Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1997-03-04
2000-02-01
Kuhns, Allan R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
264 50, 521 56, C08J 918
Patent
active
060203889
ABSTRACT:
Methods for impregnating polymer beads comprise providing polymer beads in an impregnation chamber at a temperature from about 150.degree. F. to about 200.degree. F. and a pressure of from about 25 psig to about 100 psig, and simultaneously fluidising the polymer beads in the impregnation chamber with an impregnating gas. The gas is delivered to the chamber at a rate sufficient to cause individual polymer beads to be fluidised and for a time sufficient to impregnate the gas in the polymer beads. The apparatus adapted for such methods includes a heater, a compressor and a plurality of vents for supplying a gas to the impregnating chamber to fluidise polymer beads contained therein simultaneously with the heating and pressurising of the beads.
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Keck Daniel J.
Straub, Jr. Richard F.
Kuhns Allan R.
Tri-Technologies, Inc.
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