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:
May. 03, 2011
Filed:
Dec. 21, 2004
Michael Paul Ekart, Kingsport, TN (US);
Frederick Leslie Colhoun, Kingsport, TN (US);
Mary Therese Jernigan, Kingsport, TN (US);
Stephen Weinhold, Kingsport, TN (US);
Rodney Scott Armentrout, Kingsport, TN (US);
Michael Paul Ekart, Kingsport, TN (US);
Frederick Leslie Colhoun, Kingsport, TN (US);
Mary Therese Jernigan, Kingsport, TN (US);
Stephen Weinhold, Kingsport, TN (US);
Rodney Scott Armentrout, Kingsport, TN (US);
Grupo Petrotemex, S.A. de C.V., Nuevo Leon, MX;
Abstract
A bulk of polyester polymer particles comprising polyester polymer comprising greater than 75% virgin polyester polymer, the particles having: The particles may also have a degree of crystallinity within a range of 20% and a maximum degree of crystallinity Tdefined by the equation:=50%−where CA is the total mole % of all carboxylic acid residues other than terephthalic acid residues, based on 100 mole % of carboxylic acid residues, and OH is the total mole % of all hydroxyl functional compound residues other than ethylene glycol residues, based on 100 mole % of hydroxyl functional compounds residues. The preforms and bottles made from these particles can be obtained by melt processing these particles at either lower overall power, faster screw speeds, lower residence time, or lower overall cycle time to thereby reduce the level of residual acetaldehyde generated in the melt.