process for the removal of soluble compounds of tin from esters of mono - or polycarboxylic acids

摘要

A process for removing soluble compounds of tin from esters of mono- or poly-carboxylic acids and of mono- or poly-hydric alcohols, useful in the field of oleodynamic fluids, wherein the esters are treated with 5-sulfo-salicylic acid, whereby tin is precipitated as an insoluble compound, and the thus formed precipitate is separated from the purified esters.