公开(公告)号：US20190248115A1

公开(公告)日：2019-08-15

申请号：US16307006

申请日：2017-06-29

Applicant: KURARAY CO., LTD.

Inventor： Takeyuki IGARASHI ,  Shogo NAKAZAWA

IPC: B32B27/08 ,  B32B27/30 ,  B32B7/12 ,  B32B27/32 ,  B32B27/18

CPC classification number: B32B27/08 ,  B32B7/12 ,  B32B27/00 ,  B32B27/18 ,  B32B27/28 ,  B32B27/306 ,  B32B27/32 ,  B32B2250/04 ,  B32B2250/246 ,  B32B2264/105 ,  B32B2307/558 ,  B32B2307/7265 ,  B32B2439/40 ,  B60K15/03 ,  B60K15/03177 ,  B60K2015/03493 ,  B65D1/00

Abstract: Provided is a fuel container composed of a multilayer structure containing: an ethylene-vinyl alcohol copolymer (A) layer; an adhesive resin (B) layer; a high-density polyethylene (C) layer; and a resin composition (D) layer, wherein the ethylene-vinyl alcohol copolymer (A) contains 15 to 44 mol % of ethylene, the adhesive resin (B) is a maleic anhydride-modified polyolefin having an acid value of 0.1 to 10 mgKOH/g and containing 1 to 8.5 μmol/g of magnesium element, calcium element, zinc element, or a combination thereof, the resin composition (D) contains the ethylene-vinyl alcohol copolymer (A), the adhesive resin (B), and the high-density polyethylene (C), the thickness of the (A) layer, the (B) layer, and the (C) layer satisfies specific conditions, and the ethylene-vinyl alcohol copolymer (A), the adhesive resin (B), and the high-density polyethylene (C) satisfies specific conditions. The fuel container is excellent in fuel barrier properties and impact resistance and enables stable production.

公开(公告)号：US20180148528A2

公开(公告)日：2018-05-31

申请号：US15506862

申请日：2015-08-19

Applicant: KURARAY CO., LTD.

Inventor： Wataru HIROSE ,  Takeyuki IGARASHI

IPC: C08F216/06 ,  C08F297/08 ,  C08F210/02 ,  C08F210/10

CPC classification number: C08F216/06 ,  B32B7/12 ,  B32B27/08 ,  B32B27/18 ,  B32B27/20 ,  B32B27/22 ,  B32B27/28 ,  B32B27/302 ,  B32B27/304 ,  B32B27/306 ,  B32B27/308 ,  B32B27/32 ,  B32B27/34 ,  B32B27/36 ,  B32B27/38 ,  B32B27/40 ,  B32B2250/02 ,  B32B2250/03 ,  B32B2250/05 ,  B32B2250/24 ,  B32B2270/00 ,  B32B2307/4026 ,  B32B2307/50 ,  B32B2307/51 ,  B32B2307/546 ,  B32B2307/558 ,  B32B2307/7242 ,  B32B2307/748 ,  B32B2437/02 ,  B32B2439/00 ,  B32B2439/70 ,  B32B2439/80 ,  B32B2553/00 ,  B32B2597/00 ,  B32B2607/02 ,  C08F210/02 ,  C08F210/10 ,  C08F297/08 ,  C08J5/18 ,  C08L29/04 ,  C08L53/00 ,  C08L2205/04

Abstract: A resin composition according to an aspect of the present invention comprises: an ethylene-vinyl alcohol copolymer (A); and a block copolymer (B) having a block (b1) that includes a vinyl aromatic monomer unit, and a block (b2) that includes an isobutylene unit, wherein the ethylene-vinyl alcohol copolymer (A) and the block copolymer (B) form a co-continuous phase structure; and a DSC curve obtained following heating the resin composition up to a melting point and cooling at a rate of 50° C./min in a differential scanning calorimetry analysis shows two peaks, with a higher peak top temperature falling within a range of 130° C. or greater and 170° C. or less, and a lower peak top temperature falling within a range of 100° C. or greater and less than 130° C. A resin composition may thus be obtained that is able to give a molded article that is superior in balance between gas barrier properties and flexibility.

公开(公告)号：US20180327578A1

公开(公告)日：2018-11-15

申请号：US15773183

申请日：2016-11-02

Applicant: KURARAY CO., LTD.

Inventor： Takeyuki IGARASHI ,  Wataru HIROSE

IPC: C08L23/08 ,  C08L53/02 ,  C08L29/04 ,  C08K3/26 ,  B32B27/30 ,  B32B27/32

CPC classification number: C08L23/08 ,  B32B27/28 ,  B32B27/302 ,  B32B27/306 ,  B32B27/32 ,  B32B2439/00 ,  B65D1/00 ,  B65D1/02 ,  C08K3/26 ,  C08L23/22 ,  C08L29/04 ,  C08L53/00 ,  C08L53/02 ,  C08L2201/14 ,  C08L2203/16 ,  C08L2203/30 ,  C08K13/02 ,  C08K3/01

Abstract: Provided is a resin composition, comprising: an ethylene-vinyl alcohol copolymer (A); an isobutylene-based copolymer (B) containing a halogen atom; and a halogen scavenger (C), wherein a mass ratio (B/A) of the isobutylene-based copolymer (B) to the ethylene-vinyl alcohol copolymer (A) is from 5/95 to 45/55, and a content of the halogen scavenger (C) is from 0.01 to 1 part by mass based on 100 parts by mass of a total of the ethylene-vinyl alcohol copolymer (A) and the isobutylene-based copolymer (B). Such a resin composition is excellent in gas barrier properties and flexibility and stably produced over a long period of time.

公开(公告)号：US20180319972A1

公开(公告)日：2018-11-08

申请号：US15773242

申请日：2016-11-02

Applicant: KURARAY CO., LTD.

Inventor： Wataru HIROSE ,  Takeyuki IGARASHI

IPC: C08L53/00 ,  C08L29/04 ,  C08F297/00

CPC classification number: C08L53/00 ,  A61J1/10 ,  A61L31/12 ,  C08F297/00 ,  C08K3/26 ,  C08L23/22 ,  C08L29/04 ,  C08L2201/14

Abstract: Provided is a resin composition, comprising: an isobutylene-based copolymer (A) containing a halogen atom; an ethylene-vinyl alcohol copolymer (B); and a halogen scavenger (C), wherein a mass ratio (B/A) of the ethylene-vinyl alcohol copolymer (B) to the isobutylene-based copolymer (A) containing a halogen atom is from 20/80 to 50/50, and a content of the halogen scavenger (C) is from 0.01 to 1 part by mass based on 100 parts by mass of a total of the isobutylene-based copolymer (A) containing a halogen atom and the ethylene-vinyl alcohol copolymer (B). Such a resin composition is excellent in gas barrier properties and flexibility and stably produced over a long period of time.

公开(公告)号：US20170275403A1

公开(公告)日：2017-09-28

申请号：US15506862

申请日：2015-08-19

Applicant: KURARAY CO., LTD.

Inventor： Wataru HIROSE ,  Takeyuki IGARASHI

IPC: C08F216/06 ,  C08F210/02 ,  C08F210/10 ,  C08F297/08

CPC classification number: C08F216/06 ,  B32B7/12 ,  B32B27/08 ,  B32B27/18 ,  B32B27/20 ,  B32B27/22 ,  B32B27/28 ,  B32B27/302 ,  B32B27/304 ,  B32B27/306 ,  B32B27/308 ,  B32B27/32 ,  B32B27/34 ,  B32B27/36 ,  B32B27/38 ,  B32B27/40 ,  B32B2250/02 ,  B32B2250/03 ,  B32B2250/05 ,  B32B2250/24 ,  B32B2270/00 ,  B32B2307/4026 ,  B32B2307/50 ,  B32B2307/51 ,  B32B2307/546 ,  B32B2307/558 ,  B32B2307/7242 ,  B32B2307/748 ,  B32B2437/02 ,  B32B2439/00 ,  B32B2439/70 ,  B32B2439/80 ,  B32B2553/00 ,  B32B2597/00 ,  B32B2607/02 ,  C08F210/02 ,  C08F210/10 ,  C08F297/08 ,  C08J5/18 ,  C08L29/04 ,  C08L53/00 ,  C08L2205/04

Abstract: A resin composition according to an aspect of the present invention comprises: an ethylene-vinyl alcohol copolymer (A); and a block copolymer (B) having a block (b1) that includes a vinyl aromatic monomer unit, and a block (b2) that includes an isobutylene unit, wherein the ethylene-vinyl alcohol copolymer (A) and the block copolymer (B) form a co-continuous phase structure; and a DSC curve obtained following heating the resin composition up to a melting point and cooling at a rate of 50° C./min in a differential scanning calorimetry analysis shows two peaks, with a higher peak top temperature falling within a range of 130° C. or greater and 170° C. or less, and a lower peak top temperature falling within a range of 100° C. or greater and less than 130° C. A resin composition may thus be obtained that is able to give a molded article that is superior in balance between gas barrier properties and flexibility.