Process for granulating perborate monohydrate

US5182054A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Volker Bauer · Neuberg, DE
• Wilfried Raehse · Goldkronach, DE
• Klaus Koester · Langenfeld, DE
• Jochen Jacobs · Wuppertal, DE

Key dates

• Filing date: Feb 19, 1992
• Grant date: Jan 26, 1993
• Expiry date: Feb 19, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B15/12
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The process of preparing granules of sodium perborate monohydrate having an increased density by dry-compacting a mixture of sodium perborate monohydrate and from about 0.2 to about 30% by weight of a compacting aid, based on the weight of the mixture. The compacting aid is selected from the group consisting of an alkali metal salt, alkaline earth metal salt, carbohydrate, anionic surfactant, and nonionic surfactant. After forming a compactate of the mixture, the compactate is size-reduced to obtain granules having the desired particle size.