Process for the preparation of a readily soluble bleach activator granulate with a long shelf life

US5100576A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Jurgen Cramer · Eppstein, DE
• Helmut Kramer · Mainz, DE
• Gerhard Noltner · Frankfurt am Main, DE
• Wilfried Schuler · Limburg, DE

Key dates

• Filing date: Dec 21, 1989
• Grant date: Mar 31, 1992
• Expiry date: Dec 21, 2009

Classification

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

Abstract

A pulverulant, dry bleach activator, in particular tetraacetylethylenediamine is first moistened with water and then mixed with a dry auxiliary, in particular, with Na carboxymethylcellulose. This mixture is then granulated.