发明名称 |
METHOD FOR REGENERATING AN AUXILIARY FILTERING AGENT |
摘要 |
Processes comprising: (i) providing a filter aid comprising a co-extrudate of a water-insoluble polyvinylpyrrolidone and a thermoplastic polymer; (ii) treating the filter aid with aqueous alkali; (iii) subsequently treating the filter aid with an enzyme; and (iv) subsequently thereto carrying out a second treatment with aqueous alkali, to provide a regenerated filter aid, and uses therefor.
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申请公布号 |
US2009291164(A1) |
申请公布日期 |
2009.11.26 |
申请号 |
US20070443586 |
申请日期 |
2007.09.27 |
申请人 |
BASF SE |
发明人 |
MEFFERT HELMUT;PIEROBON MARIANNA;PETSCH TOBIAS;BRODERSEN JULIA;FEISE HERMANN JOSEF;ERK ATES;KRESS JORG;MAR RALF;BAYER ROBERT |
分类号 |
C12C7/165;B01D29/62;B01D37/02 |
主分类号 |
C12C7/165 |
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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