| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain the subject composition containing a polyolefin resin, a pigment, and a metal oxide, excellent in chlorine-containing water resistance and capable of providing such a molded product as not generating bubbles on its surfaces, even when directly brought into contact with the chlorine- containing water. SOLUTION: This colored resin composition comprises (A) a polyolefin resin (preferably polyethylene, polypropylene or polybutene), (B) a pigment (preferably a blue pigment), and (C) a divalent metal oxide (preferably ZnO, MgO, CaO). Pellets to be supplied to molding processes as such among the composition preferably comprise 100 pts.wt. of the component A, 0.01-10 pts.wt. of the component B and 0.001-10 pts.wt. of the component C. A pellet-like coloring agent (master batch) containing the pigment in a high concentration preferably comprises 100 pts.wt. of the component A, 0.1-100 pts.wt. of the component B and 0.02-100 pts.wt. of the component C. Molded products suitable for use in the pipes of water supply, etc., can thereby be obtained.</p> |
