发明名称 |
Production of polyether-alcohol for making polyurethane foam, involves reacting a propoxylated starter in a tubular reactor supplied with alkylene oxide mixtures with increasing proportions of ethylene oxide |
摘要 |
<p>A method for making polyether-alcohols using DMC catalysts involves (1) reacting an H-functional starter with propylene oxide (PO) or a mixture of PO and ethylene oxide (EO) and then (2) transferring the mixture to a tubular reactor with at least 2 feed points (FP) for PO/EO mixtures constituted so that the mixtures added in stages 1 and 2 have different PO/EO ratios, there are different PO/EO ratios at different FPs and the mixture added in stage 2 (at least from the last FP) contains at least 40 wt% EO.</p> |
申请公布号 |
DE102005041142(A1) |
申请公布日期 |
2007.03.01 |
申请号 |
DE20051041142 |
申请日期 |
2005.08.30 |
申请人 |
BASF AG |
发明人 |
OSTROWSKI, THOMAS;LOEFFLER, ACHIM;RUPPEL, RAIMUND |
分类号 |
C08G65/28 |
主分类号 |
C08G65/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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