Devolatilization

Details Devolatilization Devolatilization

1988-11-15

1990-06-19

Manoharan, Virginia

Concentrating evaporators

Fluid feed or discharge devices

159 46, 159 471, 159DIG10, 159DIG16, 264102, 425 721, 425 722, 528501, B01D 100, B29D 700

Patent

active

049344331

ABSTRACT:
The efficiency of falling strand devolatilizers is related to a number of factors incluidng the foaming of the polymer melt and the time the melt in both foam and strand form is held in the devolatilizer. The level of residual material including monomers, dimers, trimers, and diluents, in a polymer melt may be reduced by passing the melt sequentially through a preheater operated at relatively low pressure then through a horizontal melt distributor at the top of a devolatilizer chamber.

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