Patent ID: 6689893
Filing Date: 2004-02-10
Classification: C07C,C08K,C10M,C10N

Abstract:
A process for preparing a shelf stable haze free liquid of an overbased alkaline earth metal salt of a fatty acid comprisingreacting an alkaline earth metal base and a fatty acid with an equivalent ratio of metal base to fatty acid being greater than 1:1 in the presence of liquid hydrocarbon, carbonating the mixture to produce amorphous alkaline earth metal carbonate, adding during carbonation a dispersion of alkaline earth metal base, a liquid hydrocarbon and an aliphatic alcohol having at least 8 carbon atoms in relative amounts at a controlled rate of alkaline earth metal base addition to produce a stable haze free liquid reaction product, and removing water from the reaction product to obtain a shelf stable haze free liquid overbased alkaline earth metal salt.