Patents Assigned to DuPont Performance Elastomers L.L.C.
  • Grafted fluoroelastomers
    Patent number: 7342074
    Abstract: Polyhydroxy curable fluoroelastomers that are substantially free of nucleophilic endgroups are grafted with a monophenol having at least one pendant group. The resulting grafted fluoroelastomers retain most of the properties of the original elastomers including excellent pre-vulcanization characteristics, while incorporating pendant groups which may be used for further modification, crosslinking or for changing the physical properties (e.g. Tg) of the fluoroelastomer.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: March 11, 2008
    Assignee: DuPont Performance Elastomers L.L.C.
    Inventors: Patrick Luigi Paglia, Walter Werner Schmiegel
  • Grafted fluoroelastomers
    Patent number: 7253236
    Abstract: Polyhydroxy curable fluoroelastomers that are substantially free of nucleophilic endgroups are grafted with a monophenol having at least one pendant group. The resulting grafted fluoroelastomers retain most of the properties of the original elastomers including excellent pre-vulcanization characteristics, while incorporating pendant groups which may be used for further modification, crosslinking or for changing the physical properties (e.g. Tg) of the fluoroelastomer.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: August 7, 2007
    Assignee: DuPont Performance Elastomers L.L.C.
    Inventors: Patrick Luigi Paglia, Walter Werner Schmiegel
  • Process aid for metallocene catalyzed linear low density polyethylene polymers
    Patent number: 7238748
    Abstract: Extrusion processability of resin blends of a metallocene catalyzed linear low density polyethylene and a low density polyethylene is improved by introducing a process aid package comprising a fluoroelastomer having a Mooney viscosity (ML(1+10) at 121° C.) between 30 and 60 and an interfacial agent.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: July 3, 2007
    Assignee: DuPont Performance Elastomers L.L.C.
    Inventor: Steven Richard Oriani