Magnesium chloride particles with a truncated structure, catalyt

Details Magnesium chloride particles with a truncated structure, catalyt Magnesium chloride particles with a truncated structure, catalyt

1992-10-26

1994-09-13

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526348, 5263486, 526351, 526352, 526909, C08F 1000, C08F 1002, C08F 1006

Patent

active

053469720

ABSTRACT:
Porous particles of MgCl.sub.2 which have essentially the shape of two truncated right cones connected by their larger bases, which truncated cones are incurved towards the axis of symmetry perpendicular to the bases, at the intersection of the envelope of the truncated cones with two orthogonal planes passing through the said axis of symmetry. These particles are impregnated with a transition metal compound and employed as a catalytic component in the polymerization of olefins. The resultant polyolefins, especially polyethylene, polypropylene and their copolymers, are comprised of particles with a distinctive structure.

REFERENCES:
patent: 4107415 (1978-08-01), Giannini et al.
patent: 4742138 (1988-05-01), Kaglyama
patent: 4762898 (1988-08-01), Matsuura et al.
patent: 4851208 (1989-07-01), Duranel et al.
patent: 4855371 (1989-08-01), Job
patent: 5028671 (1991-07-01), Kioka et al.
patent: 5137996 (1992-08-01), Bailly et al.

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