Title:
RESIN COMPOSITION FOR REFRIGERANT TRANSPORTING HOSES, AND REFRIGERANT TRANSPORTING HOSE
Document Type and Number:
WIPO Patent Application WO/2021/149421
Kind Code:
A1
Abstract:
The present invention provides a resin composition which enables the achievement of a good balance among low gas permeability, flexibility and low water vapor permeability, said properties being required for a refrigerant transporting hose. A resin composition for refrigerant transporting hoses, said resin composition containing a thermoplastic resin and an elastomer. This resin composition for refrigerant transporting hoses is characterized in that: a sea-island structure wherein the thermoplastic resin forms a matrix and the elastomer forms domains is formed; and the oxygen permeability coefficient P(O2) at the temperature of 21°C at the relative humidity of 50%, the 10% modulus M10 at the temperature of 25°C and the water vapor permeability coefficient P(H2O) at the temperature of 60°C at the relative humidity of 100% satisfy formula 1 and formula 2.
Formula 1: 0 < P(O2) × M10 ≤ 150
Formula 2: log(P(H2O)/P(O2) ≤ 0.9
Inventors:
SATO SHUN (JP)
Application Number:
PCT/JP2020/047266
Publication Date:
July 29, 2021
Filing Date:
December 17, 2020
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
C08L21/00; F16L11/04; C08L101/00
Foreign References:
| JPH06145425A | 1994-05-24 | |||
| JPH06294485A | 1994-10-21 | |||
| JPH06294484A | 1994-10-21 | |||
| JP2007032725A | 2007-02-08 | |||
| JP2007009171A | 2007-01-18 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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