Title:
POLYAMIDE RESIN COMPOSITION FOR MOLDED PRODUCT CONTACTING HIGH PRESSURE GAS
Document Type and Number:
WIPO Patent Application WO/2023/249051
Kind Code:
A1
Abstract:
Provided is a polyamide resin composition having high fluidity and an excellent hydrogen gas barrier property when made into molded products, and does not compromise flexibility in low-temperature environments. This polyamide resin composition for a molded product that contacts high-pressure hydrogen gas includes an aliphatic homopolyamide resin (A) and an aliphatic copolyamide resin (B), and as an optional component, at least one compound (C) selected from the group consisting of fatty acids having 18-32 carbon atoms and derivatives thereof, and does not substantially include a polyolefin resin. The relative viscosity of (A) is 1.80-2.70, the relative viscosity of (B) is 2.90-4.20, the relative viscosity of a mixture of (A) and (B) is 2.30-3.60, and in 100 mass% of the polyamide resin composition, the total of (A) and (B) is 93.0-100 mass%, (C) accounts for 0-2.0 mass%, and other components account for 0-5.0 mass%, with the ratio of (A) and (B) being 50:50 to 90:10 on a mass basis.
Inventors:
WAKASUGI KAZUYO (JP)
SHIGEMITSU NOZOMU (JP)
SHINDO TATSUNORI (JP)
FUKUI YASUHARU (JP)
KURATA HIDEYUKI (JP)
HORIIKE YUMA (JP)
SHIGEMITSU NOZOMU (JP)
SHINDO TATSUNORI (JP)
FUKUI YASUHARU (JP)
KURATA HIDEYUKI (JP)
HORIIKE YUMA (JP)
Application Number:
PCT/JP2023/022930
Publication Date:
December 28, 2023
Filing Date:
June 21, 2023
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
UBE CORP (JP)
UBE CORP (JP)
International Classes:
C08L77/00; C08K5/09; F17C1/16; F17C5/06
Domestic Patent References:
| WO2016136025A1 | 2016-09-01 | |||
| WO2021157606A1 | 2021-08-12 |
Foreign References:
| JP2020117637A | 2020-08-06 | |||
| JP2009191871A | 2009-08-27 |
Attorney, Agent or Firm:
TSUKUNI & ASSOCIATES et al. (JP)
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