초록 ▼

What is disclosed are stable aqueous solutions, useful for example to treat water to stabilize its hardness and to render it anticorrosive or biocidal, containing a dissolved cationic component, such as polyvalent metal cation or a cationic surface active agent, and a dissolved anionic vinyl copolym

What is disclosed are stable aqueous solutions, useful for example to treat water to stabilize its hardness and to render it anticorrosive or biocidal, containing a dissolved cationic component, such as polyvalent metal cation or a cationic surface active agent, and a dissolved anionic vinyl copolymer comprising both anionic monomer units having a carboxylic acid group and units of a anionic monomer having an ammonium group.

대표청구항 ▼

An aqueous solution comprising (1) 20 to 99 percent by weight of water; (2) 0.5 to 79 percent by weight of a water-soluble vinyl copolymer comprising (A) 10 to 90 mol percent of units of an ab10 to 90 mol percent of units of a cationic vinyl monomer containing ammonium groups, and (C) 0 to 80 mol pe

An aqueous solution comprising (1) 20 to 99 percent by weight of water; (2) 0.5 to 79 percent by weight of a water-soluble vinyl copolymer comprising (A) 10 to 90 mol percent of units of an ab10 to 90 mol percent of units of a cationic vinyl monomer containing ammonium groups, and (C) 0 to 80 mol percent of units of one or more further non-ionic comonomers copolymerizable with monomers (A) and (B); and (3) 0.5 to 79 percent by weight of at least one water-soluble ionic or ionizable compound having a precipitating effect on an aqueous solution of polyacrylic acid.