- 专利标题： Polyester polyols with long-chain polyether polyol building blocks and use thereof in rigid pur/pir foams
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申请号： US14782857申请日： 2014-04-08
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公开(公告)号： US09701805B2公开(公告)日： 2017-07-11
- 发明人: Hartmut Nefzger , Uwe Kuenzel , Lutz Brassat
- 申请人： BAYER MATERIALSCIENCE AG
- 申请人地址： DE Leverkusen
- 专利权人： Covestro Deutschland AG
- 当前专利权人： Covestro Deutschland AG
- 当前专利权人地址： DE Leverkusen
- 代理商 Donald R. Palladino
- 优先权： EP13163407 20130411
- 国际申请： PCT/EP2014/056976 WO 20140408
- 国际公布： WO2014/166898 WO 20141016
- 主分类号： C08G18/42
- IPC分类号： C08G18/42 ; C08G63/672 ; C08J9/14 ; C08G18/76 ; C08G18/09 ; C08G18/40 ; C08G101/00
摘要：
The invention relates to a polyester polyol which contains building units which are derived from ethylene glycol and/or diethylene glycol and which is characterized in that the polyester polyol furthermore comprises building units which are derived from at least one long-chain polyester polyol with a number-average molar mass of 1500 to 8000 Da. The invention further relates to a process for the production thereof and use thereof, in particular for the production of rigid PUR/PIR foams.
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