inserts to enhance mixing and heat transfer.Type: ApplicationFiled: July 23, 2014Publication date: July 6, 2017Inventors: Michael J. Stone, Howard W. Brooks, Heinz Strutz, Donald K. Raff, Guido D. Frey, Norman Nowotny, Marcos L. Schroeder, Fred Gaytan, Tracy Kevin Hunt, William E. Slinkard
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Patent number: 9676689Abstract: A multistage tubular reaction system and method for preparing methylol derivatives of an aldehyde includes a tubular reaction system with a plurality of successive reactor stages comprising a plurality of jacketed reaction tubes provided with a cooling system adapted to control flow of a cooling medium through said jacketed reaction tubes. The cooling medium flow is controlled independently in different stages in response to temperature measurements in the reaction system to regulate temperature. In order to further reduce temperature spikes and byproduct generation, aldehyde is stepwise added to the production stream at a plurality of feed ports proximate to reaction tubes equipped with tube inserts to enhance mixing and heat transfer.Type: GrantFiled: July 23, 2014Date of Patent: June 13, 2017Assignee: OXEA BISHOP LLCInventors: Michael J. Stone, Howard W. Brooks, Heinz Strutz, Donald K. Raff, Guido D. Frey, Norman Nowotny, Marcos L. Schroeder, Fred Gaytan, Tracy Kevin Hunt, William E. Slinkard
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Publication number: 20170050907Abstract: A multistage tubular reaction system and method for preparing methylol derivatives of an aldehyde includes a tubular reaction system with a plurality of successive reactor stages comprising a plurality of jacketed reaction tubes provided with a cooling system adapted to control flow of a cooling medium through said jacketed reaction tubes. The cooling medium flow is controlled independently in different stages in response to temperature measurements in the reaction system to regulate temperature. In order to further reduce temperature spikes and byproduct generation, aldehyde is stepwise added to the production stream at a plurality of feed ports proximate to reaction tubes equipped with tube inserts to enhance mixing and heat transfer.Type: ApplicationFiled: July 23, 2014Publication date: February 23, 2017Inventors: Michael J. Stone, Howard W. Brooks, Heinz Strutz, Donald K. Raff, Guido D. Frey, Norman Nowotny, Marcos Schroeder, Fred Gaytan, Tracy Kevin Hunt, William E. Slinkard
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Patent number: 9394218Abstract: A multistage tubular reaction system and method for preparing methylol derivatives of an aldehyde includes a tubular reaction system with a plurality of successive reactor stages provided with a formaldehyde containing feed stream. The system includes multiple feed ports for the staged addition of C2 or higher condensible aldehyde and/or base to the formaldehyde containing stream at a plurality of successive feed points to provide a production stream, which is progressively provided with additional reactants as the production stream advances through the successive reaction stages. Advantages include better temperature control and reduced byproduct formation.Type: GrantFiled: July 23, 2014Date of Patent: July 19, 2016Assignee: OXEA BISHOP LLCInventors: Heinz Strutz, Donald K. Raff, Guido D. Frey, Norman Nowotny, Marcos Schroeder, Fred Gaytan, Tracy Kevin Hung, William E. Slinkard
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Publication number: 20160145179Abstract: A multistage tubular reaction system and method for preparing methylol derivatives of an aldehyde includes a tubular reaction system with a plurality of successive reactor stages provided with a formaldehyde containing feed stream. The system includes multiple feed ports for the staged addition of C2 or higher condensible aldehyde and/or base to the formaldehyde containing stream at a plurality of successive feed points to provide a production stream, which is progressively provided with additional reactants as the production stream advances through the successive reaction stages. Advantages include better temperature control and reduced byproduct formation.Type: ApplicationFiled: July 23, 2014Publication date: May 26, 2016Applicant: OXEA BISHOP LLCInventors: Heinz Strutz, Donald K. Raff, Guido D. Frey, Norman Nowotny, Marcos Schroeder, Fred Gaytan, Tracy Kevin Hung, William E. Slinkard
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Patent number: 6316679Abstract: A process for treating a composition containing a substantial proportion of trimethyflolpropane bis-monolinear formal (TMP-BMLF) or trimethylolethane bis-monolinear formal (TME-BMLF), e.g., a heavy ends residue obtained from the purification of a crude trimethylolpropane (TMP) or trimethylolethane (TME) product, wherein the composition is contacted at an elevated temperature with a strong acid catalyst, e.g., methanesulfonic acid, to produce a composition containing significantly increased amounts of TMP and trimethylolpropane monocyclic formal (TMP-MCF) or TME and trimethylolethane monocyclic formal (TME-MCF) respectively. Also disclosed is a process for reacting TMP-MCF or TME-MCF, either in substantially pure form or as present in the light ends overhead stream obtained in a finishing treatment of crude TMP or TME, with a monohydric or dihydric alcohol, e.g., ethylene glycol, in the presence of a strong acid catalyst to obtain additional TMP or TME and an acetal by-product, e.g.Type: GrantFiled: May 26, 2000Date of Patent: November 13, 2001Assignee: Celanese International CorporationInventors: Carolyn Supplee, Jerry A. Broussard, Tobin J. Marks, William E. Slinkard, Edwards G. Zey
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Patent number: 6110998Abstract: A latex containing particles of a film-forming polymer emulsified or suspended in an aqueous medium and a coalescing solvent comprising trimethylolpropane monocyclic formal (TMPMCF) or trimethylolethane monocyclic formal (TMEMCF) is disclosed.Type: GrantFiled: May 8, 1998Date of Patent: August 29, 2000Assignee: Celanese International CorporationInventors: William E. Slinkard, Donald K. Raff
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Patent number: 6096905Abstract: A process for treating a composition containing a substantial proportion of trimethylolpropane bis-monolinear formal (TMP-BMLF) or trimethylolethane bis-monolinear formal (TME-BMLF), e.g., a heavy ends residue obtained from the purification of a crude trimethylolpropane (TMP) or trimethylolethane (TME) product, wherein the composition is contacted at an elevated temperature with a strong acid catalyst, e.g., methanesulfonic acid, to produce a composition containing significantly increased amounts of TMP and trimethylolpropane monocyclic formal (TMP-MCF) or TME and trimethylolethane monocyclic formal (TME-MCF) respectively.Type: GrantFiled: June 1, 1999Date of Patent: August 1, 2000Assignee: Celanese International CorporationInventors: Carolyn Supplee, Tobin J. Marks, William E. Slinkard, Edward G. Zey
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Patent number: 4332971Abstract: Olefin oxidation catalysts having improved attrition resistance are produced by incorporating a substantially uniform-appearing coating of a partially calcined catalytic material onto an inert porous support containing sorbed aqueous silica sol and then completing the calcination of the catalyst. Such catalysts are useful in a variety of exothermic chemical processes, including vapor phase oxidation of olefinically unsaturated hydrocarbons to the corresponding unsaturated aldehydes, especially propylene to acrolein.Type: GrantFiled: December 15, 1980Date of Patent: June 1, 1982Assignee: Celanese CorporationInventors: Charles A. Dalton, William E. Slinkard
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Patent number: 4328365Abstract: The present invention provides a supported catalyst for use in a vapor phase reaction for the high yield conversion of lower aliphatic hydrocarbons such as butane to corresponding monocarboxylic acids such as acetic acid. The catalyst is prepared by the carbon monoxide reduction of a vanadium pentoxide-impregnated, inert porous carrier.Type: GrantFiled: October 20, 1980Date of Patent: May 4, 1982Assignee: Celanese CorporationInventors: William E. Slinkard, Anthony B. Baylis
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Patent number: 4317927Abstract: Catalysts having improved attrition resistance are produced by incorporating a substantially uniform appearing coating of completely calcined, catalytically active oxide material onto an inert porous support containing sorbed aqueous silica sol. Such catalysts are useful in the gas phase oxidation of unsaturated aldehydes to unsaturated acids, especially acrolein to acrylic acid.Type: GrantFiled: September 15, 1980Date of Patent: March 2, 1982Assignee: Celanese CorporationInventors: Charles A. Dalton, William E. Slinkard
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Patent number: 4276196Abstract: Olefin oxidation catalysts having improved attrition resistance are produced by incorporating a substantially uniform-appearing coating of a partially calcined catalytic material onto an inert porous support containing sorbed aqueous silica sol and then completing the calcination of the catalyst. Such catalysts are useful in a variety of exothermic chemical processes, including vapor phase oxidation of olefinically unsaturated hydrocarbons to the corresponding unsaturated aldehydes, especially propylene to acrolein.Type: GrantFiled: August 9, 1979Date of Patent: June 30, 1981Assignee: Celanese CorporationInventors: Charles A. Dalton, William E. Slinkard
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Patent number: 4257921Abstract: A butene may be oxidized in the vapor phase at elevated temperatures to produce acetic acid by reacting the butene with molecular oxygen in the presence of a catalyst comprising a composition of the empirical formula:V.sub.f Sb.sub.g X.sub.h Me.sub.i O.sub.jwherein V is vanadium, Sb is antimony, and O is oxygen, wherein X represents a metal which is one or more of Bi, Nb, Co, Nd, Sm, Zn, Zr or Cr, and wherein Me represents a metal which is one or more of Al, Fe or Sn, the metal represented by Me being optionally present.Type: GrantFiled: November 23, 1979Date of Patent: March 24, 1981Assignee: Celanese CorporationInventors: William E. Slinkard, Anthony B. Baylis
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Patent number: 4251393Abstract: Catalysts having improved attrition resistance are produced by incorporating a substantially uniform appearing coating of completely calcined, catalytically active oxide material onto an inert porous support containing sorbed aqueous silica sol. Such catalysts are useful in the gas phase oxidation of unsaturated aldehydes to unsaturated acids, especially acrolein to acrylic acid.Type: GrantFiled: May 29, 1979Date of Patent: February 17, 1981Assignee: Celanese CorporationInventors: Charles A. Dalton, William E. Slinkard
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Patent number: 4219671Abstract: A butene may be oxidized in the vapor phase at elevated temperatures to produce acetic acid by reacting the butene with molecular oxygen in the presence of a catalyst comprising a composition of the empirical formula:V.sub.f Sb.sub.g X.sub.h Me.sub.i O.sub.Jwherein V is vanadium, Sb is antimony, and O is oxygen, wherein X represents a metal which is one or more of Bi, Nb, Co, Nd, Sm, Zn, Zr or Cr, and wherein Me represents a metal which is one or more of Al, Fe or Sn, the metal represented by Me being optionally present.Type: GrantFiled: August 29, 1977Date of Patent: August 26, 1980Assignee: Celanese CorporationInventors: William E. Slinkard, Anthony B. Baylis
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Patent number: 4201868Abstract: A process for the reacting of methanol with carbon monoxide and hydrogen to produce increased amounts of methyl acetate, acetaldehyde and dimethyl acetal utilizing a catalyst comprising a cobalt carbonyl in complex with an organic nitrogen ligand.Type: GrantFiled: February 25, 1977Date of Patent: May 6, 1980Assignee: Celanese CorporationInventor: William E. Slinkard
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Patent number: 4200764Abstract: The present invention provides an unsupported catalyst with superior crush strength for use in a vapor phase reaction for the high yield conversion of lower aliphatic hydrocarbons such as n-butane to corresponding monocarboxylic acids used as acetic acid. The catalyst is prepared by the reduction of a vanadium oxide containing chromium catalyst.Type: GrantFiled: December 12, 1977Date of Patent: April 29, 1980Assignee: Celanese CorporationInventors: William E. Slinkard, Anthony B. Baylis, Michael P. Hughes
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Patent number: 4195188Abstract: The present invention provides a highly efficient process for use in the high pressure catalytic vapor phase reaction for the high yield conversion of lower aliphatic hydrocarbons such as n-butane to corresponding monocarboxylic acids such as acetic acid. The oxidation reaction takes place under hydrocarbon rich conditions. The increased efficiency in this process is realized by the judicious use of steam and the catalyst systems set forth in the instant invention.Type: GrantFiled: December 12, 1977Date of Patent: March 25, 1980Assignee: Celanese CorporationInventors: William E. Slinkard, Anthony B. Baylis, Peter B. DeGroot, Michael P. Hughes