| 摘要 |
The present invention addresses the problem of producing: a poly-1-butene resin composition which can be used suitably for a water or hot water supply pipe; a water or hot water supply pipe which comprises the poly-1-butene resin composition and has an excellent stress crack resistance in a chlorine-containing aqueous environment; and a double-pipe structure which comprises the pipe and has excellent stress crack resistance in a chlorine-containing aqueous environment. The present invention relates to a poly-1-butene resin composition which comprises a specific benzoate-type additive (A) and a specific phenol-type additive (B), wherein the phenol-type additive (B) comprises a phenol-type additive (B1), a phenol-type additive (B2) and a phenol-type additive (B3), the content of each of the phenol-type additive (B1), the phenol-type additive (B2) and the phenol-type additive (B3) is 0.2 to 1.0 part by weight relative to 100 parts by weight of the poly-1-butene resin, and the ratio of the weight of the benzoate-type additive (A) to the weight of the phenol-type additive (B), i.e., (the benzoate-type additive (A)):(the phenol-type additive (B)), in the poly-1-butene resin composition is 1:1.5 to 1:5. |
