Patents by Inventor Ronald A. Andrekanic

Ronald A. Andrekanic 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).

  • Impact copolymers having improved properties
    Publication number: 20080268244
    Abstract: Improvements in the aesthetic appearance and performance properties of heterophasic polymers is obtained through the breaking up and dispersion of large gels. According to the current invention, a novel process is provided for filtration of heterophasic polymers using a fiber metal felt (FMF) media. Molded articles made from impact copolymers prepared according to the present invention have improved appearance and fracture mechanics relative to impact copolymers produced according to prior art methods.
    Type: Application
    Filed: April 30, 2007
    Publication date: October 30, 2008
    Inventors: Antonios K. Doufas, Jeffrey S. Salek, Ronald A. Andrekanic, William C. Thurston, Leon M. Rice
  • Polymerization of alpha-methylstyrene
    Patent number: 6649716
    Abstract: A process for producing polymers of &agr;-methylstyrene uses tin IV chloride as a polymerization initiator. Use of tin IV chloride as an initiator allows polymerization to proceed without purification of the monomer prior to processing. Polymerization can be carried out at ambient temperatures with mild exotherms and good polymer yields. The process uses solvents commonly found in a plant producing &agr;-methylstyrene.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: November 18, 2003
    Assignee: Sunoco, Inc. (R&M)
    Inventors: Ronald A. Andrekanic, Jeffrey S. Salek, Steven E. Mulhall, Yuriy V. Bubnov
  • Polymerization of alpha-methylstyrene
    Publication number: 20030135000
    Abstract: A process for producing polymers of &agr;-methylstyrene uses tin IV chloride as a polymerization initiator. Use of tin IV chloride as an initiator allows polymerization to proceed without purification of the monomer prior to processing. Polymerization can be carried out at ambient temperatures with mild exotherms and good polymer yields. The process uses solvents commonly found in a plant producing &agr;-methylstyrene.
    Type: Application
    Filed: December 18, 2001
    Publication date: July 17, 2003
    Applicant: Aristech Chemical Corporation
    Inventors: Ronald A. Andrekanic, Jeffrey S. Salek, Steven E. Mulhall, Yuriy V. Bubnov
  • Bisphenol-A based polymers having low organic emissions
    Patent number: 5780546
    Abstract: A low organic emission composition comprising a di-alkoxylated bisphenol-A dimaleate urethane dimethacrylate hybrid resin, an alkoxylated bisphenol-A diacrylate or dimethacrylate, ethylene glycol dimethacrylate and other vinyl monomers. The composition is useful in such applications as a substitute for prior art resins, such as polyester/vinyl ester based resins, typically used in fiberglass reinforced plastic applications.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: July 14, 1998
    Assignee: Aristech Chemical Corporation
    Inventors: Joseph Pugach, Thomas W. Smeal, Ronald A. Andrekanic
  • Low organic emission resins
    Patent number: 5741873
    Abstract: The present invention relates to a composition comprising at least one alkoxylated bisphenol-A diacrylate or dimethacrylate, ethylene glycol dimethacrylate, and at least one vinyl monomer. The composition is suitable for use in the fiberglass reinforced plastic art. The composition possesses similar or superior physical properties compared to unsaturated polyester based specialty resins, including emitting lower levels of organic volatiles than typical resins used in the art.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: April 21, 1998
    Assignee: Aristech Chemical Corporation
    Inventors: Ronald A. Andrekanic, Joseph Pugach, Thomas W. Smeal