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:
Jan. 18, 2011
Filed:
Feb. 02, 2009
Yunwa Wilson Cheung, Pittsford, NY (US);
David V. Dobreski, Canandaigua, NY (US);
Richard Turner, Canandaigua, NY (US);
Mark Wheeler, Clifton Springs, NY (US);
Y. Paul Handa, Pittsford, NY (US);
Yunwa Wilson Cheung, Pittsford, NY (US);
David V. Dobreski, Canandaigua, NY (US);
Richard Turner, Canandaigua, NY (US);
Mark Wheeler, Clifton Springs, NY (US);
Y. Paul Handa, Pittsford, NY (US);
Pactiv Corporation, Lake Forest, IL (US);
Abstract
The present invention relates to compositions comprising blends of alkenyl aromatic polymers such as styrenic polymers (i.e. PS and HIPS) and bio-based or biodegradable polymers (i.e. PLA, PGA, PHA, PBS, PCL) compatibilized with styrene-based copolymers (i.e. styrene-ethylene-butylene-styrene (SEBS) block copolymers, maleated SEBS, styrene-maleic anhydride (SMA) copolymer, styrene-methyl methacrylate (SMMA) copolymer) or a mixture of two or more styrene-based copolymers such as SEBS and SMA. These novel compositions can be extruded and thermoformed to produce very low density food service and consumer foam articles such as plates, hinged lid containers, trays, bowls, and egg cartons with good mechanical properties.