Process for producing polyolefins

Details Process for producing polyolefins Process for producing polyolefins

1984-02-08

1985-06-25

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502125, 526125, 526128, 5263486, 526352, 526901, C08F 402, C08F 1000

Patent

active

045255520

ABSTRACT:
A process for the homopolymerization or copolymerization of olefins is disclosed, which is carried out in the presence of a catalyst system comprising the combination of at least one organometallic compound with a transition metal compound supported on a solid carrier, said solid carrier being obtained by the reaction of (a) a magnesium halide, (b) a compound represented by the formula: Al(OR).sub.n X.sub.3-n, where R is a hydrocarbon residual group having 1 to 24 carbon atoms, X is a hydrogen atom, and n is 0<n.ltoreq.3, and (c) a compound represented by the formula: Si(OR').sub.m X.sub.4-m, where R' is a hydrocarbon residual group having 1 to 20 carbon atoms, X is a halogen atom, and m is 0.ltoreq.m.ltoreq.4. The resulting polymers are characterized by a large bulk density and a narrow range of molecular weight distribution.

REFERENCES:
patent: 3991260 (1976-11-01), Matsuura et al.
patent: 4202953 (1980-05-01), Matsuura et al.
patent: 4209602 (1980-06-01), Kuroda et al.
patent: 4315999 (1982-02-01), Matsuura et al.

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