| 摘要 |
The present invention is directed to a shaped plastic roof tile preferably one shaped like a slate tile. The tile is constructed of the combination of a thermoplastic, preferably one or more polyolefin polymers, and a chlorine containing polymer in an amount to provide a final chlorine content to the tile of between 1% and 65% by weight. The polyolefin polymer is preferably a combination of polyethylene and polypropylene derived from recycled material. The chlorine containing polymer is one or more polymers selected from the group consisting of polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), polyvinylidene dichloride (PVDC), chlorinated polyolefin, acrylate modified PVC, neoprene rubber, copolymers of vinyl chloride with ethylene, propylene, vinyl acetate, vinyl dichloride, and butadiene, copolymers of vinylidene chloride with butyl acrylate and nitrile, and polymer blends of PVC with acrylonitrile-butadiene-styrene (ABS), acrylic-styrene-acrylonitrile (ASA), nitrile rubber, and polyvinyl acetate (EVA). Preferably, the chlorine containing polymer is recycled neoprene rubber.
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