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. 24, 2007
Filed:
Sep. 21, 2000
HU Yang, San Ramon, CA (US);
Ta Yen Ching, Novato, CA (US);
Gangfeng Cai, Danville, CA (US);
Chevron Phillips Chemical Company, LP, The Woodlands, TX (US);
Abstract
Herein is disclosed an oxygen barrier composition comprising an oxygen barrier polymer and an oxygen scavenging polymer. Preferably, the oxygen barrier polymer is selected from polymers or copolymers of vinyl alcohol, polyesters, polymers or copolymers of vinylidene dichloride, polymers or copolymers of epoxies, polysulfones, polymers or copolymers of acrylonitrile, polymers or copolymers of isocyanates, or polyamides other than MXD6; and the oxygen scavenging polymer either comprises an ethylenic backbone and a cyclic olefinic pendant group of structure I, or a polyester group of structure II or structure III: 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; X is null or a linking group; and, when r is hydrogen, at least one of q, q, q, and qis also hydrogen. The oxygen barrier composition can be formed into an oxygen barrier layer of a packaging article. Such layers and articles, and methods for making same, are also disclosed.