DETERGENT COMPOSITION FOR CLEANING METALLIC SURFACE Russian patent published in 2000 - IPC

FIELD: degreasing of metal surfaces prior to phosphotizing or coloring. SUBSTANCE: detergent composition comprises, wt %: trisubstituted sodium phosphate, 8-11; disubstituted sodium phosphate, 18-22; sodium tetraborate, 8-10; polyglycol ether of fatty synthetic alcohols 1-3; 3,5-5% solution aqueous of alkylphosphoric acid salts, 0.01-3.5; not more than 6% of at least one compound selected from oxyethylated mononylphenol based on trimers of propylene, monoethanolamine salt of alkylphosphoric acid 2- ethylhexyl ester, alkylphenyl polyoxyethylene glycol acetal and calcined soda, up to 100. EFFECT: reduced content of ecologically harmful phosphates of the composition which is non-toxic and has insignificant corroding effect on steels. 1 tbl