Patent ID: 6075102
Filing Date: 2000-06-13
Classification: C08F

Abstract:
A polymerization catalyst comprising:(a) a transition metal compound represented by the following general formula (7) or general formula (8):(RCOO)MC.sub.p XY (7)(RCOO)MC.sub.p X (8)wherein M represents a metal of Groups 3 to 6 of the Periodic Table or a lanthanoid metal; R represents hydrogen atom, an alkyl group having 1 to 50 carbon atoms, or an aryl group having 6 to 50 carbon atoms; Cp represents cyclopentadienyl group, or a substituted cyclopentadienyl group; X and Y each independently represent hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aryl group, an alkylaryl group, or an arylalkyl group each having 6 to 20 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, an acyloxy group having 1 to 50 carbon atoms, vinyl group, allyl group, an ethynyl group, an amino group having 1 to 50 carbon atoms, an amido group, a phosphido group, an alkylthio group, an arylthio group, or a halogen atom, C represents carbon atom; and O represents oxygen atom; and(b)(i) a compound which can form an ionic complex by reaction with the transition metal compound of component (a) or(ii) a compound containing oxygen which is represented by general formula (3): ##STR15## wherein R.sup.4 to R.sup.8 each represents an alkyl group having 1 to 8 carbon atoms and may be the same with or different from each other, Y.sup.1 to Y.sup.3 each represents an element of Group 13 of the Periodic Table and may be the same with or different from each other, d and e each represents a number of 0 to 50, and d+e represents 1 or more;and/or general formula (4): ##STR16## wherein R.sup.9 and R.sup.10 each represents an alkyl group having 1 to 8 carbon atoms and may be the same with or different from each other, Y.sup.1 and Y.sup.5 each represents an element of Group 13 of the Periodic Table and may be the same with or different from each other, f and g each represents a number of 0 to 50, and f+g represents 1 or more.