Chemistry of hydrocarbon compounds – Purification – separation – or recovery – By addition of extraneous agent – e.g. – solvent – etc.
Patent
1981-01-26
1982-07-13
Sever, Frank
Chemistry of hydrocarbon compounds
Purification, separation, or recovery
By addition of extraneous agent, e.g., solvent, etc.
203DIG19, B01D 336
Patent
active
043396232
ABSTRACT:
A purification process for monomers and solvents used in the production of polymers by solution polymerization comprises supplying impure monomer and solvent to a distillation column which rejects light and heavy impurities from the top and bottom respectively and which dries the monomer-solvent mixture by azeotropic distillation, and withdrawing a pure monomer solvent vapor as a side stream from a point intermediate the top and bottom of the column.
REFERENCES:
patent: 2729599 (1956-01-01), Ohsol et al.
patent: 2729600 (1956-01-01), Beach
patent: 3681202 (1972-08-01), Funkhouser
patent: 4166774 (1979-09-01), Wagner
Morgan Peter J.
Wyllie Kenneth I.
Sever Frank
The International Synthetic Rubber Company, Limited
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