Reduction of Aldehydes in Amine Catalysts

摘要

The present disclosure provides a method for reducing the aldehyde content in an amine catalyst by treating the amine catalyst with a treating agent selected from a cyclic urea substituted with at least one isocyanate reactive group, a free radical scavenger and a mixture thereof. The treated amine catalyst may then be used in the production of polyurethane materials which exhibit reduced aldehyde emissions.

主权项

1. A method for reducing the aldehyde content in an amine catalyst comprising (i) mixing an amine catalyst containing one or more aldehyde impurities and a treating agent selected from a cyclic urea substituted with at least one isocyanate reactive group, a free radical scavenger and a mixture thereof to form a catalyst mixture and (ii) subjecting the catalyst mixture to conditions such that the level of aldehyde impurities in the catalyst mixture are reduced.