Patents by Inventor David K. Edge

David K. Edge 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: 6077889
    Abstract: A light stabilizer package is disclosed. The light stabilizer package comprises a monomeric HALS having a pKa of no greater than 7, an ultraviolet light absorber and, optionally, a polymeric HALS having a pKa of less than 7. The light stabilizer package may be blended with a thermoplastic olefin to form a moldable light stable composition. An article comprising the moldable light stable composition may have an exterior surface that is at least partially coated.
    Type: Grant
    Filed: March 24, 1993
    Date of Patent: June 20, 2000
    Assignee: Solvay Engineered Polymers
    Inventors: Edmund Kwok-Leung Lau, David K. Edge
  • Patent number: 6051637
    Abstract: A light stabilizer package is disclosed. The light stabilizer package comprises a monomeric HALS having a pKa of no greater than 7, an ultraviolet light absorber and, optionally, a polymeric HALS having a pKa of less than 7. The light stabilizer package may be blended with a thermoplastic olefin to form a moldable light stable composition. An article comprising the moldable light stable composition may have an exterior surface that is at least partially coated.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: April 18, 2000
    Assignee: Solvay Engineered Polymers
    Inventors: Edmund Kwok-Leung Lau, David K. Edge
  • Patent number: 5998524
    Abstract: Thermoplastic olefinic, polymer blends which have superior physical properties and adherence for coating materials such as paints are disclosed. The blends may be formed from various combinations of thermoplastic components such as a crystalline isotactic propylene polymer, and sequentially polymerized blends of polypropylene and ethylene-propylene copolymers, with elastomeric components such as copolymers of ethylene and butene, and copolymers of ethylene and octene which are produced with metallocene or Kaminsky catalysts. If desired, other components, such as fillers, can be included.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: December 7, 1999
    Assignee: Solvay Engineered Polymers
    Inventors: Satchit Srinivasan, Edward Szczepaniak, Sunit S. Shah, David K. Edge
  • Patent number: 5985971
    Abstract: Thermoplastic olefinic, polymer blends which have superior physical properties and adherence for coating materials such as paints are disclosed. The blends may be formed from various combinations of thermoplastic components such as a crystalline isotactic propylene polymers and sequentially polymerized blends of polypropylene and ethylene-propylene copolymers, with elastomeric components such as copolymers of ethylene and butene, and copolymers of ethylene and octene which are produced with metallocene or Kaminsky catalysts. If desired, other components, such as fillers, can be included. The thermoplastic olefinic, polymer blends are suitable for automotive applications.
    Type: Grant
    Filed: October 29, 1997
    Date of Patent: November 16, 1999
    Assignee: Solvay Engineered Polymers
    Inventors: Satchit Srinivasan, Edward Szczepaniak, Sunit S. Shah, David K. Edge
  • Patent number: 5763534
    Abstract: Thermoplastic olefinic, polymer blends which have superior physical properties and adherence for coating materials such as paints are disclosed. The blends may be formed from various combinations of thermoplastic components such as homopolymers of propylene having an isotactic index which is greater than about 0.93, and/or a crystallinity which is greater than about 56%, and sequentially polymerized blends of polypropylene and ethylene-propylene copolymers, with elastomeric components such as copolymers of ethylene and butene produced with metallocene or Kaminsky catalysts, and copolymers of ethylene and octene produced with metallocene or Kaminsky catalysts. If desired, other components, such as copolymers of ethylene with C.sub.3 -C.sub.15 alpha olefins or fillers, can be included.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: June 9, 1998
    Assignee: Solvay Engineered Polymers
    Inventors: Satchit Srinivasan, Edward Szczepaniak, Sunit S. Shah, David K. Edge
  • Patent number: 5733956
    Abstract: A light stabilizer package is disclosed. The light stabilizer package comprises a monomeric HALS having a pKa of no greater than 7, an ultraviolet light absorber and, optionally, a polymeric HALS having a pKa of less than 7. The light stabilizer package may be blended with a thermoplastic olefin to form a moldable light stable composition. An article comprising the moldable light stable composition may have an exterior surface that is at least partially coated.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: March 31, 1998
    Assignee: Solvay Engineered Polymers
    Inventors: Edmund Kwok-Leung Lau, David K. Edge