Abstract: The present invention relates to a catalyst for reductive amination-reaction, and uses thereof. The catalyst according to the present invention can show high amine conversion rate because it can maintain the catalytic activity even in the presence of moisture especially while maintaining the balance of dehydrogenation and hydrogenation reaction basically. Accordingly, the catalyst can be usefully used for preparing a polyetheramine compound through reductive amination-reaction not only in a continuous preparation process but also in a batch preparation process, irrespective of the existence of moisture.

Abstract: The present invention relates to a catalyst for reductive amination-reaction, and uses thereof. The catalyst according to the present invention can show high amine conversion rate because it can maintain the catalytic activity even in the presence of moisture especially while maintaining the balance of dehydrogenation and hydrogenation reaction basically. Accordingly, the catalyst can be usefully used for preparing a polyetheramine compound through reductive amination-reaction not only in a continuous preparation process but also in a batch preparation process, irrespective of the existence of moisture.

Abstract: Disclosed herein are a spalling-preventing composite material composed of fiber and powder, which have different diameters and melting points so as to be capable of realizing the effect of preventing spalling of high-strength concrete and the effect of improving the fluidity of concrete, and a high-strength refractory concrete comprising the spalling-preventing material. The composite material for preventing spalling of high-strength concrete is composed of powder and fiber at 1:1-3, wherein the powder is a polymer powder having a diameter of 0.10-0.5 mm and a melting point of 110-150° C., and the fiber is a conjugate fiber including a first fiber having a diameter of 0.05-0.10 mm, a length of 5-25 mm and a melting point of 150-190° C., and a second fiber having a diameter of 0.01-0.05 mm, a length of 5-25 mm and a melting point of 190-250° C., the first fiber being a polypropylene fiber, and the second fiber being a nylon fiber or a polyvinyl alcohol fiber.