Phosphate-free dishwashing detergents comprising builder, bleaching agent, nonionic surfactant, copolymer and a phosphonate

US7879154B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Nadine Warkotsch · Düsseldorf, DE
• Johannes Zipfel · Amsterdam, NL
• Arnd Kessler · Monheim am Rhein, DE
• Christian Nitsch · Dressendorf, DE
• Arno Dueffels · Goldkronach, DE
• Thomas Holderbaum · Hilden, DE

Key dates

• Filing date: Aug 5, 2009
• Grant date: Feb 1, 2011
• Expiry date: Aug 5, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/361
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Phosphate-free dishwasher detergents which contain a builder, bleaching agents, a nonionic surfactant, and also a) a copolymer comprising i) sulfonic acid group-containing monomers, ii) further ionic and/or nonionic monomer, and b) phosphonate. The detergents have good scale-inhibiting, cleaning and rinsing results which are comparable to those of phosphate-containing dishwasher detergents or even outdo them.