Detergent compacts

US4913832A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Hans-Friedrich Kruse · Korschenbroich, DE
• Jochen Jacobs · Wuppertal, DE
• Theodor Altenschoepfer · Goldkronach, DE
• Peter Jeschke · Eltville am Rhein, DE

Key dates

• Filing date: Jan 24, 1989
• Grant date: Apr 3, 1990
• Expiry date: Jan 24, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D17/0078
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A detergent compact for dishwashing machines based on alkali metal metasilicates, pentalkali metal tripolyphosphates, active chlorine compound, and surfactant. The compact comprises a cold water-soluble tablet (1) or melt (2) of the metasilicates, tripolyphosphates and surfactant, and a warm water-soluble melt (1) or tablet (2) of the metasilicates, tripolyphosphates and active chlorine compound. The tablet (1) and melt (1) or melt (2) and tablet (2) are combined into a compact having varying solubility at varying water temperatures.