Bleach catalyst granules, use thereof and washing cleaning agents containing the same

US9902921B2 · kind B2 · utility

Assignee

• WEYLCHEM WIESBADEN GMBH · DE

Inventors

• Gerd Reinhardt · Kelkheim, DE
• Michael Best · Dursley, GB
• Miriam Ladwig · Dietzenbach, DE
• Andreas Schottstedt · Hofheim, DE
• Mathias Groeschen · Hadamar, DE
• Sven Gebhard · Liederbach, DE

Key dates

• Filing date: May 9, 2014
• Grant date: Feb 27, 2018
• Expiry date: Sep 3, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D17/0091
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a bleach catalyst granules containing a metal-containing bleach catalyst, which comprises at least one ligand selected from the group comprising di- or trimethyltriazcyclononanes or derivatives therefrom, and a homo- or copolymer polycarboxylate, salts thereof or partially neutralized having a pH-value of between 3 and 9. Said granules are produced in an anhydrous granulation process, in particular by compacting, the treatment temperature being maintained at below 100° C.