Compositions – Electrolytes for electrical devices
Patent
1991-09-12
1994-01-11
Willis, Jr., Prince
Compositions
Electrolytes for electrical devices
252495, 252370, 427327, 554 75, 554156, 554195, C10M10100, B01D 900
Patent
active
052778320
ABSTRACT:
Methods for treating spent reactive soap lubricant baths employed in a cold forming process for metal treatment are described. One method involves treatment of the spent solution with acid to form stearic acid, collection of the stearic acid, and reaction of the stearic acid with a metal salt to form metal stearates. This method is preferably used to prepare sodium stearate. An alternative method involves treatment of a basic (i.e., pH greater than 7 or preferably greater than 10) spent reactive soap lubricant bath with certain metallic stearates, including aluminum stearate, zinc stearate, aluminum stearate, zinc stearate, barium stearate, lithium stearate, and calcium stearate. The metal stearates can be used in conventional lubricant formulations used in the metal forming or metal working industry. Sodium stearate recovered by the present invention is of sufficient purity that it can be reused in reactive soap lubricant baths. In one preferred embodiment, the process of this invention is incorporated into a cold forming operation, thereby providing for an essentially closed process relative to the sodium stearate component.
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Berbiglia Catherine M.
Gill Colman A.
Freiborne Industries, Inc.
Silbermann James M.
Willis Jr. Prince
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