发明名称 |
METHOD FOR THE PRODUCTION OF POLYETHER POLYOLS COMPRISING TERMINAL PRIMARY HYDROXYL GROUPS |
摘要 |
The present invention relates to a process for producing polyether polyols having primary hydroxyl end groups, comprising the steps of reacting a starter compound containing active hydrogen atoms with an epoxide under double metal cyanide catalysis, reacting the resulting product with a cyclic carboxylic anhydride and reacting this resulting product with ethylene oxide in the presence of a catalyst containing at least one nitrogen atom per molecule, excluding non-cyclic, identically substituted tertiary amines. The invention further relates to polyether polyols obtainable by this process, compositions containing said polyols and polyurethane polymers based on said polyols. |
申请公布号 |
EP2448996(B1) |
申请公布日期 |
2013.08.28 |
申请号 |
EP20100729815 |
申请日期 |
2010.06.30 |
申请人 |
BAYER INTELLECTUAL PROPERTY GMBH |
发明人 |
NEFZGER, HARTMUT;BAUER, ERIKA;HOFMANN, JOERG;LORENZ, KLAUS;HAHN, NORBERT |
分类号 |
C08G65/26;C08G18/48;C08G65/332 |
主分类号 |
C08G65/26 |
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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