Abstract: Refrigeration oil compositions, additives for forming such compositions, and refrigeration charges comprising a refrigeration oil composition combined with a chlorofluorocarbon refrigerant. The improvement is incorporation the refrigeration oil of a halogenated paraffin as an antiwear additive. Surprisingly, this additive does not substantially decrease the sealed tube stability of the composition, nor does it raise the floc point of the composition when used in an amount effective to increase the Falex failure load of the refrigeration oil composition.

Abstract: A process for preparing highly basic magnesium sulfonates useful as lubricants including (a) forming an admixture of an oil-soluble sulfonic acid, a previously overbased magnesium sulfonate having a TBN in excess of about 200, a lower alkanol, and a volatile solvent, (b) heating the admixture to neutralize the acid, (c) cooling the first admixture and then forming a second admixture by adding magnesium oxide, naphthenic acid, a lower alkanol and a diluent oil, (d) carbonating the second admixture with carbon dioxide, while simultaneously adding water and ammonia or an ammonium compound as promoters, during the addition of about the first 25% of the carbon dioxide, (e) heating the carbonated solution to remove water and the lower alkanol, (f) further carbonating the solution for a short time between 180.degree. F. and 220.degree. F.