COPOLYMERIZATION OF ETHYLENE AND LINEAR 1-OLEFINS WITH A METALLOCENE CATALYST SYSTEM UNDER HIGH-PRESSURE .2. COMPARISON OF PROPENE, 1-BUTENE, 1-HEXENE AND 1-DECENE

The copolymerization of ethylene and linear 1-olefins under high press ure and high temperature was examined using a metallocene/methylalumin oxane system. The reactivity ratios of copolymerization as well as the physical properties of the resulting copolymers were determined. The polymerization was performed in a continuously operated stirred autocl ave at 150 MPa and in the temperature range between 393 K and 493 K. A ratio of 22000 mol Al/mol Zr was applied based upon a metallocene con centration of 6 X 10(-3) mol-ppm.