Modified ethylene-vinyl alcohol copolymer, gas barrier material, film or sheet, multilayer structure, packaging container, and method for producing modified ethylene-vinyl alcohol copolymer

Abstract

To provide as a modified ethylene-vinyl alcohol copolymer achieving both forming processability and gas barrier properties under high humidity, the modified ethylene-vinyl alcohol copolymer having a content of an ethylene structural unit of from 20 to 60 mol %, and having a structural unit (1) described below: wherein in the structural unit (1), R1 is an alkyl group having from one to three carbons; and X is an alkylene group having from one to five carbons.

Dependencies are inferred from the claim text.