SURFACTANT BASED ON AROMATIC EXTRACT SULFONATE

Aromatic extracts, which are accumulated through the refining of lubricating oils, are purified. Gas chromatographic analysis showed that they have several diverse components, while their structure group analysis showed their suitability for sulfonation and formulation of heavy-duty liquids. The purification method here is based on dewaxing the saturates from the aromatic extract components and treating the remaining components with active clay to remove the polyaromatics and other different resins. Sulfonation conditions for these extracts, in the presence of butyl acetate as a capturing agent, were adjusted to optimize the product yield. The isolated sulfonic acid was neutralized by adding 50% sodium hydroxide solution. Heavy-duty liquids were formulated by dissolving the obtained sodium sulfonates together with nonionic surfactant with a chemical structure based on ethylene oxide-octylphenol condensates as a foam promoter. Urea was also incorporated as a solubilizing agent. Formulated heavy-duty liquids have shown high detergency power, good emulsification, and low wetting power. Generally, they can be recommended for heavy-duty applications.