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Mold Organic Binder And Molding Sand Composition And Mold Obtained Using Same

PATENT

Mold Organic Binder And Molding Sand Composition And Mold Obtained Using Same

Provided is a mold organic binder that exhibits an excellent fast curing property and can shorten the molding time when a mold is manufactured through ordinary temperature curing.ã¿¿The mold organic binder used to mold a phenolic urethane-based gas-curing mold or a self-curing mold is formed using, as essential components, a phenol resin, an organic solvent, and a reaction product of i) a polyisocyanate compound and ii) a compound a having two or three intramolecular hydroxyl groups and/or carboxyl groups and having a number average molecular weight of 300-3000, the proportion of the compound a in relation to the polyisocyanate compound being 0.1-12.0 mass%.

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REST Client (Huachao Mao)