Thermoplastic olefin alloys and method for producing the same

A thermoplastic olefin alloy produced in accordance with the steps comprising:

• feeding propylene, ethylene and a catalyst to a first reactor to at least partially copolymerize said propylene and ethylene to produce a first random propylene/ethylene copolymer, thereby generating a first outlet stream comprising said first random propylene/ethylene copolymer, unreacted propylene, unreacted ethylene and said catalyst;
• feeding said first outlet stream, additional propylene and additional ethylene into a second reactor to produce a first reactor blend of said first random propylene/ethylene copolymer with a second random propylene/ethylene copolymer which does not contain any substantial amount of block copolymerization product, thereby generating a second outlet stream comprising said first reactor blend, unreacted propylene, unreacted ethylene and said catalyst, said first reactor blend having an ethylene content of from 3% to 8% by weight and an MFR of less than 1;
• feeding said second outlet stream, a monoolefin selected from one or more of C.sub.3 to C.sub.10 alpha-olefins, and ethylene into a third reactor to produce a second reactor blend of said first reactor blend with an olefin copolymer elastomer, and optionally blending said second reactor blend with polypropylene to produce an olefin alloy containing 50% to 88% of said first reactor blend, 12% to 23% olefin copolymer elastomer and 0% to 33% of polypropylene;
• and
• increasing the MFR of said alloy to from 1 to 35 by blending said alloy in the presence of an organic peroxide.