| 摘要 |
PURPOSE: A method for inhibiting the scale of an aqueous dish washing system is provided to suppress the formation of gaseous inorganic silica scale and at least one organic scale induced by use of organic carboxylate in the presence of divalent and polyvalent cations. CONSTITUTION: A method of controlling scale in aqueous dishwashing systems comprises a step for adding at least one high molecular weight terpolymer made from one or more monoethylenically unsaturated C3 to C6 monocarboxylic acids, one or more monomers having a sulfonic acid group, and one or more monoethylenically unsaturated monomers polymerizable with (I) and (II). In another embodiment, a high molecular weight copolymer made from one or more monoethylenically unsaturated C3 to C6 monocarboxylic acids and one or more monomers having a sulfonic acid group is added to the aqueous dishwashing system. Additionally, the present invention provides a machine dishwashing formulation comprising: a builder, which comprises not more than 2% by weight of one or more phosphate groups, based on the total weight of the dishwashing formulation; and the terpolymer or copolymer. |
