The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2009
Filed:
Feb. 08, 2005
Mark Lavach, Allentown, PA (US);
Paul Lavallee, Berwyn, PA (US);
Jason Pomante, West Chester, PA (US);
Wayne Ranbom, Hopewell, NJ (US);
Lisa Rachwal, Harleysville, PA (US);
Stephane Girois, Brignais, FR;
Mark Lavach, Allentown, PA (US);
Paul Lavallee, Berwyn, PA (US);
Jason Pomante, West Chester, PA (US);
Wayne Ranbom, Hopewell, NJ (US);
Lisa Rachwal, Harleysville, PA (US);
Stephane Girois, Brignais, FR;
Arkema Inc., Philadelphia, PA (US);
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.