| 摘要 |
A process for preparing polyurethane foam which consists in introducing in the reaction, between a polyisocyanate and a polyol, a catalyst containing the chemical structure >N-C=N- and also a compound selected from the group comprising metal salts of carboxylic acids having the structure <IMAGE> M and metal alcoholates and/or phenolates having the structure M'OR', wherein M' represents an alkaline metal, M represents an alkaline or alkaline-earth metal, R represents hydrogen or an organic radical and R' represents an organic radical.
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