发明名称 |
Method of producing vacuum in the production of polymers |
摘要 |
A method is disclosed for producing a vacuum and for separating condensable components present in vapor which accumulates during the production of a polymer by melt-phase polycondensation under vacuum. Vapor produced during the production of polymers by melt-phase polycondensation in at least one reaction step under vacuum is drawn of by at least one steam jet vacuum pump with a down stream injection condenser. The steam jet vacuum pump is driven with alkylene carbonate in vapor form and liquid alkylene carbonate is then supplied to the injection condenser as coolant.
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申请公布号 |
US7317073(B2) |
申请公布日期 |
2008.01.08 |
申请号 |
US20050554436 |
申请日期 |
2005.10.24 |
申请人 |
LURGI ZIMMER GMBH |
发明人 |
KAEMPF RUDOLF |
分类号 |
C08F6/00;B01J3/00;C08G63/78;C08G64/20;C08G65/40;C08G75/23;C08G79/04;F04F5/54 |
主分类号 |
C08F6/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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