Reaction mixture suitable for manufacturing of foam with reduced aldehyde emission
AssigneeHuntsman International LLC
InventorsBao Luan, Zuxia Rong, Yuefan Zhang, Lies Bonami, Joris Bosman
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Abstract
Disclosed is a reaction mixture for the manufacturing of a polyurethane foam, which mixture can be obtained by reacting a polyfunctional isocyanate with an isocyanate-reactive compound, in the presence of a scavenger and at least one catalyst; and curing such reaction mixture enables providing a foam with reduced aldehyde emissions particularly useful in means of transport, such as interior part of cars.
Claims14
A reaction mixture for the manufacturing of a polyurethane foam, the reaction mixture comprising a polyfunctional isocyanate, an isocyanate-reactive compound, a scavenger and at least one catalyst, wherein the scavenger comprises a compound of the following formula (I):
- wherein,
- R1 and R2 are independently of one another selected from —OR3, R4 or from the group consisting of hydroxy, ether, halogen, carbonyl, carboxyl, isocyanate, nitro and/or amine groups,
- R3 and R4 are independently of one another selected from a combination of saturated linear, saturated branched, cyclic and/or saturated non-cyclic carbon chains, saturated aliphatic hydrocarbons, araliphatic hydrocarbons, aromatic hydrocarbons and mixtures thereof, optionally interrupted by one or more oxygen atoms, nitrogen atoms and/or sulphur atoms, and optionally comprising any functional group selected from hydroxy, ether, halogen, carboxyl, isocyanate, nitro and/or amine groups,
- R1 and R2 may be linked to each other essentially forming at least one ring structure.
A process for the manufacturing of a polyurethane foam, comprising the following steps:
- (a) providing a reaction mixture comprising a polyfunctional isocyanate and an isocyanate-reactive compound;
- (b) adding a scavenger and at least one catalyst to said reaction mixture, then adding at least one blowing agent to the reaction mixture;
- wherein said scavenger comprises a compound of the following formula (I):
- wherein,
- R1 and R2 are independently of one another selected from —OR3, R4, or from the group consisting of hydroxy, ether, halogen, carbonyl, carboxyl, isocyanate, nitro and/or amine groups,
- R3 and R4 are independently of one another selected from a combination of saturated linear, saturated branched, cyclic and/or saturated non-cyclic carbon chains, saturated aliphatic hydrocarbons, araliphatic hydrocarbons, aromatic hydrocarbons and mixtures thereof, optionally interrupted by one or more oxygen atoms, nitrogen atoms and/or sulphur atoms, and optionally comprising any functional group selected from hydroxy, ether, halogen, carboxyl, isocyanate, nitro and/or amine groups,
- R1 and R2 may be linked to each other essentially forming at least one ring structure;
- and
- (c) curing said reaction mixture, which comprises at least the reaction product of said polyisocyanate and said isocyanate-reactive compound in the presence of said scavenger and said at least one catalyst, leading to the formation of a polyurethane foam.
Dependencies are inferred from the claim text.