High efficiency catalyst for polymerizing olefins

Details High efficiency catalyst for polymerizing olefins High efficiency catalyst for polymerizing olefins

1978-09-05

1981-01-06

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, 526122, 526125, 5263485, 526352, C08F 402, C08F 1002

Patent

active

042437857

ABSTRACT:
.alpha.-Olefins are polymerized by conducting the polymerization in the presence of a catalyst prepared by reacting tetravalent or trivalent titanium compounds such as a titanium tetralkoxide, an anhydrous nickel compound such as nickel chloride, an organomagnesium component such as a hydrocarbon soluble complex of dialkyl magnesium and an alkyl aluminum and a halide source such as a hydrogen halide or an alkyl aluminum halide. Polymerization processes employing this catalyst composition do not require conventional catalyst removal steps in order to provide polymers having suitable color and other physical characteristics and these catalysts produce polymers having broader molecular weight distributions than do corresponding catalysts without the anhydrous nickel compound.

REFERENCES:
patent: 3737393 (1973-06-01), de Vries
patent: 4120820 (1978-10-01), Birkelbach

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