公开(公告)号：US11518902B2

公开(公告)日：2022-12-06

申请号：US16756243

申请日：2018-10-16

Applicant: KURARAY CO., LTD.

Inventor： Tatsuya Tanida ,  Keisuke Morikawa ,  Masato Nakamae ,  Seisuke Inada

IPC: C09D129/04 ,  C08F216/06 ,  C08J7/043 ,  C08J7/048

Abstract: The present invention relates to ethylene-vinyl alcohol copolymer particles, comprising an ethylene-vinyl alcohol copolymer having an ethylene unit content of 1 mol % or more and less than 20 mol %, a viscosity-average polymerization degree of 200 to 5000, and a saponification degree of 80 to 99.99 mol %, wherein a crystallinity in water Cw (30° C.) at 30° C. and a crystallinity in water Cw (70° C.) at 70° C. as determined by pulse NMR satisfy formula (I). There is thus provided ethylene-vinyl alcohol copolymer particles having excellent solubility in water and excellent gas barrier performance.