Patents by Inventor John C. Wozny

John C. Wozny 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).

  • Coagulation of polymers using sulfurous acid
    Patent number: 5849836
    Abstract: Methods for coagulating a graft polymer latex comprise contacting the latex with sulfurous acid. The methods are particularly suitable for ABS resins and provide products having improved thermal oxidative stability and color stability. When coagulation is effected in the presence of a radical initiator, the residual grafting monomer concentration in the resin product is reduced.
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: December 15, 1998
    Assignee: General Electric Company
    Inventor: John C. Wozny
  • Sulfur dioxide for vapor phase elimination of styrene and acrylonitrile popcorn polymer in bulk san production
    Patent number: 5399644
    Abstract: A bulk or mass polymerization process is provided which involves bulk polymerization of vinyl monomers in a liquid phase in the presence of a nitrogen rich vapor phase containing amounts of sulfur dioxide effective to inhibit formation of popcorn polymer during the reaction. The process may be used as a step in the formation of polymer or may be used as the entire reaction process.
    Type: Grant
    Filed: June 7, 1994
    Date of Patent: March 21, 1995
    Assignee: General Electric Company
    Inventors: John C. Wozny, Chen-Youn Sue, John E. Pace
  • Process and composition for stabilization of ar-brominated styrenic monomer
    Patent number: 4997990
    Abstract: A process for stabilizing vinyl monomers in general, and ar-brominated styrene polymer in particular, against polymerization by mixing a vinyl monomer such as an ar-brominated styrene monomer with a stabilizing amount of iodine composition to produce a stabilized monomer and novel stabilized compositions.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: March 5, 1991
    Assignee: General Electric Company
    Inventors: Stephen M. Campbell, John C. Wozny
  • Process and composition for stabilization of ar-brominated styrenic monmer against premature stabilization
    Patent number: 4885413
    Abstract: A process and composition for stabilizing ar-brominated styrene polymer against polymerization which mixes an ar-brominated styrene monomer with a stabilizing amount of N,N-dialkylhydroxylamine to produce a stabilized monomer and novel stabilized compositions.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: December 5, 1989
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Stephen M. Campbell, John C. Wozny