Process for the production of detergent tablets for dishwashing machines

US5358655A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Hans-Friedrich Kruse · Korschenbroich, DE
• Christiane Zeise · Korschenbroich, DE
• Jochen Jacobs · Wuppertal, DE
• Juergen Haerer · Goldkronach, DE

Key dates

• Filing date: Oct 12, 1993
• Grant date: Oct 25, 1994
• Expiry date: Oct 12, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D17/0091
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for producing stable, bifunctional, phosphate- and metasilicate-free, low-alkali detergent tablets useful for dishwashing machines from granulated detergent additives consisting of sodium salts of at least one homopolymeric or copolymeric (meth)acrylic acid, comprising agglomerating the granulated detergent additives with builders and water to form an agglomerate, treating the agglomerate with hot air in a fluidized bed, mixing the agglomerate with a bleaching agent, and tabletting the mixture.