CONTROLLED ADDITION OF LIGAND IN POLYOL SYNTHESIS

• Main Authors: CARAZO ANGULO, José Antonio, DUEÑAS DÍEZ, Marta, FRAGA TRILLO, Luisa María, BLANCO GONZÁLEZ, María Dolores, GARCÍA RUIZ, Mónica, MIRANDA LÓPEZ-MARÍN, Juan de Dios
• Format: Patent
• Language: English; French
• Published: 25.07.2024
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The present invention relates to a process for the alkali metal base-catalyzed preparation of polyols comprising oxyalkylene units, comprising the addition of a ligand for chelating said alkali metal over a total period of time t ≥ 5 min during the reaction time, to a polyol comprising oxyalkylene units, and to the use of said polyol. La présente invention concerne un procédé de préparation catalysée par une base de métal alcalin de polyols comprenant des unités oxyalkylène, consistant à additionner un ligand pour chélater ledit métal alcalin sur une période totale de temps t ≥ 5 min pendant le temps de réaction, à un polyol comprenant des unités oxyalkylène, ainsi que l'utilisation dudit polyol.