Olefin polymerization catalyst

Details Olefin polymerization catalyst Olefin polymerization catalyst

1980-12-29

1982-05-04

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

526125, C08F 464, C08F 402

Patent

active

043281230

ABSTRACT:
A novel catalyst composition is provided which comprises the reaction product of (A) an aluminum hydrocarbyl treated with an electron donor compound and (B) a support containing chlorine, bromine and magnesium, wherein the molar ratio of bromine to chlorine ranges between about 1:99 to about 50:50, preferably between about 2.5:97.5 to about 20:80, and most preferably between about 2.5:97.5 to about 15:85, obtained by reacting an organo magnesium compound with a mixture of chlorinated and brominated aluminum compounds, the support having been additionally treated with an electron donor compound and with titanium tetrachloride. The molar ratio of magnesium to combined chlorine and bromine in the support is not critical but generally ranges between about 1:1.6 and about 1:2.0, preferably between about 1:1.8 and about 1:2.0.

REFERENCES:
patent: 4104198 (1978-08-01), May, Jr. et al.
patent: 4163831 (1979-08-01), Gessell
patent: 4186107 (1980-01-01), Wagner

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