C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 10/02 (2006.01) C08F 4/642 (2006.01) C08F 10/00 (2006.01) C08F 36/02 (2006.01)
Patent
CA 2089591
A novel method for the preparation of a polyolefin such as an ethylene-based copolymeric resin is proposed. The polymeric resin obtained by the method has a very high average molecular weight to ensure excellent mechanical properties of the shaped articles therefrom but still is capable of exhibiting good molding workability by virtue of the relatively low melting point and low degree of crystallinity. The method comprises contacting an olefin monomer or monomers with a unique catalyst system compris- ing, for example, (a) a titanium compound such as titanium tetraalkoxides, (b) an aluminoxane compound and (c) an organic aluminum compound such as trialkylaluminums and/or (d) an organic compound having a .pi. electron in a molecule such as toluene, in a specified molar proportion. Prefer- ably, these catalytic ingredients are contacted with each other prior to their contacting with the monomer or monomers to be polymerized so that the catalytic activity of the catalyst system can be further enhanced.
Funabashi Hideo
Nakacho Kenji
Sugahara Akinobu
Funabashi Hideo
Idemitsu Petrochemical Company Limited
Kirby Eades Gale Baker
Nakacho Kenji
Sugahara Akinobu
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