发明申请
US20130228529A1 MICROPOROUS MATERIAL HAVING FILTRATION AND ADSORPTION PROPERTIES AND THEIR USE IN FLUID PURIFICATION PROCESSES
审中-公开
具有过滤和吸附特性的微孔材料及其在流体净化过程中的应用
- 专利标题： MICROPOROUS MATERIAL HAVING FILTRATION AND ADSORPTION PROPERTIES AND THEIR USE IN FLUID PURIFICATION PROCESSES
- 专利标题（中）： 具有过滤和吸附特性的微孔材料及其在流体净化过程中的应用
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申请号： US13599221申请日： 2012-08-30
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公开(公告)号： US20130228529A1公开(公告)日： 2013-09-05
- 发明人: Qunhui Guo , Carol L. Knox , Raphael O. Kollah , Justin J. Martin , Timothy A. Okel , Daniel E. Rardon , Christine Gardner , Shantilal M. Mohnot
- 申请人： Qunhui Guo , Carol L. Knox , Raphael O. Kollah , Justin J. Martin , Timothy A. Okel , Daniel E. Rardon , Christine Gardner , Shantilal M. Mohnot
- 申请人地址： US OH Cleveland
- 专利权人： PPG Industries Ohio, Inc.
- 当前专利权人： PPG Industries Ohio, Inc.
- 当前专利权人地址： US OH Cleveland
- 主分类号： B01D71/26
- IPC分类号： B01D71/26 ; B01D61/14 ; B01D53/22 ; B01D67/00
摘要：
The present invention is directed to microfiltration membranes comprising a microporous material, said microporous material comprising: (a) a polyolefin matrix present in an amount of at least 2 percent by weight, (b) finely divided, particulate, substantially water-insoluble silica filler distributed throughout said matrix, said filler constituting from about 10 percent to about 90 percent by weight of said microporous material substrate, wherein the weight ratio of filler to polyolefin is greater than 4:1; and (c) at least 35 percent by volume of a network of interconnecting pores communicating throughout the microporous material. The present invention is also directed to methods of separating suspended or dissolved materials from a fluid stream such as a liquid or gaseous stream, comprising passing the fluid stream through the microfiltration membrane described above.