Method for making foundry sand containing a resin binder

US4847309A · kind A · utility

Assignee

• Rohm Co., Ltd. · JP

Inventors

• Wolfgang Klesse · Mainz, DE
• Heinz Auer · Neulußheim, DE
• Peter Quis · Darmstadt, DE

Key dates

• Filing date: Mar 18, 1988
• Grant date: Jul 11, 1989
• Expiry date: Mar 18, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2333/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Methods for making foundry sand containing a binder by combining a dried powdered carboxylated polymer, partially in its salt form, with dry or wet foundry sand free of binder.