发明授权
US07345187B2 Method and apparatus for preparing a dialkyl carbonate, and its use in the preparation of diaryl carbonates and polycarbonates
有权
制备碳酸二烷基酯的方法和装置及其在制备碳酸二芳基酯和聚碳酸酯中的用途
- 专利标题： Method and apparatus for preparing a dialkyl carbonate, and its use in the preparation of diaryl carbonates and polycarbonates
- 专利标题（中）： 制备碳酸二烷基酯的方法和装置及其在制备碳酸二芳基酯和聚碳酸酯中的用途
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申请号： US09682286申请日： 2001-08-14
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公开(公告)号： US07345187B2公开(公告)日： 2008-03-18
- 发明人: Eugene Pauling Boden , Ganesh Kailasam , Larry Neil Lewis , Alberto Nisoli , John Yaw Ofori , Angel Sanchez Gonzalez
- 申请人： Eugene Pauling Boden , Ganesh Kailasam , Larry Neil Lewis , Alberto Nisoli , John Yaw Ofori , Angel Sanchez Gonzalez
- 申请人地址： US NY Schenectady
- 专利权人： General Electric Company
- 当前专利权人： General Electric Company
- 当前专利权人地址： US NY Schenectady
- 主分类号： C07C69/96
- IPC分类号： C07C69/96
摘要：
Unexpected corrosion of downstream sections of a dialkyl carbonate manufacturing apparatus has been traced to alkyl chloroformate impurities, which slowly decompose to yield hydrochloric acid. An improved process and apparatus for dialkyl carbonate synthesis reduce corrosion by physically removing or chemically decomposing the alkyl chloroformate impurities within the corrosion-resistant upstream sections of the apparatus.