Coated sodium percarbonate particles, process for the production thereof and use thereof

US6113805A · kind A · utility

Assignee

• Degussa-Huels AG · DE

Inventors

• Rudiger Schutte · Scheinfeld, DE
• Ivan Pelgrims · Kontich, BE
• Lothar Kaiser · Heusenstamm, DE
• Martin Bewersdorf · Gelnhausen, DE

Key dates

• Filing date: Apr 24, 1998
• Grant date: Sep 5, 2000
• Expiry date: Apr 24, 2018

Classification

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

Abstract

Sodium percarbonate particles stabilized against loss of active oxygen in detergents, bleaches and cleaning agents by the application of a two-layer coating applied by means of a fluidized bed spray process, the inner layer including sodium percarbonate and the outer layer including sodium sulphate.