Storage stable bleach activator granules

US6270690A · kind A · utility

Assignee

• Clariant Corporation · DE

Inventors

• Johannes Himmrich · Eppstein, DE
• Frank-Peter Lang · Hattersheim, DE

Key dates

• Filing date: Sep 15, 1998
• Grant date: Aug 7, 2001
• Expiry date: Sep 15, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3935
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to storage-stable bleach activator granules consisting essentially of a bleach activator and an acid-modified phyllosilicate, prepared by mixing a dry bleach activator with a dry, acid-modified phyllosilicate, compressing this mixture to give relatively large agglomerates and comminuting these agglomerates to the desired particle size.