公开(公告)号：US20200339771A1

公开(公告)日：2020-10-29

申请号：US16958559

申请日：2018-12-27

Applicant: KURARAY CO., LTD.

Inventor： Tatsuya HASEGAWA ,  Hiroshi KAWAI ,  Mizuko OSHITA

IPC: C08J5/18 ,  C08K3/38 ,  B32B27/08 ,  B32B27/30 ,  B29C55/00 ,  B29C51/00 ,  B65D65/40

Abstract: Provided are a resin composition, a production method thereof, and a molded product and a multilayer structure each including such a resin composition. The resin composition enables: even in the case in which a film formation temperature is high, excessive elevation of torque to be inhibited with occurrence of neck-in during film formation being prevented; a molded product superior in appearance characteristics to be formed continuously for a long time period, with defects such as fish eyes and streaks being prevented; and further a thermoformable multilayer structure to be produced continuously for a long time period, the thermoformable multilayer structure being capable of providing a thermoformed product superior in appearance characteristics. A resin composition containing: an ethylene-vinyl alcohol copolymer (A) having an ethylene unit content of 20 to 60 mol %; and a boron compound (B), the boron compound (B) including a free boric acid (C), with a content of the boron compound (B) with respect to the ethylene-vinyl alcohol copolymer (A) being 100 ppm or more and 5,000 ppm or less in terms of orthoboric acid, and a proportion of the free boric acid (C) in the boron compound (B) being 0.1% by mass or more and 10% by mass or less in terms of orthoboric acid.

公开(公告)号：US20200291197A1

公开(公告)日：2020-09-17

申请号：US16332586

申请日：2017-09-13

Applicant: KURARAY CO., LTD.

Inventor： Edgard CHOW ,  Kentaro YOSHIDA ,  Tatsuya HASEGAWA

IPC: C08J5/18 ,  A01F25/14 ,  A01G13/02 ,  A01G9/14 ,  A01M13/00 ,  A01F25/13 ,  E02D17/20 ,  E02D31/00 ,  C08J3/22 ,  C08K5/3435 ,  C08K5/13 ,  F16L9/12

Abstract: A resin composition contains an ethylene-vinyl alcohol copolymer (A) in which an ethylene unit content is from 10 to 60 mol %, a hindered amine-based compound (B) having a 2,2,6,6-tetraalkylpiperidine ring structure and having an alkoxy group bonded to a nitrogen atom in the structure, and a hindered phenol-based compound (C) having an ester bond or an amide bond. The resin composition contains 0.1 to 5 parts by mass of the hindered amine-based compound (B) and 0.2 to 5 parts by mass of the hindered phenol-based compound (C) with respect to 100 parts by mass of the ethylene-vinyl alcohol copolymer (A), and a mass ratio (C)/(B) is from 0.2 to 3.6.