Patents by Inventor Thomas C. Eisenschmid

Thomas C. Eisenschmid 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).

  • Patent number: 8598389
    Abstract: A method of controlling a hydroformylation process for producing normal (N) and iso (I) aldehydes at a N:I ratio, the process comprising contacting an olefinically unsaturated compound, e.g., propylene, with synthesis gas and a catalyst comprising a transition metal, e.g., rhodium, and an organopolyphosphite and an organomonophosphite ligand, the contacting conducted at hydroformylation conditions comprising a synthesis gas partial pressure, the method comprising increasing the synthesis gas partial pressure in the first reaction zone to decrease the N:I ratio or decreasing the synthesis gas partial pressure in the first reaction zone to increase the N:I ratio.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: December 3, 2013
    Assignee: Dow Technology Investments
    Inventors: Thomas C. Eisenschmid, Jeffrey S. Sawrey, Glenn A. Miller, Michael A. Brammer
  • Patent number: 8598390
    Abstract: A method of controlling an in-series, multiple, e.g., two, reaction zone, hydroformylation process for producing normal (N) and iso (I) aldehydes at a N:I ratio, the process comprising contacting an olefinically unsaturated compound with synthesis gas and a catalyst comprising (A) a transition metal, e.g., rhodium, (B) an organobisphosphite ligand, and (C) an organomonophosphite ligand, the contacting conducted in first and subsequent reaction zone(s) and at hydroformylation conditions comprising a transition metal concentration in each zone, the method comprising decreasing the transition metal concentration in the first reaction zone to decrease the N:I ratio or increasing the transition metal concentration in the first reaction zone to increase the N:I ratio.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: December 3, 2013
    Assignee: Dow Technology Investments LLC
    Inventors: Thomas C. Eisenschmid, Jeffrey S. Sawrey, Glenn A. Miller, Michael A. Brammer
  • Publication number: 20130261344
    Abstract: The extraction process for removing metal salts from an organic hydroformylation reaction fluid (“HRF”) prior to returning the HRF to a reaction zone of a hydroformylation process, the extraction process comprising the step of contacting the HRF with an aqueous buffer solution, is improved by contacting the HRF with water in addition to that present in the aqueous buffer solution, i.e., with added water.
    Type: Application
    Filed: November 3, 2011
    Publication date: October 3, 2013
    Inventors: Glenn A. Miller, Michael A. Brammer, Donald L. Campbell, JR., Thomas C. Eisenschmid, Adrian Lord, Jens Rudolph, Hans-Rüdiger Reech, Hans-Günter Thelen, Maximilian Walter
  • Patent number: 8404903
    Abstract: A process of controlling heavies in a recycle catalyst stream, particularly, for use in a continuous hydroformylation process of converting an olefin with synthesis gas in the presence of a hydroformylation catalyst to form an aldehyde product stream with subsequent separation of the catalyst for recycle to the hydroformylation step. Heavies are controlled, and preferably reduced, by means of feeding a recycle gas stream, taken as a portion of an over-head stream from a condenser, back to a vaporizer wherein the aldehyde product stream is separated.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: March 26, 2013
    Assignees: Dow Technology Investments, LLC, BASF SE
    Inventors: Irvin B. Cox, Thomas C. Eisenschmid, Ronald R. Peterson, Rainer Papp, Ludwig Herk, Anthony G. Abatjoglou
  • Publication number: 20120259142
    Abstract: A method of controlling an in-series, multiple, e.g., two, reaction zone, hydroformylation process for producing normal (N) and iso (I) aldehydes at a N:I ratio, the process comprising contacting an olefinically unsaturated compound with synthesis gas and a catalyst comprising (A) a transition metal, e.g., rhodium, (B) an organobisphosphite ligand, and (C) an organomonophosphite ligand, the contacting conducted in first and subsequent reaction zone(s) and at hydroformylation conditions comprising a transition metal concentration in each zone, the method comprising decreasing the transition metal concentration in the first reaction zone to decrease the N:I ratio or increasing the transition metal concentration in the first reaction zone to increase the N:I ratio.
    Type: Application
    Filed: December 15, 2010
    Publication date: October 11, 2012
    Inventors: Thomas C. Eisenschmid, Glenn A. Miller, Jeffrey S. Sawrey, Michael A. Brammer
  • Publication number: 20120253080
    Abstract: Control of an in-series, multiple, e.g., two, reaction zone, hydroformylation process for producing normal (N) and iso (I) aldehydes at a N:I ratio, the process comprising contacting an olefinically unsaturated compound, e.g., propylene, with carbon monoxide, hydrogen and a catalyst comprising (A) a transition metal, e.g., rhodium, (B) an organobisphosphite, and (C) an organomonophosphite ligand, the contacting conducted in first and subsequent reaction zones and at hydroformylation conditions comprising an olefinically unsaturated compound partial pressure in each zone, the control exercised by decreasing the olefinically unsaturated compound partial pressure in the first reaction zone to decrease the N:I ratio or increasing the olefinically unsaturated compound partial pressure in the first reaction zone to increase the N:I ratio.
    Type: Application
    Filed: December 15, 2010
    Publication date: October 4, 2012
    Inventors: Thomas C. Eisenschmid, Glenn A. Miller, Jeffrey S. Sawrey, Michael A. Brammer
  • Publication number: 20120253081
    Abstract: A method of controlling a hydroformylation process for producing normal (N) and iso (I) aldehydes at a N:I ratio, the process comprising contacting an olefinically unsaturated compound, e.g., propylene, with synthesis gas and a catalyst comprising a transition metal, e.g., rhodium, and an organopolyphosphite and an organomonophosphite ligand, the contacting conducted at hydroformylation conditions comprising a synthesis gas partial pressure, the method comprising increasing the synthesis gas partial pressure in the first reaction zone to decrease the N:I ratio or decreasing the synthesis gas partial pressure in the first reaction zone to increase the N:I ratio.
    Type: Application
    Filed: December 15, 2010
    Publication date: October 4, 2012
    Inventors: Thomas C. Eisenschmid, Jeffrey S. Sawrey, Glenn A. Miller, Michael A. Btammer
  • Patent number: 8211949
    Abstract: Novel mixtures of long-chain (C10-C20) olefins are functionalized by conversion to aldehydes using an OXO process, or to sulfates, sulfonates, sulfones, sulfides, or sulfoxides by direct sulfonation. The aldehydes may then be hydrogenated to form alcohols, or aminated to form amines or amides. The olefins starting mixture may be acquired as a byproduct of the tetramerization of ethylene in the presence of certain chromium-containing tetramerization catalysts. The functionalized mixtures, and derivatives prepared therefrom such as alkoxylates prepared from the alcohols, may be useful as surfactants that may offer improved performance in many applications, while their preparation based on a byproduct mixture reduces their cost and also reduces waste-handling issues for this non-targeted stream.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: July 3, 2012
    Assignee: Dow Global Technologies LLC
    Inventors: Pierre T. Varineau, Brian W. Kolthammer, Aaron W. Sanders, David A. Wilson, Kara S. Weber, Robert Kirk Thompson, Cynthia L. Rand, Thomas C. Eisenschmid
  • Publication number: 20110269997
    Abstract: A process of controlling heavies in a recycle catalyst stream, particularly, for use in a continuous hydroformylation process of converting an olefin with synthesis gas in the presence of a hydroformylation catalyst to form an aldehyde product stream with subsequent separation of the catalyst for recycle to the hydroformylation step. Heavies are controlled, and preferably reduced, by means of feeding a recycle gas stream, taken as a portion of an over-head stream from a condenser, back to a vaporizer wherein the aldehyde product stream is separated.
    Type: Application
    Filed: July 2, 2009
    Publication date: November 3, 2011
    Inventors: Irvin B. Cox, Thomas C. Eisenschmid, Ronald R. Peterson, Rainer Papp, Ludwig Herk, Anthony G. Abatjoglou
  • Publication number: 20110098492
    Abstract: Cleaning compositions are described comprising mid-range alkoxylate surfactants or blends of alkoxylate surfactants, and their use as cleaners for triglycerides and cross-linked triglycerides, formula stabilization agents, agents for ultra-concentrated cleaning formulations, pre-wash spotters, detergents, agricultural adjuvants, hard surface cleaning, and emulsifiers.
    Type: Application
    Filed: December 23, 2009
    Publication date: April 28, 2011
    Inventors: Pierre T. Varineau, Molly I-chin Busby, Robert Kirk Thompson, Thomas C. Eisenschmid
  • Patent number: 7863487
    Abstract: A continuous hydroformylation process for producing a mixture of aldehydes with improved flexibility and stability of a normal/branched (N/I) isomer ratio of the product aldehydes. The process involves reacting one or more olefinically-unsaturated compounds with carbon monoxide and hydrogen in the presence of an organopolyphosphite ligand and an organomonophosphite ligand, at least one of such ligands being bonded to a transition metal to form a transition metal-ligand complex hydroformylation catalyst; the process being conducted at a sub-stoichiometric molar ratio of organopolyphosphite ligand to transition metal, at a super-stoichiometric (>2/1) molar ratio of organomonophosphite ligand to transition metal, and at a carbon monoxide partial pressure in the inverse order region of the hydroformylation rate curve; and controlling and varying the isomer ratio by varying the concentration of organopolyphosphite ligand relative to transition metal.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: January 4, 2011
    Inventors: Thomas C. Eisenschmid, Glenn A. Miller, Ronald R. Peterson, Anthony G. Abatjoglon
  • Publication number: 20100069680
    Abstract: A continuous hydroformylation process for producing a mixture of aldehydes with improved flexibility and stability of a normal/branched (N/I) isomer ratio of the product aldehydes. The process involves reacting one or more olefinically-unsaturated compounds with carbon monoxide and hydrogen in the presence of an organopolyphosphite ligand and an organomonophosphite ligand, at least one of such ligands being bonded to a transition metal to form a transition metal-ligand complex hydroformylation catalyst; the process being conducted at a sub-stoichiometric molar ratio of organopolyphosphite ligand to transition metal, at a super-stoichiometric (>2/1) molar ratio of organomonophosphite ligand to transition metal, and at a carbon monoxide partial pressure in the inverse order region of the hydroformylation rate curve; and controlling and varying the isomer ratio by varying the concentration of organopolyphosphite ligand relative to transition metal.
    Type: Application
    Filed: March 12, 2008
    Publication date: March 18, 2010
    Inventors: Thomas C. Eisenschmid, Glenn A. Miller, Ronald R. Peterson, Anthony G. Abatjoglou
  • Publication number: 20090078910
    Abstract: Novel mixtures of long-chain (C10-C20) olefins are functionalized by conversion to aldehydes using an OXO process, or to sulfates, sulfonates, sulfones, sulfides, or sulfoxides by direct sulfonation. The aldehydes may then be hydrogenated to form alcohols, or aminated to form amines or amides. The olefins starting mixture may be acquired as a byproduct of the tetramerization of ethylene in the presence of certain chromium-containing tetramerization catalysts. The functionalized mixtures, and derivatives prepared therefrom such as alkoxylates prepared from the alcohols, may be useful as surfactants that may offer improved performance in many applications, while their preparation based on a byproduct mixture reduces their cost and also reduces waste-handling issues for this non-targeted stream.
    Type: Application
    Filed: September 16, 2008
    Publication date: March 26, 2009
    Inventors: Pierre T. Varineau, Brian W. Kolthammer, Aaron W. Sanders, David A. Wilson, Kara S. Weber, Robert Kirk Thompson, Cynthia L. Rand, Thomas C. Eisenschmid
  • Patent number: 7446231
    Abstract: An improved hydroformylation process involving reacting one or more reactants, such as an olefin, with carbon monoxide and hydrogen in the presence of a hydroformylation catalyst, to produce a reaction product fluid comprising one or more products, preferably aldehydes; wherein said process is conducted in a region of the hydroformylation rate curve that is negative or inverse order in carbon monoxide, which is sufficient to prevent and/or lessen deactivation of the hydroformylation catalyst; and wherein total pressure is controlled at a predetermined target value and/or vent flow rate is controlled at a predetermined target value, by adjusting a flow of a carbon-monoxide containing inlet gas, so as to prevent and/or lessen cycling of process parameters, e.g., reaction rate, total pressure, vent flow rate, and/or temperature.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: November 4, 2008
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Ronald R Peterson, Thomas C. Eisenschmid, David R. Bryant, Morteza Mokhtarzadeh