Acetonitrile derivatives as bleaching activators in detergents

US6225274A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Christian Nitsch · Dressendorf, DE
• Rainer Jeschke · Goldkronach, DE

Key dates

• Filing date: May 26, 1999
• Grant date: May 1, 2001
• Expiry date: May 26, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3905
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A method for washing dishes containing colored soil is presented involving contacting the dish surface with a dishwashing detergent containing a peroxygen compound and an activator compound of the formula R.sup.1 R.sup.2 R.sup.3 N.sup.+ CH.sub.2 CN X.sup.- where R.sup.1, R.sup.2 and R.sup.3 independently of one another represent an alkyl, alkenyl or aryl group containing 1 to 18 carbon atoms, and wherein R.sup.2 and R.sup.3 may be part of a heterocycle including the N atom, and X is an anion, to form an aqueous dishwashing detergent. The method is useful for washing colored stains from crockery and cutlery, and is effective at temperatures below 80.degree. C.