Process for metal salts of hydrocarbyl dithiophosphoric acid

Details Process for metal salts of hydrocarbyl dithiophosphoric acid Process for metal salts of hydrocarbyl dithiophosphoric acid

1994-02-07

1995-01-10

Willis, Jr., Prince

Compositions

Electrolytes for electrical devices

252 18, 252 35, 252 499, 556 25, C10M 148

Patent

active

053804481

ABSTRACT:
This invention relates to a process for preparing an overbased metal salt of hydrocarbyl dithiophosphoric acid comprising neutralizing hydrocarbyl dithiophosphoric acid with an amount of metal oxide sufficient to form said overbased metal salt of hydrocarbyl dithiophosphoric acid, which metal oxide has a surface area of no less than about 4 m.sup.2 per gram up to about 12 m.sup.2 per gram and whereby the overbased metal salt of hydrocarbyl dithiophosphoric acid thus formed has a base metal to phosphorus weight ratio within the range of greater than about 1.2:1 up to about 1.3:1.

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