Title:
FILTER MATERIAL FOR AIR FILTER AND METHOD FOR PRODUCING FILTER MATERIAL
Document Type and Number:
WIPO Patent Application WO/2023/058102
Kind Code:
A1
Abstract:
The present disclosure addresses the problem of providing a filter material for an air filter that does not contain PFAS or siloxane compounds and has an excellent physical property balance of PF value, water repellency, and strength. The filter material for an air filter according to the present disclosure is composed of a wet non-woven fabric, the filter material being characterized by containing a binder resin and a water repellent, the water repellent being mainly composed of a hydrocarbon-based polymer that does not contain fluorine or silicon in the molecule, and the binder resin and the water repellent agent being crosslinked by an isocyanate crosslinking component.
Inventors:
TASHIRO NOZOMI (JP)
SATO MASASHI (JP)
SATO MASASHI (JP)
Application Number:
PCT/JP2021/036709
Publication Date:
April 13, 2023
Filing Date:
October 04, 2021
Export Citation:
Assignee:
HOKUETSU CORP (JP)
International Classes:
B01D39/20; B01D46/10; D06M13/02
Foreign References:
| JPH09225226A | 1997-09-02 | |||
| JP2001162122A | 2001-06-19 | |||
| JP2004154672A | 2004-06-03 | |||
| JP2007029916A | 2007-02-08 | |||
| JP2010094580A | 2010-04-30 | |||
| JP2017060932A | 2017-03-30 | |||
| JP2011240311A | 2011-12-01 |
Attorney, Agent or Firm:
IMASHITA, Katsuhiro et al. (JP)
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