Method for reduction of aldehyde emission in polyurethane comprising materials

A reaction mixture for making a polyurethane material, said mixture comprising at least one isocyanate reactive compound, at least one polyisocyanate compound and at least one aldehyde scavenger compound of the general formula [I]:

• R1—NH—R2 [I]
• wherein
• R1 and R2 are independently of one another selected from —SO2R4, —C(O)R5, a pyridyl derivative, —CH═CHR3 or —CN,
• R3 is —SO2R4, —C(O)R5, a pyridyl derivative or —CN
• R4 is NH2, NHR6, NR7R8, OR9 or R10
• R5 is H, NH2, NHR6, NR7R8, OR9 or R10
• R6, R7, R8, R9, or R10 are independently of one another selected from a combination of linear, branched, saturated, unsaturated, cyclic and/or non-cyclic aliphatic hydrocarbons, araliphatic hydrocarbons, aromatic hydrocarbons and mixtures thereof, optionally comprising substituents selected from hydroxy, ether, halogen, carboxyl, isocyanate, nitro and/or amine groups,
• R1 and R2 may be linked to each other essentially forming a ring structure;
• and
• wherein the pyridyl derivative is bound on the 2, 3, 4 or 5 position to the NH of the R1-NH—R2 formula and the pyridyl derivative is substituted with an aliphatic hydrocarbon, an araliphatic hydrocarbon and/or an aromatic hydrocarbon.