| 摘要 |
PURPOSE:To obtain an olefinic resin composition, composed of an olefinic thermoplastic elastomer, maleic anhydride-modified low-molecular weight polypropylene and a tackifier for rubbers and capable of providing sufficient film performance without requiring primers. CONSTITUTION:An olefinic resin composition is composed of (A) 100 pts.wt. olefinic thermoplastic elastomer composed of a polyolefin resin and an olefinic copolymer rubber, preferably a partially crosslinked thermoplastic elastomer, etc., prepared by dynamically heat-treating a mixture composed of crystalline polypropylene, an ethylene-propylene-based copolymer rubber, other rubbers and/or a mineral oil-based softener in the presence of an organic peroxide, (B) 2-20 pts.wt. modified low-molecular weight polypropylene with 1-8wt.% amount of added maleic anhydride and 2000-20000 molecular weight and (C) 1-20 pts.wt. tackifier (e.g. an aliphatic petroleum resin) for the rubbers. |
