Title:
LINER MATERIAL FOR HIGH-PRESSURE HYDROGEN TANKS, WHICH IS FORMED FROM RESIN
Document Type and Number:
WIPO Patent Application WO/2018/168731
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a multilayer liner material which is formed from a resin and is suppressed in breakage even if filling and pressure discharge of high-pressure hydrogen are repeated. The present invention relates to a liner material for high-pressure hydrogen tanks, which is a laminate that contains a bonding layer (A), a substrate layer (B) and a barrier layer (C), while satisfying the requirements (1)-(3) described below.
(1) The bonding layer (A) contains an ethylene-based adhesive resin (A1); the substrate layer (B) contains an ethylene-based resin (B1); and the barrier layer (C) is formed from a barrier resin.
(2) The difference between the crystallinity (XA1) of the ethylene-based adhesive resin (A1) and the crystallinity (XB1) of the ethylene-based resin (B1) satisfies the following formula (I).
-18% ≤ [(XB1) - (XA1)] ≤ 18% (I)
(3) The ethylene-based adhesive resin (A1) contains from 0.01% by mass to 5.0% by mass (inclusive) of a constituent unit, which is derived from a graft monomer (D) selected from among unsaturated carboxylic acids and/or derivatives thereof, relative to 100% by mass of the ethylene-based adhesive resin (A1).
Inventors:
MAEDA TAKAHIRO (JP)
SAKUMA TAKASHI (JP)
SAKUMA TAKASHI (JP)
Application Number:
PCT/JP2018/009390
Publication Date:
September 20, 2018
Filing Date:
March 12, 2018
Export Citation:
Assignee:
MITSUI CHEMICALS INC (JP)
International Classes:
F17C1/16; B32B27/32; F17C1/06
Domestic Patent References:
| WO2016090633A1 | 2016-06-16 | |||
| WO2016069675A1 | 2016-05-06 | |||
| WO2016152945A1 | 2016-09-29 |
Foreign References:
| JP2008164131A | 2008-07-17 | |||
| JP2005315367A | 2005-11-10 | |||
| JP2004176898A | 2004-06-24 | |||
| JP2010276146A | 2010-12-09 |
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
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