abstract |
METHOD FOR SEPARATION OF OIL-SOLUBLE-SOLUBLE SULPHONATES FROM THEIR OIL SOLUTIONS BY TWO STEPS The invention relates to an improved method for the isolation of oil-soluble petroleum sodium sulfonates, surfactants, used as a dispersing base for micellar-polymer plants. A known method of separating oil-soluble petroleum sulfonates from products containing oil and water-soluble sulfonates, mineral salts and non-sulfonated hydrocarbons, by which oil-soluble sulfonates |