Synergistic stain removal through novel MGDA/GLDA/STPP chelator combination

US10246667B2 · kind B2 · utility

Assignee

• ECOLAB USA INC. · US

Inventors

• Tobias Foster · Saint Paul, US
• David W. Gohl · Eagan, US
• Sven Klose · Essen, DE
• Dirk Kullwitz · Tönisvorst, DE
• John Mansergh · Cottage Grove, US
• Timothy Meier · Saint Paul, US
• Beana Pathicheril · Saint Paul, US

Key dates

• Filing date: Jun 13, 2018
• Grant date: Apr 2, 2019
• Expiry date: Jun 13, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D2111/14
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a concentrated detergent composition comprising an alkali metal carbonate, methylglycinediacetic acid, glutamic acid N,N-diacetic acid, and alkali metal tripolyphosphate. The composition is particularly suited to remove tea and coffee soil in warewashing applications.