发明公开
EP1419130A1 METHOD FOR PREPARING A DIALKYL CARBONATE, AND ITS USE IN THE PREPARATION OF DIARYL CARBONATES AND POLYCARBONATES
审中-公开
制备二烷基碳酸酯的方法及其在制备二芳基碳酸酯和聚碳酸酯中的用途
- 专利标题： METHOD FOR PREPARING A DIALKYL CARBONATE, AND ITS USE IN THE PREPARATION OF DIARYL CARBONATES AND POLYCARBONATES
- 专利标题（中）： 制备二烷基碳酸酯的方法及其在制备二芳基碳酸酯和聚碳酸酯中的用途
-
申请号： EP02756804.7申请日： 2002-07-29
-
公开(公告)号： EP1419130A1公开(公告)日： 2004-05-19
- 发明人: BODEN, Eugene, Pauling , KAILASAM, Ganesh , LEWIS, Larry, Neil , VIC FERNANDEZ, Ignacio
- 申请人： GENERAL ELECTRIC COMPANY
- 申请人地址： 1 River Road Schenectady, NY 12345 US
- 专利权人： GENERAL ELECTRIC COMPANY
- 当前专利权人： GENERAL ELECTRIC COMPANY
- 当前专利权人地址： 1 River Road Schenectady, NY 12345 US
- 代理机构： Szary, Anne C.
- 优先权： US682285 20010814
- 国际公布： WO2003016256 20030227
- 主分类号： C07C68/00
- IPC分类号： C07C68/00 ; C07C68/08 ; 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.
信息查询
