Deodorizing filter

Patent metadata

Field	Value
Publication number	US-2016256583-A1
Application number	US-201415028858-A
Country	US
Kind code	A1
Filing date	Aug 28, 2014
Priority date	Oct 17, 2013
Publication date	Sep 8, 2016
Grant date	—

Abstract

The deodorizing filter 1 of the present invention is provided with a deodorizing fiber layer 10 which contains a fiber 11 and a chemical adsorption type deodorant 13 bonded to a surface of the fiber 11, and a thickness of the deodorizing fiber layer 10 is 0.3 mm or more, a basis weight of the deodorizing fiber layer 10 is in a range from 30 to 100 g/m 2 , and a permeability measured by fragile form method is in a range from 50 to 350 cm 3 /(cm 2 ·s).

First claim

1 . A deodorizing filter comprising a deodorizing fiber layer that includes a fiber and a chemical adsorption deodorant ed to a surface of the fiber, wherein:
a thickness of the deodorizing fiber layer is 0.3 mm or more; a basis weight of the deodorizing fiber layer ranges from 30 to 100 g/m 2 ; and a permeability of the deodorizing filter measured by fragile form method ranges from 50 to 350 cm 3 /(cm 2 ·s).

2 . The deodorizing filter according to claim 1 , wherein a base material of the deodorizing filter is a nonwoven fabric.

3 . The deodorizing filter according to claim 1 , wherein the chemical adsorption deodorant is (1) a tetravalent metal phosphate, (2) an amine compound, (3) a zeolite, (4) an amorphous composite oxide represented by X 2 O—Al 2 O 3 —SiO 2 (X is at least one atom selected from Na, K and Li), (5) a composite material containing at least one atom selected from Ag, Cu, Zn and Mn, (6) at least one zirconium compound selected from hydrated zirconium oxide and zirconium oxide, (7) a hydrotalcite-based compound, or (8) an amorphous active oxide.

4 . The deodorizing filter according to claim 1 , wherein a content of the chemical adsorption deodorant ranges from 2 to 60 parts by mass based on 100 parts by mass of the fiber constituting the deodorizing fiber ayer.

5 . The deodorizing filter according to claim 1 , wherein a median diameter measured by a laser diffraction particle size distribution analyzer of the chemical adsorption deodorant ranges from 0.05 to 100 μm.

6 . The deodorizing filter according to claim 1 , wherein the chemical adsorption deodorant is joined to the fiber by a binder resin in the deodorizing fiber layer.

7 . The deodorizing filter according to claim 6 , wherein a content atio of the binder resin and the chemical adsorption deodorant is respectively 10 to 90% by' mass and 10 to 90% by mass based on 100% by mass of a total of the binder resin and the chemical adsorption deodorant.

Assignees

• Toagosei Co Ltd

Inventors

• Yamada Yoshinao

Classifications

• B01J20/103

  comprising silica · CPC title

• B01J20/16

  Alumino-silicates (B01J20/12 takes precedence) · CPC title

• B01J20/18

  Synthetic zeolitic molecular sieves · CPC title

• B01J20/06

  comprising oxides or hydroxides of metals not provided for in group B01J20/04 · CPC title

• B01J20/043

  Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite · CPC title