Patents by Inventor Patrick Michael Burke

Patrick Michael Burke 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).

  • Hydroformylation of olefins using supported bis(phosphorus) ligands
    Patent number: 6369257
    Abstract: Supported bis(phosphorus) ligands are disclosed for use in hydroformylation reactions, including the hydroformylation of olefins. Catalysts are formed when the ligands are complexed with a catalytically active metal (e.g., rhodium or iridium).
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: April 9, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Emilio E. Bunel, Patrick Michael Burke, Joe Douglas Druliner, Leo Ernest Manzer, Kenneth Gene Moloy, Manxue Wang
  • Hydroformylation of olefins using supported bis(phosphorus) ligands
    Patent number: 6229052
    Abstract: Supported bis(phosphorus) ligands are disclosed for use in hydroformylation reactions, including the hydroformylation of olefins. Catalysts are formed when the ligands are complexed with a catalytically active metal (e.g., rhodium or iridium).
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: May 8, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Emilio E. Bunel, Patrick Michael Burke, Joe Douglas Druliner, Leo Ernest Manzer, Kenneth Gene Moloy, Manxue Wang
  • Rhodium catalyzed carbonylation of an allylic butenol or butenyl ester to beta-gamma unsaturated anhydrides
    Patent number: 6087533
    Abstract: A process for the carbonylation of allylic butenol or butenyl ester of a carboxylic acid (e.g., crotyl acetate, 3-acetoxybutene-1 and mixtures thereof) in an anhydrous carboxylic acid solvent and production of beta-gamma unsaturated carboxylic acid anhydride (e.g., 3-pentenoic acid anhydride) utilizing a rhodium-containing catalyst (e.g., dicarbonylacetylacetonate rhodium(I)) promoted with a metal iodide (e.g., dicarbonylacetylacetonate rhodium(I), or the like). The following representative reaction showing a crotyl ester (i.e., a carboxylic acid ester of 2-buten-1-ol) as the reactant producing a corresponding pentenoic acid anhydride is illustrative of the overall carbonylation. ##STR1## Suitable allylic compounds are of the form ##STR2## where one of the groups R.sup.1, R.sup.2, and R.sup.3 is methyl and the other two groups are H and wherein R.sub.4 is selected from the group consisting of H and ##STR3## wherein R.sup.5 is selected from the group consisting of a C.sub.1 to C.sub.10 alkyl.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: July 11, 2000
    Assignees: E I. du Pont de Nemours and Company, DSM Desotech Inc.
    Inventor: Patrick Michael Burke
  • Process for the preparation of 3-pentenoic acid from allylic butenyl alcohols or esters using a nickel catalyst
    Patent number: 6015923
    Abstract: Process for making 3-pentenoic acid acid by reacting an allylic butenyl alcohol or its corresponding ester with carbon monoxide in the presence of nickel, and a source of iodide.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: January 18, 2000
    Assignees: E. I. du Pont de Nemours and Company, DSM N. V.
    Inventor: Patrick Michael Burke
  • Process for the preparation of 3-pentenoic acid from butadiene using a nickel catalyst
    Patent number: 5962732
    Abstract: Process for making 3-pentenoic acid by reacting butadiene with carbon monoxide in the presence of nickel and an iodide source.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: October 5, 1999
    Assignees: E. I. du Pont de Nemours and Company, DSM N.V.
    Inventor: Patrick Michael Burke
  • Hydroformylation process
    Patent number: 5698745
    Abstract: A hydroformylation process for the production of linear aldehydes of an olefin, with hydrogen and carbon monoxide in a solvent containing a catalyst having a platinum component, a bidentate diaryl phosphine component where the bridging group is ferrocenyl, and an acid promoter component.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: December 16, 1997
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Patrick Michael Burke, Onko Jan Gelling, Henk Oevering, Imre Toth
  • Hydroformylation process
    Patent number: 5670700
    Abstract: A hydroformylation process for the production of 5-formylvaleric acid from 2-, or 3-pentenoic acid, or 5-formylvaleric acid ester from 2-, or 3-pentenoic acid ester, or 5-formylvaleronitrile from 2-, or 3-pentenenitrile by reaction with hydrogen and carbon monoxide in a solvent containing a catalyst having a platinum component, a bidentate diaryl phosphine component, an acid promoter component.
    Type: Grant
    Filed: August 25, 1995
    Date of Patent: September 23, 1997
    Assignees: E. I. Du Pont de Nemours and Company, DSM, N.V.
    Inventors: Patrick Michael Burke, Onko Jan Gelling, Henk Oevering, Imre Toth
  • Alkyl and haloalkyl N,N'-dialkyl-N-methylolphosphorodiamidates
    Patent number: 3957923
    Abstract: Alkyl and haloalkyl N,N'-dialkyl-N-methylolphosphorodiamidates, for example, methyl N,N'-dimethyl-N,N'-dimethylolphosphorodiamidate, useful for rendering combustible cellulosic materials flame resistant.
    Type: Grant
    Filed: February 18, 1975
    Date of Patent: May 18, 1976
    Assignee: E. I. Du Pont de Nemours & Company
    Inventor: Patrick Michael Burke