Title:
SQUEEZABLE HIGH BARRIER POLYOLEFIN TUBES
Document Type and Number:
WIPO Patent Application WO/2023/228554
Kind Code:
A1
Abstract:
The present invention relates to a multilayer structure for storing or transporting a gas comprising hydrogen, wherein the multilayer structure comprises at least three layers comprising an inner layer comprising at least one first polymer, a middle layer comprising ethylene-vinyl alcohol copolymer, and an outer layer comprising at least one second polymer, and wherein the water-vapor transmission rate of the inner layer is lower than that of the outer layer. The multilayer structure has excellent hydrogen gas barrier properties. Therefore, the multilayer structure is suitable for a hydrogen storage vessel and a hydrogen transportation pipe.
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Inventors:
BALEMANS FRANK (BE)
KITAMURA MASAHIRO (JP)
KITAMURA MASAHIRO (JP)
Application Number:
PCT/JP2023/012520
Publication Date:
November 30, 2023
Filing Date:
March 28, 2023
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
B32B1/08; B32B9/00; B32B27/32
Domestic Patent References:
| WO2003072653A1 | 2003-09-04 | |||
| WO2014192838A1 | 2014-12-04 | |||
| WO2013146961A1 | 2013-10-03 |
Foreign References:
| JP2015006786A | 2015-01-15 | |||
| JP2021017286A | 2021-02-15 | |||
| JP2013180776A | 2013-09-12 | |||
| JP2003200947A | 2003-07-15 | |||
| JPH11129419A | 1999-05-18 | |||
| JP2002361779A | 2002-12-18 | |||
| JP2021053993A | 2021-04-08 |
Attorney, Agent or Firm:
SETOUCHI INTERNATIONAL PATENT FIRM (JP)
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