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:
Mar. 26, 2024
Filed:
Aug. 06, 2020
Toyo Seikan Group Holdings, Ltd., Tokyo, JP;
Toyo Seikan Group Holdings, Ltd., Tokyo, JP;
Abstract
An oxygen-absorbing film having an oxygen-absorbing adhesive agent layer including a cured oxygen-absorbing adhesive agent resin composition, wherein the oxygen-absorbing adhesive agent layer has at least two glass transition temperatures, and wherein the lowest glass transition temperature among the glass transition temperatures is lower than 0° C. The cured oxygen-absorbing adhesive agent resin composition preferably includes: (A) an oxygen-absorbing polyester resin having a glass transition temperature of −20 to 10° C. and (B) a saturated polyester resin having a glass transition temperature of −10° C. or lower. The oxygen-absorbing polyester-based resin (A) is made from a tetrahydrophthalic acid, a derivative thereof, a tetrahydrophthalic anhydride, or a derivative thereof, and the saturated polyester resin (B) containing a structural unit derived from a diol component and a structural unit derived from a dicarboxylic acid component is preferably selected from the group consisting of adipic acid, sebacic acid, isophthalic acid, and combinations thereof.