METHOD FOR PRODUCING SHORT-CHAIN POLYFUNCTIONAL POLYETHER POLYOLS UTILIZING SUPERACID AND DOUBLE-METAL CYANIDE CATALYSIS
摘要
<p>A two stage alkoxlyation process for preparing a short-chain polyether polyol from a starter compound comprising from 3 to 9 hydroxyl groups and at least one alkylene oxide, wherein said starter compound has a hydroxy equivalent weight of from 22 to 90 Da. Said process comprises a first stage alkoxlyation using a superacid catalyst to prepare an oligomeric alkoxylated starter compound that is further alkoxylated to the short-chain polyether polyol of the invention in a second stage using a DMC catalyst. The process of the present invention may be performed continuously, in a batch, or semi-batch process.</p>
申请公布号
SG193502(A1)
申请公布日期
2013.10.30
申请号
SG20130069901
申请日期
2012.03.19
申请人
DOW GLOBAL TECHNOLOGIES LLC
发明人
SHUTOV, PAVEL, L.;VAN DER WAL, HANNO, R.;MASY, JEAN-PAUL;BABB, DAVID, A.