| 发明名称 |
METHOD FOR REGENERATING AN AUXILIARY FILTERING AGENT |
| 摘要 |
<p>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.</p> |
| 申请公布号 |
EP2077913(A1) |
申请公布日期 |
2009.07.15 |
| 申请号 |
EP20070820667 |
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, JOERG;MAR, RALF;BAYER, ROBERT |
| 分类号 |
B01J20/34;B01D37/02;B01D39/04;B01D41/02;B01J20/26;C12H1/056 |
主分类号 |
B01J20/34 |
| 代理机构 |
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代理人 |
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