发明名称 |
Organic Vapor Sorbent Protective Device With Thin-Film Indicator |
摘要 |
A sorbent media protective device includes an enclosure having a gas inlet, gas outlet and a thin-film multilayer indicator. The thin-film multilayer indicator is proximate sorbent media that can sorb a vapor of interest flowing from the gas inlet towards the gas outlet. The indicator includes a porous detection layer whose optical thickness changes in the presence of the vapor, located between a semireflective layer and a reflective layer permeable to the vapor. With equilibration at the applied vapor concentration between at least a portion of the media and the vapor, the vapor can pass through the reflective layer into the detection layer and change the detection layer optical thickness sufficiently to cause a visibly discernible change in the indicator appearance if viewed through the semireflective layer.
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申请公布号 |
US2008063575(A1) |
申请公布日期 |
2008.03.13 |
申请号 |
US20060530614 |
申请日期 |
2006.09.11 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
RAKOW NEAL A.;MATHERS JAMES P.;ZHANG JUN-YING;PAOLUCCI DORA M.;POIRIER RICHARD J.;DAVID MOSES M.;TREND JOHN E.;WENDLAND MICHAEL S. |
分类号 |
G01N31/22 |
主分类号 |
G01N31/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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