Magnetic core coated inorganic ion adsorbent for removing Cs ions in radioactive wastewater and preparation method thereof
    1.
    发明授权
    Magnetic core coated inorganic ion adsorbent for removing Cs ions in radioactive wastewater and preparation method thereof 有权
    用于去除放射性废水中的Cs离子的磁芯涂覆的无机离子吸附剂及其制备方法

    公开(公告)号:US09586191B2

    公开(公告)日:2017-03-07

    申请号:US14428437

    申请日:2013-09-18

    摘要: The invention discloses a micron-grade magnetic core coated ferrocyanide adsorbent for removing Cs ions in radioactive wastewater and a preparation method thereof. The adsorbent takes magnetic Fe3O4 as a core, the surface is coated with a dense SiO2 single layer serving as a protective layer, and an active component is metal ion stabilized potassium ferrocyanide coated on the outer layer, wherein stabilized metal ions comprise Ti, Zn, Cu, Ni, Co, and Zr. The particle size of the adsorbent is 0.2-5 μm, the adsorbent in the outermost layer is conductive to improving the adsorption efficiency for Cs+ ions, and an external magnetic field is adopted for realizing solid-liquid phase separation. The preparation method comprises the following steps: coating a hydrated metal oxide of Ti, Zr or Co, Ni, Cu or Zn on the surface of Fe3O4SiO2 to form a composite magnetic material, wherein the hydrated oxide performs hydroxyl polymerization reaction with the surface of SiO2 to produce M—O—Si bonds to improve the bonding strength between M and the surface of SiO2; and finally reacting the composite magnetic material with a potassium ferrocyanide solution to form the required composite adsorbent, wherein the metal ions M achieve the effects of stabilizing the ferrocyanide and also achieve a bridge effect for bonding the ferrocyanide and the composite magnetic material together.

    摘要翻译: 本发明公开了一种用于去除放射性废水中的Cs离子的微米级磁芯涂层亚铁氰化物吸附剂及其制备方法。 吸附剂采用磁性Fe3O4为核心,表面涂覆有作为保护层的致密SiO 2单层,活性组分是金属离子稳定化的亚铁氰化钾,其外部层包含稳定的金属离子,其中Ti,Zn, Cu,Ni,Co和Zr。 吸附剂的粒径为0.2-5μm,最外层的吸附剂导电,提高Cs +离子的吸附效率,采用外部磁场实现固相分离。 制备方法包括以下步骤:在Fe3O4SiO2表面涂覆Ti,Zr或Co,Ni,Cu或Zn的水合金属氧化物,形成复合磁性材料,其中水合氧化物与SiO2表面进行羟基聚合反应 以产生M-O-Si键,以提高M与SiO2表面的结合强度; 最后使复合磁性材料与亚铁氰化钾溶液反应形成所需的复合吸附剂,其中金属离子M达到稳定亚铁氰化物的效果,并且还实现了将亚铁氰化物和复合磁性材料粘合在一起的桥接效应。

    Branched Polymers
    2.
    发明授权
    Branched Polymers 有权
    支链聚合物

    公开(公告)号:US08273833B2

    公开(公告)日:2012-09-25

    申请号:US12963170

    申请日:2010-12-08

    摘要: The present invention is directed to branched reactive water-soluble polymers comprising at least two polymer arms, such as poly(ethylene glycol), attached to a central aliphatic hydrocarbon core molecule through ether linkages. The branched polymers bear at least one functional group for reacting with a biologically active agent to form a biologically active conjugate. The functional group of the branched polymer can be directly attached to the aliphatic hydrocarbon core or via an intervening linkage, such as a heteroatom, -alkylene-, —O-alkylene-O—, -alkylene-O-alkylene-, -aryl-O—, —O-aryl-, (—O-alkylene-)m, or (-alkylene-O—)m linkage, wherein m is 1-10.

    摘要翻译: 本发明涉及包含至少两个聚合物臂(例如聚(乙二醇))的支链反应性水溶性聚合物,其通过醚键连接到中心脂族烃核心分子上。 支链聚合物具有至少一个用于与生物活性剂反应以形成生物活性缀合物的官能团。 支链聚合物的官能团可以直接连接到脂族烃核心上或通过插入键如杂原子, - 亚烷基 - , - - 亚烷基-O-, - 亚烷基-O-亚烷基 - , - 芳基 - O-,-O-芳基 - ,( - - 亚烷基 - )m或( - 亚烷基-O-)m键,其中m为1-10。

    Sterically Hindered Poly(ethylene glycol) Alkanoic Acids and Derivatives Thereof
    4.
    发明申请
    Sterically Hindered Poly(ethylene glycol) Alkanoic Acids and Derivatives Thereof 有权
    受阻的聚(乙二醇)烷酸及其衍生物

    公开(公告)号:US20110207896A1

    公开(公告)日:2011-08-25

    申请号:US13099965

    申请日:2011-05-03

    IPC分类号: C08G63/91

    摘要: The invention provides a sterically hindered polymers and conjugates formed therefrom that comprise a water-soluble and non-peptidic polymer backbone having at least one terminus covalently bonded to an alkanoic acid or alkanoic acid derivative prior to conjugation, wherein the carbon adjacent to the carbonyl group of the acid or acid derivative group has an alkyl or aryl group pendent thereto. The steric effects of the alkyl or aryl group allow greater control of the hydrolytic stability of polymer derivatives. The polymer backbone may be poly(ethylene glycol).

    摘要翻译: 本发明提供一种空间位阻聚合物和由其形成的共轭物,其包含水溶性和非肽性聚合物主链,其在共轭之前具有至少一个与链烷酸或链烷酸衍生物共价结合的末端,其中与羰基相邻的碳 的酸或酸衍生物基团具有与其相邻的烷基或芳基。 烷基或芳基的空间效应允许更好地控制聚合物衍生物的水解稳定性。 聚合物主链可以是聚(乙二醇)。

    MULTI-ARM POLYMER PRODRUGS
    6.
    发明申请
    MULTI-ARM POLYMER PRODRUGS 有权
    多臂聚合物原料

    公开(公告)号:US20100152414A1

    公开(公告)日:2010-06-17

    申请号:US12709800

    申请日:2010-02-22

    IPC分类号: C08G73/10

    摘要: Provided herein are water-soluble prodrugs. The prodrugs of the invention comprise a water-soluble polymer having three or more arms, at least three of which are covalently attached to an active agent, e.g., a small molecule. The conjugates of the invention provide an optimal balance of polymer size and structure for achieving improved drug loading, since the conjugates of the invention possess three or more active agents releasably attached to a multi-armed water soluble polymer. The prodrugs of the invention are therapeutically effective, and exhibit improved properties in-vivo when compared to unmodified parent drug.

    摘要翻译: 本文提供水溶性前药。 本发明的前药包含具有三个或更多个臂的水溶性聚合物,其中至少三个共价连接到活性剂例如小分子上。 由于本发明的共轭物具有三种或更多种可释放地连接到多臂水溶性聚合物上的活性剂,本发明的共轭物提供聚合物尺寸和结构的最佳平衡以实现改善的药物负载。 与未修饰的母体药物相比,本发明的前药在治疗上是有效的,并且在体内表现出改善的性质。

    Hydrolytically Degradable Carbamate Derivatives of Poly(Ethylene Glycol)
    7.
    发明申请
    Hydrolytically Degradable Carbamate Derivatives of Poly(Ethylene Glycol) 有权
    聚(乙二醇)的水解可降解的氨基甲酸酯衍生物

    公开(公告)号:US20100105946A1

    公开(公告)日:2010-04-29

    申请号:US12559320

    申请日:2009-09-14

    IPC分类号: C07C69/63

    摘要: Poly(ethylene glycol) carbamate derivatives useful as water-soluble pro-drugs are disclosed. These degradable poly(ethylene glycol) carbamate derivatives also have potential applications in controlled hydrolytic degradation of hydrogels. In such degradable hydrogels, drugs may be either trapped in the gel and released by diffusion as the gel degrades, or they may be covalently bound through hydrolyzable carbamate linkages. Hydrolysis of these carbamate linkages releases the amine drug at a controllable rate as the gel degrades.

    摘要翻译: 公开了可用作水溶性前体药物的聚(乙二醇)氨基甲酸酯衍生物。 这些可降解的聚(乙二醇)氨基甲酸酯衍生物在水凝胶的可控水解降解中也具有潜在的应用。 在这种可降解的水凝胶中,当凝胶降解时,药物可以被捕获在凝胶中并通过扩散释放,或者它们可以通过可水解的氨基甲酸酯键共价结合。 当凝胶降解时,这些氨基甲酸酯键的水解以可控的速率释放胺药物。

    Hydrolytically degradable polymers and hydrogels made therefrom
    9.
    发明授权
    Hydrolytically degradable polymers and hydrogels made therefrom 有权
    水解可降解的聚合物和水凝胶

    公开(公告)号:US07259224B2

    公开(公告)日:2007-08-21

    申请号:US11377973

    申请日:2006-03-17

    IPC分类号: C08G64/00

    摘要: A water soluble polymer is provided having two or more oligomers linked to each other by hydrolytically degradable carbonate linkages. The polymer can be hydrolytically degraded into oligomers (e.g., oligomers of ethylene oxide) under physiological conditions. The polymer can be conjugated to biologically active agents such as proteins or peptides to impart improved water solubility, reduced immunogenicity, reduced rate of renal clearance, and increased stability. The polymer is useful in making hydrolytically degradable hydrogels which can be used in drug delivery and related biomedical applications. On example of the polymer is a poly (ether carbonate) of the formula X—O—[(—CH2CH2-O-)n—CO2—]n—(CH2CH2))n -y where X and Y are independently H, alkyl, alkenyl, aryl, or a reactive moiety, and at least one of X and Y is a reactive moiety.

    摘要翻译: 提供了具有两个或多个通过可水解降解的碳酸酯键相互连接的低聚物的水溶性聚合物。 在生理条件下,聚合物可以水解降解成低聚物(例如环氧乙烷的低聚物)。 聚合物可以与生物活性剂如蛋白质或肽缀合以赋予改善的水溶性,降低的免疫原性,降低的肾清除率和增加的稳定性。 该聚合物可用于制备可用于药物递送和相关生物医学应用的水解可降解水凝胶。 聚合物的实例是式XO的聚(醚碳酸酯) - [( - CH 2 CH 2 -O - ) - N - -CO 2 - - - - - (CH 2 CH 2)) - (CH 2 CH 2) -y其中X和Y独立地是H,烷基,烯基,芳基或反应性部分,X和Y中的至少一个是反应性部分。