专利名称：Method for manufacturing polyether
polyols
发明人：MUELLER, THOMAS, ERNST DR.,GUERTLER,
CHRISTOPH DR.,WOHAK, MATTHIASDR.,HOFMANN, JOERG DR.,SUBHANI, AFZALDR.,COSEMANS, MAURICE,LEITNER, WALTERPROF. DR.
申请号：EP11174412.4申请日：20110718公开号：EP2548907A1公开日：20130123
摘要：Producing polyether carbonate polyol from at least one hydrogen-functionalstarter compound, at least one alkylene oxide, and carbon dioxide in presence of adouble metal cyanide (DMC) catalyst, comprises (a) providing the hydrogen-functionalstarter compound or a mixture of at least two hydrogen-functional starter compounds,(b) adding a partial amount of at least one alkylene oxide to the product mixtureresulting from step (a), for activating, and (c) continuously adding at least one alkyleneoxide and carbon dioxide to the product mixture resulting from step (b). Producingpolyether carbonate polyol from at least one hydrogen-functional starter compound, atleast one alkylene oxide, and carbon dioxide in presence of a double metal cyanide (DMC)catalyst, comprises (a) providing the hydrogen-functional starter compound or a mixtureof at least two hydrogen-functional starter compounds, (b) adding a partial amount of atleast one alkylene oxide (based on the total amount of alkylene oxide used in the steps
(b) and (c)) to the product mixture resulting from step (a), for activating, where the step(b) is carried out repeatedly for activating, and (c) continuously adding at least onealkylene oxide and carbon dioxide to the product mixture resulting from step (b), wherethe alkylene oxide used for copolymerizing is same or different from the alkylene oxideused in step (b). In step (c) the carbon dioxide is introduced into the mixture by (i)aerating the reaction mixture in the reactor from the bottom, (ii) using a hollow-shaftstirrer, (iii) combining (i) and (ii), and/or (iv) gassing the liquid surface using multistagestirring elements.
申请人：BAYER MATERIALSCIENCE AG
地址：Kaiser-Wilhelm-Allee 60 51373 Leverkusen DE
国籍：DE
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