Overbasing chemical process

Details Overbasing chemical process Overbasing chemical process

1978-06-05

1980-06-03

Vaughn, Irving

Compositions

Electrolytes for electrical devices

252 333, C10M 140, C10M 132, C10M 334, C10M 326

Patent

active

042060621

ABSTRACT:
A process for making an overbased low-soap alkaline earth metal hydrocarbylsulfonate in a single stage by mixing in an inert diluent (a) a hydrocarbyl sulfonic acid of 400-1500 molecular weight, (b) alkaline earth metal oxide or hydroxide in an amount to provide a stoichiometric excess equivalent to a total base number of at least 200 and to provide a "metal ratio" of at least 0.02.times.mol wt of the sulfonic acid, (c) an alkanol of 1-4 carbon atoms, preferably methanol, (d) water and (e) ammonium formate and then passing carbon dioxide into the mixture to convert excess alkaline earth metal base to carbonate.

REFERENCES:
patent: 2956018 (1960-10-01), Carlyle et al.
patent: 3609076 (1971-09-01), Sabol et al.

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