Patent ID: 6084042
Filing Date: 2000-07-04
Classification: C08F

Abstract:
A catalyst consisting essentially of:(i) a mixture of an alkyl aluminum compound of the formula (R.sup.1).sub.3 Al.sup.1 and (R.sup.2).sub.2 Mg wherein R.sup.1 is selected from the group consisting of C.sub.14 alkyl radicals and R.sup.2 is selected from the group consisting of C.sub.1-4 alkyl radicals in a molar ratio of Mg to Al.sup.1 from 6:1 to 8:1;(ii) a halide of the formula R.sup.3 X wherein R.sup.3 is selected from the group consisting of C.sub.1-4 alkyl radicals and X is a chlorine atom;(iii) titanium tetrachloride;(iv) VOCl.sub.3 to provide a molar ratio of Ti:V from 90:10 to 75:25; and(v) an aluminum alkoxide compound of the formula (R.sup.4).sub.2 Al.sup.2 OR.sup.5 wherein R.sup.4 and R.sup.5 are independently selected from the group consisting of C.sub.1-4 alkyl radicals to provide: a molar ratio of Mg:(Ti+V) from 6.0:1 to 8.0:1; a molar ratio of Al.sup.1 to (Ti+V) from 1:1 to 1.5:1; a molar ratio of halide to Mg from 1.9:1 to 2.3:1; and a molar ratio of Al.sup.2 to (Ti+V) from 3.0:1 to 4:1.