Two step method of cleaning, sanitizing, and rinsing a surface

US10358622B2 · kind B2 · utility

Assignee

• ECOLAB USA INC. · US

Inventors

• Jennifer Stokes · Saint Paul, US
• Carter M. Silvernail · Burnsville, US
• Erik C. Olson · Deerfield Beach, US
• Steven J. Lange · Saint Paul, US
• Junzhong Li · Saint Paul, US
• Xin Sun · Eagan, US
• Allison Brewster · Windom, US
• Richard Staub · Oronoco, US

Key dates

• Filing date: Jul 26, 2017
• Grant date: Jul 23, 2019
• Expiry date: Oct 3, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D2111/44
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Methods employing detergent compositions comprising phosphinosuccinic acid oligomers (PSO) in combination with a sanitizing rinse aid are disclosed. The methods beneficially clean, sanitize and rinse a surface in an efficient two-step process. The detergent compositions employ phosphinosuccinic acid adducts, namely mono-, bis- and oligomeric phosphinosuccinic acid (PSO) derivatives, in combination with an alkalinity source and optionally polymers and/or surfactants. The sanitizing and rinsing compositions employ peroxycarboxylic acid compositions in combination with a nonionic defoaming and wetting surfactant.