Process for producing polyolefin elastomer employing a metalloce

Details Process for producing polyolefin elastomer employing a metalloce Process for producing polyolefin elastomer employing a metalloce

1997-12-15

2000-05-09

Wu, David W.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526127, 526160, 526132, 526336, 526904, 526943, C08F 3600

Patent

active

060605723

ABSTRACT:
A liquid phase polymerization process is provided for producing a polyolefin elastomer, e.g., one derived from ethylene, another .alpha.-olefin such as propylene and, optionally, a diene, employing a metallocene catalyst. The process comprises contacting monomer under liquid phase polymerization conditions with a catalyst composition obtained by combining (a) a metallocene procatalyst, preferably one containing a bridging group possessing at least two bulky groups, and (b) a cocatalyst such as aluminoxane, preferably a cation-generating cocatalyst, in partial on total replacement of aluminoxane.

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