Method for producing polyether carbonate polyols
The invention relates to a method for starting up a reactor for the continuous production of polyether carbonate polyols by adding alkylene oxides and carbon dioxide to H-functional starter substances in the presence of a DMC catalyst and/or a metal complex catalyst based on the metals cobalt and/or...
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Main Authors | , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
18.10.2022
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Subjects | |
Online Access | Get full text |
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Summary: | The invention relates to a method for starting up a reactor for the continuous production of polyether carbonate polyols by adding alkylene oxides and carbon dioxide to H-functional starter substances in the presence of a DMC catalyst and/or a metal complex catalyst based on the metals cobalt and/or zinc, in the process: (alpha) a partial amount of an H-functional starter substance and/or a suspension medium free of H functions is mixed in a reactor with a DMC catalyst and/or a metal complex catalyst based on metals zinc and/or cobalt, wherein the DMC catalyst and/or the metal complex catalyst has a concentration s in the mixture; and (gamma) after step (alpha), continuously metering an H-functional starter substance, an alkylene oxide and a DMC catalyst and/or a metal complex catalyst based on metals zinc and/or cobalt into the reactor in an addition process and continuously removing the resulting reaction mixture from the reactor in order to achieve a steady state, characterized in that in step (alpha), in |
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Bibliography: | Application Number: CN202180021825 |