Reactivation of organochromium olefin polymerization catalyst in

Details Reactivation of organochromium olefin polymerization catalyst in Reactivation of organochromium olefin polymerization catalyst in

1974-12-04

1977-01-04

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252430, 252431R, 526113, 526126, 526194, 526352, C08F 402, C08F 422, C08F11002

Patent

active

040011968

ABSTRACT:
A particulate catalyst support containing titanium is heated to activation temperature and thereafter impregnated with a .pi. bonded organochromium compound. Thereafter the chromium-containing catalyst is reactivated, at least a portion of the reactivation occurring in the presence of oxygen. Such catalysts are particularly suitable for the production of high melt index polymer from at least one mono-1-olefin containing 2 to 8 carbon atoms per molecule.

REFERENCES:
patent: 2912421 (1959-11-01), Juveland et al.
patent: 3013002 (1961-12-01), Breslow et al.
patent: 3014020 (1961-12-01), Balthis
patent: 3326871 (1967-06-01), Shepard et al.
patent: 3709853 (1973-01-01), Karapinka

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