Process for extraction and recovery of blowing agents from polym

Details Process for extraction and recovery of blowing agents from polym Process for extraction and recovery of blowing agents from polym

1989-04-10

1990-12-11

Spear, Frank

Liquid purification or separation

Processes

Chromatography

55 16, 55 37, 210804, B01D 5304

Patent

active

049768620

ABSTRACT:
A process for removing blowing agent from polymeric foam. The process comprises breaking up the foam in a liquid medium to obtain a solid phase of polymeric fragments and a liquid phase of blowing agent and liquid medium. The polymeric particles are then separated from said liquid phase.

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patent: 4289605 (1981-09-01), Bartholic
patent: 4531950 (1985-07-01), Burt
patent: 4531951 (1985-07-01), Burt

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