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Studies on ethyl ene/1-hexene copolymerization over the zirconocene catalyst supported on MAO-modified MgCl2(THF)(2)

Białek M., Utrata A., Czaja K.

Polimery

2002

T. 47, nr 1

59-63

The activity of a MgCl2(THF)(2)/MAO/Cp2ZrCl2/MAO catalyst was studied in copolymerization of ethylene with 1-hexene in relation to Al:Zr mole ratio (1500-7000 at 50degreesC), experimental temperature (20-70degreesC), and time (20-90 min at 50degreesC; 10-55 min at 65degreesC). As the temperature and the Al:Zr ratio were increased, the activity of the catalyst rose. At the same time, the degree of incorporation of 1-hexene into the polymer chain increased and the M, melting point and crystallinity of the copolymer decreased. The catalyst was stable throughout the copolymerization. The process rate and copolymer properties were not affected by copolymerization time.

Synthesis and characterization of ethylene-1-hexene copolymers prepared by using MgCl2(THF)2 - supported Ziegler-Natta catalysts.

Białek M., Czaja K.

Polimery

2000

T. 45, nr 4

293-296

Ethylene was copolymerized with 1-hexene over vanadium and titanium catalysts supported and activated. So far these catalyst systems have not been known as initiators of ethylene-1-hexene copolymerization.

Przeprowadzono kopolimeryzację etylenu z 1-heksenem na katalizatorach wanadowych i dla porównania na katalizatorze tytanowym, osadzonych na kompleksowym nośniku magnezowym i aktywowanych.