| abstract |
Oil-soluble sulfonated polyols and oil-soluble, partially sulfonated polyol ester reaction products of C 6 -C 10,000 hydrocarbon substituted C 4 -C 10 dicarboxylic acid materials, e. g. alkenyl succinic anhydride, have been readily produced under reaction conditions characterized by conducting said reaction in the presence of at least a sediment-reducing amount of a hydrocarbon soluble C 12 -C 60 , preferably a C 24 -C 36 , hydrocarbon substituted sulfonic acid whereby sediment resulting from said reaction is markedly reduced to less than 1 vol.% and filtration of the reaction product is facilitated. n The products are suitable as dispersants, in particular as additives for lubricating oils. |