RUST MODIFYING AGENT Russian patent published in 2002 - IPC

FIELD: paint and varnish industry. SUBSTANCE: invention relates to rust modifying agents used for covering rust metallic surfaces, among them, showing bactericidal properties for control of hydrogen sulfide bacterium and hydrogen sulfide corrosion as a result of vital activity of sulfate-reducing microorganisms and inhibiting its leaking. Except for, they can be used for application on rust metallic surfaces with mazut and oily pollutions being without their preliminary removal and can be exploited in the range of temperatures from 30 C to 500 C. The rust modifying agent comprises the following components, wt.-%: ortho-phosphoric acid, 43.0-51.0; graphite, 27.0-34.0; cadmium oxalate, 0.4-1.0; lignosulfonates, 0.5-1.1; water, the balance. The rust modifying agent shows the transforming capacity about 200 mcm and prevents hydrogen sulfide corrosion. EFFECT: enhanced effectiveness and improved properties of agent. 1 tbl