发明申请
- 专利标题： Method of producing vacuum in the production of polymers
- 专利标题（中）： 在聚合物生产中生产真空的方法
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申请号： US10554436申请日： 2004-03-31
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公开(公告)号： US20060247412A1公开(公告)日： 2006-11-02
- 发明人: Rudolf Kampf
- 申请人： Rudolf Kampf
- 优先权： DE10318747.2 20030425
- 国际申请： PCT/EP04/03389 WO 20040331
- 主分类号： C08G64/00
- IPC分类号： C08G64/00 ; C08G16/00
摘要：
The invention relates to a method for the production of polymers by means of melt-phase polycondensation in at least one reaction step under vacuum. The vapor produced is drawn off by at least one steam jet vacuum pump with a downstream injection condenser from the reaction step. In order to improve the method, the steam jet vacuum pump is driven with alkylene carbonate in vapor form and liquid alkylene carbonate is supplied to the injection condenser as coolant.
公开/授权文献
- US07317073B2 Method of producing vacuum in the production of polymers 公开/授权日：2008-01-08