Borabenzene based olefin polymerization catalysts

Details Borabenzene based olefin polymerization catalysts Borabenzene based olefin polymerization catalysts

1995-01-17

1996-09-10

Nazario-Gonzales, Porfirio

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

556 52, 556 54, 556 56, 526943, C07F 1700, C07F 502

Patent

active

055547753

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.

REFERENCES:
patent: 5468889 (1995-11-01), Srebnik et al.
Article: "Borabenzene Derivatives. 21.' 2,4-Penta-Dienylboranes As Key Intermediates Of A Novel Route To Boracyclohexadienes And Boratabenzenes," Structure of [Li(TMPDA)](C.sub.5 H.sub.5 BNMe.sub.2), by Gerhard E. Herberich et al., Organometallics, 1993, pp. 2891-2893.

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