PROCESS FOR MAKING FOUNDRY SAND MOLD

摘要

A foundry sand mold is produced by molding a granular refractory material with the use of (1) a binder comprising a silane coupling agent, a water-soluble phenolic resin and a silane compound selected from an alkyl silicate having 1 to 8 carbon atoms in the alkyl group, its lower condensate, a silicone oil and a modified silicone oil and (2) a hardening agent comprising an organic ester.