Pyrithione preservative system in solid rinse aid products

US10865363B2 · kind B2 · utility

Assignee

• ECOLAB USA INC. · US

Inventors

• Tobias Foster · Saint Paul, US
• Andrew M. Jensen · Windom, US
• Katherine Molinaro · Saint Paul, US
• Nathan D. Peitersen · Saint Paul, US
• Elaine Black · Saint Paul, US

Key dates

• Filing date: Aug 22, 2018
• Grant date: Dec 15, 2020
• Expiry date: Aug 22, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D17/0073
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Solid rinse aid compositions and methods of making and using the same are disclosed. Solid rinse aid compositions include in a single concentrate composition a pyrithione preservative system to replace conventional preservatives in the isothiazolinone family, such as chloromethylisothiazolinone. Beneficially, the pyrithione preservative systems eliminate the need for any personal protective equipment to handle the solid rinse aid compositions. Methods of making and use using the rinse aids are also disclosed.