Mold-preventing air filter filtration medium and mold-preventing air filter

Patent metadata

Field	Value
Publication number	US-10173159-B2
Application number	US-201314378391-A
Country	US
Kind code	B2
Filing date	Feb 12, 2013
Priority date	Feb 17, 2012
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

A mold-preventing air filter filtration medium loaded with a water-retaining macromolecule polymer, a mold-preventing agent, and a binder resin, is formed by immersing a filter material or a reinforcing nonwoven fabric (a backing material) in a mold-preventing composition in which the water-retaining macromolecule polymer, the mold-preventing agent and the binder resin are dissolved, and drying the filter material or the reinforcing nonwoven fabric. The reinforcing nonwoven fabric (a backing material) may be bonded to a filter material to form a mold-preventing air filter filtration medium. A mold-preventing air filter includes the mold-preventing air filter filtration medium that is pleated and accommodated in a frame.

First claim

The invention claimed is:

1. A mold-preventing air filter filtration medium,
wherein the filtration medium is loaded with a water-retaining macromolecule polymer, a mold-preventing agent and a binder resin, and
wherein the water-retaining macromolecule polymer is a copolymer of a phosphorylcholine-like group containing monomer and a hydrophilic monomer having at least one trialkylamino base,
wherein the water-retaining macromolecule polymer and the mold-preventing agent are combined in a solid weight ratio of 1:10-500, and
wherein the phosphorylcholine-like group containing monomer is represented by the following formula (1)

wherein X represents a divalent organic residue,
wherein Y represents an alkyleneoxy group having 1-6 carbon atoms,
wherein Z represents a hydrogen atom or R5-O—(C═O)—
wherein R5 represents an alkyl group having 1-10 carbon atoms or a hydroxyalkyl group having 1-10 carbon atoms,

wherein R1 represents a hydrogen atom or a methyl group,
wherein R2, R3, and R4 are the same or different, and represent a hydrogen atom or an alkyl or hydroxyalkyl group having 1-6 carbon atoms,
wherein m represents 0 or 1, and
wherein n is an integer of 1-4.

2. The mold-preventing air filter filtration medium according to claim 1 , wherein the filtration medium is formed by bonding a reinforcing nonwoven fabric loaded with the water-retaining macromolecule polymer, the mold-preventing agent and the binder resin to a filter material.

3. The mold-preventing air filter filtration medium according to claim 1 , wherein the mold-preventing agent and the binder resin are combined in a solid weight ratio of 1:0.5-10.

4. The mold-preventing air filter filtration medium according to claim 1 , wherein the phosphorylcholine-like group containing monomer comprises 2-(meth)acryloyloxyethyl-2′-(trimethyl ammonio)ethyl phosphate.

5. The mold-preventing air filter filtration medium according to claim 1 , wherein the hydrophilic monomer comprising the trialkylamino base is 2-hydroxy-3-(meth)acryloyloxypropyl trimethyl ammonium chloride.

6. The mold-preventing air filter filtration medium according to claim 1 , wherein the binder resin is an acrylic resin.

7. A mold-preventing air filter comprising:
a pleated filtration medium formed by pleating the mold-preventing air filter filtration medium according to claim 1 ; and
a frame for accommodating the pleated filtration medium.

8. The mold-preventing air filter filtration medium according to claim 4 , wherein the hydrophilic monomer comprising the trialkylamino base is 2-hydroxy-3-(meth)acryloyloxypropyl trimethyl ammonium chloride.

Assignees

• Fine Tech Co Ltd
• Nof Corp
• Daikin Ind Ltd

Inventors

• Ichikawa Yukimitsu
• Goto Kanya
• Dosaka Narumi
• Fukushima Yumiko
• Fujimaki Yasuhito
• Yamada Satoshi
• Tanaka Osamu

Classifications

• D06M16/00

  Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic · CPC title

• B01D46/0005

  Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence) · CPC title

• B01D39/163 Primary

  sintered or bonded · CPC title

• D06M15/3564

  containing phosphorus · CPC title

• D06M13/355

  having six-membered heterocyclic rings · CPC title