INTEGRATED METHOD FOR THE PRODUCTION OF POLYURETHANE FOAMS

摘要

The present invention relates to an integrated process for the preparation of a polyurethane, comprising at least the following steps: (1) epoxidation of propene with at least one hydroperoxide to give propylene oxide; (2) reaction of the propylene oxide from step (1) or a mixture of the propylene oxide from step (1) and at least one further alkylene oxide to give a polyether alcohol using at least one multimetal cyanide compound as a catalyst; (3) reaction of a polyether alcohol from step (2) with at least one isocyanate; and polyurethanes which can be prepared by a novel process and moldings which contain a novel polyurethane.