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    Control of polymer surface molecular architecture via amphipathic endgroups
    4.
    发明申请
    Control of polymer surface molecular architecture via amphipathic endgroups 有权
    通过两亲性端基控制聚合物表面分子结构

    公开(公告)号：US20050282997A1

    公开(公告)日：2005-12-22

    申请号：US11211734

    申请日：2005-08-26

    申请人： Robert Ward ,  Keith McCrea ,  Yuan Tian ,  James Parakka

    发明人： Robert Ward ,  Keith McCrea ,  Yuan Tian ,  James Parakka

    IPC分类号： A61L27/14 ,  A61L27/18 ,  A61L29/06 ,  A61L31/06 ,  C08F20060101 ,  C08F2/00 ,  C08G18/08 ,  C08G18/12 ,  C08G18/28 ,  C08G18/50 ,  C08G18/62 ,  C08G18/67 ,  C08G65/00 ,  C08G65/329 ,  C08G69/08 ,  C08J5/00 ,  C08L53/00

    CPC分类号： C08G18/6287 ,  A61L27/18 ,  A61L29/06 ,  A61L31/06 ,  C08G18/0823 ,  C08G18/12 ,  C08G18/283 ,  C08G18/2865 ,  C08G18/289 ,  C08G18/5024 ,  C08G18/5039 ,  C08G18/6283 ,  C08G18/6795 ,  C08L75/04 ,  C08G18/3228

    摘要： Polymers whose surfaces are modified by endgroups that include amphipathic surface-modifying moieties. An amphipathic endgroup of a polymer molecule is an endgroup that contains at least two moieties of significantly differing composition, such that the amphipathic endgroup spontaneously rearranges its positioning in a polymer body to position the moiety on the surface of the body, depending upon the composition of the medium with which the body is in contact, when that re-positioning causes a reduction in interfacial energy. An example of an amphipathic surface-modifying endgroup is one that has both a hydrophobic moiety and a hydrophilic moiety in a single endgroup. For instance, a hydrophilic poly(ethylene oxide) terminated with a hydrophilic hydroxyl group is not surface active in air when the surface-modifying endgroup is bonded to a more hydrophobic base polymer. If the hydroxyl group on the oligomeric poly(ethylene oxide) is replaced by a hydrophobic methoxy ether terminus, the poly(ethylene oxide) becomes surface active in air, and allows the poly(ethylene oxide) groups to crystallize in the air-facing surface. In this example, immersion in water destroys the crystallinity as the poly(ethylene oxide) sorbs water and the hydrophobic methoxy group retreats below the surface of the polymer. Also disclosed are methods and articles of manufacture that make use of these polymers.

    摘要翻译： 其表面被包括两亲表面改性部分的端基修饰的聚合物。 聚合物分子的两亲端基是含有至少两个具有显着不同组成的部分的端基，使得两亲性端基在聚合物体中自发地重排其定位，以将该部分定位在身体的表面上，这取决于 当该重新定位导致界面能量降低时，与身体接触的介质。 两亲性表面改性端基的实例是在单个端基具有疏水部分和亲水部分的实例。 例如，当表面改性端基键合到更疏水的基础聚合物上时，用亲水羟基封端的亲水性聚（环氧乙烷）在空气中不是表面活性的。 如果低聚聚（环氧乙烷）上的羟基被疏水性甲氧基醚末端所代替，则聚（环氧乙烷）在空气中变得表面活性，并允许聚（环氧乙烷）基团在面向空气的表面中结晶 。 在该实施例中，当聚（环氧乙烷）吸附水和疏水性甲氧基在聚合物表面下方退缩时，浸入水中会破坏结晶度。 还公开了利用这些聚合物的方法和制品。

    Biosensor membrane material
    7.
    发明申请
    Biosensor membrane material 有权
    生物传感器膜材料

    公开(公告)号：US20060183871A1

    公开(公告)日：2006-08-17

    申请号：US11404528

    申请日：2006-04-14

    申请人： Robert Ward ,  Yuan Tian ,  W. Ward ,  Ellen Anderson ,  Jody House

    发明人： Robert Ward ,  Yuan Tian ,  W. Ward ,  Ellen Anderson ,  Jody House

    IPC分类号： C08G77/448 ,  C08G64/18

    CPC分类号： C08G64/18 ,  C08G77/448 ,  C08G77/458

    摘要： Embodiments of the present invention provide various multipolymers and permselective membranes for use with biosensors and other implantable medical devices and prostheses. Embodiments of the present invention may provide structural strength and integrity, and further may control the influx of glucose, oxygen and/or water. Embodiments of the present invention may, for example, minimize or reduce the influx of glucose by minimizing the percentage of hydrophilic segments, which in turn minimizes the percentage of water uptake and the degree of glucose transport.

    摘要翻译： 本发明的实施方案提供了用于生物传感器和其它可植入医疗装置和假体的各种多聚体和选择渗透膜。 本发明的实施方案可以提供结构强度和完整性，并且还可以控制葡萄糖，氧气和/或水的流入。 例如，本发明的实施方案可以通过使亲水段的百分比最小化来最小化或减少葡萄糖的流入，从而使吸水的百分比和葡萄糖转运的程度最小化。

    Purification of silicone containing compounds by supercritical fluid extraction
    8.
    发明申请
    Purification of silicone containing compounds by supercritical fluid extraction 失效
    通过超临界流体萃取法纯化含硅化合物

    公开(公告)号：US20050092680A1

    公开(公告)日：2005-05-05

    申请号：US10699417

    申请日：2003-10-31

    申请人： Shivkumar Mahadevan ,  Frank Molock ,  Robert Ward ,  Yuan Tian ,  Shanger Wang ,  James Serpilio

    发明人： Shivkumar Mahadevan ,  Frank Molock ,  Robert Ward ,  Yuan Tian ,  Shanger Wang ,  James Serpilio

    IPC分类号： C07F7/20 ,  C02F1/26

    CPC分类号： C08G77/34 ,  C07F7/20 ,  Y02P20/544

    摘要： The present invention relates to a process for the purification of silicone containing compounds via supercritical fluid extraction. Specifically, the present invention relates to a process comprising the steps of contacting at least one silicone containing compound with a supercritical fluid having a density of between about 0.2 and about 0.8 g/ml, decreasing said density so that two phases are formed a first phase comprising said at least one silicone containing compound and a second phase comprising at least one impurity and separating said second phase from said first phase.

    摘要翻译： 本发明涉及通过超临界流体萃取纯化含硅氧烷化合物的方法。 具体地说，本发明涉及一种方法，该方法包括以下步骤：使至少一种含硅氧烷的化合物与密度为约0.2至约0.8g / ml的超临界流体接触，降低所述密度，使得两相形成第一相 包括所述至少一种含硅氧烷化合物和包含至少一种杂质的第二相，并将所述第二相与所述第一相分离。

    Adjustable Segmental Distalization Appliance for Orthodontic Treatments
    9.
    发明申请
    Adjustable Segmental Distalization Appliance for Orthodontic Treatments 审中-公开

    公开(公告)号：US20180214249A1

    公开(公告)日：2018-08-02

    申请号：US15882381

    申请日：2018-01-29

    申请人： Robert Ward

    发明人： Robert Ward

    IPC分类号： A61C7/00

    摘要： An adjustable segmental distalization appliance for orthodontic treatments features elongated first and second components that cooperatively define a central body of the appliance spanning longitudinally between an anterior end of the first component and a distal end of the second component. First and second terminal heads are respectively carried at the anterior and distal ends and adapted for attachment to first and second teeth of a dental arch. The first and second components are arranged for selective longitudinal displacement relative to one another to adjust an overall length of the central body to adapt to a patient-specific mesial-distal distance between the first and second teeth of the dental arch. In one embodiment, one component is a tubular female component carrying a ratchet pawl, and the other component is an insertable male component with cooperating ratchet teeth for incremental extension of the central body.