초록 ▼

A method for treatment of boiler waters is disclosed. The method comprises a synergetic combination of a methacrylic acid-containing polymer with a strongly interacting nonionic surfactant, together with a chelant and/or a phosphate-generating species. The method is particularly effective when the s

A method for treatment of boiler waters is disclosed. The method comprises a synergetic combination of a methacrylic acid-containing polymer with a strongly interacting nonionic surfactant, together with a chelant and/or a phosphate-generating species. The method is particularly effective when the surfactant is an alkoxylated alkylphenol or an alkoxylated alkylphenol ether.

대표청구항 ▼

A method of controlling the formation and deposition of materials including soluble salts of calcium, magnesium, and iron on the structural parts of a steam generating system containing an aqueous system, which materials would deposit and/or form and deposit under steam generating conditions, which

A method of controlling the formation and deposition of materials including soluble salts of calcium, magnesium, and iron on the structural parts of a steam generating system containing an aqueous system, which materials would deposit and/or form and deposit under steam generating conditions, which method comprises introducing into said aqueous system a sufficient amount for the purpose of a dispersant comprised of a water soluble methacrylic acid-containing polymer containing from about 5 to 100 mole % of methcrylic acid, a chelant selected from the froup consisting of ethylenediaminetetracetic acid, nitrilotriacetric acid, hydroxyethylethylenediaminetetraacetic acid and water soluble salts thereof, and a nonionic surfactant, wherein the amounts of said chelant and said surfactant introduced synergetically enhance the dispersant activity of said polymer.