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. 06, 2009
Filed:
Dec. 14, 2004
Uwe Bayer, Gessertshausen, DE;
Thomas Wehrmeister, Rüsselsheim, DE;
Cor Jansen, Rijen, NL;
Hilde Krikor, Deurne, BE;
Steve Windelinckx, Zoersel, BE;
Uwe Bayer, Gessertshausen, DE;
Thomas Wehrmeister, Rüsselsheim, DE;
Cor Jansen, Rijen, NL;
Hilde Krikor, Deurne, BE;
Steve Windelinckx, Zoersel, BE;
Invista North America S.ar.l., Wilmington, DE (US);
Abstract
The present invention relates to an aromatic polyester composition for making stretch blow molded containers with improved strain hardening. The polyester composition according to the invention exhibits a low DEG content, a natural stretch ratio of <10, a half time of crystallization of >150 sec at 200° C. and comprises a sulfo-modified copolymer. Compared to polyesters of the prior art, the polyester of the present invention exhibits superior stretching characteristics, such as a lower natural stretch ratio (NSR), which allows for production of small PET bottles via thinner and longer parisons. Such thinner and longer parisons improve the production of small containers due to shorter cooling cycles.