Nitrogen-containing compounds suitable for use in the production of polyurethanes
AssigneeEvonik Operations GmbH
InventorsThomas Günther, Michael Fiedel, Olga Fiedel, Martin Glos, Roland Hubel
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Abstract
The present invention provides for the use of nitrogen compounds of formula (I) and/or of corresponding quaternized and/or protonated compounds for production of polyurethanes, compositions containing these compounds and polyurethane systems, especially polyurethane foams, which have been obtained using the compounds.
Claims13
A process for making a polyurethane comprising (1) mixing in a reaction mixture of a polyisocyanate and a polyol a proportion by mass of from 0.01 to 20 parts (pphp), based on 100 parts (pphp) of polyol component of at least one nitrogen compound, or mixtures of the nitrogen compound with corresponding quaternized and/or protonated compounds, wherein this nitrogen compound satisfies formula (VI),
- with n=2-12 except for 4, and (2) a pyrrolidine group selected from the group consisting of 1-(2-hydroxyethyl)pyrrolidine, 1-(2-chloroethyl)pyrrolidine, and 1-(2-(pyrrolidin-1-yl)propoxy)propan-2-ol.
A process for making a polyurethane comprising (1) mixing in a reaction mixture of a polyisocyanate and a polyol a proportion by mass of from 0.01 to 20 parts (pphp), based on 100 parts (pphp) of polyol component, of at least one nitrogen compound, or mixtures of the nitrogen compound with corresponding quaternized and/or protonated compounds, wherein this nitrogen compound satisfies formula (VI),
- with n=2-12 except for 4, and
- (2) a pyrrolidine group and diethylene glycol, wherein the pyrrolidine group is a reaction product of pyrrolidine with alkyl halides, a reaction product of pyrrolidine with bischloroalkyl ethers, a reaction product of pyrrolidine with epoxides or epoxide-bearing compounds, or a reaction product of pyrrolidine with alcohols and/or polyols.
Dependencies are inferred from the claim text.