Patent ID: 6245871
Filing Date: 2001-06-12
Classification: C07C,C07D,C07F,C08F

Abstract:
A process for the production of polyolefins, comprising:contacting, at a temperature from about -100.degree. C. to about 200.degree. C., one or more monomers of the formula RCH.dbd.CHR.sup.3 with a catalyst comprising (i) a transition metal complex of formula I or Ia, and, optionally, (ii) a neutral Lewis acid; ##STR20##wherein R and R.sup.3 are each, independently, hydrogen, hydrocarbyl or substituted hydrocarbyl and may be linked to form a cyclic olefin;R.sup.1 and R.sup.2 are each independently hydrocarbyl, substituted hydrocarbyl, or silyl;Q is (i) C--R.sup.4, where R.sup.4 is hydrocarbyl, substituted hydrocarbyl, heteroatom connected hydrocarbyl, or heteroatom connected substituted hydrocarbyl, (ii) P(NH.sub.2).sub.2, or (iii) S(NH)(NH.sub.2) or S(O)(OH);L is a monoolefin or a neutral Lewis base that can be displaced by a monoolefin;T is hydrogen, hydrocarbyl or substituted hydrocarbyl, or may be taken together with L to form a .pi.-allyl group; andM is Ni(II), Pd(II), Co(II) or Fe(II).