IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0973504
(2001-10-09)
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발명자
/ 주소 |
- Munagavalasa, Murthy S.
- Forkner, Stacey L.
- Flashinski, Stanley J.
- Buchaklian, Adam Hagop
- Houser, David J.
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출원인 / 주소 |
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인용정보 |
피인용 횟수 :
23 인용 특허 :
15 |
초록
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A time duration of end of product life indicator is disclosed which utilizes a volatile dye coated or impregnated into a substrate or carrier. The dye evaporates as a volatile component of the product evaporates thereby changing the color of the substrate or carrier. The consumer is alerted to the d
A time duration of end of product life indicator is disclosed which utilizes a volatile dye coated or impregnated into a substrate or carrier. The dye evaporates as a volatile component of the product evaporates thereby changing the color of the substrate or carrier. The consumer is alerted to the depletion of the volatile component of the product when the substrate or carrier changes from a colored or dyed state to an uncolored state. As a result, a visual time duration or end of product life indicator is provided.
대표청구항
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1. A time duration indicating system for a product, the system comprising:a substrate having a volatile air treating component, anda volatile dye, wherein the volatile dye is guaiazulene,the volatile dye being coated onto the substrate thereby coloring the substrate, the volatile dye evaporating ove
1. A time duration indicating system for a product, the system comprising:a substrate having a volatile air treating component, anda volatile dye, wherein the volatile dye is guaiazulene,the volatile dye being coated onto the substrate thereby coloring the substrate, the volatile dye evaporating over time resulting in a color change for the substrate. 2. The time duration indicating system of claim 1, wherein the volatile component is N,N-diethyl-m-toluamide. 3. The time duration indicating system of claim 1, wherein the volatile component is transfluthrin. 4. The time duration indicating system of claim 1, wherein the substrate is made from a material selected from the group consisting of cellulose, matted glass fibers, paper, ceramic, felt, woven fabric, nonwoven fabric, and polymeric powders or mixtures thereof. 5. The time duration indicating system of claim 1, further comprising a retarder selected from the group consisting of hexadecane, tetradecene, transfluthrin, dodecene, N,N-diethyl-m-toluamide, vapothin, permethin, prallethrin, tefluthrin, and esbiothrin. 6. The time duration indicating system of claim 1, further comprising a reference template having a color substantially the same as the substrate coated with the volatile dye and prior to any substantial volatilization of said dye. 7. The time duration indicating system of claim 1, further comprising a reference template having a color substantially the same as the substrate after substantially all of the dye has been volatized. 8. The time duration indicating system of claim 1, wherein the volatile component is an insect repellant. 9. The time duration indicating system of claim 1, further comprising a solvent, the volatile dye being dissolved in the solvent to form an intermediate solution, the substrate being coated with the intermediate solution. 10. The time duration indicating system of claim 9, wherein the solvent is selected from the group consisting of isoparaffinic hydrocarbon solvents, heptane, methanol, acetone, ethanol, isopropyl alcohol, dodecene and tetrahydrofuran or mixtures thereof. 11. The time duration indicating system of claim 1, wherein the volatile component is an insecticide. 12. The time duration indicating system of claim 11, wherein the insecticide is a pyrethroid. 13. The time duration indicating system of claim 11, wherein the insecticide is selected from the group consisting of transfluthrin, vapothrin, permethrin, prallethrin, tefluthrin and esbiothrin. 14. A method for indicating an end of life of a product, the method comprising:providing a substrate having a volatile air treating component;providing a solvent and a retarder;mixing a volatile dye with the solvent and the retarder to form an intermediate solution; andcoating the substrate with the intermediate solution containing the volatile dye and the retarder thereby coloring the substrate, the volatile dye volatilizing over time resulting in a color change for the substrate and thereby indicating the end of the life of the product. 15. The method of claim 14, wherein the volatile dye is guaiazulene and the volatile component is an insecticide. 16. The method of claim 14, wherein the volatile dye is guaiazulene and the volatile component is transfluthrin. 17. The method of claim 14, wherein the retarder is selected from the group consisting of hexadecane, tetradecene, transfluthrin, dodecene, N,N-diethyl-m-toluamide, vapothrin, permethrin, prallethrin, tefluthrin, and esbiothrin. 18. A method for indicating an end of life of a product, the method comprising:providing a substrate having a volatile air treating component;providing a retarder;mixing a volatile dye with the retarder; andcoating the substrate with the volatile dye and the retarder thereby coloring the substrate, the volatile dye volatilizing over time resulting in a color change for the substrate and thereby indicating the end of the life of the product. 19. The method of claim 18, wherein the retarder is selected f rom the group consisting of hexadecane, tetradecene, transfluthrin, dodecene, N,N-diethyl-m-toluamide, vapothrin, permethrin, prallethrin, tefluthrin, and esbiothrin. 20. An insecticide product with an end of life color change indicator, comprising:a substrate,a volatile insecticide coated onto the substrate, the volatile insecticide selected from the group consisting of transfluthrin, permethrin, permethrin, prallethrin, tefluthrin and esbiothrin, andquaiazulene coated onto the substrate,wherein the color change indicator includes guaiazulene die coated onto the substrate. 21. The insecticide product of claim 20, further comprising a reference template disposed adjacent to the substrate and having a color substantially the same as the substrate coated with the guaiazulene dye and prior to volatilization of the guaiazulene dye. 22. The insecticide product of claim 20, further comprising a reference template disposed adjacent to the substrate and having a color substantially the same as the substrate after substantially all of the guaiazulene dye has been volatized.
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