Bleach activators in granular form

US5334324A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Christiane Zeise · Korschenbroich, DE
• Jochen Jacobs · Wuppertal, DE
• Wilfried Raehse · Goldkronach, DE

Key dates

• Filing date: Feb 3, 1993
• Grant date: Aug 2, 1994
• Expiry date: Feb 3, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D1/72
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing free-flowing granules containing a bleach activator and a substantially water-free binder for the bleach activator. The process consists essentially of premixing a mixture of anionic and nonionic surfactants and the bleach activator, homogenizing the resulting mixture to form a paste which is extrudable in strand form, extruding the paste under elevated pressure, and cutting the extrudate into granules.