Patents by Inventor James R. Machac

James R. Machac 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).

  • Patent number: 6262297
    Abstract: A method of preparing hydroxyalkylcarbamates from six-membered cyclic carbonates. The method involves reacting a six-membered cyclic carbonate with anhydrous ammonia or aqueous ammonium hydroxide. The present invention also provides for hydroxyalkylcarbamates prepared from six-membered cyclic carbonates, and for coating compositions comprising hydroxyalkylcarbamates prepared according to the present invention.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: July 17, 2001
    Assignee: Huntsman Petrochemical Corporation
    Inventors: John H. Clements, Howard P. Klein, Edward T. Marquis, James R. Machac, Jr.
  • Patent number: 6239090
    Abstract: A thickened composition and process useful for removing paint, comprising: a carbonate such as propylene carbonate or ethylene carbonate, a thickener such as polyvinyl pyrrolidone (PVP), hydrogen peroxide and water. The composition may include additional cosolvents such as glycol ethers and alcohols such as benzyl alcohol, and/or dibasic ester (DBE).
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: May 29, 2001
    Assignee: Huntsman Petrochemical Corporation
    Inventors: Edward T. Marquis, Robert E. Baldwin, James R. Machac, Jr., Katty Darragas, Susan Aileen Woodrum
  • Patent number: 6187108
    Abstract: Process useful to clean and remove uncured resins. The resins to be treaded include epoxy, polyester (fiberglass) and polyurethane foam. The compositions include alkylene carbonate, including propylene and ethylene carbonate.
    Type: Grant
    Filed: November 4, 1999
    Date of Patent: February 13, 2001
    Assignee: Huntsman Petrochemical Corporation
    Inventors: James R. Machac, Jr., Edward T. Marquis
  • Patent number: 6169061
    Abstract: This invention concerns a composition useful as a paint remover, comprising: alkylene carbonate such as propylene carbonate or ethylene carbonate, hydrogen peroxide, and water, and optionally an alcohol such as benzyl alcohol. In another broad respect, his invention concerns a process for removing paint, comprising: applying a composition containing alkylene carbonate, hydrogen peroxide, and water to a painted surface for a time and under conditions effective to cause blistering or bubbling of the paint. In another broad respect, this invention is a composition useful as a paint remover, comprising: dialkyl carbonate, hydrogen peroxide, and water, optionally containing an alcohol, optionally containing a glycol ether. In another broad respect, this invention is a process for removing paint, comprising: applying a composition containing dialkyl carbonate, hydrogen peroxide, and water to a painted surface for a time and under conditions effective to cause blistering or bubbling of the paint.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: January 2, 2001
    Assignee: Huntsman Petrochemical Corporation
    Inventors: James R. Machac, Jr., Edward T. Marquis, Susan A. Woodrum
  • Patent number: 6159915
    Abstract: A composition useful as a paint remover. The composition may include a carbonate, a dibasic ester and a mono-ester. The composition may also contain an organic sulfur-containing compound such as dimethyl sulfoxide (DMSO), a glycol ether, a ketone, or combination thereof. The composition may be used in a process for removing paint by applying it to a painted surface. The compositions have several important attributes, including low toxicity and high efficacy in removing paint and coatings.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: December 12, 2000
    Assignee: Huntsman Petrochemical Corporation
    Inventors: James R. Machac, Jr., Edward T. Marquis, Susan A. Woodrum, Katty Darragas