Method for the devolatilization of thermoplastic materials

Details Method for the devolatilization of thermoplastic materials Method for the devolatilization of thermoplastic materials

1988-08-11

1990-08-28

Schofer, Joseph L.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528501, 528502, 159 61, 159 49, 264102, 264344, C08F 600

Patent

active

049526723

ABSTRACT:
This invention is a method and an apparatus for rapidly devolatilizing a product of a polymerization process containing at least one volatile material. The product is initially devolatilized in a high temperature zone, and the foamed devolatilized product is separated into a gas and a liquid polymer phase and rapidly removed therefrom to minimize depolymerization and degradation of the polymer. The partially devolatilized product is further devolatilized by feeding it into a rotatable chamber which is rotated at a sufficient angular velocity to create a high gravitational field to form a vapor and a polymer liquid pool.

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Chem. Eng. Hndbk., J.H. Perry (ed.) 3rd ed., McGraw-Hill Co., Inc., N.Y., 1950, 657.

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