Production of polyurethane systems
AssigneeEvonik Operations GmbH
InventorsEva Emmrich-Smolczyk, Mladen Vidakovic, Kai-Oliver Feldmann, Annegret Terheiden
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Abstract
The invention provides a process for production of polyurethane systems by reacting at least one polyol component with at least one isocyanate component in the presence of one or more catalysts for the isocyanate-polyol and/or isocyanate-water reactions and/or the trimerization of isocyanate, wherein said reacting is carried out in the presence of carrier material and polyamine P.
Claims11
A process for production of polyurethane systems comprising;
- reacting a polyol component and optionally water with an isocyanate component in the presence of one or more catalysts for reaction of the isocyanate component and the polyol component, for reaction of the isocyanate component and water, and/or
- trimerization of the isocyanate component,
- wherein said reacting is carried out in the presence of a mass fraction of in total from 0.01 to 10 parts by weight of a carrier material and a polyamine P based on 100 parts by weight of the polyol component, wherein the polyamine P is a reaction product of an unsaturated nitrile and an aliphatic polyamine selected from the group consisting of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, hexaethyleneheptamine and hexamethylenediamine.
A process for reducing aldehyde emission from polyurethane systems comprising admixing to the polyurethane systems a carrier material and a polyamine P wherein the polyamine P is a reaction product of an unsaturated nitrile and an aliphatic polyamine selected from the group consisting of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, hexaethyleneheptamine and hexamethylenediamine, in an amount of from 0.001 to 10 wt %, based on the overall weight of the polyurethane system, wherein the admixing takes place before and/or during the production of the polyurethane system.
A process for reducing aldehyde emission comprising formaldehyde, acetaldehyde, acrolein and benzaldehyde, from polyurethane foam systems comprising admixing to the polyurethane foam systems a carrier material and a polyamine P wherein the polyamine P is a reaction product of an unsaturated nitrile and an aliphatic polyamine selected from the group consisting of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, hexaethyleneheptamine and hexamethylenediamine, in an amount of from 0.01 to 5 wt %, based on the overall weight of the polyurethane foam system, wherein the admixing may take place before and/or during the production of the polyurethane foam system.
Dependencies are inferred from the claim text.