A process for reducing the level of metal ions and/or metal compounds in a polyoxyalkylene monool or polyol having a number average molecular weight of above 500-25000 by bringing the monool or polyol into contact with an extracting compound which is a polyol or a polyol mixture having a number average molecular weight of at most 500 and being immiscible with the polyoxyalkylene monool or polyol, mixing the extracting compound and the polyoxyalkylene monool or polyol, allowing the extracting compound and the polyoxyalkylene monool or polyol to separate and removing the extracting compound.
申请公布号
DE69407622(T2)
申请公布日期
1998.04.23
申请号
DE1994607622T
申请日期
1994.11.17
申请人
IMPERIAL CHEMICAL INDUSTRIES PLC, LONDON, GB
发明人
GOEGEBEUR, PATRICK, MARGRIET, GASTON, B-8210 ZEDELGEM, BE