Process for forming foundry components

US4541869A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Norbert Maak · Neuss, DE
• Wolfgang Friedemann · Neuss, DE
• Hans Fehr · Goldkronach, DE
• Kurt Feulner · Essen, DE

Key dates

• Filing date: Aug 15, 1983
• Grant date: Sep 17, 1985
• Expiry date: Aug 15, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B28/26
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Aqueous alkali metal silicate bonding compositions having a molar ratio of SiO.sub.2 :Me.sub.2 O of 2.4:1 to 3.4:1, wherein Me is sodium and/or potassium, a solids content of about 35 to 50 percent by weight, and containing triethanolamine. The bonding compositions can be mixed with fillers such as quartz sand and used for the manufacture of molded forms for the casting of metals.