Water-soluble pyrazole derivatives as corrosion inhibitors

US10519116B2 · kind B2 · utility

Assignee

• ECOLAB USA INC. · US

Inventors

• Anand Harbindu · Pune, IN
• Jothibasu Seetharaman · Nellikkuppam, IN
• Jeffery M. Atkins · Aurora, US
• Deepak Rane · Mumbai, IN
• Vaideeswaran Sivaswamy · Pune, IN

Key dates

• Filing date: May 27, 2016
• Grant date: Dec 31, 2019
• Expiry date: May 1, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23F11/149
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Disclosed are nitrogen-containing heterocyclic compounds of relatively low aquatic toxicity and methods of using the heterocyclic compounds as corrosion inhibitors. The present method is used to inhibit corrosion of a metal surface in contact with an aqueous system using pyrazole derivatives, and provides enhanced protection against corrosion of metals in aqueous systems. The method comprises the use of corrosion inhibitors that are generally resistant to halogen attack and provide good corrosion resistance in the presence of oxidizing halogen-based biocides. Formulations comprising pyrazole derivatives are also disclosed.