Method of continuous extraction of plasticizer from battery sepa

Details Method of continuous extraction of plasticizer from battery sepa Method of continuous extraction of plasticizer from battery sepa

1996-08-14

1998-06-30

Therkorn, Ernest G.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Including surface treatment of porous body

264 49, 264233, 264344, 21050027, B01D 6700

Patent

active

057729352

ABSTRACT:
Plasticizer extraction from polymer membranes such as battery separators and the like, by exposure to a solvent-water combination. The water or steam is supplied to form an additional interface in a bulk solvent, and to agitate the solvent and control the temperature, as well. At the extractor exit, as well as the inlet, a water elbow is furnished in such a manner as to prevent solvent vapor contact with the atmosphere, and to keep the extractor body under some excessive pressure.

REFERENCES:
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patent: 5041225 (1991-08-01), Norman
patent: 5186835 (1993-02-01), Masuoka
patent: 5238623 (1993-08-01), Meozinski

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