Polymerization of propene with tBuNSiMe2C5Me4TiMe2: Effects of trialkylaluminiums as additives

E.O. Dare; D.S. Ogunniyi; G.A. Olatunji; P. Chattopadhyay

doi:10.4314/bcse.v18i2.61428

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DOI:

10.4314/bcse.v18i2.61428

Keywords:

Polymerization of propene tBuNSiMe2C5Me4TiMe2 Trialkylaluminiums Syndiotactic-enriched atactic polypropene

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Vol. 18 No. 2 (2004)

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E.O. Dare

Department of Chemistry, University of Agriculture, P.O. Box 28, UNAAB Post Office, Abeokuta, Nigeria

D.S. Ogunniyi

Department of Chemistry, University of Ilorin, P.M.B 1515, Ilorin, Nigeria

G.A. Olatunji

Department of Chemistry, University of Ilorin, P.M.B 1515, Ilorin, Nigeria

P. Chattopadhyay

Department of Chemistry, University of Burdwan, Burdwan, India

Abstract

Propene was polymerized at 0 ^oC with ^tBuNSiMe₂C₅Me₄TiMe₂/MAO. Kinetic features and other parameters indicated quasi-living polymerization. Effects of various trialkylaluminiums as additives have been investigated; it was found that compounds with more bulky groups like ⁱBu₃Al, Oct₃Al increased the activities significantly whereas Me₃Al and Et₃Al reduced the activities of the catalyst system. The triad sequence in the ¹³C NMR spectrum confirmed a syndiotactic-enriched atactic polypropene.

KEY WORDS: Polymerization of propene, ^tBuNSiMe₂C₅Me₄TiMe₂, Trialkylaluminiums, Syndiotactic-enriched atactic polypropene

Bull. Chem. Soc. Ethiop. 2004, 18(2), 131-141.

Bulletin of the Chemical Society of Ethiopia
Journal / Bulletin of the Chemical Society of Ethiopia / Vol. 18 No. 2 (2004) / Articles

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Polymerization of propene with ^tBuNSiMe₂C₅Me₄TiMe₂: Effects of trialkylaluminiums as additives

E.O. Dare

D.S. Ogunniyi

G.A. Olatunji

P. Chattopadhyay

Abstract

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E.O. Dare

D.S. Ogunniyi

G.A. Olatunji

P. Chattopadhyay

Abstract

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