Summary
Copolymers of ethylene and 1-hexexe, 1-octene and 4-methyl-1-pentene were obtained using Et[In]2ZrCl2/MAO catalyst at various pressures. The increase of 1-hexene and 1-octene concentration in the feed increases catalyst activity(g/nZr.h.bar) and productivity(g/nZr.h). For 4-methyl-1-pentene the activity is independent on comonomer concentration. Increasing the ethylene pressure the productivity of the copolymerization increases and the activity shows a weak decay. Characterization of the copolymer shows that at higher pressure the cristallinity of the copolymers is higher due to lower comonomer incorporation. There is a good linear correlation of cristallinity with comonomer concentration in the feed for 1-hexene and 1-octene at a fixed pressure, but not for 4-methyl-1-pentene.
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Mauler, R.S., Galland, G.B., Scipioni, R.B. et al. The effect of the ethylene pressure on its reaction with 1-hexene, 1-octene and 4-methyl-1-pentene. Polymer Bulletin 37, 469–474 (1996). https://doi.org/10.1007/BF00556807
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DOI: https://doi.org/10.1007/BF00556807