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:
Nov. 15, 2011
Filed:
Jun. 01, 2007
Frederick Leslie Colhoun, Kingsport, TN (US);
Mark Edward Stewart, Kingsport, TN (US);
Stephen Weinhold, Kingsport, TN (US);
Richard Dalton Peters, Kingsport, TN (US);
Roger Lee Martin, Gray, TN (US);
Frederick Leslie Colhoun, Kingsport, TN (US);
Mark Edward Stewart, Kingsport, TN (US);
Stephen Weinhold, Kingsport, TN (US);
Richard Dalton Peters, Kingsport, TN (US);
Roger Lee Martin, Gray, TN (US);
Grupo Petrotemex, S.A. De C.V., San Pedro Garza Garcia, MX;
Abstract
Polymer blends suitable for packaging are disclosed that include one or more impact modifiers; and one or more polyethylene terephthalate homopolymers or copolymers obtained by a melt phase polymerization using a catalyst system comprising aluminum atoms in an amount, for example, from about 3 ppm to about 60 ppm and one or more alkaline earth metal atoms, alkali metal atoms, or alkali compound residues in an amount, for example, from about 1 ppm to about 25 ppm, in each case based on the weight of the one or more polyethylene terephthalate homopolymers or copolymers The polymer blends disclosed exhibit improved low temperature toughness compared with blends made using polymers prepared with conventional catalyst systems.