公开(公告)号：US12103266B2

公开(公告)日：2024-10-01

申请号：US17161730

申请日：2021-01-29

Applicant: KURARAY CO., LTD.

Inventor： Edgard Chow ,  Astrid Torres

IPC: B32B1/08 ,  B32B7/12 ,  B32B17/02 ,  B32B17/10 ,  B32B27/12 ,  B32B27/30 ,  B32B27/32 ,  F16L11/08 ,  F17D5/00

CPC classification number: B32B1/08 ,  B32B7/12 ,  B32B17/02 ,  B32B17/10 ,  B32B27/12 ,  B32B27/306 ,  B32B27/32 ,  F16L11/08 ,  F17D5/00 ,  B32B2250/05 ,  B32B2262/101 ,  B32B2597/00

Abstract: A flexible pipe comprising at least one layer of ethylene-vinyl alcohol resin (EVOH) as the innermost layer, wherein the pipe is suitable for use under high pressure, is configured to retain mechanical properties at pressures up to at least about 1500 psig, and can also retain its structural function upon decompression.

公开(公告)号：US11383497B2

公开(公告)日：2022-07-12

申请号：US16342425

申请日：2017-10-17

Applicant: KURARAY CO., LTD.

Inventor： Edgard Chow ,  Gene Medlock ,  Wataru Hirose

IPC: B32B27/08 ,  B32B1/02 ,  B32B27/30 ,  B32B27/32 ,  B29C45/16 ,  B65D65/40 ,  B29K23/00 ,  B29L31/00

Abstract: There is provided a co-injection-molded multilayer structure having a barrier layer and outer layers laminated on both sides of the barrier layer, wherein the barrier layer is made of a resin composition comprising an ethylene-vinyl alcohol copolymer (A) and an alkali metal salt (B) of a higher fatty acid having a melting point of 250° C. or lower; a content of the alkali metal salt (B) in the barrier layer is 50 to 1500 ppm in terms of metal atoms; and the outer layers are made of a resin composition comprising an unmodified polypropylene (E) and a maleic anhydride-modified polypropylene (F) having a lower melt viscosity than that of the unmodified polypropylene (E). Although it has no adhesive layers, the co-injection-molded multilayer structure exhibits excellent adhesiveness between the barrier layer made of an EVOH resin composition and the outer layer made of a polypropylene resin composition.

公开(公告)号：US20220081523A1

公开(公告)日：2022-03-17

申请号：US17472549

申请日：2021-09-10

Applicant: Kuraray Co., Ltd.

Inventor： Edgard Chow ,  Emilio Morales ,  Wataru Hirose

IPC: C08J5/18 ,  C08L29/04 ,  B32B27/32 ,  B32B27/30 ,  B65D65/40 ,  B32B27/08 ,  B32B7/12

Abstract: A gas permeable layer is formed from an ethylene-vinyl alcohol copolymer resin composition comprising an ethylene-vinyl alcohol copolymer (A), a polyolefin (B), and an acid-modified ethylene-α-olefin copolymer (C).

公开(公告)号：US20220134724A1

公开(公告)日：2022-05-05

申请号：US17515915

申请日：2021-11-01

Applicant: Kuraray Co., Ltd.

Inventor： Edgard Chow

IPC: B32B27/30 ,  A01G9/14 ,  B32B27/08 ,  B32B7/12 ,  B32B27/32

Abstract: The disclosure relates to a multilayer film having an ethylene-vinyl alcohol copolymer (EVOH) layer, and a container type house system having the same.

公开(公告)号：US10544248B2

公开(公告)日：2020-01-28

申请号：US15625474

申请日：2017-06-16

Applicant: KURARAY CO., LTD.

Inventor： Edgard Chow ,  Robert Armstrong ,  Kentaro Yoshida

IPC: B32B1/02 ,  C08F216/06 ,  C08K9/12 ,  C08K9/08 ,  C08K5/29 ,  B32B1/08 ,  C08K9/06 ,  C08K9/04 ,  C08K5/3492 ,  C09J175/04

Abstract: OBJECTAn object is to provide a resin composition capable of forming a crosslinked product that is excellent in hot water resistance and excellent in interlayer adhesiveness when formed into a multilayered structure.SOLUTIONThe resin composition contains an ethylene-vinyl alcohol copolymer (A) and a crosslinking agent (B) with the crosslinking agent (B) in an amount of 0.6 to 15 parts by mass relative to 100 parts by mass of the ethylene-vinyl alcohol copolymer (A), the crosslinking agent (B) being a powder obtained by impregnating a porous body (BS) with a crosslinkable compound (BL) having three or more polymerizable groups and a melting point of no greater than 40° C.

公开(公告)号：US10053551B2

公开(公告)日：2018-08-21

申请号：US15305803

申请日：2015-04-24

Applicant: KURARAY CO., LTD.

Inventor： Edgard Chow ,  Wataru Hirose

IPC: C08K5/053 ,  B32B27/30 ,  C08L23/08

CPC classification number: C08K5/053 ,  B32B27/306 ,  C08L23/0861 ,  C08L29/04

Abstract: A resin composition containing an ethylene-vinylalcohol copolymer (A) and a hydroxyl group containing compound (B), the hydroxyl group containing compound (B) having a molecular weight of 200 or less, a ratio of the number of hydroxyl groups in one molecule relative to the molecular weight within a range of 0.02-0.03, and a melting point of 23° C. or higher, the content of the hydroxyl group containing compound (B) being 3-15 mass % relative to the resin composition, a molded product using the same, and a multilayer structure including a layer composed of the resin composition.

公开(公告)号：US20230311461A1

公开(公告)日：2023-10-05

申请号：US18118364

申请日：2023-03-07

Applicant: Kuraray Co., Ltd.

Inventor： Diana Maya ,  Edgard Chow ,  Makoto Okamoto

IPC: B32B27/08 ,  B32B27/32 ,  B32B27/30 ,  B32B27/34 ,  B32B7/02 ,  B65D65/40 ,  B65B25/00 ,  B65B55/02

CPC classification number: B32B27/08 ,  B32B27/32 ,  B32B27/306 ,  B32B27/34 ,  B32B27/302 ,  B32B7/02 ,  B65D65/40 ,  B65B25/001 ,  B65B55/02 ,  B32B2270/00 ,  B32B2307/7244 ,  B32B2307/7246 ,  B32B2307/704 ,  B32B2307/702 ,  B32B2274/00 ,  B32B2250/24 ,  B32B2307/7376 ,  B32B2307/412 ,  B32B2439/46 ,  B32B2439/70 ,  B32B2307/581

Abstract: The present disclosure provides a multilayer structure including a first polyolefin layer comprising a first polyolefin resin, a gas barrier layer comprising ethylene-vinyl alcohol copolymer, and a second polyolefin layer comprising a second polyolefin resin. The present disclosure further provides a package made of the multilayer structure and also methods of use thereof.

公开(公告)号：US20230294378A1

公开(公告)日：2023-09-21

申请号：US18122980

申请日：2023-03-17

Applicant: KURARAY CO., LTD.

Inventor： Edgard Chow ,  Emilio Morales ,  Makoto Okamoto

IPC: B32B5/02 ,  B32B7/12 ,  B32B27/34 ,  B32B27/30 ,  B32B27/36 ,  B32B27/32 ,  B32B27/40 ,  B32B27/08 ,  B32B27/12

CPC classification number: B32B5/02 ,  B32B7/12 ,  B32B27/34 ,  B32B27/306 ,  B32B27/36 ,  B32B27/32 ,  B32B27/40 ,  B32B27/08 ,  B32B27/12 ,  B32B2307/714 ,  B32B2260/021 ,  B32B2260/046 ,  B32B2307/7244 ,  B32B2307/54 ,  B32B5/024 ,  B32B5/022 ,  B32B2262/0253 ,  B32B2262/0276 ,  B32B2262/0261 ,  B32B2262/0238 ,  B32B2262/065 ,  B32B2262/062

Abstract: A multilayer article including a chemical-resistant layer comprising a polyurea, where the chemical-resistant layer is not an adhesive layer between two layers, and a barrier layer comprising an ethylene-vinyl alcohol copolymer. The multilayer article has good flexibility and toughness, resistance to water and chemicals, and excellent barrier properties to organic solvents and gases.

公开(公告)号：US10814596B2

公开(公告)日：2020-10-27

申请号：US15529562

申请日：2015-11-25

Applicant: KURARAY CO., LTD.

Inventor： Edgard Chow ,  Wataru Hirose

IPC: C08J5/18 ,  B32B27/30 ,  B32B27/28 ,  A01F25/13 ,  B32B27/00 ,  B32B27/40 ,  B32B27/32 ,  B32B27/08 ,  B32B27/34 ,  B32B27/36 ,  B32B27/22 ,  B32B7/12 ,  B32B27/26 ,  B65D65/02 ,  A01F15/07

Abstract: A silage film having at least one layer of a resin composition containing an ethylene-vinyl alcohol copolymer (A) and a hydroxy group-containing compound (B). In the resin composition containing the ethylene-vinyl alcohol copolymer (A) and the hydroxy group-containing compound (B), the hydroxy group-containing compound (B) has a molecular weight of less than or equal to 200, a ratio of number of hydroxy groups per molecule to the molecular weight ranging from 0.02 to 0.03, and a melting point of greater than or equal to 23° C., and a content of the hydroxy group-containing compound (B) in the resin composition ranging from 3% to 15% by mass. The silage film has excellent oxygen barrier property and stretchability (suitability for wrapping) and can be suitably used for long-term storage of silage.

公开(公告)号：US20190202182A1

公开(公告)日：2019-07-04

申请号：US16235907

申请日：2018-12-28

Applicant: KURARAY CO., LTD.

Inventor： Wataru Hirose ,  Edgard Chow

IPC: B32B27/30 ,  B32B27/32 ,  C08L23/08 ,  C08L29/04

CPC classification number: B32B27/306 ,  B32B27/327 ,  B32B2307/7242 ,  B32B2307/7265 ,  B32B2309/105 ,  B65D1/0215 ,  C08L23/08 ,  C08L29/04 ,  C08L2203/10

Abstract: A multilayer article (such as a sheet or bottle) suitable for use as a solvent barrier, the multilayer article comprising at least one an ethylene vinyl alcohol (EVOH) based barrier layer formed from a resin composition predominantly comprising an EVOH component of one or more specific types of ethylene-vinyl alcohol copolymers as described herein.