DEFORMATION PROCESSING LUBRICANT OF ALUMINUM ALLOY OR NONFERROUS METAL

PURPOSE:To obtain the subject deformation processing lubricant containing an alkylphosphonic acid derivative synthesized from an olefin having a double bond at alpha-position of its specific carbon number and phosphorous acid, etc., in a diluent, having excellent lubricating property and rustproof property and free from deterioration of degreasing properties. CONSTITUTION:Benzoyl peroxide, etc., is added as a catalyst to an olefin (e. g.1-octene) having a double bond at the alpha-position of its 6-60C and at least one kind of phosphorous acid, hypophosphoric acid and dialkyl phosphite, etc., in a solvent such as dioxane and the olefin is reacted with the above-mentioned phosphorus compound at 60-80 deg.C for 10hr. Then the unreacted raw material is removed by solvent extraction and the solvent is distilled off to afford an alkylphosphonic acid derivative of the formula (R1 is 6-60C alkyl; R2 and R3 are H, 1-18C alkyl, oxyalkylene, alkali metal or alkaline earth metal) e.g., octly phosphonic acid. Then the alkylphosphonic acid derivative is added to a diluent (e.g. kerosene) at an amount of 1.0-100wt.% and mixed to provide the objective deformation processing lubricating oil for aluminum alloys or nonferrous metals.