abstract |
A PROCESS FOR THE POLYMERIZATION OF PROPYLENE IN THE GAS PHASE IN A BED OF POWDERED POLYPROPYLENE BY MEANS OF A CATALYST SYSTEM OF: (A) A SOLUTION OF AN ALUMINUM ALKYL IN A HYDROCARBON; AND (B) A SUSPENSION OF A TITANIUM OR VANADIUM HALIDE COMPOUND IN A HYDROCARBON; IN WHICH THE TWO COMPONENTS (A) AND (B) ARE SUPPLIED SEPARATELY TO THE REACTION ZONE. D R A W I N G |