发明申请
- 专利标题: SINGLE-POT PROCESS FOR THE PRODUCTION OF POLYESTER-CO-CARBONATE POLYOLS
- 专利标题(中): 用于生产聚碳酸酯多元醇的单一工艺
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申请号: US14373955申请日: 2013-02-04
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公开(公告)号: US20150018512A1公开(公告)日: 2015-01-15
- 发明人: William H. Heath , Harpreet Singh , Amarnath Singh , Jorge Jimenez , Qiuyun Xu
- 申请人: Dow Global Technologies LLC
- 国际申请: PCT/US2013/024600 WO 20130204
- 主分类号: C08G64/30
- IPC分类号: C08G64/30
摘要:
Polyester-co-carbonate polyols and methods for producing the same are provided. The method comprises reacting one or more alcohols having an OH functionality of two or more with one or more organic diacids to form a reaction mixture, adding a first amount of dialkyl carbonate to the reaction mixture to remove water remaining from the reaction mixture by azeotropic drying, adding a transesterification catalyst to the dialkyl carbonate containing reaction mixture and adding a second amount of dialkyl carbonate to the catalyst containing reaction mixture.