ALL-PURPOSE DETERGENT FOR METALS Russian patent published in 2023 - IPC C11D1/66 C11D3/08 C11D3/04 C11D3/30 C11D3/36 C11D3/20 

FIELD: detergents.

SUBSTANCE: compositions of detergents, in particular those intended for cleaning metal and polymer surfaces from contaminants of various nature. A universal detergent for metals includes alkaline agents: sodium hydroxide, sodium metasilicate and water, containing a complexing agent, a corrosion inhibitor, a solvent and a nonionic surfactant, while ethylenediaminetetraacetic acid disodium salt is used as a complexing agent, hydroxyethylidene diphosphonic acid is used as an inhibitor corrosion, methoxypropanol is used as a solvent, alkyl glucoside is used as a non-ionic surfactant, with the following amounts of components in wt.%: sodium hydroxide (sodium caustic) 5-10; sodium metasilicate 1.5-3; disodium salt of ethylenediaminetetraacetic acid (Trilon B) 2-4; hydroxyethylidene diphosphonic acid (HOEDPA) 1-4; methoxypropanol (1-methoxy-2-propanol) 19-21; alkyl glucoside 0.5-1.5; water - up to 100.

EFFECT: reduced concentration of aggressive and harmful substances without reducing the quality of cleaning at lower temperatures of working solutions with simultaneous cleaning and providing short-term corrosion protection.

1 cl, 3 ex