Device and method for quantitative evaluation of deodorant performance

Patent metadata

Field	Value
Publication number	US-12050211-B2
Application number	US-202017271003-A
Country	US
Kind code	B2
Filing date	Apr 9, 2020
Priority date	May 17, 2019
Publication date	Jul 30, 2024
Grant date	Jul 30, 2024

Abstract

The present invention relates to a device and a method for evaluating performance of a deodorant using a superabsorbent polymer (SAP), and the device and method are capable of quantitatively evaluating deodorant performance by collecting ammonia adsorbed to deodorant materials including the SAP and measuring the amount of ammonia thereof.

First claim

What are claimed are:

1. An apparatus for quantitatively evaluating performance of a deodorant member, comprising:
a vaporization module configured to vaporize an ammonia water;
an adsorption/desorption module connected to the vaporization module, and configured to adsorb and desorb the vaporized ammonia on a surface of the deodorant member; and
a collection module connected to the adsorption/desorption module, and configured to collect the desorbed ammonia gas,
wherein the adsorption/desorption module comprises a reactor, the deodorant member accommodated in the reactor, a tubular kiln adapted to heat the reactor, and a by-pass adapted to inject a carrier gas into the reactor, and
the deodorant member comprises a deodorant agent-containing superabsorbent polymer (SAP) or a mixture of a deodorant agent and a superabsorbent polymer,
wherein the vaporization module comprises a syringe pump; a first stainless tube connected to a syringe tip of the syringe pump; a second stainless tube having a stainless line inserted therein; a heating band surrounding the second stainless tube; and a gas injection unit for injecting the carrier gas into the second stainless tube.

2. The apparatus according to claim 1 , wherein a length of the heating band is 3 m or more.

3. The apparatus according to claim 1 , wherein the collection module comprises an impinger and water accommodated in the impinger.

4. A method for quantitatively evaluating performance of a deodorant member using the apparatus of claim 1 , the method comprising:
heating an ammonia to vaporize it;
adsorbing the vaporized ammonia to the deodorant member;
desorbing the ammonia from the deodorant member by injecting a carrier gas into the deodorant member having the ammonia gas adsorbed therein for 5 minutes to 1 hour, and raising a temperature from 100° C. to 700° C. at a rate of 1 to 10° C./min; and
collecting and quantitatively analyzing the desorbed ammonia gas through an impinger.

5. The method according to claim 4 , wherein the quantitative analysis of the collected ammonia is performed using one or more selected from the group consisting of gas chromatography (GC)-thermal conductivity detector (TCD), GC-flame ionisation detector (FID), GC-electron capture detector (ECD), GC-mass spectrometry (MS) and ion chromatography.

6. A system for evaluating performance of the deodorant member, comprising the apparatus of claim 1 .

7. The apparatus according to claim 1 , wherein the deodorant agent comprises a porous adsorbent material, a zeolite, an aluminosilicate particle, an aluminosilicate particle carrying an organic acid, an activated carbon, zirconium phosphate, kate, a zinc oxide or a mixture thereof.

Assignees

• Lg Chemical Ltd

Inventors

• Son Jihyang
• Jung Min Hwan
• Lee Jin Woo

Classifications

• G01N33/0054

  Ammonia · CPC title

• G01N2030/885

  involving polymers · CPC title

• G01N30/88

  Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 · CPC title

• G01N30/70

  Electron capture detectors · CPC title

• G01N30/68

  Flame ionisation detectors · CPC title