Process for preparing peroxyborate agglomerates

US5399328A · kind A · utility

Assignee

• Peroxid-Chemie GmbH · DE

Inventors

• Werner Doetsch · Homborn, DE
• Richard R. Roesler · Wexford, US
• Werner Zeiss · Puchheim, DE
• Rudolf Siegel · Neuwied, DE

Key dates

• Filing date: Feb 6, 1991
• Grant date: Mar 21, 1995
• Expiry date: Feb 6, 2011

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2/22
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process is described for preparing peroxyborate agglomerates having an active oxygen content of at least 14% by weight in which amorphous primary particles composed of peroxyborate prepared by a spray drying process are subjected to compacting pressing-agglomeration. Briquettes, compressed strips and tablets can be obtained which can be comminuted, if desired, to peroxyborate granules of desired particle size and bulk density. Advantageous, optionally colored, peroxyborate agglomerates, particularly peroxyborate granules are prepared. Preferred agglomerates and granules are composed of sodium peroxyborates.