COLORED RESIN COMPOSITION FOR WATER DISTRIBUTING PIPE, AND WATER DISTRIBUTING PIPE

摘要

PROBLEM TO BE SOLVED: To provide a colored resin composition and a water distributing pipe using the same, having excellent chlorine water resistance which allows suppression of water bubble generation even after direct contact with city water containing chlorine for a long period of time, and having excellent long-term weather resistance.SOLUTION: Provided is a colored resin composition for a water distributing pipe, comprising 0.1 to 5.0 pts.mass of carbon black blended relative to 100 pts.mass of a polyolefin resin. The carbon black includes thermal black having an average particle diameter of 200 to 500 nm and carbon black having an average particle diameter of 10 to 130 nm other than the thermal black. A blend ratio of the thermal black and the carbon black other than the thermal black is 9:1 to 7:3 by a mass ratio. Furthermore, an alkaline earth metal hydroxide is blended in an amount of 0.01 to 5.0 pts.mass. Also provided is a water distributing pipe formed by molding the colored resin composition for a water distributing pipe.