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:
Sep. 14, 2004
Filed:
Dec. 20, 2001
Stephen M Andrews, New Fairfield, CT (US);
Paul A. Odorisio, Leonia, NJ (US);
Dirk Simon, Mutterstadt, DE;
Ciba Speicalty Chemicals Corporation, Tarrytown, NY (US);
Abstract
A mixture of a polyester, such as poly(ethylene terephthalate) PET, and an additive combination, when extrusion compounded exhibits a lower residual acetaldehyde content than does PET alone when similarly treated. The additive combination comprises compounds selected from at least two groups wherein the groups are (i.) poly(vinyl alcohol) or ethylene/vinyl alcohol copolymer, (ii.) polyhydric alcohols and (iii.) polyacrylamide, polymethacrylamide or copolymer of acrylamide or methacrylamide. The invention pertains to any polyester used in the manufacture of bottles or containers which in turn are used to store consumer materials, especially food, beverages and most especially water.