Rotating disc evapo-extrusion process and apparatus

Details Rotating disc evapo-extrusion process and apparatus Rotating disc evapo-extrusion process and apparatus

1981-08-24

1983-08-23

Garris, Bradley

Concentrating evaporators

Superheating and pressure release

With extruder

159 471, 159DIG10, B01D 122, B01D 130, B01J 1918

Patent

active

044002360

ABSTRACT:
An improved process for the removal of volatile components from polymer compositions containing volatile components such as unreacted monomers, solvents, by-products or impurities by a rotating disc evapo-extrusion, and an apparatus therefor. The present invention is particularly useful for the removal of the volatile components from polymer compositions having a high content of volatile components such as 25 to 99.9% by weight, particularly methyl methacrylate polymer compositions useful for the production of molding materials or extrusion plates which contain 60% by weight or more of methyl methacrylate monomer.

REFERENCES:
patent: 3009685 (1961-11-01), Rettig
patent: 3046603 (1962-07-01), Maxwell
patent: 3280886 (1966-10-01), Marshall et al.
patent: 3545041 (1970-12-01), Maxwell
Weissenberg, K., "A Continuum Theory of Rheological Phenomena," Nature, vol. 159 (1947).
Bryce Maxwell et al., Modern Plastics, 37, 107-114 & 202-210, (1959).

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