发明名称 |
Method and Device For Producing Vacuum In the Production of Polyesters and Copolyesters |
摘要 |
The invention relates to a method and a device for producing vacuum in the production of polyesters and copolyesters; unrectified vapors from at least one esterification or transesterification stage is preferably used as a driving medium in gas jet pumps for producing the vacuum in one or more polycondensation stages.
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申请公布号 |
US2009105446(A1) |
申请公布日期 |
2009.04.23 |
申请号 |
US20080211524 |
申请日期 |
2008.09.16 |
申请人 |
REISEN MICHAEL;KRIESCHE GERALD |
发明人 |
REISEN MICHAEL;KRIESCHE GERALD |
分类号 |
C08G63/78;B01J19/00 |
主分类号 |
C08G63/78 |
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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