FROTHING DETERGENT FOR PURIFICATION OF SOLID SURFACE Russian patent published in 1996 - IPC

FIELD: purification of solid surface. SUBSTANCE: desired frothing agent contains (mass %): sodium naphthenate 25-40, polymer having formula -/-R-C(O)-NH₂/_x-...-/R-C(O)-ONa/_y-...-/R′-/_z-, difluorodichloro methane 15-30 and water up to 100. In formula of said polymer R is R-(-CH₂-CH-), R′-/-CH₂-CH=CH-CH₂-CH₂-CH(C₆H₅)-, x is 40 mol % of -C(O)NH₂ groups, y is 60 mol % of -C(O)Na- groups, z represents content of butadiene-styrene latex in polymer mass, z being 1.2 %. EFFECT: improves quality of desired product. 1 tbl