Olefin polymerization catalyst and polymerization process

Details Olefin polymerization catalyst and polymerization process Olefin polymerization catalyst and polymerization process

1993-04-19

1994-01-04

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526113, 526114, 526351, 526352, 502113, C08F 470

Patent

active

052761142

ABSTRACT:
A method for making polymerization catalysts is disclosed which comprises contacting a soluble complex prepared from the combination of a metal dihalide and a transition metal compound with a particulate material comprising zirconium phosphate and then reacting the resulting mixture with an organoaluminum halide to produce a catalyst precursor. The catalyst precursor is then contacted with a halogen containing compound selected from halides of Groups IVA and VA to produce the catalyst. Novel catalysts prepared in accordance with the invention method, novel polymerization processes therewith and novel polymers having relatively high melt flow rates while retaining good mechanical strength are also disclosed.

REFERENCES:
patent: 5024982 (1991-06-01), Hawley et al.

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