IP Library › Granted Patent US 10,300,159
Granted Patent B2
US 10,300,159 · App. 14/115,783 · Granted May 28, 2019

Method for deactivating preferably odor-relevant molecules and device for carrying out said method

Inventors: Gregor Morfill (Munich, DE); Tetsuji Shimizu (Garching, DE); Julia Zimmermann (Munich, DE); Yangfang Li (Garching, DE); Bernd Steffes (Oberammergau, DE)
Assignee: Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V.
A61L2/14A61L9/22B01D53/32F24C15/20H05H1/2406A61N5/0624B01D2257/90B01D2257/91B01D2259/818H05H2001/2418
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Quick Facts
Patent No.
US 10,300,159
App. No.
14/115,783
Granted
May 28, 2019
Kind
B2
Abstract

A method for deactivating preferably odor-relevant molecules that is distinguished by the following steps is proposed: generating a plasma; deactivating preferably odor-relevant molecules by the effect of hot electrons of the plasma on the molecules to be deactivated.

Claims (16)

1. A method for deactivation of odor-relevant molecules associated with a material to be treated, said method comprising the following steps:

providing a plasma source comprising an electrode and a counter-electrode, wherein the electrode and the counter-electrode are spaced apart from each other by a dielectric and face a same side of the material to be treated at a distance of 0 to 4 mm;

igniting a discharge so as to generate a plasma at the distance of 0 to 4 mm from the side of the material toward which both the electrode and the counter-electrode face; and

applying to the odor-relevant molecules hot electrons of the plasma so as to deactivate the odor-relevant molecules by an electron dissociation mechanism which alters molecular structures of the odor-relevant molecules, wherein: (a) the hot electrons are electrons that have an average kinetic energy of at least one electron volt, and (b) the material to be treated is a textile material.

2. The method according to claim 1 , wherein the odor-relevant molecules are attached to a surface.

3. The method according to claim 1 , wherein bacteria are killed by the plasma.

4. The method according to claim 1 , wherein the distance is chosen to balance a bactericidal effect based on reactive species of the plasma against an odor-relevant molecule deactivation effect based on the hot electrons of the plasma.

5. The method according to claim 2 , wherein an additive is applied to the surface.

6. The method according to claim 5 , wherein the additive is a deodorant and/or antiperspirant.

7. The method according to claim 1 , further comprising a deactivation of non-odor-relevant molecules which are allergens.

8. A method for deactivation of odor-relevant molecules associated with a material to be treated, said method comprising the following steps:

providing a plasma source comprising an electrode, a counter-electrode and a dielectric, wherein the electrode and the counter-electrode are spaced apart from each other by the dielectric and face a same side of the material to be treated;

igniting a discharge so as to generate a plasma on the side of the material towards which both the electrode and the counter-electrode face, wherein the plasma is in contact with the material; and

applying to the odor-relevant molecules hot electrons of the plasma so as to deactivate the odor-relevant molecules by an electron dissociation mechanism which alters molecular structures of the odor-relevant molecules, wherein the hot electrons are electrons that have an average kinetic energy of at least one electron volt,

wherein: (a) the odor-relevant molecules are in a fluid stream in a device that generates or conveys a fluid stream, and (b) the material to be treated is a textile material.

9. The method according to claim 1 , wherein the odor-relevant molecules are predominantly deactivated by hot electrons of the plasma.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 18, 2014
From: MORFILL, GREGOR; SHIMIZU, TETSUJI; ZIMMERMANN, JULIA; LI, YANGFANG; STEFFES, BERND
To: MAX-PLANCK-GESELLSCHAFT ZUR FOERDERUNG DER WISSENSCHAFTEN E.V.
Reel/Frame 032459/0268 →
Priority Claims (2)
DE 10 2011 100 751 · May 5, 2011 · national
DE 10 2011 118 996 · Nov 19, 2011 · national
Continuity (1)
Related Publication 20140147333A1 · May 29, 2014
Cited By (3)
US 12,457,677 US 12,484,137 US 12,696,369