发明授权
- 专利标题： Process for separating and recovering residual monomers from aqueous suspensions of acrylonitrile polymers
- 专利标题（中）： 从丙烯腈聚合物的水悬浮液中分离和回收残留单体的方法
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申请号： US569932申请日： 1975-04-21
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公开(公告)号： US3980529A公开(公告)日： 1976-09-14
- 发明人: Gerd Wilhelm , Karl Hurm , Rolf-Burkhard Hirsch , Artur Jaschke , Herbert Marzolph
- 申请人： Gerd Wilhelm , Karl Hurm , Rolf-Burkhard Hirsch , Artur Jaschke , Herbert Marzolph
- 申请人地址： DT Leverkusen
- 专利权人： Bayer Aktiengesellschaft
- 当前专利权人： Bayer Aktiengesellschaft
- 当前专利权人地址： DT Leverkusen
- 优先权： DT2420471 19740427
- 主分类号： C08F6/00
- IPC分类号： C08F6/00 ; B01D1/00 ; C08F6/06 ; C08F6/16 ; B01D3/00 ; B01D1/22 ; C08F220/42
摘要：
The invention relates to a process for the recovery of acrylonitrile and other monomers from an aqueous polymer dispersion by continuous distillation in a thin-layer evaporator under reduced pressure, condensation of the evaporated monomers in a condenser under the same or similar reduced pressure and subsequent condensation or absorption respectively of the monomer vapors which have not been condensed in the condenser at a higher pressure.
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