Polymerization catalysts

Details Polymerization catalysts Polymerization catalysts

1981-02-10

1983-04-12

Smith, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526125, 526351, 526906, C08F 402, C08F 1000

Patent

active

043798985

ABSTRACT:
Polymerization catalyst preparation comprising milling magnesium metal, an organic halide and titanium tetrahalide in the presence of a triaryl phosphite and an aluminum trihalide but in the absence of a complexing diluent. The titanium catalyst component is activated with an organoaluminum activator producing a catalyst for olefin polymerization. In one embodiment, the titanium catalyst component is milled in the presence of magnesium oxide. In another embodiment, the milled titanium catalyst component is subjected to heat treatment.

REFERENCES:
patent: 4130503 (1978-12-01), Fodor
patent: 4187196 (1980-02-01), Giannini et al.
patent: 4220554 (1980-09-01), Scata et al.
patent: 4243552 (1981-01-01), Welch et al.
patent: 4246384 (1981-01-01), Selman
patent: 4260708 (1981-04-01), Fodor
patent: 4265785 (1981-05-01), Giannini et al.
patent: 4288579 (1981-09-01), Miyoshi et al.

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