Process for lowering emissions of a polyurethane foam

Details Process for lowering emissions of a polyurethane foam Process for lowering emissions of a polyurethane foam

C - Chemistry, Metallurgy

08

G

C08G 18/08 (2006.01) C08G 18/38 (2006.01) C08G 18/40 (2006.01) C08G 18/65 (2006.01) C08G 18/72 (2006.01) C08J 9/12 (2006.01)

Patent

CA 2670190

The present invention provides a process for producing polyurethane foams from (A1) compounds with a molecular weight of 400 - 15,000 exhibiting hydrogen atoms that are reactive towards isocyanates, (A2) optionally, compounds with a molecular weight of 62 -- 399 exhibiting hydrogen atoms that are reactive towards isocyanates, (A3) water and/or physical blowing agents, (A4) optionally, auxiliary substances and additives, (A5) compounds with at least one carbonamide group and one nitrile group, and (B) diisocyanates or polyisocyanates, which results in polyurethane foams with lowered emission of formaldehyde and wherein the activity of the raw-material mixture is not significantly influenced and wherein the mechanical properties of the resulting foam (in particular, compression set and ageing behaviour under humid conditions) are not influenced negatively.

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