Title:
FILTER MEDIUM
Document Type and Number:
WIPO Patent Application WO/2021/193137
Kind Code:
A1
Abstract:
The present invention addresses a problem associated with conventional filter media that utilize activated carbon, i.e. the problem of improving the performance to deodorize polar gases such as ammonia and aldehydes. Specifically, the present invention addresses the problem of providing a high-performance adsorbent which utilizes chemical adsorption instead of physical adsorption, and which is not susceptible to desorption of a bad odor component that has adsorbed thereto. The present invention is characterized by: comprising at least two nonwoven fabrics stacked upon each other; and containing an acidic cation exchange resin and an inorganic porous body that supports at least an acid hydrazide in at least one space between the stacked nonwoven fabrics.
Inventors:
HAYASHI TOSHIKI (JP)
ASADA YASUHIRO (JP)
MIYOSHI KENGO (JP)
ASADA YASUHIRO (JP)
MIYOSHI KENGO (JP)
Application Number:
PCT/JP2021/010024
Publication Date:
September 30, 2021
Filing Date:
March 12, 2021
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B01D39/14; A61L9/01; B01D39/16; B01J20/20; B01J20/22; B01J20/26; B01J20/28; B32B5/30
Domestic Patent References:
| WO2019189638A1 | 2019-10-03 | |||
| WO2018116858A1 | 2018-06-28 |
Foreign References:
| JP2017079754A | 2017-05-18 | |||
| JP3169785U | 2011-08-18 | |||
| JP2011116194A | 2011-06-16 |
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