Title:
THERMOPLASTIC RESIN COMPOSITION FOR REFRIGERANT TRANSPORTATION HOSE AND REFRIGERANT TRANSPORTATION HOSE
Document Type and Number:
WIPO Patent Application WO/2022/185779
Kind Code:
A1
Abstract:
Provided is a water-vapor barrier material having balanced properties of flexibility, heat resistance, thermal aging resistance and water-vapor barrier performance, which are required for refrigerant transportation hoses. This thermoplastic resin composition for a refrigerant transportation hose contains a thermoplastic resin and elastomer, and is characterized in that a 10% modulus M10 [MPa] at 25°C, a water vapor permeation coefficient PCH2O [g∙mm/(m2∙24h)] at a temperature of 60°C and a relative humidity of 100%, rupture strength TB150 [MPa] demonstrated in a tensile test at 150°C, and breaking elongation EB150 [%] demonstrated in a tensile test at 150°C satisfy equation (1), equation (2), and equation (3). Equation (1): 0.9 ≤ M10 × PCH2O ≤ 90; equation (2): 1.0 ≤ TB150 ≤ 20; and equation (3): 50 ≤ EB150.
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Inventors:
WAKABAYASHI KENTA (JP)
TOMOI SHUSAKU (JP)
SATO SHUN (JP)
TOMOI SHUSAKU (JP)
SATO SHUN (JP)
Application Number:
PCT/JP2022/002446
Publication Date:
September 09, 2022
Filing Date:
January 24, 2022
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
F16L11/04; C08L21/00; C08L101/00
Domestic Patent References:
| WO2021019836A1 | 2021-02-04 |
Foreign References:
| JP2020105284A | 2020-07-09 | |||
| JPH09143366A | 1997-06-03 | |||
| JPH06145425A | 1994-05-24 | |||
| JP2007327027A | 2007-12-20 | |||
| JPH06294485A | 1994-10-21 | |||
| JP2014095093A | 2014-05-22 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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