Process for the production of detergents in the form of fused blocks containing alkali hydroxides and, optionally, active chlorine for use in dishwashing machines

US5064554A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Jochen Jacobs · Wuppertal, DE
• Theodor Altenschoepfer · Goldkronach, DE
• Peter Jeschke · Eltville am Rhein, DE

Key dates

• Filing date: Oct 9, 1987
• Grant date: Nov 12, 1991
• Expiry date: Oct 9, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3958
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of a homogeneous, storage-stable detergent for dishwashing machines in the form of fused blocks containing alkali metal hydroxide, alkali metal silicate, water, penta-alkali metal triphosphate, active chlorine donor, and organic complexing agent; comprising preparing a melt of alkali metal silicate, alkali metal hydroxide and water, maintaining the melt at a temperature of about 50.degree. C. to about 75.degree. C., adding to the melt an active chlorine donor and an organic complexing agent, introducing the melt into a flow mixer together with a penta-alkali metal triphosphate and distributing the triphosphate in the melt, pouring the resulting liquid mixture into flexible molds, and allowing the mixture to solidify.