Kao Corporation

Akio Mamba

Akira Yoshida

Naoki Kyochika

Shigeo Nakai

Kazuhiko Kiuchi

Hitoshi Funada

A binder resin composition, a curing agent composition, a caking additive composition, a kit, a casting mold composition and a process for manufacturing a casting mold are disclosed, wherein a metallic compound containing a metallic element belonging to Group IB to VIII of the Periodic Table is utilized. The compositions are useful for the production of a sand mold for casting, having an excellent strength, from reclaimed sand, in a self-hardening or gas hardening mold process. The casting mold according to the present invention, which is manufactured in the presence of a metallic compound containing a metallic element belonging to Group IB to VIII of the Perioidic Table has excellent strength.

Composition for mold

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.

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Aichi, Japan

Akio Mamba