发明名称 |
POLYETHER PREPARATION METHOD |
摘要 |
To provide a process for producing a polyether, which comprises subjecting an alkylene oxide and the like to ring-opening addition polymerization to an initiator in the presence of a double metal cyanide complex catalyst (DMC catalyst), which can be carried out by use of a DMC catalyst at a low concentration, and accordingly the amount of the DMC catalyst remaining in a polyether to be obtained can be reduced. A process for producing a polyether, which comprises subjecting an alkylene oxide and an oxygen-containing heterocyclic compound other than an alkylene oxide, to ring-opening addition polymerization to an initiator having a hydroxy group in the presence of a DMC catalyst, wherein prior to the ring-opening addition polymerization, the DMC catalyst and the initiator are subjected to mixing treatment at a temperature of from 125°C to 180°C under an absolute pressure of at most 0.06 MPa for from 10 minutes to 24 hours. |
申请公布号 |
EP2471837(B1) |
申请公布日期 |
2015.01.14 |
申请号 |
EP20100817143 |
申请日期 |
2010.09.13 |
申请人 |
ASAHI GLASS COMPANY, LIMITED |
发明人 |
ARAI, TAKEAKI;SUZUKI, CHITOSHI |
分类号 |
C08G65/28;C08G18/48;C08G63/664;C08G65/00 |
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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