Borabenzene based olefin polymerization catalysts
AssigneeOccidental Chemical Corporation
InventorsRamesh Krishnamurti, Sandor Nagy, Bradley P. Etherton
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Abstract
Disclosed is a catalyst having the general formula ##STR1## where Q is a ligand containing the ring ##STR2## R is hydrogen, N(R').sub.2, OR', or R', each R' is independently selected from alkyl from C.sub.1 to C.sub.10, aryl from C.sub.6 to C.sub.15, alkaryl C.sub.7 to C.sub.15, and aralkyl from C.sub.7 to C.sub.15, each X is independently selected from hydrogen, halogen, alkoxy from C.sub.1 to C.sub.10, dialkylamino from C.sub.1 to C.sub.10, methyl, ##STR3## each R.sub.1 is independently selected from halogen, alkoxy from C.sub.1 to C.sub.10, and R', L is ##STR4## Q, or X, where L can be bridged to Q, B is an optional base, "n" is 0 to 5, and M is titanium, zirconium, or hafnium.
Claims20
A catalyst having the general formula ##STR14## where Q is a ligand containing the ring ##STR15## R is selected from the group consisting of hydrogen, N(R').sub.2, OR', and R', each R' is independently selected from the group consisting of alkyl from C.sub.1 to C.sub.10, aryl from C.sub.6 to C.sub.15, alkaryl from C.sub.7 to C.sub.15, and aralkyl from C.sub.7 to C.sub.15, each X is independently selected from hydrogen, halogen, alkoxy from C.sub.1 to C.sub.10, dialkylamino from C.sub.1 to C.sub.10, methyl, ##STR16## each R.sub.1 is independently selected from the group consisting of halogen, alkoxy from C.sub.1 to C.sub.10, and R', L is selected from the group consisting of ##STR17## Q, and X, where L can be bridged to Q, B is an optional Lewis base, "n" is 0 to 5, and M is selected from the group consisting of titanium, zirconium, and hafnium.
A catalyst having the general formula ##STR22## where Q is ##STR23## each X is independently selected from the group consisting of chlorine and methyl, L is Q, ##STR24## or chlorine, R is --N(CH.sub.3).sub.2 or alkyl substituted phenyl from C.sub.7 to C.sub.15, and B is an optional Lewis base.
A catalyst having the general formula ##STR25## where Cp is cyclopentadienyl, Q is ##STR26## and R is --N(CH.sub.3).sub.2 or alkyl substituted phenyl from C.sub.7 to C.sub.15.
Dependencies are inferred from the claim text.