Year 2005, Month 10 (Section Full Articles, Page 2348)
Titanium(IV) chloride complexes with chiral tetraaryl-1,3-dioxolane-4,5-dimethanol ligands as a new type of catalysts of ethylene polymerization
Yu. N. Belokon´ (a), S. Ch. Gagieva (b), T. A. Sukhova (c), A. B. Dmitriev (a),
K. A. Lyssenko (a), N. M. Bravaya (c), B. M. Bulychev (b), and D. Seebach (d)
Titanium complexes of chiral ligands, (4R,5R)-2,2-dimethyl-α,α,α´,α´-tetraphenyl-1,3-dioxolane-4,5-dimethanol and its structural analogs, activated by polymethylalumoxane catalyze ethylene polymerization with an activity from 3 to 530 (kg polyethylene) (mol Ti h atm)–1. An increase in the bulk of the aryl substituents results in a decrease in the catalytic activity of the complexes.
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