首页>
外国专利>
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
展开▼
机译:从碱催化多元醇生产到DMC催化多元醇生产的过渡反应器过程
展开▼
页面导航
摘要
著录项
相似文献
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.
展开▼