Production of rigid polyurethane foams

Details Production of rigid polyurethane foams Production of rigid polyurethane foams

C - Chemistry, Metallurgy

08

G

C08G 18/28 (2006.01) C08G 18/48 (2006.01) C08G 18/83 (2006.01) C08J 9/04 (2006.01) C08J 11/24 (2006.01)

Patent

CA 2233366

In a process for producing rigid polyurethane foams by reacting a) polyisocyanates b) compounds containing at least two hydrogen atoms capable of reacting with isocyanate groups, in the presence of c) catalysts, d) blowing agents and, if desired, e) further auxiliaries and/or additives, the component b) comprises at least one recycled polyol which is formed by glycolysis of polyurethanes.

Dans un processus de production de mousses de polyuréthanne rigide par réaction a) de polyisocyanates, b) de composés contenant au moins deux atomes d'hydrogène capables de réagir avec des groupements isocyanates, en présence c) de catalyseurs, d) d'agents d'expansion et, si désiré, e) d'autres auxiliaires et/ou additifs, le composant b) comprend au moins un polyol recyclé qui est formé par glycolyse de polyuréthanne.

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