Overbased alkali metal additives

Details Overbased alkali metal additives Overbased alkali metal additives

C - Chemistry, Metallurgy

10

M

253/94

C10M 159/22 (2006.01) C10M 159/20 (2006.01) C10M 159/24 (2006.01)

Patent

CA 1296317

ABSTRACT A process for making an oil solution of a highly basic alkali metal compound which comprises (a) heating alkali metal hydroxide with an alkoxyalkanol and a solvent to remove water as an azeotrope with alkoxyalkanol and said solvent; (b) adding to the mixture surfactant; (c) thereafter introducing carbon dioxide into the reaction mixture so as to react with the basic compounds therein; (d) hydrolysing the reaction mixture; and (e) removing solvent by distillation, base oil being added to the process during one of steps (b), (c), (d) and (e) so that the desired product is obtained.

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