Detergent comprising a builder, a bleaching agent, and a copolymer

US8303721B2 · 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: Nov 6, 2012
• Expiry date: Sep 23, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D1/721
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A phosphate-free dishwasher detergent which contains a builder, bleaching agents, and also a) a copolymer comprising i) monomers from the group of mono- or polyunsaturated carboxylic acids; ii) monomers of general formula R1(R2)C═C(R3)—X—R4; and iii) optionally further monomers, and b) a nonionic surfactant of general formula R1—CH(OH)CH2O-(AO)w-(A′O)x-(A″O)y-(A′″O)z—R2. The detergent has good cleaning and rinsing results which are comparable to those of phosphate-containing dishwasher detergents or even outdo them.