- 专利标题： PURIFICATION PROCESS FOR POLYETHER-CARBONATE POLYOLS
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申请号： US17424259申请日： 2020-01-06
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公开(公告)号： US20220089813A1公开(公告)日： 2022-03-24
- 发明人: Marinus A. Bigi , Nima Nikbin
- 申请人： Dow Global Technologies LLC
- 申请人地址： US MI Midland
- 专利权人： Dow Global Technologies LLC
- 当前专利权人： Dow Global Technologies LLC
- 当前专利权人地址： US MI Midland
- 国际申请： PCT/US2020/012339 WO 20200106
- 主分类号： C08G64/40
- IPC分类号： C08G64/40 ; C08G64/02 ; C08G64/30 ; B01J20/26 ; B01J20/18
摘要：
Alkylene carbonates are removed from polyether-carbonate polymers by contacting the polyether-carbonate with an absorbent at a temperature of 30 to 150° C. The process is effective and inexpensive. The purified polyether-carbonate is useful for making polyurethanes as well as in many other applications.