| abstract |
(57) Abstract: A polyolefin resin composition for pipes of the present invention comprises a polyolefin resin such as polyethylene, Phenolic stabilizer consisting of -3- (3 ', 5'-dialkyl-4'-hydroxyphenyl) propionate, tetrakis [methylene-3- (3', 5'-dialkyl-4'-hydroxyphenyl) Propionate] a phenolic stabilizer composed of methane, And a phosphorus-based stabilizer comprising a phosphite compound having a phenyl group optionally substituted with an alkyl group at the 2-, 4- and 6-positions as required, dialkyl-3,3'-thiodipropionate 2,2,6,6- It contains a weather-resistant stabilizer and a pigment having a functional group in which an oxygen atom is bonded to the 4-position of a tetramethyl-4-piperidinyl group at a specific ratio. The pipe and the pipe joint of the present invention comprise the above composition. According to the present invention, a polyolefin resin composition for a pipe, which can prepare a single-layer pipe and a pipe joint more excellent in chlorine-containing water resistance than conventional pipes and pipe joints, and a pipe and a pipe joint for the same are provided. Can be provided. |