Method for decreasing formaldehide emission

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PURPOSE : Provided is a method for inhibiting the emission of formaldehyde from materials emitting a large amount of formaldehyde, such as composite boards, furniture, building interior materials and wallpaper. CONSTITUTION : The method for inhibiting the emission of formaldehyde from materials emitting a large amount of formaldehyde, comprises adding an anion-emitting material in any one step during the manufacture of such formaldehyde-emitting materials. The anion-emitting material is at least one selected from the group consisting of rare earth metals including strontium, vanadium, zirconium, neodymium, lanthanum, barium, rubidium, cesium and gallium; ceramics including aluminum oxide, silicon oxide, titanium dioxide, magnesium oxide, calcium oxide, iron oxide and zirconium oxide; and tourmaline. © KIPO 2006