Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1979-08-03
1981-09-01
Garvin, Patrick
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252429C, 526127, 526139, 526144, 526116, 526122, 526151, C08F 464
Patent
active
042870917
ABSTRACT:
Polymerization, catalysts, and preparation thereof comprising milling magnesium metal, an organic halide, and titanium tetrahalide or the milled product in the presence of at least one of magnesium oxide, a triaryl phosphite, a polymeric material, titanium tetrahalide, vanadium tetrahalide, silicon tetrahalide, and an aluminum trihalide. The milled catalyst component can be heat treated prior to activation. The milled titanium catalyst component is activated with an organoaluminum activator producing a catalyst for olefin polymerization.
REFERENCES:
patent: 3412174 (1968-11-01), Kroll
patent: 3718635 (1973-02-01), Tomoshier et al.
patent: 3781220 (1973-12-01), Shilov et al.
patent: 3801558 (1974-04-01), Fletcher et al.
patent: 4048415 (1977-09-01), Matsuzawa et al.
patent: 4098907 (1978-07-01), Tokunaga et al.
Garvin Patrick
Phillips Petroleum Co.
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