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:
Jul. 20, 2010
Filed:
Oct. 08, 2004
Applicants:
Carl S. Nichols, Waxhaw, NC (US);
Tony Clifford Moore, Charlotte, NC (US);
Inventors:
Carl S. Nichols, Waxhaw, NC (US);
Tony Clifford Moore, Charlotte, NC (US);
Assignee:
Wellman, Inc., Bay Saint Louis, MS (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/62 (2006.01); C08G 63/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention is a method for the late introduction of additives into polyethylene terephthalate. The method employs a reactive carrier that functions as a delivery vehicle for one or more additives. The reactive carrier reacts with the polyethylene terephthalate, thereby binding the reactive carrier in the polyethylene terephthalate resin and preventing the emergence of the reactive carrier and additives from the polyethylene terephthalate during subsequent thermal processing.