Patent ID: 6291387
Filing Date: 2001-09-18
Classification: C07C,C08F,C10M,C10N,Y02P,Y10S

Abstract:
A transition metal-free catalyst system for synthesizing high molecular weight, linear polymers of ethylene and .alpha.-olefins, consisting essentially of (1) an aluminum alkyl component represented by the formula AlR.sub.x H.sub.3-x, where R is an alkyl group and 0 is less than x and x is less than or equal to 3; and (2) a Lewis acid or Lewis acid derivative component capable of activating said aluminum alkyl component such that the polymerization activity of the resulting catalyst system is on the order of from about 0.01 to about 100 kg/mol catalyst.multidot.hr., said Lewis acid or Lewis acid derivative being selected from the group consisting of (a) B(C.sub.6 F.sub.5).sub.3, (b) [(CH.sub.3).sub.2 N (H) (C.sub.6 H.sub.5)].sup.+ [B (C.sub.6 F.sub.5).sub.4 ].sup.-, (C)[(C.sub.2 H.sub.5).sub.3 NH].sup.+ [B(C.sub.6 F.sub.5).sub.4 ].sup.-, (d) [C(C.sub.6 F.sub.5).sub.3 ].sup.+ [B(C.sub.6 F.sub.5).sub.4 ].sup.-, (e) (C.sub.2 H.sub.5).sub.2 Al(OCH.sub.3), (f) (C.sub.2 H.sub.5).sub.2 Al-(2,6-di-t-butyl-4-methylphenoxide), (g) (C.sub.2 H.sub.5)Al(2,6-di-t-butylphenoxide).sub.2, (h) (C.sub.2 H.sub.5).sub.2 Al(2,6-di-t-butylphenoxide, (i) 2,6-di-t-butylphenol.multidot.methylaluminoxane, (j) an alkylaluminoxane, and mixtures thereof.