发明申请
US20080269434A1 Recovering Ethylene and Vinyl Acetate from the Residual Gas Stream of Vinyl Ester-Ethylene Copolymer Preparation
失效
从乙烯酯 - 乙烯共聚物的残余气流中回收乙烯和乙酸乙烯酯制备
- 专利标题： Recovering Ethylene and Vinyl Acetate from the Residual Gas Stream of Vinyl Ester-Ethylene Copolymer Preparation
- 专利标题（中）： 从乙烯酯 - 乙烯共聚物的残余气流中回收乙烯和乙酸乙烯酯制备
-
申请号： US12158468申请日： 2006-12-14
-
公开(公告)号： US20080269434A1公开(公告)日： 2008-10-30
- 发明人: Mehmet Guenaltay , Manfred Selig
- 申请人： Mehmet Guenaltay , Manfred Selig
- 申请人地址： DE Munich
- 专利权人： WACKER CHEMIE AG
- 当前专利权人： WACKER CHEMIE AG
- 当前专利权人地址： DE Munich
- 优先权： DE102005061576.7 20051222
- 国际申请： PCT/EP2006/069717 WO 20061214
- 主分类号： C08F2/00
- IPC分类号： C08F2/00
摘要：
In a process for the preparation of copolymers containing vinyl esters and ethylene or ethylenically unsaturated monomers by aqueous, free radical polymerization at a pressure of from 5 to 100 bar absolute by the emulsion or suspension polymerization method, after the end of the polymerization, the reaction mixture is let down to a pressure of from 0.1 to 5 bar absolute and recovery of unconverted monomers is effected by multistage fractional low-temperature condensation from the residual gas.
公开/授权文献
信息查询
