Patents by Inventor Carl M. Lentz

Carl M. Lentz 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).

  • Electrolytic method of simultaneously preparing diaryliodonium salt and alkoxide salt and method of preparing ester of an aromatic acid
    Patent number: 4759833
    Abstract: An electrolytic method for the simultaneous preparation of a diaryliodonium salt and an alkoxide salt comprises adding to the anode compartment of an electrolytic cell, comprised of an anode, a first electrolytic solution comprising an aromatic compound, an iodoaromatic compound, a solvent and a first organic salt; adding to the cathode compartment of the cell, comprised of a cathode, a second electrolytic solution comprising a hydroxyalkyl compound and a second organic salt; and applying to the anode and the cathode an electric potential, to form diaryliodonium salt in the anode compartment and an alkoxide salt in the cathode compartment.Esters of an aromatic acid are prepared by carbonylating an admixture of the diaryliodonium salt and the alkoxide salt by the addition of carbon monoxide thereto.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: July 26, 1988
    Assignee: Eastman Kodak Company
    Inventors: Carl M. Lentz, Michael R. Cushman, James R. Overton, David D. Cornell
  • Carbonylation process for the production of aromatic dicarboxylic acids
    Patent number: 4691050
    Abstract: The present invention provides a process for the preparation of aromatic dicarboxylic acids by the carbonylation of aromatic diiodides. The aromatic diiodides are reacted with carbon monoxide in the presence of a soluble rhodium catalyst in a hydrocarbon acid reaction medium to prepare the aromatic dicarboxylic acids.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: September 1, 1987
    Assignee: Eastman Kodak Company
    Inventors: Carl M. Lentz, James R. Overton, David D. Cornell
  • Preparation of styrene and stilbene compounds
    Patent number: 4620055
    Abstract: The present invention provides a novel process for the preparation of styrene, stilbene, and/or substituted derivatives thereof. The process involves the reaction of an aryl sulfonyl chloride with an olefinic compound in the presence of a catalytic amount of a metal catalyst consisting essentially of palladium.
    Type: Grant
    Filed: October 7, 1985
    Date of Patent: October 28, 1986
    Assignee: Eastman Kodak Company
    Inventors: Carl M. Lentz, James R. Overton, David D. Cornell
  • Carbonylation process for the production of aromatic acids and derivatives thereof
    Patent number: 4594445
    Abstract: The present invention provides a process for the preparation of aryl carboxylic acids and derivatives thereof by the carbonylation of diaryliodonium salts. The diaryliodonium salts are reacted with carbon monoxide and water or an alcohol or amine in a base reaction medium having a pK.sub.b greater than about 8.
    Type: Grant
    Filed: January 7, 1985
    Date of Patent: June 10, 1986
    Assignee: Eastman Kodak Company
    Inventors: Carl M. Lentz, James R. Overton, David D. Cornell
  • Carbonylation process for the production of monoesters aromatic dicarboxylic acids from phosphonium salts
    Patent number: 4585889
    Abstract: The present invention provides a process for the preparation of monoesters of dicarboxylic acids by the carbonylation of carboxyphenyl-triarylphosphonium salts. The carboxyphenyl-triarylphosphonium salts are reacted with carbon monoxide and an alcohol in a base reaction medium having a pK.sub.b greater than about 8.
    Type: Grant
    Filed: January 28, 1985
    Date of Patent: April 29, 1986
    Assignee: Eastman Kodak Company
    Inventors: Carl M. Lentz, James R. Overton, David D. Cornell
  • Carbonylation process for the production of aromatic acids
    Patent number: 4564701
    Abstract: The present invention provides a process for the preparation of aryl carboxylic acids by the carbonylation of diaryliodonium salts. The diaryliodonium salts are reacted with carbon monoxide in the presence of a zero-valent palladium in a hydrocarbon acid reaction medium to prepare the aromatic carboxylic acids.
    Type: Grant
    Filed: January 22, 1985
    Date of Patent: January 14, 1986
    Assignee: Eastman Kodak Company
    Inventors: Carl M. Lentz, James R. Overton, David D. Cornell
  • Carbonylation process for the production of aromatic acids and derivatives thereof
    Patent number: 4507493
    Abstract: The present invention provides a process for the preparation of aryl carboxylic acids and derivatives thereof by the carbonylation of aryl sulfonyl chlorides. The aryl sulfonyl chlorides are reacted with carbon monoxide and water or an alcohol or amine in the presence of a zero-valent metal catalyst consisting essentially of palladium.
    Type: Grant
    Filed: July 6, 1984
    Date of Patent: March 26, 1985
    Assignee: Eastman Kodak Company
    Inventors: Carl M. Lentz, James R. Overton, David D. Cornell
  • Carbonylation process for the production of aromatic acids and derivatives thereof
    Patent number: 4506092
    Abstract: The present invention provides a process for the preparation of aryl carboxylic acids and derivatives thereof by the carbonylation of triaryl sulfonium salts. The triaryl sulfonium salts are reacted with carbon monoxide and water or an alcohol or amine in the presence of a triaryl phosphine and a zero-valent metal catalyst selected from palladium or rhodium.
    Type: Grant
    Filed: July 6, 1984
    Date of Patent: March 19, 1985
    Assignee: Eastman Kodak Company
    Inventors: Carl M. Lentz, James R. Overton, David D. Cornell