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US 12,422,096 B2Granted
Liner and pressure vessel
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsKeisuke Ito, Nobuhiko Matsumoto
Life of this patent
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Abstract
To provide a liner which contains a polyamide resin, wherein the polyamide resin contains a diamine-derived structural unit and a dicarboxylic acid-derived structural unit; 50 mol % or more of the diamine-derived structural unit is derived from a xylylenediamine; a content of a toughness improver in a region up to 30% in a thickness direction from one surface of the liner is from 5 to 20 mass %; and a content of the toughness improver in a region up to 30% in a thickness direction from the other surface of the liner is 0.5 mass % or less.
Claims19
A liner comprising a polyamide resin, wherein
- the polyamide resin contains a diamine-derived structural unit and a dicarboxylic acid-derived structural unit,
- 50 mol % or more of the diamine-derived structural unit is derived from a xylylenediamine,
- a content of a toughness improver in a region up to 30% in a thickness direction from one surface of the liner is from 5 to 20 mass %, and
- a content of the toughness improver in a region up to 30% in a thickness direction from the other surface of the liner is 0.5 mass % or less.
1 more element
Dependencies are inferred from the claim text.