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:
Apr. 14, 2026
Filed:
Jun. 18, 2020
Kuraray Co., Ltd., Okayama, JP;
Mizuko Oshita, Kurashiki, JP;
Yasuhiro Nonaka, Kurashiki, JP;
KURARAY CO., LTD., Okayama, JP;
Abstract
Provided are: a resin composition which inhibits the generation of aggregates at the time of melt molding and enables obtaining a molded product which has sufficient heat/light resistance and is unlikely to break down into microplastics after being discarded, the above-mentioned characteristics being sufficiently improved compared to a resin composition obtained using the same ethylene-vinyl alcohol copolymer (EVOH), and the like. The resin composition contains: an ethylene-vinyl alcohol copolymer (A); and an aluminum ion (B), wherein at least a part of the ethylene-vinyl alcohol copolymer (A) comprises, at a polymer end, at least one of a carboxylic acid unit (I) and a lactone ring unit (II), a total content (i+ii) of the carboxylic acid unit (I) and the lactone ring unit (II) per gram of the ethylene-vinyl alcohol copolymer (A) is 14 μmol/g or more and 78 μmol/g or less, and a content (b) of the aluminum ion (B) per gram of the ethylene-vinyl alcohol copolymer (A) is 0.002 μmol/g or more and 0.17 μmol/g or less.