| 摘要 |
PURPOSE: To from a tubular formed article for plumbing made of a polypropylene resin being prevented from deterioration of the resin and improved in durability when used as plumbing tube, a joint, etc. CONSTITUTION: This tubular formed article is made of a polypropylene resin composition obtained by compounding a polypropylene resin with (A) 1,3,5-tris(2,6-dimethyl-3-hydroxy-4-t-butylbenzyl)isocyanurate, (B) pentaerythrit-tetra(#8- alkyl-thiopropionate) and (C) a benzotriazole compound in an amount of 0.05-3 pts.wt. of each of (A), (B) and (C) based on 100 pts.wt. of the polypropylene resin and in the compounding ratio of the component (A) to the component (B) of <=1.0. |
