| 摘要 |
<p>Disclosed is a bonding resin composition composed of a blend consisting essentially of (a) maleic anhydride-modified, stereoregular polypropylene having a combined maleic anhydride concent of about 0.5-0.8% by weight of said modified polypropylene, and (b) base polymer material at about 25 parts by weight per part by weight of said maleic anhydride-modified polypropylene. The base polymer material is selected from a group of two combinations. One combination consists essentially of stereoregular polypropylene and essentially crystalline, sequentially polymerized propylene-ethylene product having a combined ethylene content of about 25% by weight of the product. The weight ratio of the polypropylene to the product is about 1:3-3:1. The other combination consists essentially of essentially crystalline, sequentially polymerized propylene-ethylene product having a combined ethylene content of about 7% by weight of the product, and essentially crystalline, sequentially polymerized propylene-ethylene product having a combined ethylene content of about 25% by weight of the product. The weight ratio of the two products is about 1:3-3:1. Also disclosed is a laminate of the bonding resin composition and a metal such as steel or aluminium. Further disclosed is a method for making the laminate.</p> |
