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. 20, 2005
Filed:
Jun. 27, 2003
HU Yang, Manvel, TX (US);
Ta Yen Ching, Houston, TX (US);
Gangfeng Cai, Arlington, TX (US);
Chevron Phillips Chemical Co., LP, The Woodlands, TX (US);
Abstract
Herein is disclosed multilayer packaging articles comprising an oxygen barrier layer comprising ethylene/vinyl alcohol copolymer (EVOH) (an 'EVOH oxygen barrier layer'); an oxygen scavenging layer adjacent thereto, wherein the oxygen scavenging layer comprises a polymer comprising an ethylenic backbone and a cycloalkenyl group having structure I:wherein q, q, q, q, and r are independently selected from hydrogen, methyl, or ethyl; m is —(CH)—, wherein n is an integer from 0 to 4, inclusive, and, when r is hydrogen, at least one of q, q, q, and qis also hydrogen; and a third layer adjacent to the oxygen scavenging layer. In addition to the oxygen scavenging function, the oxygen scavenging layer functions as a tie layer to substantially inhibit delamination of the EVOH oxygen barrier layer from the third layer of the packaging article.