DETERGENT-PRESERVING FLUID CONCENTRATE Russian patent published in 2003 - IPC

FIELD: special-destination fluids. SUBSTANCE: concentrate, used in the form of aqueous solutions in mechanical engineering, in particular for washing motor car parts, corrosion protection, and preserving parts for possible storage period before assemblage, contains, wt %: fatty acid-etanolamine interaction product 20- 34, mono-, di-, or triethanolamine 14-23, alkali metal nitrite 1.5-4.0, nonionic surfactant 1.5-4.0, foam suppressor 1.5-4.5, and water - the balance. Above-mentioned interaction product is, more particular, at least one compound from following series: ethanolamine ester and/or soap of synthetic fatty acid fraction C10-C16 and ethanolamine ester and/or soap of oleic acid. Above-mentioned surfactant is, more particular, at least one compound from following series: polyethylene glycol esters of monoethanolamides of synthetic fatty acids, oxyethylated fatty acids, oxyethylated alkylphenols, and oxyethylated fatty alcohols. EFFECT: increased detergent ability, improved preservation properties, and ensured stability of concentrate at low temperatures. 3 cl, 1 tbl