C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 263/16 (2006.01) C07C 263/10 (2006.01) C07C 263/20 (2006.01) C07C 265/14 (2006.01) C08G 18/76 (2006.01)
Patent
CA 2209139
In a process for preparing solutions containing at least one isocyanate, the above-defined solution is subjected to a treatment with hydrogen after the phosgenation and before the complete removal of the solvent and of residual phosgene. A process for preparing isocyanates or isocyanate mixtures is provided, and the isocyanates thus prepared can be used for preparing polyurethanes, in particular polyurethane foams.
Dans un procédé de préparation de solutions contenant au moins un isocyanate, la solution définie précédemment est soumise à un traitement avec de l'hydrogène après un traitement au phosgène et avant l'élimination complète du solvant et du phosgène résiduel. On dévoile un procédé de préparation d'isocyanates ou de mélanges d'isocyanates, et les isocyanates ainsi préparés peuvent être utilisés pour préparer des polyuréthannes, en particulier des mousses de polyuréthanne.
Bruchmann Bernd
Kraus Rupert
Nevejans Filip
Seyfert Wilfried
Tesch Helmut
Basf Aktiengesellschaft
Bruchmann Bernd
Kraus Rupert
Nevejans Filip
Robic
LandOfFree
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