Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From sulfur-containing reactant
Patent
1997-07-03
2000-11-21
Boykin, Terressa M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From sulfur-containing reactant
528481, 528499, 528500, 528501, 159 47, 159 49, C08G 7514
Patent
active
06150498&
ABSTRACT:
Methods for devolatilizing polymer solutions have been invented which include, in certain aspects, dissolving a viscous polymer in a solvent forming a polymer-solvent solution, introducing the polymer-solvent solution into a thermal dryer, heating or cooling the polymer-solvent solution in the thermal dryer forming product polymer with solvent removed and separated solvent (which may include other residuals), the separated solvent with other residuals if present vaporizing in the thermal dryer forming a vapor, removing the vapor from the thermal dryer, and discharging product polymer from the thermal dryer.
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International Search Report Dated Nov. 10, 1997 issued by the EPO acting as the International Searching Authority in PCT US 97/10102.
List-Discotherm: For Thermal Processes With Free Flowing Products, By: LIST.
Equipment and Systems for Thermal Processing of Highly Viscous, Crusting, and Free Flowing Products, By: LIST.
Abel, Jr. Richard C.
Combs Robert B.
Rowland Michael E.
Smith Stanley W.
Soape Jerry W.
Boykin Terressa M.
E. I. Du Pont de Nemours and Company
The Dow Chemical Company
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