公开(公告)号：US20230025550A1

公开(公告)日：2023-01-26

申请号：US17786568

申请日：2020-12-07

Applicant: KURARAY CO., LTD.

Inventor： Tomoka SHIROUCHI ,  Kenta TAKEMOTO ,  Takuro NIIMURA ,  Atsuhiro NAKAHARA ,  Yoshiaki ASANUMA

IPC: C08F220/14 ,  B32B17/10 ,  B32B27/08 ,  B32B27/18 ,  B32B27/30

Abstract: The present invention relates to an ionomer resin, comprising: a (meth)acrylic acid unit (A); a neutralized (meth)acrylic acid unit (B); and an ethylene unit (C), wherein the total amount of the unit (A) and the unit (B) is from 6 to 10 mol % based on the entire monomeric units constituting the ionomer resin, and wherein the amount of a salt composed of a strong acid and a strong base in the ionomer resin is from 1 to 400 mg/kg.

公开(公告)号：US20230018856A1

公开(公告)日：2023-01-19

申请号：US17785464

申请日：2020-12-07

Applicant: KURARAY CO., LTD.

Inventor： Tomoka SHIROUCHI ,  Kenta TAKEMOTO ,  Takuro NIIMURA ,  Atsuhiro NAKAHARA ,  Yoshiaki ASANUMA

IPC: C08F220/14 ,  C08F220/18 ,  C08F220/06 ,  C08F210/02 ,  C08F6/16 ,  C08F8/44 ,  C08J3/14 ,  C08J5/18 ,  B32B17/10

Abstract: The present invention relates to a method of manufacturing an ionomer resin, comprising the steps of: (i) adding a poor solvent to a crude ionomer resin solution comprising a (meth)acrylic acid unit (A), a neutralized (meth)acrylic acid unit (B) and an ethylene unit (C) to allow a granular resin with a peak top particle size of from 50 to 700 μm to be precipitated; and (ii) washing the precipitated granular resin with a washing solution; wherein the total amount of the unit (A) and the unit (B) is from 6 to 10 mol % based on the entire monomeric units constituting the crude ionomer resin.