Device and process for recovering polymer from a solution

Details Device and process for recovering polymer from a solution Device and process for recovering polymer from a solution

1986-03-10

1987-08-11

Michl, Paul R.

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

Synthetic resins

Treating polymer containing material or treating a solid...

425203, C08F 612

Patent

active

046862790

ABSTRACT:
The invention relates to a device and a process for recovering polymer from a melt or solution containing volatile components. The device consists of an evaporating zone passing, via a metering device, which can function also as a pressure-reducing device, into a devolatilizing extruder. The metering and pressure-reducing device makes it possible also to process highly viscous melts of high-molecular polymers and to fill the extruder screws incompletely so that substantial devolatilization is realized in the extruder.

REFERENCES:
patent: 3506640 (1970-04-01), Reid et al.
patent: 3963558 (1976-06-01), Skidmore
patent: 4093795 (1978-06-01), Buechner et al.
patent: 4169929 (1979-10-01), Buechner et al.
"New Applications for Twin-Screw Extruders", D. Gras, Plastics Design & Processing, Aug. (1972), pp. 24-29.
"Principles of Polymer Processing", Tadmor et al., (1979), pp. 121-122.

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