Osmotically powered agent dispensing device with filling means
    42.
    发明授权
    Osmotically powered agent dispensing device with filling means 失效
    具有充气装置的动力驱动剂分配装置

    公开(公告)号:US3760984A

    公开(公告)日:1973-09-25

    申请号:US3760984D

    申请日:1971-09-29

    Applicant: ALZA CORP

    Inventor: THEEUWES F

    CPC classification number: B01D61/002 A61K9/0004 B01D61/005

    Abstract: A device is disclosed comprised of a wall formed of a material collapsable in response to mechanical force and surrounding a closed compartment for containing an agent, a dispensing passageway communicates with the compartment and the exterior of the device for dispensing agent therefrom, a filling passageway communicates with the exterior of the device and the compartment for filling the device, a layer of an osmotically effective solute is deposited on the collapsable wall''s outer surface, said solute capable of exhibiting an osmotic pressure gradient against an external fluid and increasing its volume as fluid diffuses by osmosis into the solute, an outer wall surrounding the layer of solute formed of a material having shape retaining properties, permeable to the fluid and substantially impermeable to solute, and wherein the filling passageway houses a material penetrable to a means for filling the compartment which material self closes on removal of the means to maintain the compartment in closed condition for subsequent collapsing thereof in response to mechanical or hydrostatic force generated by osmotic pressure arising in the solute layer, as fluid diffuses therein to increase its volume and generate forces that are exerted between the collapsable wall of the agent containing chamber and the more rigid outer semi-permeable wall, which collapsing force in turn dispenses an agent through the dispensing passageway when the compartment is charged with drug and the device is positioned in the environment of use.

    Abstract translation: 公开了一种装置,其包括由能够响应于机械力而可折叠并且围绕用于容纳试剂的封闭隔室的材料形成的壁,分配通道与该隔室和用于分配剂的装置的外部连通,填充通道连通 随着装置的外部和用于填充装置的隔室,一层渗透性有效的溶质沉积在可塌缩的壁的外表面上,所述溶质能够显示针对外部流体的渗透压梯度并随着流体扩散而增加其体积 通过渗透到溶质中,围绕溶质层的外壁由具有形状保持性质的材料形成,其具有可渗透的流体并且基本上不可渗透溶解,并且其中填充通道容纳可渗透到用于填充隔室的装置的材料, 材料自动关闭,以取消维护比较的手段 由于流体在其中扩散以增加其体积并且产生施加在药剂容纳室的可塌缩壁之间的力并且产生的作用力在闭合状态下随后塌陷,以随着溶质层中产生的渗透压产生的机械静力或静水力, 更刚性的外部半透水壁,当隔室装满药物并且该装置位于使用环境中时,该塌缩力又通过分配通道分配药剂。

    Polycondensation in poly(tetrafluorethylene) reactor
    43.
    发明授权
    Polycondensation in poly(tetrafluorethylene) reactor 失效
    聚(四氟乙烯)反应器中的聚合

    公开(公告)号:US3674744A

    公开(公告)日:1972-07-04

    申请号:US3674744D

    申请日:1970-02-24

    Applicant: ICI LTD

    CPC classification number: B01D19/0031 B01J4/04 C08G63/785

    Abstract: A process for the preparation of a high molecular weight polymer by a condensation process of a liquid reaction mixture wherein at least one volatile by-product is eliminated, characterized in that said condensation process is carried out in apparatus of such form and so operated that said reaction mixture being subjected to the condensation process has no free surface and removal of volatile product or products from said reaction mixture is effected by diffusion through at least a proportion of the wall of said apparatus which is permeable to said volatile product or products but not permeable to said reaction mixture or said polymer, said proportion of the wall which is permeable serving to separate said reaction mixture from a chemically inert gaseous fluid in which the partial pressure of the volatile byproduct, or of the volatile by-products, is continually maintained below the equilibrium partial pressure for the reaction mixture under the conditions of reaction.

    FUNCTIONAL FLUID GATE CONTROL SYSTEM
    45.
    发明申请

    公开(公告)号:US20200206692A1

    公开(公告)日:2020-07-02

    申请号:US16612105

    申请日:2018-05-15

    Abstract: The present disclosure discloses a functional fluid gating control system, which comprises a porous membrane and a functional fluid. The functional fluid at least partially infiltrates the porous membrane and cooperates to form a fluid gating pathway. The functional fluid and/or the porous membrane responds to at least one stimulus and undergoes a physical change or a chemical change to change the threshold pressure of the transport substance. A transport fluid being immiscible with the functional fluid is controlled to pass through the fluid gating system, and thus controllable transport and multiphase separation of materials are achieved. The stimulus of the present disclosure comprises a wide range of sources, and the stimulus responsiveness of the functional fluid and the porous membrane can be randomly and freely combined to adapt to multiple stimuli from complex external conditions and achieve intelligent controllability.

    Hydrogen transport membranes for dehydrogenation reactions
    46.
    发明授权
    Hydrogen transport membranes for dehydrogenation reactions 有权
    用于脱氢反应的氢传输膜

    公开(公告)号:US08900523B2

    公开(公告)日:2014-12-02

    申请号:US12009969

    申请日:2008-01-23

    Abstract: A method of converting C2 and/or higher alkanes to olefins by contacting a feedstock containing C2 and/or higher alkanes with a first surface of a metal composite membrane of a sintered homogenous mixture of an Al oxide or stabilized or partially stabilized Zr oxide ceramic powder and a metal powder of one or more of Pd, Nb, V, Zr, Ta and/or alloys or mixtures thereof. The alkanes dehydrogenate to olefins by contact with the first surface with substantially only atomic hydrogen from the dehydrogenation of the alkanes passing through the metal composite membrane. Apparatus for effecting the conversion and separation is also disclosed.

    Abstract translation: 将C2和/或高级烷烃转化为烯烃的方法是将含有C2和/或高级烷烃的原料与Al氧化物或稳定或部分稳定的Zr氧化物陶瓷粉末的烧结同质混合物的金属复合膜的第一表面接触 以及Pd,Nb,V,Zr,Ta和/或其合金或其混合物中的一种或多种的金属粉末。 烷烃通过与通过金属复合膜的烷烃的脱氢基本上仅与原子氢接触而与第一表面接触而脱氢成烯烃。 还公开了用于实现转换和分离的装置。

Patent Agency Ranking