processo para a preparação em batelada ou em semibatelada de um poliol polimérico, e processo para preparar uma espuma de poliuretano

processo para a preparação em batelada ou em semibatelada de um poliol polimérico, e processo para preparar uma espuma de poliuretano

The invention relates to a process for the batch or semi-batch preparation of a polymer polyol, which process comprises mixing a base polyol, one or more ethylenically unsaturated monomers, a polymerization initiator, optionally a macromer, and optionally a chain transfer agent, and polymerizing the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Paulus Jacobus Fennis, RONNY DE RIDDER, JEROEN PATRICK MICHEL BOUWMAN
Format: Patent
Sprache:por
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:The invention relates to a process for the batch or semi-batch preparation of a polymer polyol, which process comprises mixing a base polyol, one or more ethylenically unsaturated monomers, a polymerization initiator, optionally a macromer, and optionally a chain transfer agent, and polymerizing the mixture thus obtained at a temperature of 50 to 200° C., wherein one or more of the compounds to be mixed are fed while having a temperature that is higher than ambient temperature.