Odor controlling article including a visual indicating device for monitoring odor absorption
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61F-013/15
A61F-013/47
A61F-013/472
A61F-013/49
A62B-018/02
A61K-008/00
A61K-009/14
A61K-033/00
A61K-033/34
A61K-009/70
출원번호
UP-0687269
(2003-10-16)
등록번호
US-7837663
(2011-01-22)
발명자
/ 주소
MacDonald, John Gavin
Boga, RameshBabu
Kim, Jaeho
Do, Bao Trong
Kuznetsov, Irene
출원인 / 주소
Kimberly-Clark Worldwide, Inc.
대리인 / 주소
Dority & Manning, P.A.
인용정보
피인용 횟수 :
7인용 특허 :
206
초록▼
The present invention relates to a visual indicating device and an article for controlling odors, in particular foot, garbage, basement, cooking, pet, tobacco, feces and urine odors. The article comprises a visual indicating agent that is color sensitive to the odor, and optionally, an odor absorbin
The present invention relates to a visual indicating device and an article for controlling odors, in particular foot, garbage, basement, cooking, pet, tobacco, feces and urine odors. The article comprises a visual indicating agent that is color sensitive to the odor, and optionally, an odor absorbing agent. The visual indicating agent changes color when the article has been exposed to a sufficient amount of odor to saturate the article. The indicating agent may be applied in differing concentrations to two or more zones so as to indicate to a user of the article how much of the odor absorbing capacity has been used, or conversely, how much of the odor absorbing capacity remains. Suitable visual indicating agents that change color in response to odors are also described. The article for controlling odors may be a disposable odor absorbing sheet, air freshening product, diaper, undergarment pad, face mask, air filtration device, sanitary napkin, tampon, panty shield or incontinence pad.
대표청구항▼
What is claimed is: 1. An article for controlling odor, the article comprising a substrate which includes an odor absorbing agent and at least one visual indicating agent in an amount effective to change color when exposed to an odor, the odor absorbing agent comprising nanoparticles, the visual in
What is claimed is: 1. An article for controlling odor, the article comprising a substrate which includes an odor absorbing agent and at least one visual indicating agent in an amount effective to change color when exposed to an odor, the odor absorbing agent comprising nanoparticles, the visual indicating agent being present in differing concentrations in two or more juxtaposed zones on the substrate, the concentrations in the two or more juxtaposed zones configured to indicate to the user the odor absorbing capacity remaining in the article such that the zone with the lowest concentration of visual indicating agent changes color first and the zone with the highest concentration of visual indicating agent changes color last so that the remaining odor absorbing capacity can be determined based on the number of zones which have yet to undergo the color change, wherein the at least one visual indicating agent is selected from the group consisting of 4,4′-bis(dimethylamino)-benzhydrol, pararosaniline, alpha-naphtholbenzene, and naphthochrome green. 2. The article of claim 1, wherein the indicating agent indicates when the article has been exposed to sufficient odor to saturate the article by changing color. 3. The article of claim 1, wherein the substrate is a disc, patch, strip, or combination thereof. 4. The article of claim 1, wherein the indicating agent is printed in solution onto the substrate and allowed to dry so that the dried residue of the solution remains on the substrate. 5. The article of claim 1, wherein the indicating agent is coated in solution onto the substrate and allowed to dry so that the dried residue of the solution remains on the substrate. 6. The article of claim 1, wherein the indicating agent is applied in differing concentrations in two or more juxtaposed zones to indicate how much of the odor absorbing capacity of the article has not been utilized. 7. The article of claim 1, wherein the indicating agent is applied in differing concentrations in two or more juxtaposed zones to indicate how much of the odor absorbing capacity of the article has been utilized. 8. The article of claim 1, wherein the odor is selected from the group consisting of body odor, foot odor, urinary odor, tobacco odor, meat odor, garbage odor, basement odor, and odors prevalent in other odorous elements and compounds, the odorous elements and compounds selected from the group consisting of mercaptans, sulfide, hydrogen sulfide, amines, ammonia, sulfur, sulfur degradation products, aliphatic acids, isovaleric acid, butyric acid and acetic acid. 9. The article of claim 1, wherein the visual indicating agent is 4,4′-bis(dimethylamino)-benzhydrol. 10. The article of claim 1, which is selected from a disposable odor absorbing sheet, diaper, undergarment pad, face mask, filtration device, sanitary napkin, tampon, panty shield and incontinence pad. 11. The article of claim 1, wherein the nanoparticles include silica, alumina, or combinations thereof. 12. The article of claim 1, wherein the substrate comprises fibers. 13. The article of claim 1, wherein the visual indicating agent is pararosaniline base. 14. The article of claim 1, wherein the visual indicating agent is present in an amount of from about 0.001 to 15 wt. %. 15. The article of claim 1, wherein the visual indicating agent is present in an amount of from about 1.1 to 1 wt. %. 16. The article of claim 1, wherein the visual indicating agent is alpha-naphtholbenzene. 17. The article of claim 1, wherein the visual indicating agent is naphthochrome green. 18. The article of claim 1, wherein the nanoparticles are modified with a metal ion, a chlorite ion, a persulfate ion, a permanganate ion, or combinations thereof. 19. The article of claim 18, wherein the metal ion is selected from the group consisting of copper ion, silver ion, gold ion, iron ion, and combinations thereof. 20. The article of claim 1, wherein the odor absorbing agent further comprises activated charcoal, sodium bicarbonate, clay, zeolites, molecular sieves, or combinations thereof. 21. A method for visually indicating when an article for controlling odor is saturated comprising the steps of: introducing into or onto the article an odor absorbing agent, the odor absorbing agent comprising nanoparticles; introducing into or onto the article a visual indicating agent that is color sensitive to the odor, wherein the visual indicating agent is introduced in different concentrations in two or more juxtaposed zones into or onto the article, the visual indicating agent configured to provide a change in color that is indicative of the odor absorbing capacity remaining in the article such that the zone with the lowest concentration of visual indicating agent changes color first and the zone with the highest concentration of visual indicating agent changes color last so that the remaining odor absorbing capacity can be determined based on the number of zones which have yet to undergo the color change, wherein the visual indicating agent is selected from the group consisting of 4,4′-bis(dimethylamino)-benzhydrol, pararosaniline, alpha-naphtholbenzene, and naphthochrome green, and observing the change in color of the visual indicating agent when the article is saturated with the odor. 22. The method of claim 21, wherein the visual indicating agent is 4,4′-bis(dimethylamino)-benzhydrol. 23. The method of claim 21, wherein the visual indicating agent is pararosaniline base. 24. The method of claim 21, wherein the article is selected from a disposable odor absorbing sheet, diaper, undergarment pad, face mask, filtration device, sanitary napkin, tampon, panty shield and incontinence pad. 25. The method of claim 21, wherein the article comprises a substrate on which the visual indicating agent is disposed. 26. The method of claim 21, wherein the visual indicating agent is alpha-naphtholbenzene. 27. The method of claim 21, wherein the visual indicating agent is naphthochrome green. 28. The method of claim 21, wherein the nanoparticles include silica, alumina, or combinations thereof. 29. The method of claim 21, wherein the nanoparticles are modified with a metal ion, a chlorite ion, a persulfate ion, a permanganate ion, or combinations thereof. 30. The method of claim 29, wherein the metal ion is selected from the group consisting of copper ion, silver ion, gold ion, iron ion, and combinations thereof. 31. The method of claim 21, wherein the odor absorbing agent further comprises activated charcoal, sodium bicarbonate, clay, zeolites, molecular sieves, or combinations thereof. 32. The method of claim 21, wherein at least one of the juxtaposed zones including the visual indicating agent is configured to change from a first color to a second color, the second color signifying that the article is saturated with odor. 33. The method of claim 21, wherein at least one of the juxtaposed zones including the visual indicating agent is configured to change from a first color to colorless, the lack of color signifying that the article is saturated with odor. 34. The method of claim 21, wherein at least one of the juxtaposed zones including the visual indicating agent is configured to change from colorless to a first color, the first color signifying that the article is saturated with odor.
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