Patents by Inventor Walter Partenheimer

Walter Partenheimer 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).

  • Processes for preparing diacids, dialdehydes and polymers
    Patent number: 8785667
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: July 22, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Vladimir Grushin, Leo Ernest Manzer, Walter Partenheimer
  • Processes for preparing diacids, dialdehydes and polymers
    Patent number: 8748638
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: June 10, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Vladimir Grushin, Leo Ernest Manzer, Walter Partenheimer
  • Processes for preparing diacids, dialdehydes and polymers
    Patent number: 8748637
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: June 10, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Vladimir Grushin, Leo Ernest Manzer, Walter Partenheimer
  • PROCESSES FOR PREPARING DIACIDS, DIALDEHYDES AND POLYMERS
    Publication number: 20130317192
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Application
    Filed: July 25, 2013
    Publication date: November 28, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Vladimir Grushin, Leo Ernest Manzer, Walter Partenheimer
  • PROCESSES FOR PREPARING DIACIDS, DIALDEHYDES AND POLYMERS
    Publication number: 20130317191
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Application
    Filed: July 25, 2013
    Publication date: November 28, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Vladimir Grushin, Leo Ernest Manzer, Walter Partenheimer
  • PROCESSES FOR PREPARING DIACIDS, DIALDEHYDES AND POLYMERS
    Publication number: 20130310579
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Application
    Filed: July 25, 2013
    Publication date: November 21, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: VLADIMIR GRUSHIN, Leo Ernest Manzer, Walter Partenheimer
  • PROCESSES FOR PREPARING DIACIDS, DIALDEHYDES AND POLYMERS
    Publication number: 20130310578
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Application
    Filed: July 25, 2013
    Publication date: November 21, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: VLADIMIR GRUSHIN, Leo Ernest Manzer, Walter Partenheimer
  • Processes for preparing diacids, dialdehydes and polymers
    Patent number: 8575299
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: November 5, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Vladimir Grushin, Leo Ernest Manzer, Walter Partenheimer
  • Processes for preparing diacids, dialdehydes and polymers
    Patent number: 8524923
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: September 3, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Vladimir Grushin, Leo Ernest Manzer, Walter Partenheimer
  • PROCESSES FOR PREPARING DIACIDS, DIALDEHYDES AND POLYMERS
    Publication number: 20120123085
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Application
    Filed: January 25, 2012
    Publication date: May 17, 2012
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Vladimir Grushin, Walter Partenheimer, Leo E. Manzer
  • Oxidation of 5-(hydroxymethyl) furfural to 2,5 diformylfuran and subsequent decarbonylation to unsubstituted furan
    Patent number: 8129550
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: March 6, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Vladimir Grushin, Walter Partenheimer, Leo Ernest Manzer
  • OXIDATION OF 5-(HYDROXYMETHYL) FURFURAL TO 2,5 DIFORMYLFURAN AND SUBSEQUENT DECARBONYLATION TO UNSUBSTITUTED FURAN
    Publication number: 20110213112
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Application
    Filed: May 6, 2011
    Publication date: September 1, 2011
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Vladimir Grushin, WALTER PARTENHEIMER, LEO E. MANZER
  • CATALYTIC OXIDATION REACTIONS IN SUPERCRITICAL OR NEAR-SUPERCRITICAL WATER FOR THE PRODUCTION OF AN AROMATIC CARBOXYLIC ACID
    Publication number: 20110184208
    Abstract: An oxidation process for the production of an aromatic carboxylic acid, said process comprising contacting in the presence of a catalyst, within a continuous flow reactor, one or more precursor(s) of the aromatic carboxylic acid with an oxidant, such contact being effected with said precursor(s) and the oxidant in an aqueous solvent comprising water under supercritical conditions or near supercritical conditions, wherein said catalyst comprises copper.
    Type: Application
    Filed: April 29, 2009
    Publication date: July 28, 2011
    Inventors: Joan Fraga-Dubreuil, Samuel Duncan Housley, Walter Partenheimer
  • Oxidation of 5-(hydroxymethyl) furfural to 2,5-diformylfuran and subsequent decarbonylation to unsubstituted furan
    Patent number: 7956203
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Grant
    Filed: March 27, 2001
    Date of Patent: June 7, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Vladimir Grushin, Walter Partenheimer, Leo E. Manzer
  • Transformation of polymers to useful chemicals oxidation
    Patent number: 6958373
    Abstract: Polymeric materials are recycled by transformation to useful chemicals by oxidization in the liquid phase using acetic acid as a solvent and a metal bromide catalyst.
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: October 25, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Walter Partenheimer
  • Transformation of polymers to useful chemicals oxidation
    Publication number: 20040019156
    Abstract: Polymeric materials are recycled by transformation to useful chemicals by oxidization in the liquid phase using acetic acid as a solvent and a metal bromide catalyst.
    Type: Application
    Filed: June 20, 2003
    Publication date: January 29, 2004
    Inventor: Walter Partenheimer
  • Oxidation of 5-(hydroxymethyl) furfural to 2,5-diformylfuran and subsequent decarbonylation to unsubstituted furan
    Publication number: 20030055271
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Application
    Filed: August 14, 2002
    Publication date: March 20, 2003
    Inventors: Vladimir Grushin, Walter Partenheimer, Leo E. Manzer
  • Process for the manufacture of aromatic dicarboxylic acids utilizing cerium to facilitate a low bromine to metals catalyst ratio
    Patent number: 5453538
    Abstract: A process for the manufacture of aromatic dicarboxylic acids is disclosed using a low bromine to metals ratio facilitated by the use of cerium along with the cobalt and manganese catalyst. Aromatic dicarboxylic acids such as terephthalic acid are useful in the manufacture of fiber, films, bottles and molded products.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: September 26, 1995
    Assignee: Amoco Corporation
    Inventors: Jeffrey L. Broeker, Walter Partenheimer, Bruce I. Rosen
  • Preparation of 1,1,1,3,3,3-hexafluoro-2,2-Di(3,4-dicarboxyphenyl)propane anhydride
    Patent number: 5194633
    Abstract: A process for preparing 1,1,1,3,3,3-hexafluoro-2,2-di(3,4-dicarboxyphenyl) propane anhydride is disclosed. 1,1,1,3,3,3-hexafluoro-2,2-di(3,4 -dimethylphenyl) propane is oxidized under liquid phase conditions in the presence of an oxygen-containing gas, bromine and heavy metal catalyst components to 1,1,1,3,3,3-hexafluoro-2,2-di(3,4-dicarboxyphenyl) propane in high yield. Addition of an anhydride of a low molecular weight carboxylic acid to the oxidation reaction mixture converts the 1,1,1-hexafluoro-2,2-di(3,4-dicarboxyphenyl)propane to 1,1,1,3,3,3-hexafluoro-2,2-di(3,4-dicarboxyphenyl) propane anhydride.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: March 16, 1993
    Assignee: Amoco Corporation
    Inventors: Walter Partenheimer, Douglas E. Fjare, Gayle G. Chany
  • Production of polycarboxylic acids with hafnium-activated cobalt catalyst
    Patent number: 5112992
    Abstract: The addition of hafnium to oxidation catalysts provided by a heavy transition metal-bromine ion catalyst combination containing cobalt-manganese-bromine or manganese-bromine or cobalt-bromine and a soluble source of hafnium uniquely increases catalytic activity of the said catalyst combination for converting methyl groups on the benzene nucleus. The presence of hafnium in the total reactor contents is equal to or less than 250 parts per million by weight of the total reactor mother liquor. The solubility of the hafnium in the reactor solvent is such that reactor product cake contains less than 0.3 ppm by weight. Bromine emissions can be reduced.
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: May 12, 1992
    Assignee: Amoco Corporation
    Inventors: Frank G. Belmonte, Kristi A. Fjare, Walter Partenheimer