Catalyst for polymerization of olefins

Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants

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252431R, 526142, C08F 464

Patent

active

043127835

ABSTRACT:
A catalyst comprising (A) a solid catalyst component obtained by reacting a titanium compound having a hydrocarbyloxy group with an organoaluminum compound in the presence of an ether to give a liquid material or to give a solid titanium component (a) which is solubilized by addition of a tetravalent titanium halide with or without an ether without separation or after separation from the reaction mixture, and heat treating the liquid material at a temperature of 70.degree. to 180.degree. C. with or without addition of a tetravalent titanium halide, and (B) an organoaluminum compound is effective for polymerization or copolymerization of olefins with high stereoregularity and has high polymerization activity.

REFERENCES:
patent: 4135046 (1979-01-01), Harris et al.
patent: 4235745 (1980-11-01), Takahashi et al.

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