Metal dithiophosphate process and/composition

Details Metal dithiophosphate process and/composition Metal dithiophosphate process and/composition

1977-05-23

1978-04-18

Gantz, Delbert E.

Compositions

Electrolytes for electrical devices

252 33, 252 34, 252 35, 252 39, 252400A, C10M 148, C10M 342, C10M 524, C10M 746

Patent

active

040850536

ABSTRACT:
Disclosed are a process for manufacturing metal dithiophospates, and metal dithiophosphate compositions. The process for manufacturing zinc, barium, cadmium, magnesium or nickel dithiophosphates comprises reacting phosphorus pentasulfide with one or more alcohols to form a dithiophosphoric acid; neutralizing said dithiophosphoric acid with zinc, barium, cadmium, magnesium or nickel base in the presence of an acidic promoter; and reacting a substantial portion of the excess acidic promoter with a weak base. The metal dithiophosphates and lubricating oils containing said dithiophosphates are also disclosed.

REFERENCES:
patent: 3562159 (1971-02-01), Mastin
patent: 3726798 (1973-04-01), Silver et al.
patent: 3813336 (1974-05-01), Goldschmidt
patent: 3843530 (1974-10-01), Niedzielski
patent: 3898168 (1975-08-01), Brehm

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