Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1985-12-23
1989-09-05
Kight, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528482, 528500, 528501, 526 67, 526 70, 210676, 210689, 210690, 210691, 210693, 210694, C08G 6538, B01D 1506, B01J 109
Patent
active
048640123
ABSTRACT:
This invention relates to a process for removing a solute from a solution. The process comprises maintaining the solution at reflux conditions to produce a vapor which evolves from the reaction solution. At least a portion of the vapor is removed from the zone and is contacted, outside of the reaction zone, with a solid removal agent which is specific for capturing to itself that portion of the vapor which was the solute to be removed and originally present in the reaction solution. After such capture, the remaining vapor is condensed and returned to the reaction zone. In another embodiment, the solute is removed from the solution by first maintaining the solution at reflux conditions in a zone to produce a vapor which evolves from the solution. At least a portion of that vapor is removed from the zone and condensed. The resultant condensate is contacted, outside of the reaction zone, with a solid removal agent which is specific for capturing unto itself the solute from the condensate. The remaining condensate is returned to the zone.
REFERENCES:
patent: 3631163 (1967-02-01), Witt
patent: 4067854 (1978-01-01), Fiorentino
patent: 4250270 (1981-02-01), Farrar
patent: 4423207 (1983-12-01), Flock et al.
patent: 4504654 (1985-03-01), Duffy
Kight John
Moore M. L.
The Dow Chemical Company
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