Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
Reexamination Certificate
2006-10-17
2006-10-17
Zemel, Irina S. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Treating polymer containing material or treating a solid...
C528S203000, C528S499000, C528S500000, C528S501000
Reexamination Certificate
active
07122619
ABSTRACT:
A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising an upstream vent and/or a side feeder vent to allow flash evaporation of the solvent, and downstream vents for removal of remaining solvent. The one-step method is highly efficient having very high throughput rates while at the same time providing a polymer product containing low levels of residual solvent.
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Buckley Paul W.
Giammattei Mark H.
Johnson Norman Enoch
Keulen Jan P.
Silvi Norberto
Cantor & Colburn LLP
General Electric Company
Zemel Irina S.
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