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:
Dec. 17, 2013
Filed:
Aug. 09, 2012
Jack M. Frost, Parkersburg, WV (US);
Jason R. Vititoe, Ashland, KY (US);
Nicole B. Loontjens, Coventry, RI (US);
Gary C. Welsh, Cincinnati, OH (US);
Jack M. Frost, Parkersburg, WV (US);
Jason R. Vititoe, Ashland, KY (US);
Nicole B. Loontjens, Coventry, RI (US);
Gary C. Welsh, Cincinnati, OH (US);
Americas Styrenics, LLC, The Woodlands, TX (US);
Abstract
The present disclosure provides a styrenic resin incorporating post-consumer recycle polystyrene (PCR PS), and systems and methods for making the same. For example, a styrenic resin produced in accordance with present embodiments includes at least approximately 20 weight percent PCR PS, has a melt flow rate (MFR) of less than approximately 2.5 g/10 min per ASTM D-1238-10, and an Mz+1 molecular weight of at least 685,000. The styrenic resin is produced by a free-radical polymerization process performed on a feed having PCR PS dissolved in monovinylarene monomer. The feed is produced in such a way so as to remove contaminants commonly associated with PCR PS.