Stable aqueous solutions of certain vinyl copolymers

US4271058A · kind A · utility

Assignee

• Rohm Co., Ltd. · JP

Inventors

• Hans Trabitzsch · Seeheim-Jugenheim, DE
• Josef Frieser · Weiterstadt, DE
• Achim Koschik · Darmstadt, DE
• Hermann Plainer · Reinheim, DE

Key dates

• Filing date: Jun 12, 1979
• Grant date: Jun 2, 1981
• Expiry date: Jun 12, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2300/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

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.