pH-controlled release of detergent components

US6407052B2 · kind B2 · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Thomas Gassenmeier · Goldkronach, DE
• Juergen Millhoff · Goldkronach, DE
• Thomas Mueller-Kirschbaum · Solingen, DE

Key dates

• Filing date: Feb 26, 2001
• Grant date: Jun 18, 2002
• Expiry date: Feb 26, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D2111/12
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process of washing textiles is presented involving the delayed release of ingredients from a detergent composition. The process involves first dissolving the detergent in water resulting in a pH below 8, slowly dissolving the coating on a coated alkalizing agent to raise the pH to above 8.5, and dissolving the polymeric acid coating on a detergent ingredient, due to the pH above 8.5, to release the ingredient into the wash water.