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    METHODS OF SURFACE TREATING POROUS PARTICLES
    2.
    发明申请
    METHODS OF SURFACE TREATING POROUS PARTICLES 审中-公开
    表面处理多孔颗粒的方法

    公开(公告)号：WO2011063392A2

    公开(公告)日：2011-05-26

    申请号：PCT/US2010057799

    申请日：2010-11-23

    Applicant: 3M INNOVATIVE PROPERTIES CO ,  BADRI BRINDA B ,  DAVID MOSES M ,  RONG HAOMING ,  VEERARAGHAVAN BADRI

    Inventor： BADRI BRINDA B ,  DAVID MOSES M ,  RONG HAOMING ,  VEERARAGHAVAN BADRI

    IPC: B01J20/32 ,  A61L9/01 ,  B01J2/30 ,  C01B31/08 ,  C08J9/36

    CPC classification number: A61L15/425 ,  A61F13/42 ,  A61F13/8405 ,  A61L15/46 ,  A61L2300/606 ,  B01J20/24 ,  B01J20/267 ,  B01J20/28004 ,  B01J20/28028 ,  B01J20/28078 ,  B01J20/3204 ,  B01J20/3208 ,  B01J20/3246 ,  B01J2220/42 ,  B01J2220/46 ,  B01J2220/49

    Abstract: A method of treating porous particles, each porous particle having an external surface and a multiplicity of pores with interior pore surfaces, by contacting the external surface with a hydrophobic agent while causing the interior pore surfaces to remain substantially free of the hydrophobic agent. In certain illustrative embodiments, treating the external surfaces of the porous particles includes exposing the porous particles to at least one of water vapor, methanol vapor, or ethanol vapor; and subsequently exposing the porous particles to a second vapor comprising a reactive organosilane compound which reacts to form the hydrophobic agent. In some particular illustrative embodiments, at least a portion of the external surface of the treated porous particle includes hydrophobic groups, the hydrophobic groups selected from at least one of alkyl or aryl groups optionally substituted with fluorine, and siloxanes having alkyl groups, aryl groups, or combinations thereof.

    Abstract translation: 通过使外表面与疏水剂接触，同时使内孔表面保持基本上不含疏水剂，处理多孔颗粒的方法，每个多孔颗粒具有外表面和具有内孔表面的多个孔。 在某些说明性实施例中，处理多孔颗粒的外表面包括将多孔颗粒暴露于水蒸气，甲醇蒸气或乙醇蒸气中的至少一种; 随后将多孔颗粒暴露于包含反应形成疏水剂的反应性有机硅烷化合物的第二蒸气。 在一些特定的说明性实施方案中，经处理的多孔颗粒的外表面的至少一部分包含疏水基团，疏水基团选自任选被氟取代的烷基或芳基中的至少一个，以及具有烷基，芳基， 或其组合。

    WETNESS SENSOR USING RF CIRCUIT WITH FRANGIBLE LINK
    3.
    发明申请
    WETNESS SENSOR USING RF CIRCUIT WITH FRANGIBLE LINK 审中-公开
    带有无线链路的RF电路的湿度传感器

    公开(公告)号：WO2013023054A3

    公开(公告)日：2013-05-10

    申请号：PCT/US2012050136

    申请日：2012-08-09

    Applicant: 3M INNOVATIVE PROPERTIES CO

    Inventor： JOHNSON JUSTIN M ,  PRIOLEAU LORI-ANN S ,  BADRI BRINDA B ,  VANOUS JAMES C ,  LORENTZ ROBERT D ,  CHATTERTON JACOB D ,  PERRON STEVEN J ,  BATTLES DONALD R

    IPC: G01N27/02 ,  A61F13/42

    CPC classification number: A61F13/42 ,  A61F2013/424 ,  G01N27/223

    Abstract: A wetness sensor includes a substrate that carries a tuned RF circuit. The circuit includes a conductive pattern applied to the substrate, a capacitor, and a jumper all disposed on a same side of the substrate. The conductive pattern includes an inductive coil, and an inner and outer terminus. The jumper electrically couples the inner terminus to the outer terminus. The jumper also includes a frangible link which, when contacted by a target fluid, produces a drastic change in the operation of the RF circuit. The drastic change can be interpreted by a remote reader as a "wet" condition. Contact of the frangible link by the target fluid may change the impedance or resistance of the RF circuit by at least a factor of 5, 10, 100, or more, and/or may cause the frangible link to disintegrate to produce an open circuit, and/or may substantially render the RF circuit inoperative.

    Abstract translation: 湿度传感器包括承载调谐RF电路的基板。 该电路包括施加到衬底的导电图案，电容器和跳线，它们全都布置在衬底的同一侧上。 导电图案包括感应线圈，以及内部和外部终端。 跳线将内部终端电耦合到外部终端。 跳线还包括易碎连接，当与目标流体接触时，该连接产生RF电路操作的剧烈变化。 剧烈的变化可以被远程读者解释为“湿”状态。 易碎连接体与目标流体的接触可以将RF电路的阻抗或电阻改变至少5,10,100倍或更多倍，和/或可以使易碎连接体分裂以产生开路， 和/或可能实质上使RF电路不工作。

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