Wiedergewinnung von Doppelmetallcyanidkomplexkatalysatoren aus Polymeren
摘要
A process for recovering double metal cyanide complex catalyst from a polymer such as polypropylene glycol in a form suitable for use as a polymerization catalyst comprises the steps of (a) combining the polymer with a non-polar solvent to precipitate the catalyst and (b) filtering the resulting mixture in the presence of a filter aid to separate the polymer from the precipitated catalyst. In contrast to the prior art methods of catalyst removal, the process of the invention yields polymer uniformly low in color as well as recovered catalyst which may be reused in subsequent polymerizations.
申请公布号
DE69030776(T2)
申请公布日期
1997.09.11
申请号
DE1990630776T
申请日期
1990.02.16
申请人
ARCO CHEMICAL TECHNOLOGY, L.P., GREENVILLE, DEL., US
发明人
SCHUCHARDT, JONATHAN L., EXTON, PENNSYLVANIA 19341, US