Compositions – Electrolytes for electrical devices
Patent
1993-11-18
1994-12-06
Howard, Jacqueline V.
Compositions
Electrolytes for electrical devices
252 515A, C10M14106, C10M15916
Patent
active
053708059
ABSTRACT:
A railway diesel engine lubricating composition is essentially free of zinc dithiophosphate wear inhibitors and chlorinated inhibitors. This composition has an oil of lubricating viscosity; a noncarbonated sulfurized calcium alkyl phenate, a carbonated sulfurized calcium alkyl phenate, a calcium Mannich alkyl phenate, and an ethylene carbonate modified polybutene bis-succinimide. The noncarbonated sulfurized calcium alkyl phenate has a sulfur to metal ratio of between 1.1:1 and 2:1, the alkyl group of that phenate has from 8 to 35 carbon atoms, and the alkalinity value of that phenate is from 40 to 200 mg. KOH/gram. The noncarbonated sulfurized metal alkyl phenate is prepared by reacting a tetrapropylene phenol, sulfur, and a calcium base.
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Middleton Wesley A.
Smrcka Nancy K.
Chevron Research and Technology Company, a Division of Chevron U
Howard Jacqueline V.
Schaal E. A.
Turner W. K.
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