Alkaline detergent composition containing a carboxylic acid/polyalkylene oxide copolymer for hard water scale control

US9840683B2 · kind B2 · utility

Assignees

• BASF SE
• ECOLAB USA INC. · US

Inventors

• Carter M. Silvernail · Burnsville, US
• Erik C. Olson · Deerfield Beach, US
• Kerrie E. Walters · Windom, US
• Juergen Detering · Schifferstadt, DE
• Arend Jouke Kingma · Saint Paul, US
• James S. Dailey · Grosse Ile Township, US

Key dates

• Filing date: Jul 24, 2015
• Grant date: Dec 12, 2017
• Expiry date: Aug 20, 2035

Classification

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

Abstract

An alkaline detergent is described which includes the use of a copolymer in combination with an alkali metal hydroxide. The detergent maintains cleaning functions and also prevents hard water scaling, for example at application temperatures of between 145-180 degrees Fahrenheit and with a pH of 9.5 to about 13.