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:
Jun. 08, 2021
Filed:
Feb. 24, 2020
Toyobo Film Solutions Limited, Tokyo, JP;
Naoki Iyo, Tokyo, JP;
Shinji Yano, Tokyo, JP;
TOYOBO CO., LTD., Osaka, JP;
Abstract
An oriented polyester film containing antioxidant and modified polyolefin wax in a surface layer on at least one side thereof, wherein the oriented polyester film is such that the modified polyolefin wax contained in said layer is present in an amount that, as measured based on weight of a composition at said layer, is not less than 0.1 wt % but less than 3.0 wt %, and wherein the modified polyolefin wax is such that acid value thereof is not less than 1 mg KOH/g but less than 50 mg KOH/g, 3 wt % weight loss onset temperature thereof is not less than 300° C., weight-average molecular weight thereof is within a range that is 3,500 to 65,000, and the antioxidant is present in an amount that, as measured based on the weight of the composition, is not less than 0.02 wt % but less than 0.35 wt %.