With heavy alkyl benzene sulfonic acid as a main raw material, super high-based synthetic calcium sulfonate is prepared by neutralization and super high alkalization reaction.

The product has excellent , good oil solubility and strong acid neutralization capability, and it can immediately neutralize organic acid and inorganic acid in oil; meanwhile it also has excellent high-temperature detergency and thermal stability. It is a preferred additive for blending over-based marine cylinder oil.