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:
Feb. 08, 2022
Filed:
May. 12, 2020
Applicant:
Mitsubishi Chemical Corporation, Tokyo, JP;
Inventors:
Shintaro Usui, Tokyo, JP;
Minako Ikeshita, Tokyo, JP;
Assignee:
MITSUBISHI CHEMICAL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 27/30 (2006.01); B32B 1/08 (2006.01); B32B 27/18 (2006.01); C08K 5/101 (2006.01); C08K 5/13 (2006.01); C08K 5/3435 (2006.01); F16L 9/14 (2006.01);
U.S. Cl.
CPC ...
B32B 27/306 (2013.01); B32B 1/08 (2013.01); B32B 27/18 (2013.01); C08K 5/101 (2013.01); C08K 5/13 (2013.01); C08K 5/3435 (2013.01); F16L 9/14 (2013.01); B32B 2597/00 (2013.01);
Abstract
An ethylene-vinyl alcohol copolymer composition contains: (A) an ethylene-vinyl alcohol copolymer; (B) an antioxidant; and (C) a sorbic acid ester; wherein the sorbic acid ester (C) is present in an amount of 0.00001 to 10 ppm based on the weight of the ethylene-vinyl alcohol copolymer composition; wherein the weight ratio (B)/(C) of the antioxidant (B) to the sorbic acid ester (C) is 500 to 1,000,000. The resulting ethylene-vinyl alcohol copolymer composition is less susceptible to coloration.