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. 14, 2012
Filed:
Mar. 29, 2011
Camille Grossetete, Ivry sur Seine, FR;
David W. Knoeppel, League City, TX (US);
Jose M. Sosa, Deer Park, TX (US);
Shane Steagall, Houston, TX (US);
Carlos Corleto, Seabrook, TX (US);
Camille Grossetete, Ivry sur Seine, FR;
David W. Knoeppel, League City, TX (US);
Jose M. Sosa, Deer Park, TX (US);
Shane Steagall, Houston, TX (US);
Carlos Corleto, Seabrook, TX (US);
Fina Technology, Inc., Houston, TX (US);
Abstract
A method of preparing a polystyrene blend that includes combining a first polystyrene composition having a first melt flow index with a second polystyrene composition having a second melt flow index and forming a polystyrene blend, the second melt flow index being at least 2 dg/min higher that the first melt flow index. The polystyrene blend has an observed tensile strength value greater than 3% above the expected tensile strength value. The second polystyrene composition can include a recycled polystyrene material, which can include expanded polystyrene. An alternate method of preparing the polystyrene blend includes combining a polystyrene composition with a styrene monomer to form a reaction mixture, polymerizing the reaction mixture and obtaining a polystyrene blend, where the polystyrene containing composition has a melt flow index at least 2 dg/min higher than the melt flow index of the styrene monomer after it has been polymerized.