Polymerization of olefins through heterogeneous catalysis. XIII. The influence of comonomer in the solution copolymerization of ethylene
Article first published online: 10 MAR 2003
Copyright © 1993 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 49, Issue 10, pages 1709–1724, 10 September 1993
How to Cite
Jaber, I. A. and Ray, W. H. (1993), Polymerization of olefins through heterogeneous catalysis. XIII. The influence of comonomer in the solution copolymerization of ethylene. J. Appl. Polym. Sci., 49: 1709–1724. doi: 10.1002/app.1993.070491003
- Issue published online: 10 MAR 2003
- Article first published online: 10 MAR 2003
- Manuscript Accepted: 22 DEC 1992
- Manuscript Received: 7 DEC 1992
The copolymerization of ethylene with highly active TiCl4/MgCl2-supported catalysts in solution reactors at 185°C and 400 Psig pressure is presented. The performance of these highly active supported catalysts at high reaction temperature is characterized by a high initial rate that decays rapidly within the 10 min polymerization time period. In the presence of hydrogen and a comonomer, catalyst yields up to about 300 kg/g (Ti) are achieved. Kinetic data obtained on the influence of a comonomer, e.g., 1-octene or 1-hexene, indicate rate enhancement when used in moderate concentrations. Higher concentrations of comonomer result in a decreasing rate of ethylene consumption. Comonomer/ethylene molar ratios in the range 0–0.827 resulted in comonomer incorporation up to about 2.6 mol % and a small reduction in the polymer molecular weight. © 1993 John Wiley & Sons, Inc.