Process for producing polyolefins

Details Process for producing polyolefins Process for producing polyolefins

1975-05-08

1979-05-15

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429C, 526125, 526156, 526352, C08F 402, C08F 1002

Patent

active

041549155

ABSTRACT:
An improved catalyst system is disclosed for use in the polymerization or copolymerization of olefins. The catalyst comprises a transition metal compound, an organometal compound and a composite carrier. This carrier is constituted by a SO.sub.3 treated alumina and a magnesium and/or a calcium compound. The polymerization or copolymerization of olefins such as ethylene, propylene and 1-butene is effected under conditions similar to those for reactions by means of Ziegler catalysts, but the resulting polyolefins have a wider molecular weight distribution, viz, a larger flow parameter as required for extrusion or blow molding.

REFERENCES:
patent: 3644318 (1972-02-01), Diedrich et al.
patent: 3676414 (1972-07-01), Diedrich et al.
patent: 3676415 (1972-07-01), Diedrich et al.
Chao., Dissertation Abstracts, vol. 27, No. 11, Univeristy Microfilms, Inc., (May 1967), No. 67-5902.

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