Overbased additives

Details Overbased additives Overbased additives

C - Chemistry, Metallurgy

10

M

253/22

C10M 135/10 (2006.01) C10L 1/24 (2006.01) C10M 159/24 (2006.01)

Patent

CA 1259602

ABSTRACT "Overbased Additives" A highly basic lithium sulphonate, having a TBN of at least 250 mgKOH/g is prepared by heating a mixture of lithium hydroxide monohydrate and a solvent to remove water as an azeotrope of water and said solvent prior to formation of the lithium salt of the sulphonic acid and subsequently overbasing with carbon dioxide.

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