Magnesium reducing agent for producing titanium trihalide cataly

Details Magnesium reducing agent for producing titanium trihalide cataly Magnesium reducing agent for producing titanium trihalide cataly

1978-11-08

1981-01-20

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429B, 252429C, 526125, 526139, 526140, 526141, 526144, 526351, 526352, 526906, C08F 402, C08F 1000

Patent

active

042463840

ABSTRACT:
Magnesium metal is contacted with an organic halide in the absence of an ether or other complexing diluent to produce a magnesium reducing agent for converting titanium tetrahalide to titanium trihalide. In a first embodiment, the magnesium metal, organic halide, and titanium tetrahalide are introduced into a mill and milled. In a second embodiment, the organic halide is metered dropwise onto the magnesium metal in the absence of any extraneous diluent, and the resulting magnesium reducing agent is thereafter added to a titanium tetrahalide and milled. In a third embodiment, an organic halide containing the titanium tetrahalide is metered dropwise onto magnesium metal in the absence of any extraneous diluent. In each instance the resulting titanium trihalide catalyst component is contacted with an organoaluminum compound activator and used for the polymerization of olefins, preferably the polymerization of propylene.

REFERENCES:
patent: 3293232 (1966-12-01), Ingberman
patent: 3451768 (1969-06-01), Luciani et al.
patent: 3801558 (1974-04-01), Fletcher et al.
patent: 3821186 (1974-06-01), Grant
Raff et al., Crystalline Olefin Polymers, PA, I, Interscience Publ., N.Y., (1965), pp. 366-368.

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