Granulated bleaching activators and their preparation

US5716569A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Helmut Berenbold · Wiesbaden, DE
• Georg Borchers · Bad Nauheim, DE
• Jurgen Cramer · Eppstein, DE
• Gerhard Noltner · Frankfurt am Main, DE
• Gerd Reinhardt · Kelkheim, DE
• Wilfried Schuler · Limburg, DE

Key dates

• Filing date: Oct 31, 1995
• Grant date: Feb 10, 1998
• Expiry date: Oct 31, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D17/0039
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the preparation of storage-stable granules essentially comprising a bleaching activator and an inorganic binder material, which comprises the process steps: PA1 a) mixing of a dry bleaching activator with a dry inorganic binder material, PA1 b) pressing of this mixture to give relatively large agglomerates and PA1 c) comminution of these agglomerates to the desired particle size. The invention furthermore relates to the use of the granules prepared by the processes in detergents, cleaning compositions, bleaching compositions and disinfectants.