Olefin polymerization using activated chromium catalyst treated

Details Olefin polymerization using activated chromium catalyst treated Olefin polymerization using activated chromium catalyst treated

1984-07-27

1985-12-17

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526100, 526352, C08F 424, C08F 1000

Patent

active

045593949

ABSTRACT:
A catalyst is produced by contacting an already activated silica-titania supported chromium composition with a tertiary alcohol and thereafter reactivating under relatively mild conditions. Such contacting is conveniently carried out by forming a slurry of the catalyst in an inert diluent containing a small amount of the alcohol. The resulting catalyst is useful in olefin polymerization. In such polymerization operations, the catalyst offers the advantage of allowing polymerization at a lower reactor temperature to achieve a given melt flow.

REFERENCES:
patent: 3239498 (1966-03-01), Witt
patent: 3870693 (1975-03-01), Wisseroth
patent: 4081407 (1978-03-01), Short et al.
patent: 4092468 (1978-05-01), Gruber et al.
patent: 4151122 (1979-04-01), McDaniel et al.
patent: 4247421 (1981-01-01), McDaniel et al.
patent: 4460756 (1984-07-01), McDaniel et al.

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