Preparation of overbased magnesium sulfurized phenates

Details Preparation of overbased magnesium sulfurized phenates Preparation of overbased magnesium sulfurized phenates

1978-06-20

1980-04-01

Lone, Werren B.

Compositions

Electrolytes for electrical devices

568780, C10M 140, C07C 3700

Patent

active

041960890

ABSTRACT:
Preparation of overbased magnesium sulfurized phenates having total base members in the range of about 200 to about 275 by a two-stage procedure, the first stage of which involves dissolving a sulfurized oil-soluble aliphatic hydrocarbyl-substituted phenol, particularly a C.sub.6 -C.sub.30 alkyl phenol, in certain types of high boiling organic polar solvents, exemplified particularly by methyl "Cellosolve," and admixing therewith magnesium oxide in an amount such that, upon refluxing the mixture, a fully neutralized sulfurized alkyl phenol results; and wherein, in the second stage of said procedure, the composition produced in the first stage of the procedure is overbased by admixing therewith a magnesium alkoxide carbonate complex in an amount such as to produce the final overbased magnesium sulfurized phenate compositions having the aforesaid total base number.

REFERENCES:
patent: 3718589 (1973-02-01), Roger
patent: 3772198 (1973-11-01), Cease et al.
patent: 3801507 (1974-04-01), Hendrickson
patent: 4049560 (1977-09-01), Dominey

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