Imidazoline promoter overbased calcium sulfonates

Details Imidazoline promoter overbased calcium sulfonates Imidazoline promoter overbased calcium sulfonates

1987-04-01

1989-04-18

Howard, Jacqueline V.

Compositions

Electrolytes for electrical devices

252 47, 252 475, 252 482, C10M13338

Patent

active

048225029

ABSTRACT:
A composition and process for preparing an overbased calcium sulfonate, in which a specific class of compounds is employed as promoters in making overbased calcium sulfonates. These promoters give an enhanced efficiency of the conversion of lime to an oil-soluble dispersion of calcium carbonate. Low post-carbonation solids and high TBN (total base number of alkaline reserve) result from this improve promoter system. The process for preparing highly basic calcium sulfonate includes contacting an acidic gas at a temperature between 60.degree. F. to 103.degree. F., with a mixture of a sulfonic acid or calcium salt thereof, a hydrocarbon solvent, calcium hydroxide, a small quantity of co-promoter methanol, and up to 1.0% by weight of a compound with formula: ##STR1## where X=O, S, .dbd.CH, --CH.sub.2, --NH or --N.dbd.

REFERENCES:
patent: 2856361 (1958-10-01), Schlicht
patent: 3189542 (1965-06-01), Morway et al.
patent: 3470097 (1969-09-01), Lavigne et al.
patent: 3492230 (1970-01-01), Watson et al.

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