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    Preformed polymer coating process and product
    72.
    发明授权
    Preformed polymer coating process and product 失效
    预成型聚合物涂层工艺和产品

    公开(公告)号：US06074541A

    公开(公告)日：2000-06-13

    申请号：US909856

    申请日：1997-08-12

    Applicant: Kannan Srinivasan ,  Nebojsa Avdalovic ,  Christopher A. Pohl

    Inventor： Kannan Srinivasan ,  Nebojsa Avdalovic ,  Christopher A. Pohl

    IPC: B01J20/286 ,  B01J20/32 ,  G01N27/447 ,  G01N27/26

    CPC classification number: B01J20/286 ,  B01J20/3204 ,  B01J20/3208 ,  B01J20/3219 ,  B01J20/3278 ,  B01J20/3282 ,  G01N27/44704 ,  G01N27/44752

    Abstract: A method of coating a solid support (e.g. a capillary or chromatography packing) to alter the properties of the support surface for separating components in a fluid stream. The method comprises (a) covalently binding a coupling agent (including functional groups capable of forming free radical sites under hydrogen abstraction conditions) to the support surface in a uniform layer, and (b) thereafter, contacting the bound coupling agent with a solution of preformed polymer comprising totally saturated carbon chain backbones including leaving groups, under hydrogen abstraction conditions of elevated temperature in the presence of a free radical catalyst to remove leaving groups from the carbon chains to form free radical carbon binding sites which covalently bond to the coupling agent layer and to crosslink at least some of the preformed polymer through the free radical carbon binding sites to form a dimensional polymer network coating on said solid support surface. Alternatively, the coating is applied directly to an organic solid support without an intermediate coupling agent.

    Abstract translation: 涂覆固体支持物（例如毛细管或色谱填料）以改变支撑表面的特性以分离流体流中的组分的方法。 该方法包括（a）在均匀的层中将偶联剂（包括能够在氢提取条件下形成自由基位点的官能团）共价结合到载体表面，和（b）此后，将结合的偶联剂与 包含完全饱和的碳链骨架（包括离去基团）的预成型聚合物，在升温条件下，在自由基催化剂存在下除去离开碳链的离去基团以形成共价键合到偶联剂层上的自由基碳结合位点 并且使至少一些预制聚合物通过自由基碳结合位点交联，以在所述固体支持体表面上形成尺寸聚合物网络涂层。 或者，将涂层直接施加到有机固体载体上，而不需要中间偶联剂。

    Ion-exchange composition employing resin attachment to dispersant and method for forming the same
    74.
    发明授权
    Ion-exchange composition employing resin attachment to dispersant and method for forming the same 失效
    使用树脂附着于分散剂的离子交换组合物及其形成方法

    公开(公告)号：US5324752A

    公开(公告)日：1994-06-28

    申请号：US518293

    申请日：1990-05-03

    Applicant: Victor B. Barretto ,  Stephen S. Heberling ,  Vernon E. Summerfelt ,  Christopher A. Pohl

    Inventor： Victor B. Barretto ,  Stephen S. Heberling ,  Vernon E. Summerfelt ,  Christopher A. Pohl

    IPC: B01J20/285 ,  B01J39/16 ,  B01J39/18 ,  B01J39/26 ,  B01J41/08 ,  B01J41/12 ,  B01J41/20 ,  B01J47/00 ,  G01N30/88 ,  C08J5/20

    CPC classification number: B01J20/3221 ,  B01J39/26 ,  B01J41/20 ,  B01J47/006

    Abstract: In accordance with the present invention, an ion-exchange composition has been formed which comprises synthetic resin support particles, dispersant capable of suspending the support particles in an aqueous medium to inhibit or prevent agglomeration, and fine synthetic resin layering particles. In a preferred embodiment, the complex can be formed by contacting a suitable dispersant with monomer in an aqueous solution in which the monomer is insoluble. Under suitable conditions for suspension polymerization, the monomer will polymerize to form resin support particles having dispersant irreversibly attached to those particles. The dispersant is irreversibly attached to the synthetic resin support particles, either by covalent bonding or permanent physical entanglement. The dispersant is also attached to the fine layering particles, either by covalent bonding or electrostatic forces. The result is formation of a support particle-dispersant-layering particle complex.

    Abstract translation: 根据本发明，已经形成了一种离子交换组合物，其包括合成树脂载体颗粒，能够将载体颗粒悬浮在水性介质中以抑制或防止附聚的分散剂和细小的合成树脂层压颗粒。 在优选的实施方案中，络合物可以通过使合适的分散剂与单体在单体不溶的水溶液中接触来形成。 在合适的悬浮聚合条件下，单体将聚合形成具有分散剂不可逆地连接到这些颗粒上的树脂载体颗粒。 分散剂通过共价键或永久性物理缠结不可逆地附着在合成树脂载体颗粒上。 分散剂也通过共价键或静电力连接到细分层颗粒上。 结果是形成载体颗粒 - 分散剂分层颗粒复合物。

    Analysis of liquid streams using tubing with protuberances on its inner wall
    75.
    发明授权
    Analysis of liquid streams using tubing with protuberances on its inner wall 失效
    使用在其内壁上具有突起的管道分析液体流

    公开(公告)号：US4486312A

    公开(公告)日：1984-12-04

    申请号：US522826

    申请日：1983-08-12

    Applicant: Rosanne W. Slingsby ,  Christopher A. Pohl

    Inventor： Rosanne W. Slingsby ,  Christopher A. Pohl

    IPC: G01N30/02 ,  B01D15/08 ,  B01J39/26 ,  G01N30/60 ,  G01N30/84 ,  G01N30/96

    CPC classification number: B01D15/367 ,  G01N30/96 ,  G01N2030/965 ,  G01N30/60

    Abstract: The constituents of a liquid stream are analyzed by flowing the stream through a hollow tube or fiber with spaced protuberances of a character to disrupt laminar flow and to produce turbulence. In one embodiment, the tubing includes ion exchange sites and is preferentially permeable to one of the ions of an electrolyte. In this manner, the tubing is useful as an electrolyte suppressor in ion chromatography in which the analyte ions are separated by chromatography using the electrolyte and the electrolyte is converted to weakly ionized form by passage through the tubing prior to conductivity detection.

    Abstract translation: 通过使流流过具有特征的间隔的突起的中空管或纤维来分析液体流的成分，以破坏层流并产生湍流。 在一个实施例中，管道包括离子交换位置，并且优选地可渗透电解质中的一个离子。 以这种方式，管道可用作离子色谱中的电解质抑制器，其中通过使用电解质的色谱分离分析物离子，并且在导电性检测之前通过管道将电解质转化为弱电离形式。

    Glycidol functionalized anion exchange stationary phases
    76.
    发明授权
    Glycidol functionalized anion exchange stationary phases 有权
    Glycidol官能化阴离子交换固定相

    公开(公告)号：US09486799B2

    公开(公告)日：2016-11-08

    申请号：US13610495

    申请日：2012-09-11

    Applicant: Christopher A. Pohl

    Inventor： Christopher A. Pohl

    IPC: B01J41/08 ,  B01J20/32 ,  B01J41/20 ,  B01D15/36 ,  B01J20/288

    CPC classification number: B01J41/20 ,  B01D15/363 ,  B01J20/288 ,  B01J20/3251 ,  B01J20/3289 ,  B01J41/09

    Abstract: Treatment of anion exchange materials containing hydroxyl containing moieties in the beta position relative to the quaternary center in the hydroxide form with glycidol substantially alters the selectivity of the anion exchange material. Furthermore, sequential treatments of first a hydroxide containing solution to put the anion exchange material in the hydroxide form followed by treatment with glycidol in an alternating sequence progressively changes selectivity in a predictable manner allowing facile manipulation of selectivity. Unique to the selectivities achievable with this chemistry is the ability to reverse the elution order of sulfate and carbonate. With all other known systems, carbonate elutes ahead of sulfate and sometimes compromises the ability to quantitate sulfate. With glycidol treatment, carbonate can be moved after sulfate which eliminates interference issues for samples containing significantly more carbonate than sulfate. This modification is useful for columns operated with a hydroxide or carbonate eluent system.

    Abstract translation: 含有羟基的阴离子交换材料相对于具有缩水甘油的氢氧化物形式的季中心的β位置的处理基本上改变了阴离子交换材料的选择性。 此外，首先连续处理含氢氧化物溶液以将阴离子交换材料置于氢氧化物形式，然后以交替的顺序用缩水甘油处理，以可预测的方式逐渐改变选择性，从而容易地操纵选择性。 通过该化学可以实现的选择性独特的是反转硫酸盐和碳酸盐的洗脱顺序的能力。 使用所有其他已知的系统，碳酸盐在硫酸盐之前洗脱，有时会损害硫酸盐的定量能力。 通过缩水甘油处理，碳酸盐可以在硫酸盐之后移动，消除了含有比硫酸盐显着更多的碳酸盐的样品的干扰问题。 该修饰对于用氢氧化物或碳酸盐洗脱液系统操作的柱是有用的。

    Surrogate addition device and a method of analyte concentration
    80.
    发明授权
    Surrogate addition device and a method of analyte concentration 有权
    替代添加装置和分析物浓缩方法

    公开(公告)号：US09074972B2

    公开(公告)日：2015-07-07

    申请号：US13473318

    申请日：2012-05-16

    Applicant: Rosanne Williamson Slingsby ,  Jing Hong ,  Douglas M. Jamieson ,  Christopher A. Pohl

    Inventor： Rosanne Williamson Slingsby ,  Jing Hong ,  Douglas M. Jamieson ,  Christopher A. Pohl

    IPC: B01D21/00 ,  G01N1/40 ,  G01N33/18 ,  G01N30/00

    CPC classification number: G01N1/40 ,  G01N1/405 ,  G01N30/00 ,  G01N33/1893 ,  Y10T436/24 ,  Y10T436/255

    Abstract: A surrogate addition device is described that adds a surrogate compound at a uniform transport rate to a flowing sample stream. The surrogate addition device includes a surrogate reservoir, a flow chamber, and a diffusion barrier. The surrogate reservoir can be configured to contain a surrogate solution where the surrogate solution includes a surrogate compound. The flow chamber includes an inlet port and an outlet port. At least a portion of the diffusion barrier is disposed in between the surrogate reservoir and the flow chamber. The diffusion barrier may include an inner surface that forms a wall of the surrogate reservoir, and an outer surface that forms a wall of the flow chamber. The flow chamber can be configured to receive a flowing sample solution across the outer surface of the diffusion barrier and also to diffuse the surrogate compound from the surrogate reservoir to the flow chamber.

    Abstract translation: 描述了替代添加装置，其以均匀的输送速率向流动的样品流添加替代化合物。 替代添加装置包括代理储存器，流动室和扩散屏障。 替代储存器可配置为含有替代溶液，其中替代溶液包含替代化合物。 流动室包括入口和出口。 扩散阻挡层的至少一部分设置在代理储存器和流动室之间。 扩散阻挡层可以包括形成代理储存器的壁的内表面和形成流动室的壁的外表面。 流动室可以被配置为在扩散阻挡层的外表面上接收流动的样品溶液，并且还将替代化合物从代理储存器扩散到流动室。

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