Bio-based binder system

US10369623B2 · kind B2 · utility

Assignee

• University of Northern Iowa Research Foundation · US

Inventors

• Gerard R. Thiel · Cedar Falls, US
• Shoshanna R. Coon · Shell Rock, US
• Mitchell Patterson · Shorewood, US
• Andrew William Simonson · De Witt, US
• Ian Williams · Evesham, GB
• Ryan Jones · Newburgh, US

Key dates

• Filing date: Jun 30, 2016
• Grant date: Aug 6, 2019
• Expiry date: Jul 24, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J175/04
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A bio-based binder system for use in preparing foundry molds. In a preferred embodiment, the system includes the use of a) a polyermizable hydroxyl-containing component comprising a saccharide, b) an isocyanate component, and c) a catalyst, and preferably amine catalyst, component adapted to catalyze the polymerization of a) and b), in the presence of a foundry aggregate such as sand. The system can be used in any suitable manner, including in either a cold box process or no bake process as described herein.