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1. US20220204691 - PROCESS FOR THE CONTINUOUS PRODUCTION OF POLYOXYALKYLENE POLYOLS

Office
États-Unis d'Amérique
Numéro de la demande 17612071
Date de la demande 29.05.2020
Numéro de publication 20220204691
Date de publication 30.06.2022
Type de publication A1
CIB
C08G 65/26
CCHIMIE; MÉTALLURGIE
08COMPOSÉS MACROMOLÉCULAIRES ORGANIQUES; LEUR PRÉPARATION OU LEUR MISE EN UVRE CHIMIQUE; COMPOSITIONS À BASE DE COMPOSÉS MACROMOLÉCULAIRES
GCOMPOSÉS MACROMOLÉCULAIRES OBTENUS PAR DES RÉACTIONS AUTRES QUE CELLES FAISANT INTERVENIR UNIQUEMENT DES LIAISONS NON SATURÉES CARBONE-CARBONE
65Composés macromoléculaires obtenus par des réactions créant une liaison éther dans la chaîne principale de la macromolécule
02à partir d'éthers cycliques par ouverture d'un hétérocycle
26à partir d'éthers cycliques et d'autres composés
CPC
C08G 65/2663
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
65Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
02from cyclic ethers by opening of the heterocyclic ring
26from cyclic ethers and other compounds
2642characterised by the catalyst used
2645Metals or compounds thereof, e.g. salts
2663Metal cyanide catalysts, i.e. DMC's
C08G 65/2609
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
65Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
02from cyclic ethers by opening of the heterocyclic ring
26from cyclic ethers and other compounds
2603the other compounds containing oxygen
2606containing hydroxyl groups
2609containing aliphatic hydroxyl groups
Déposants Covestro Intellectual Property GmbH & Co. KG
Inventeurs Joerg Hofmann
Thorsten Schmitz
Philipp Sander
Marcus Eichmann
Données relatives à la priorité 19178310 05.06.2019 EP
Titre
(EN) PROCESS FOR THE CONTINUOUS PRODUCTION OF POLYOXYALKYLENE POLYOLS
Abrégé
(EN)

The invention relates to a process for producing a polyoxyalkylene polyol, comprising depositing an alkylene oxide onto an H-functional starter substance in the presence of a double metal cyanide (DMC) catalyst, wherein the alkylene oxide is dosed at the mass flow rate m(alkylene oxide), the H-functional starter substance is dosed at the mass flow rate m(starter substance), and the double metal cyanide (DMC) catalyst is dosed in a dispersant at the mass flow rate m(DMC) continuously into the reactor with the reaction volume V during the reaction, and the resulting reaction mixture is continuously removed from the reactor, and wherein the quotient of the sum of the mass flow rates Σ{dot over (m)} of {dot over (m)}(alkylene oxide), {dot over (m)}(starter substance) and {dot over (m)}(DMC) to give the reaction volume V in the steady state is greater than or equal to 1200 g/(h·L).


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