Resin composition for refrigerant-transporting hose and method of producing the resin composition, and refrigerant-transporting hose

摘要

A resin composition for a refrigerant-transporting hose, including: a semi-aromatic polyamide resin (A) as a main component; an aliphatic polyamide resin (B); and an elastomer (C), in which the aliphatic polyamide resin (B) is dispersed in a phase formed of the semi-aromatic polyamide resin (A) and the elastomer (C), which is not crosslinked, is incorporated in the form of particles into the dispersed aliphatic polyamide resin (B). Thus, excellent refrigerant permeation resistance and acid resistance, and at the same time, for example, extrusion processability and flexibility, are obtained.

主权项

1. A refrigerant-transporting hose, comprising one or more constituent layers,
wherein at least an innermost layer of the constituent layers is formed of a resin composition containing a semi-aromatic polyamide resin (A) as a main component, an aliphatic polyamide resin (B) and an elastomer (C), wherein the aliphatic polyamide resin (B) is dispersed in a phase formed of the semi-aromatic polyamide resin (A), wherein the elastomer (C), which is not crosslinked, is incorporated in the form of particles into the dispersed aliphatic polyamide resin (B), and wherein the semi-aromatic polyamide resin (A) is a polyamide 9T (PA9T).