Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
Patent
1996-07-23
1999-01-19
Teskin, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Treating polymer containing material or treating a solid...
528481, 528483, 528498, 528502C, 528503, 159 471, 159DIG4, 159DIG16, C08F 610
Patent
active
058614745
ABSTRACT:
A process has been invented for removing contaminants (including solvent) from a flowing polymer, the process, in one aspect, including dissolving a sparingly soluble stripping agent into a flowing polymer, the sparingly soluble stripping agent stripping contaminants from the flowing polymer creating a mixture of contaminants and sparingly soluble stripping agent, which flows out from the flowing polymer, and separating the mixture from the polymer. In one aspect, recyclable sparingly soluble stripping agent is recovered and re-used.
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Jimenez Pat
Lescure Bernard M.
Rosenau Michele L.
Weller Joseph P.
Wilson Lawrence D.
Teskin Fred
The Dow Chemical Company
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