Resin composition and injection-molded article

The present invention relates to a resin composition and an injection-molded article. Particularly, the present invention relates to a resin composition that can provide a molded article superior in mold release properties, flexibility and heat resistance, especially when used in injection molding, and to the injection-molded article. The improved release properties of the resin composition according to the present invention are very desirable for the finish and productivity of the molded article. The resin composition according to the present invention is most suitably used for making, in particular, injection-molded articles to which are required flexibility and heat resistance, such as containers, caps, packings and gaskets. A resin composition containing:(A) an ethylene- -olefin copolymer having a melt flow rate of from 0.5 to 100 g/10 min, a density of from 860 to 920 kg/m, and a highest melting peak temperature of from 50° C. to 110° C.;(B) an ethylene homopolymer or ethylene- -olefin copolymer having a melt flow rate of from 0.5 to 100 g/10 min, a density of from 910 to 980 kg/m, and a highest melting peak temperature of from 110° C. to 135° C.; and(C) a low-density polyethylene having a melt flow rate of from 0.5 to 100 g/10 min, and a swell ratio of from 1.3 to 2.0, provides a molded article superior in mold release properties, flexibility and heat resistance, particularly when used in injection molding.