Patents by Inventor Lisa Rachwal

Lisa Rachwal 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).

  • Reduced melt viscosity rigid polyvinylchloride (PVC) composition
    Patent number: 7572862
    Abstract: The invention relates to a process aid for use in rigid thermoplastic compositions, and especially in rigid polyvinylchloride (PVC) compositions. The process aid is an acrylic terpolymer of methylmethacrylate, butyl acrylate and styrene at an optimal ratio to produce a significant reduction in melt process viscosity. The resulting reduction in extrusion melt torques enables manufacturers of rigid PVC products to have higher throughput production rates.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: August 11, 2009
    Assignee: Arkema Inc.
    Inventors: Mark Lavach, Paul Lavallee, Jason Pomante, Wayne Ranbom, Lisa Rachwal, Stephane Girois
  • Reduced melt viscosity rigid polyvinylchloride (PVC) composition
    Publication number: 20060175728
    Abstract: The invention relates to a process aid for use in rigid thermoplastic compositions, and especially in rigid polyvinylchloride (PVC) compositions. The process aid is an acrylic terpolymer of methylmethacrylate, butyl acrylate and styrene at an optimal ratio to produce a significant reduction in melt process viscosity. The resulting reduction in extrusion melt torques enables manufacturers of rigid PVC products to have higher throughput production rates.
    Type: Application
    Filed: February 8, 2005
    Publication date: August 10, 2006
    Inventors: Mark Lavach, Paul Lavallee, Jason Pomante, Wayne Ranbom, Lisa Rachwal, Stephane Girois