发明名称 |
Continuous process for the production of sucrose based polyether polyols |
摘要 |
A continuous process for the formation of sucrose based polyols is disclosed. The process comprises the steps of continuously forming an aqueous sucrose solution which is continuously combined with a catalyst and an alkylene oxide and flowed through a first spiral reaction tube. The alkylene oxide substantially completely reacting with the aqueous sucrose solution occurs to form a pre-polymer reaction product in the first spiral reaction tube. The pre-polymer reaction product is continuously flowed from the first reaction tube and unreacted water from the pre-polymer reaction product is removed. The water stripped pre-polymer reaction product is continuously flowed through a second spiral reaction tube and additional alkylene oxide is continuously added to the second spiral reaction tube. The alkylene oxide reacts with the pre-polymer reaction product in the second spiral reaction tube to form a polyol. The polyol is flowed through additional spiral reaction tubes with addition of alkylene oxide and optionally additional catalyst to each of the additional spiral reaction tubes, thus forming a polyol.
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申请公布号 |
US6380367(B1) |
申请公布日期 |
2002.04.30 |
申请号 |
US19990443273 |
申请日期 |
1999.11.18 |
申请人 |
BASF CORPORATION |
发明人 |
HINZ WERNER;DEXHEIMER EDWARD MICHAEL |
分类号 |
B01J19/24;C08G65/26;(IPC1-7):C07H3/04;C07H15/08 |
主分类号 |
B01J19/24 |
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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