Polypropylene-Liquid Phase Process

Abstract

Propylene gas of high purity (99.5 percent+) is fed to a reactor containing a solvent and catalyst, and polymerised in the 1iquid phase at 50-l00oe and 1-10 atmospheres to form polypropylene. The polypropylene is insoluble and precipitates as a fine The polymer slurry is transferred to a stripping tank propylene is flushed off and recycled. The catalyst dissolution in methanol and the resultant polypropylene is pack aged.