Water distribution pipe comprising a colored polyethylene resin composition

摘要

A colored resin composition for water distribution pipes comprising a resin which comprises a polyolefin resin as a main component and a blue fine powder pigment of a composite oxide which is a fine powder, contains elements other than the main metals introduced into the crystal structure, or has been treated mechanochemically and a colored resin water distribution pipe comprising this colored resin composition. The water distribution pipe comprising the colored resin composition which is made of a polyolefin containing a blue pigment as the coloring component shows excellent resistance to water containing chlorine as the bactericide so that discoloration of the coloring component and formation of blisters on the inner face of the pipe by water containing chlorine can be prevented.