Beşergil B.Akin A.Çelik S.2024-07-222024-07-22200708885885http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/19302This review covers a method for preparing an overbased detergent-dispersion additive called overbased calcium sulfonate solution (OBCSS) containing 38.9% (w/w) CaCO3, with a total base number (TBN) value of 436 mg KOH, starting from neutral calcium sulfonate solution (NCSS).1,2 After the column conditions were optimized, the reaction parameters (PCO2 and the amounts of Ca(OH)2, water, and monoethanolamine (MEA)) were examined throughout the tests. The first product medium alkali calcium sulfonate solution (MACSS) with 8.5% (w/w) CaCO3 (TBN = 95 mg KOH/g) is obtained, but higher base values could not be reached. In the second stage, monoethanolamine is added to the feed as a promoter and high alkali calcium sulfonate solution (HACSS) containing 30.4% (w/w) CaCO3 with the value of TBN = 274 mg KOH/g is obtained. In the third stage of the study, targeted product OBCSS is obtained by using HACSS as a feedstock component instead of NCSS. © 2007 American Chemical Society.EnglishAminesCalcium compoundsDetergentsDispersionsSynthesis (chemical)AminesCalcium compoundsDispersionsSynthesis (chemical)Medium alkali calcium sulfonate solution (MACSS)Overbased calcium sulfonate solution (OBCSS)Reaction parametersTotal base number (TBN)DetergentsArticle10.1021/ie061582h