Process for the production of a washing additive in tablet form

US4642197A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Hans-Friedrich Kruse · Korschenbroich, DE
• Klaus Koester · Langenfeld, DE
• Franz-Josef Carduck · Haan, DE
• Heinz-Manfred Wilsberg · Goldkronach, DE
• Rolf Puchta · Haan, DE

Key dates

• Filing date: May 13, 1985
• Grant date: Feb 10, 1987
• Expiry date: May 13, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D17/0073
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A powdery activator for per compounds is granulated by, at the same time, mixing it together with nonionic surface-active compounds certain nitrogen-containing compounds and, optionally, the water-soluble salt of an alkane polyphosphonic acid. The granulate thus obtained is powdered with a powdery absorbent and the powdered granulate is sprayed with a liquid binder and dried to a water content of at most 6% by weight. After the addition of a tablet disintegrating agent, the dried granulate is formed by compression under special conditions into tablets having special properties. When added to a wash liquor containing a standard detergent containing a per compound, the tablets improve the removal of fatty/oily stains, pigment-containing soil and bleachable stains.