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Process for transitioning reactors from base-catalyzed polyol production to DMC-catalyzed polyol production
Process for transitioning reactors from base-catalyzed polyol production to DMC-catalyzed polyol production
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机译:用于将反应器从碱催化的多元醇生产过渡到DMC催化的多元醇生产的方法
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摘要
A process for transitioning a reactor from base-catalyzed polyol production to double metal cyanide (DMC)-catalyzed polyol production is described. The process includes discharging a base-catalyzed and un-neutralized product mixture from a reactor, and adding an acidified polyether polyol starter and DMC catalyst mixture to the reactor. A DMC-catalyzed polyol production reaction can then be conducted in the reactor without intermediate washing or rinsing of the reactor, and without catalyst deactivation from base or alkaline hold-up.
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