Process for the manufacture of polyolefins

Abstract

Abstract A PROCESS FOR HOMOPOLYMERIZING ETHYLENE OR COPOLYMERIZING ETHYLENE WITH UP TO 10% BY WEIGHT OF HIGHER AOLEFINS HAVING 3 TO 15 CARBON ATOMS IN SOLUTION, SUSPENSION OR IN THE GASEOUS PHASE AT A TEMPERATURE IN THE RANGE OF FROM 20 TO 250*C. WITH A MIXED CATALYST COMPRISING A TRIVALENT, CHLORINE-CONTAINING TITANIUM COMPOUND AND AN ORGANO-ALUMINUM COMPOUND, WITH REGULATION OF THE AVERAGE MOLECULAR WEIGHT BY MEANS OF HYDROGEN, WHICH COMPRISES CARRYING OUT THE POLYMERIZATION UNDER A PRESSURE BELOW 10 ATMOSPHERES GBAUGE, WITH REGULATION OF THE AVERAGE MOLECULAR WEIGHT WITH HYDROGEN, USING AS CATALYST 0.05 TO 0.3 MILLIMOLE OF A TRIVALENT CHLORINE CONTAINING TITANIUM COMPOUND PER LITER OF DISPERSING AGENT OR SOLVENT OR PER 0.5 LITER OF REACTOR VOLUME AND AN ORGANOALUMINUM COMPOUND IN AN AMOUT CORRESPONDING TO 0.1 TO 3.0 MILLIMOLES OF ALUMINIUM PER LITER OF DISPERSING AGENT OR SOLVENT OR REACTOR VOLUME, THE ORGANO-ALUMINUM COMPOUND BEING (A) AN ALUMIUNUM HYDROCARBON OF THE FORMULA AIR3 IN WHICH R STANDS FOR A HYDROCARBON RADICAL HAVING 4 TO 40 CARBON ATOMS, OR (B) A REACTION PRODUCT OF A TRIALKULALUMINUM OR AN ALKYLALUMINUMHYDRIDE WITH DIOLEFINS HAVING 4 TO 20 CARBON ATOMS.

Inventors

• 👤 B Diedrich
• 👤 K Keil

Bibliographic Details