Patent ID: 6174976
Filing Date: 2001-01-16
Classification: C08F

Abstract:
A batch or continuous process for the preparation of polyolefins comprising contacting, at a temperature from about -100.degree. C. to 200.degree. C., one or more monomers of the formula R.sup.1 CH.dbd.CHR.sup.2 with, (i) a compound of the formula I, (ii) a suitable nickel compound, and optionally, (iii) a neutral Lewis ##STR11##wherein R.sup.1 and R.sup.2 are independently hydrogen or hydrocarbyl; in addition, R.sup.1 and R.sup.2 may collectively be linked to form a non-aromatic cyclic olefin;R.sup.3 is hydrocarbyl, substituted hydrocarbyl, or silyl;R.sup.4 is hydrogen, hydrocarbyl, substituted hydrocarbyl, heteroatom connected hydrocarbyl, or silyl; andX is selected from the group consisting of ##STR12##wherein R.sup.5 is hydrogen, hydrocarbyl or substituted hydrocarbyl; andR.sup.6 is hydrocarbyl or substituted hydrocarbyl.