Preparation of overbased metal naphthenate lubricating oil compo

Details Preparation of overbased metal naphthenate lubricating oil compo Preparation of overbased metal naphthenate lubricating oil compo

1977-02-09

1978-07-11

Gantz, Delbert E.

Compositions

Electrolytes for electrical devices

252 18, C10M 124, C10M 318, C10M 516, C10M 022

Patent

active

041000846

ABSTRACT:
A method for the preparation of overbased metal naphthenates of improved clarity and filterability by reacting a mixture of an oil soluble metal naphthenate, and a metal hydroxide in a light hydrocarbon-alcohol-nonpolar diluent oil solvent medium with carbon dioxide at a temperature of 140 to 155.degree. F using a mole ratio of metal hydroxide to metal naphthenate ranging from 1:1 to 10:1 and a CO.sub.2 to metal naphthenate mole ratio of 0.75 to 1.1, allowing the mixture to stand for 1 to 100 hours; then filtering the resulting carbonated mixture and recovering the desired composition wherein the degree of overbasing of the naphthenate ranges from 1 to 10.

REFERENCES:
patent: 2616905 (1952-11-01), Asseff et al.
patent: 2616925 (1952-11-01), Asseff et al.
patent: 2695910 (1954-11-01), Asseff et al.
patent: 2865956 (1958-12-01), Ellis et al.

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