DETERGENT INHIBITED SOLUTION FOR CLEANING OF METAL SURFACES Russian patent published in 2000 - IPC

FIELD: cleaning of metal surfaces from petroleum, oil and fat resinified contaminants with prevented corroding of cleaned surfaces; applicable for cleaning of metal vessel and metal surfaces on transport and in metal working industry. SUBSTANCE: detergent inhibited solution is a mixture of detergent and antirust composition including hydroxide 25-40 g/l; sodium hexametaphosphate 10-20 g/l; underpress broth in from of waste of fish meal production 900-1000 ml/l; N-(3,4- dichlorophenyl)-N′-methyl-N′-butyl urea 0.5-1.0 g/l and benzamide hydroxyacetic acid 0.3-0.5 g/l. EFFECT: highly efficient cleaning of metal surfaces from said contaminants. 2 tbl