发明名称 |
METHOD FOR THE PRODUCTION OF POLYETHER POLYOLS COMPRISING TERMINAL PRIMARY HYDROXYL GROUPS. |
摘要 |
<p>The invention relates to a method for producing polyether polyols comprising terminal primary hydroxyl groups. Said method includes the steps of reacting a starter compound containing active hydrogen atoms with an epoxide using double metal cyanide catalysis, reacting the obtained product with a cyclic carboxylic acid anhydride, and reacting said obtained product with ethylene oxide in the presence of a catalyst containing at least one nitrogen atom per molecule, with the exclusion of non-cyclic, identically substituted tertiary amines. The invention further relates to polyether polyols obtained using said method, compositions containing said polyols, and polyurethane polymers based on said polyols.</p> |
申请公布号 |
MX2011013699(A) |
申请公布日期 |
2012.02.22 |
申请号 |
MX20110013699 |
申请日期 |
2010.06.30 |
申请人 |
BAYER MATERIALSCIENCE AG |
发明人 |
HOFMANN, JOERG;HAHN, NORBERT;LORENZ, KLAUS;BAUER, ERIKA;NEFZGER, HARTMUT |
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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