Rubber composition for hose, and hose
View Patent ↗A rubber composition for a hose of the present technology contains: an ethylene-propylene copolymer having an ethylene content of 40 mass % or greater but less than 60 mass %; an ethylene-1-butene copolymer; and carbon black having a nitrogen adsorption specific surface area of 17 to 52 m 2 /g; a mass ratio of the ethylene-1-butene copolymer to the ethylene-propylene copolymer (ethylene-1-butene copolymer/ethylene-propylene copolymer) being from 10/90 to 90/10.
1. A rubber composition for a hose comprising:
an ethylene-propylene copolymer having an ethylene content of 40 mass % or greater but less than 60 mass %;
an ethylene-1-butene copolymer; and
carbon black having a nitrogen adsorption specific surface area of 17 to 52 m 2 /g;
a mass ratio of the ethylene-1-butene copolymer to the ethylene-propylene copolymer (ethylene-1-butene copolymer/ethylene-propylene copolymer) being from 10/90 to 90/10.
2. The rubber composition for a hose according to claim 1 , wherein a content of the carbon black is from 55 to 130 parts by mass per 100 parts by mass total of the ethylene-propylene copolymer and the ethylene-1-butene copolymer.
3. The rubber composition for a hose according to claim 1 , further comprising an anti-aging agent having a mercapto group.
4. The rubber composition for a hose according to claim 2 , further comprising an anti-aging agent having a mercapto group.
5. A hose comprising an outermost layer formed with the rubber composition for a hose described in claim 1 .
6. The hose according to claim 5 , wherein the hose comprises a reinforcing layer arranged on an inner side of the outermost layer, and the reinforcing layer is a fiber reinforcing layer in which reinforcing yarn is braided into a spiral structure and/or a braid structure.
7. The hose according to claim 5 , wherein the hose is an air conditioner hose for an automobile.