High efficiency catalyst for high bulk density polyethylene

Details High efficiency catalyst for high bulk density polyethylene High efficiency catalyst for high bulk density polyethylene

1978-10-12

1979-09-11

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252429C, 526119, 526124, C08F 402, C08F 464

Patent

active

041674936

ABSTRACT:
A unique high efficiency catalyst for the polymerization of ethylene has been developed based on the use of methanol treated magnesium oxide as support, an equimolar mixture of titanium tetrachloride and tetrabutyltitanate as titanium source impregnated on the support, and an organoaluminum compound as reducing agent. The polyethylene produced by this catalyst has narrow molecular weight distribution, high bulk density, high melt index, and minimum catalyst residue due to the high polymer to catalyst ratio.

REFERENCES:
patent: 3642746 (1972-02-01), Kashiwa et al.
patent: 3644318 (1972-02-01), Diedrich et al.
patent: 3647772 (1972-03-01), Kashiwa
patent: 3694421 (1972-09-01), Vetter
patent: 4016344 (1977-04-01), Kochhar et al.
patent: 4071674 (1978-01-01), Kashiwa et al.

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