Patents by Inventor John Edward Pace

John Edward Pace 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).

  • Method of making halophthalic acids and halophthalic anhydrides
    Patent number: 7732559
    Abstract: A method of preparing a halophthalic acid is disclosed which comprises the steps of contacting in a liquid phase reaction mixture at least one halogen-substituted ortho-xylene with oxygen and acetic acid at a temperature in a range between about 120° C. and about 220° C. in the presence of a catalyst system yielding a product mixture comprising less than 10 percent halogen-substituted ortho-xylene starting material, a halophthalic acid product, and less than about 10,000 ppm halobenzoic acid and less than about 1000 ppm halophthalide by-products based on a total amount of halophthalic acid present in the product mixture. In addition methods for the preparation of halophthalic anhydride, and recovery of high purity acetic acid from an aqueous acetic acid stream comprising HCl, which is generated during the preparation of the halophthalic acid are also disclosed.
    Type: Grant
    Filed: July 18, 2008
    Date of Patent: June 8, 2010
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Robert Edgar Colborn, David Bruce Hall, Peter Alois Koch, Bernd Volker Demuth, Thomas Wessel, Karl Ernst Mack, Prashant Anil Tatake, Uptal Mahendra Vakil, Shyamal Bhaskar Gondkar, John Edward Pace, Kwang Woong Won
  • Method of making halophthalic acids and halophthalic anhydrides
    Patent number: 7541489
    Abstract: A method of preparing a halophthalic acid is disclosed which comprises the steps of contacting in a liquid phase reaction mixture at least one halogen-substituted ortho-xylene with oxygen and acetic acid at a temperature in a range between about 120° C. and about 220° C. in the presence of a catalyst system yielding a product mixture comprising less than 10 percent halogen-substituted ortho-xylene starting material, a halophthalic acid product, and less than about 10,000 ppm halobenzoic acid and less than about 1000 ppm halophthalide by-products based on a total amount of halophthalic acid present in the product mixture. In addition methods for the preparation of halophthalic anhydride, and recovery of high purity acetic acid from an aqueous acetic acid stream comprising HCl, which is generated during the preparation of the halophthalic acid are also disclosed.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: June 2, 2009
    Assignee: SABIC Innovative Plastics IP B.V.
    Inventors: Robert Edgar Colborn, David Bruce Hall, Peter Alois Koch, Bernd Volker Demuth, Thomas Wessel, KarlErnst Mack, Prashant Anil Tatake, Utpal Mahendra Vakil, Shyamal Bhaskar Gondkar, John Edward Pace, Kwang Woong Won
  • METHOD OF MAKING HALOPHTHALIC ACIDS AND HALOPHTHALIC ANHYDRIDES
    Publication number: 20080275211
    Abstract: A method of preparing a halophthalic acid is disclosed which comprises the steps of contacting in a liquid phase reaction mixture at least one halogen-substituted ortho-xylene with oxygen and acetic acid at a temperature in a range between about 120° C. and about 220° C. in the presence of a catalyst system yielding a product mixture comprising less than 10 percent halogen-substituted ortho-xylene starting material, a halophthalic acid product, and less than about 10,000 ppm halobenzoic acid and less than about 1000 ppm halophthalide by-products based on a total amount of halophthalic acid present in the product mixture. In addition methods for the preparation of halophthalic anhydride, and recovery of high purity acetic acid from an aqueous acetic acid stream comprising HCl, which is generated during the preparation of the halophthalic acid are also disclosed.
    Type: Application
    Filed: July 18, 2008
    Publication date: November 6, 2008
    Inventors: Robert Edgar Colborn, David Bruce Hall, Peter Alois Koch, Bernd Volker Demuth, Thomas Wessel, Karl Ernst Mack, Prashant Anil Tatake, Utpal Mahendra Vakil, Shyamal Bhaskar Gondkar, John Edward Pace, Kwang Woong Won