Process for the preparation of highly elastic polyurethane...

Details Process for the preparation of highly elastic polyurethane... Process for the preparation of highly elastic polyurethane...

C - Chemistry, Metallurgy

08

G

C08G 18/48 (2006.01) C08G 18/66 (2006.01) C08J 9/06 (2006.01)

Patent

CA 2048276

The invention relates to a process for preparing highly elastic polyurethane flexible foams by the reaction of (a) polyisocyanates with (b) polyethers having a molecular weight of from 400 to 10,000 and containing at least two isocyanate-reactive hydrogen atoms, in the presence of (c) water and (d) mixtures of crosslinking agents having a molecular weight of from 32 to 399 and containing at least two isocyanate- reactive hydrogen atoms, wherein said mixtures contain (I) alkanolamines and (II) amine-free polyols, with the proviso that components (c) and (d) must be used together as an aqueous solution.

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