Manufacture of dihydrocarbyl dithiophosphates

Details Manufacture of dihydrocarbyl dithiophosphates Manufacture of dihydrocarbyl dithiophosphates

1995-02-24

1997-05-06

Nazario-Gonzalez, Porfirio

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

556174, 508421, 508369, 508368, 508378, C07F 902, C07F 100, C07F 300, C07F 500

Patent

active

056272944

ABSTRACT:
An alcohol and/or a carboxylic acid or carboxylate is used to reduce the proportion of sediment obtained in the manufacture of a metal or ammonium dihydrocarbyl dithiophosphate, for example, a zinc dihydrocarbyl dithiophosphate (ZDDP) for use as an antiwear agent/antioxidant in crankcase lubricating oils.

REFERENCES:
patent: 3290347 (1966-12-01), Miller
patent: 3400106 (1968-09-01), Morita
patent: 3691220 (1972-09-01), Horodysky
patent: 4215067 (1980-07-01), Brannen et al.
patent: 4308154 (1981-12-01), Clason et al.

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