Composition with reduced aldehyde emission
This invention generally provides composition for making a polyurethane foam with reduced aldehyde emission and more specially to composition useful in means of transport such as interior part of cars, wherein composition is comprising: (a) a polyfunctional isocyanate; (b) an isocyanate reactive composition; and (c) a compound of the formula (I) or (II), wherein the compound (c) is present by weight percentage in the composition in an amount ranging from about 0.001 to about 10, preferably from about 0.01 to about 5, and more preferably from about 0.05 to about 2 based on the total weight of the composition. The compositions can reduce aldehyde emission, especially acetaldehyde emission in the PU foam and has no obvious influence on the mechanic properties of the foam.
1. A composition for making a polyurethane foam, said composition comprising at least:
(a) a polyfunctional isocyanate;
(b) an isocyanate reactive composition; and
(c) a compound of the formula:
wherein R1 is selected from hydrogen, hydroxyl, or an unsubstituted or substituted C 1 -C 17 alkyl, a C 2 -C 38 alkenyl, or aryl group,
R2 is selected from a bond or an unsubstituted or substituted phenylene or naphthylene,
A is an ion with a positive charge,
wherein the compound (c) is present by weight percentage in the composition in an amount ranging from about 0.001 to about 2 based on the total weight of the composition.
2. The composition of claim 1 , wherein the NCO index of the composition is in the range of from about 0.6 to about 1.5.
3. The composition of claim 1 , wherein the NCO index of the composition is in the range of from about 1.05 to about 10.
4. The composition of claim 1 , wherein the polyfunctional isocyanate is selected from a polymeric methylene diphenyl diisocyanate, a methylene diphenyl diisocyanate isomer mixture, or a mixture thereof.
5. The composition of claim 1 , wherein the isocyanate reactive composition is a polyfunctional polyol or a polyfunctional amine.
6. The composition of claim 1 , wherein A is an alkali metal cation, an alkaline earth metal cation, a transition metal cation, an ammonium, or a hydrogen ion.
7. The composition of claim 1 , wherein the composition further comprises at least one catalyst.
8. The composition of claim 7 , wherein the catalyst comprises an amine catalyst.
9. The composition of claim 1 , wherein the composition further comprises at least one blowing agent.
10. The composition of claim 1 , wherein the composition further comprises at least one chain extender.
11. A process for making the foam of claim 1 , comprising mixing at least components (a), (b) and (c) to form a mixture, and adding the mixture to component (a).
12. A process for making the foam of claim 1 , comprising mixing at least components (b) and (c) to form a mixture, and adding the mixture to component (a).
13. A method of using the composition of claim 1 , to form an interior part of means of transport.
14. The composition of claim 5 , wherein the isocyanate reactive composition is a polyether polyol.