Dishwasher detergent

US8551930B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Dorota Sendor-Müller · Mülheim an der Ruhr, DE
• Johannes Zipfel · Amsterdam, NL
• Arnd Kessler · Monheim am Rhein, DE
• Volker Blank · Leverkusen, DE
• Thorsten Bastigkeit · Wuppertal, DE
• Christian Nitsch · Dressendorf, DE
• Thomas Eiting · Goldkronach, DE

Key dates

• Filing date: Mar 13, 2012
• Grant date: Oct 8, 2013
• Expiry date: Mar 13, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3757
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention is a phosphate-free automatic dishwashing agent containing a builder, said agent comprising: a) a copolymer A comprising i) at least one mono- or polyunsaturated carboxylic acid monomer, ii) at least one mono- or polyunsaturated sulfonic acid monomer, and iii) at least one additional nonionic monomer; and b) an acrylic acid homopolymer B, wherein the weight ratio of copolymer A to homopolymer B is between 10:1 and 1:3. The present agent is characterized by excellent residue inhibition, good cleaning, and clear rinsing performance in automatic dishwashing.