Pyrithione preservative system in solid rinse aid products

US10781403B2 · 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: May 10, 2019
• Grant date: Sep 22, 2020
• Expiry date: May 10, 2039

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.