Process for producing high melt flow poly-olefin polymers

Details Process for producing high melt flow poly-olefin polymers Process for producing high melt flow poly-olefin polymers

1974-09-23

1976-06-01

Holler, Alan

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C08F 202, C08F 206, C08F 238, C08F29708

Patent

active

039609871

ABSTRACT:
Propylene, for example, is polymerized with crystalline TiCl.sub.3 --AlCl.sub.3 and diethylaluminum monochloride catalyst at a rate of at least 300 lbs. polymer/lb. catalyst/hr. based on TiCl.sub.3 with partial H.sub.2 pressure of about 150 to about 1000 psi and sufficient total pressure to maintain propylene in liquid form. The resulting propylene homopolymer, while still containing active catalyst residues, is then reacted further with at least one additional alpha-olefin, preferably ethylene or ethylene-containing alpha-olefin mixtures in suitable amounts. The resulting waxy block copolymer has a melt flow of 40 to 400 as determined by ASTM-D-1238-62T at 230.degree.C.

REFERENCES:
patent: 3051690 (1962-08-01), Vandenberg
patent: 3193360 (1965-07-01), Scoggin
patent: 3301921 (1967-01-01), Short
patent: 3318976 (1967-05-01), Short
patent: 3378607 (1968-04-01), Jones et al.
patent: 3514501 (1970-05-01), Leibson et al.

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