Patents by Inventor Timothy D. Ligon

Timothy D. Ligon 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).

  • Control of a process for the purification of (meth)acrylic acid using on-line, near IR analysis
    Patent number: 10294185
    Abstract: An improved process for the manufacture of technical grade (meth)acrylic acid, e.g., acrylic acid, the process comprising producing a hydrated reaction product from the gas-phase oxidation of at least one (meth)acrylic acid precursor, e.g., propylene, followed by first dehydrating and then concentrating the reaction product, the improvement comprising controlling at least one of the water, acetic acid and (meth)acrylic acid content of the reaction product during the purification of the reaction product using on-line, near IR spectroscopy.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: May 21, 2019
    Assignee: Arkema Inc.
    Inventors: Timothy D. Ligon, Olan S. Fruchey, Christopher T. Reeves, Fungau Ho, Roger L. Roundy, William G. Etzkorn, Mahmood N. A. Jawaid, Patrick M. Wiegand
  • CONTROL OF A PROCESS FOR THE PURIFICATION OF (METH)ACRYLIC ACID USING ON-LINE, NEAR IR ANALYSIS
    Publication number: 20170320804
    Abstract: An improved process for the manufacture of technical grade (meth)acrylic acid, e.g., acrylic acid, the process comprising producing a hydrated reaction product from the gas-phase oxidation of at least one (meth)acrylic acid precursor, e.g., propylene, followed by first dehydrating and then concentrating the reaction product, the improvement comprising controlling at least one of the water, acetic acid and (meth)acrylic acid content of the reaction product during the purification of the reaction product using on-line, near IR spectroscopy.
    Type: Application
    Filed: July 25, 2017
    Publication date: November 9, 2017
    Inventors: Timothy D. Ligon, Olan S. Fruchey, Christopher T. Reeves, Fungau Ho, Roger L. Roundy, William G. Etzkorn, Mahmood N.A. Jawaid, Patrick M. Wiegand
  • Control of a process for the purification of (meth)acrylic acid using on-line, near IR analysis
    Patent number: 9745244
    Abstract: An improved process for the manufacture of technical grade (meth)acrylic acid, e.g., acrylic acid, the process comprising producing a hydrated reaction product from the gas-phase oxidation of at least one (meth)acrylic acid precursor, e.g., propylene, followed by first dehydrating and then concentrating the reaction product, the improvement comprising controlling at least one of the water, acetic acid and (meth)acrylic acid content of the reaction product during the purification of the reaction product using on-line, near IR spectroscopy.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: August 29, 2017
    Assignee: Arkeme Inc.
    Inventors: Timothy D. Ligon, Olan S. Fruchey, Christopher T. Reeves, Fungau Ho, Roger L. Roundy, William G. Etzkorn, Mahmood N. A. Jawaid, Patrick M. Wiegand
  • CONTROL OF A PROCESS FOR THE PURIFICATION OF (METH)ACRYLIC ACID USING ON-LINE, NEAR IR ANALYSIS
    Publication number: 20110172462
    Abstract: An improved process for the manufacture of technical grade (meth)acrylic acid, e.g., acrylic acid, the process comprising producing a hydrated reaction product from the gas-phase oxidation of at least one (meth)acrylic acid precursor, e.g., propylene, followed by first dehydrating and then concentrating the reaction product, the improvement comprising controlling at least one of the water, acetic acid and (meth)acrylic acid content of the reaction product during the purification of the reaction product using on-line, near IR spectroscopy.
    Type: Application
    Filed: September 18, 2009
    Publication date: July 14, 2011
    Applicant: Arkema Inc.
    Inventors: Timothy D. Ligon, Olan S. Fruchey, Christopher Reeves, Fungau Ho, Roger L. Roundy, William G. Etzkorn, Mahmood N. A. Jawaid, Patrick M. Wiegand
  • Preparation of glutaraldehyde
    Patent number: 7709686
    Abstract: Provided is a process for the preparation of glutaraldehyde. The process comprises reacting an alkoxydihydropyran with water in the presence of an acidic catalyst. The alcohol by-product distilled from the reaction mixture is subjected to a heterogeneous catalyst that is located external to the distillation column used for distilling the alcohol, thereby increasing glutaraldehyde yield and decreasing the level of alkoxydihydropyran contamination in the alcohol.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: May 4, 2010
    Assignee: Dow Global Technologies Inc.
    Inventors: Charles D. Gartner, Timothy D. Ligon
  • PREPARATION OF GLUTARALDEHYDE
    Publication number: 20090318735
    Abstract: Provided is a process for the preparation of glutaraldehyde. The process comprises reacting an alkoxydihydropyran with water in the presence of an acidic catalyst. The alcohol by-product distilled from the reaction mixture is subjected to a heterogeneous catalyst that is located external to the distillation column used for distilling the alcohol, thereby increasing glutaraldehyde yield and decreasing the level of alkoxydihydropyran contamination in the alcohol.
    Type: Application
    Filed: June 9, 2009
    Publication date: December 24, 2009
    Inventors: Charles D. Gartner, Timothy D. Ligon