IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0957542
(2010-12-01)
|
등록번호 |
US-8742198
(2014-06-03)
|
발명자
/ 주소 |
- Wei, Ning
- Song, Xuedong
- Phillips, Ronnie L.
|
출원인 / 주소 |
- Kimberly-Clark Worldwide, Inc.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
8 |
초록
▼
A dehydration sensor having a stable, printable, buffered-ink composition that enables one to miniaturize the detection zone and permits both buffer and indicator dye to be applied in the same area of a detection zone, without need for a conventional, large buffer pad region. The ink composition inc
A dehydration sensor having a stable, printable, buffered-ink composition that enables one to miniaturize the detection zone and permits both buffer and indicator dye to be applied in the same area of a detection zone, without need for a conventional, large buffer pad region. The ink composition includes a weak polymeric base as its primary buffering agent.
대표청구항
▼
1. A dehydration sensor that consists essentially of: a porous substrate, with a buffered ink system that is directly deposited on a portion of said substrate; the buffered ink system is composed of a single active polymer in an amount of about 0.5 wt. % to about 20 wt. % of a weak polymeric base, a
1. A dehydration sensor that consists essentially of: a porous substrate, with a buffered ink system that is directly deposited on a portion of said substrate; the buffered ink system is composed of a single active polymer in an amount of about 0.5 wt. % to about 20 wt. % of a weak polymeric base, and a viscosity modifier that can produce a viscosity;a pH-sensitive dye; anda polymeric stabilizer selected from the group consisting of polyvinyl alcohol and polyethylene oxide;wherein the buffered ink system prevents the dye from leaching from the porous substrate during an assay process. 2. The dehydration sensor according to claim 1, wherein said weak polymeric base is: poly(allylamine), poly(ethyleneimine), poly(vinylamine hydrochloride), or a combination thereof. 3. The dehydration sensor according to claim 1, wherein said substrate is a polyester, cellulosic material, or rayon. 4. The dehydration sensor according to claim 1, wherein the buffered ink system is deposited in the same zone on said substrate as said pH-sensitive dye is deposited. 5. The dehydration sensor according to claim 1, wherein said buffered ink system is deposited in separate zones from said pH-sensitive dye. 6. The dehydration sensor according to claim 1, wherein said single active polymer is a polyvinyl alcohol or a polyethylene oxide. 7. The dehydration sensor according to claim 1, wherein said pH-sensitive dye exhibits a color transition at a pH from about 5.5 to about 10.5. 8. The dehydration sensor according to claim 1, wherein said pH-sensitive dye is one of the following: bromocresol green, bromothymol blue, nitrazine yellow, meta-cresol purple, thymol blue, xylenol blue, cresol red, bromophenol blue, congo red, methyl orange, bromochlorophenol blue, ethyl orange, chrysoidin, methyl red, alizarin red S, cochineal, chlorophenol red, bromocresol purple, para-nitrophenol, alizarin, brilliant yellow, neutral red, rosolic acid, phenol red, meta-nitrophenol, or a combination thereof.
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