Autorefrigerated polymerization process

Details Autorefrigerated polymerization process Autorefrigerated polymerization process

1979-01-11

1980-07-22

Levin, Stanford M.

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

Synthetic resins

Removing and recycling removed material from an ongoing...

528498, C08F 202, C08F 628

Patent

active

042140633

ABSTRACT:
A process for the polymerization of propylene or copolymers of propylene and other olefins is described wherein monomer is contacted with a catalyst in a reaction zone having both a liquid and a vapor phase followed by subjecting a polymer slurry withdrawn from the reaction zone to a degassing step and a wash step in a liquid phase wash zone using propylene as the wash liquid.

REFERENCES:
patent: 3259614 (1966-07-01), Pollock
patent: 3271380 (1966-09-01), Dietz
patent: 3356669 (1967-12-01), Houser
patent: 4053697 (1977-10-01), Asada et al.
patent: 4058652 (1977-11-01), Smith et al.

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