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Filter media for deactivating pathogens and/or allergens

A filter medium, allergen technology, applied in the field of depleting pathogens and/or allergens, can solve the problems of low anti-allergen potential, poor allergen removal effect, etc.

Pending Publication Date: 2022-06-07
CARL FREUDENBERG KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However polyphenols have the disadvantage that they have a relatively low antiallergenic potential for example on filters over a longer period of time
It is shown in the Examples section, especially Comparative Example 1 (Table 1), that the use of acid alone (and EDTA and alcohol) without the compound of formula (I) results in very poor allergen removal

Method used

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  • Filter media for deactivating pathogens and/or allergens
  • Filter media for deactivating pathogens and/or allergens
  • Filter media for deactivating pathogens and/or allergens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0145] It is a carrier non-woven fabric composed of polyester spunbond non-woven fabric (weight per unit area: 60 g / m 2 ) was equipped with citric acid in an antiviral manner. The antiviral dosing of the carrier nonwoven is carried out here by applying an aqueous solution of the active substance to the carrier nonwoven and subsequently drying the already prepared nonwoven in order to obtain a sample for analysis therefrom. The nonwoven thus prepared contained citric acid in an amount of 10 mg by weight relative to 100 mg of the nonwoven.

[0146] The size of the sample used in the test was 20mm x 20mm. Similar to ISO 18184:2019-06, the antiviral activity was tested on three samples respectively. Each sample, cut into 20mm x 20mm sized pieces, was immersed in solutions of known initial virus concentrations of virus strains A / PR8 / 34H1N1 and HCoV229E at 25°C. After two hours of soaking, the supernatant was pipetted, and the virus concentration in each sample was determined and...

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Abstract

The invention relates to a filter medium, to a filter assembly for filtering gas-particle systems comprising such a filter medium, to a method for depleting pathogens and / or allergens from air and other gases by means of such a filter medium, and the use of the filter media for depleting pathogens and / or allergens from air and other gases.

Description

technical field [0001] The present invention relates to a filter medium, a filter assembly for filtering gas-particle systems comprising such a filter medium, a filter medium for depleting pathogens and / or allergens from air and other gases by means of such a filter medium and the use of said filter media for depleting pathogens and / or allergens from air and other gases. Background technique [0002] It is known to use filter systems in air technology installations, eg buildings or vehicles, in order to reduce the content of undesired particulate components in the air, such as allergy-inducing components and pathogenic microorganisms. [0003] Allergens are substances that are recognized by the immune system as "in vitro" and thus fight against in order to prevent possible disease. If certain regulatory mechanisms of the immune system fail, there is an overreaction to virtually non-dangerous allergens, with typical allergic syndromes such as allergic rhinitis or allergic br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/56B01D46/62B01D46/30B01D46/54
CPCB01D46/0028B01D46/0036B01D46/30B01D46/543B01D46/12B01D39/1623B01D39/083B01D39/18B01D2239/0627B01D2239/0622B01D2239/0442B01D2239/0464B01D2239/0478B01D2239/0407B01D2239/065B01D2239/086B01D2239/1233B01D2239/1225B01D39/08B01D2239/0654B01D2257/91B01D2239/0618B01D46/546
Inventor U·施塔尔U·黑夫纳H·沙赫特
Owner CARL FREUDENBERG KG