Manufacture of particulate olefin polymers

Details Manufacture of particulate olefin polymers Manufacture of particulate olefin polymers

1975-02-20

1977-02-08

Holler, Alan

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

Synthetic resins

Polymerizing in tubular or loop reactor

526 67, 528502, C08F 214, C08F 624

Patent

active

040073211

ABSTRACT:
Particulate olefin polymers are prepared by catalytic polymerization of monoolefins in an auxiliary liquid containing the monomers to be polymerized in dissolved form and the particulate polymer product in suspended form. The reaction mixture is recycled in a loop to which the starting materials are fed and from which the particulate polymer formed is removed. The essential features are (a) that a side stream is branched off from the loop, (b) that the side stream is caused to pass through a separating zone in which particulate olefin polymer is separated by centrifugal acceleration at temperatures and pressures in the same range as present in the loop and (c) that the separated particulate olefin polymer is discharged through flashing means.

REFERENCES:
patent: 3203766 (1965-08-01), Mudd et al.
patent: 3816383 (1974-06-01), Stotko

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