Process for the removal of metals from solution
    22.
    发明授权
    Process for the removal of metals from solution 失效
    从溶液中除去金属的工艺

    公开(公告)号:US4167481A

    公开(公告)日:1979-09-11

    申请号:US818060

    申请日:1977-07-22

    Abstract: Several metal ions, such as mercury, cadmium, copper, zinc, nickel and cobalt, may be removed from waste waters and similar solutions by treating such solutions with a cation exchanger in the presence of a polyamine. A treatment with clay minerals such as bentonite or montmorillonite in the presence of tetraethylenepentamine is preferred. The solution may be first combined with polyamine and then contacted with the cation exchanger, but in a preferred embodiment, the polyamine and cation exchanger are combined first to form a solid adsorbent and then contacted with the solution.

    Abstract translation: 通过在多胺的存在下用阳离子交换剂处理这些溶液,可以从废水和类似溶液中除去几种金属离子,如汞,镉,铜,锌,镍和钴。 优选在四亚乙基五胺的存在下用粘土矿物如膨润土或蒙脱石处理。 该溶液可以首先与多胺结合,然后与阳离子交换剂接触,但在优选的实施方案中,首先将多胺和阳离子交换剂混合以形成固体吸附剂,然后与溶液接触。

    Recovery of Mg.sup.++  from brines
    23.
    发明授权
    Recovery of Mg.sup.++ from brines 失效
    回收Mg {hu {30 {30 {{{{{

    公开(公告)号:US4116857A

    公开(公告)日:1978-09-26

    申请号:US812542

    申请日:1977-07-05

    CPC classification number: B01J47/006 B01J41/08 C01F7/002

    Abstract: Magnesium values are selectively recovered from salt brines, even salt brines which contain competing ions such as Li.sup.+, Ca.sup.++, and Sr.sup.++, by contacting the brine with an anion exchange resin which has dispersed therein a microcrystalline structure of the formula MgX.sub.2.2Al(OH).sub.3, where X is a halide.

    Abstract translation: 通过使盐水与分散有式MgX2.2Al(OH)的微晶结构的阴离子交换树脂接触,从盐盐水,甚至含有竞争离子的盐盐,即Li +,Ca ++和Sr ++的盐水中选择性地回收镁值, 3,其中X是卤化物。

    High performance ion exchange composition
    24.
    发明授权
    High performance ion exchange composition 失效
    高效离子交换组成

    公开(公告)号:US4101460A

    公开(公告)日:1978-07-18

    申请号:US593345

    申请日:1975-07-07

    CPC classification number: B01D15/361 B01J20/3221 B01J47/006 C08J7/04

    Abstract: An ion exchange composition comprising an insoluble substrate of a synthetic resin having ion exchanging sites at least on its available surface; and a finely divided, insoluble material comprising synthetic resin particles of from about 0.1 to about 5 microns median diameter (with respect to volume) having, at least on their outer surfaces, ion exchanging sites which attract the ion exchanging sites of the substrate, irreversibly attached as a monolayer to the available surface of the substrate. The composition is used for removal and separation of ions, and is especially useful in liquid ion exchange chromatography. For example, a chromatographic separation of halide ions is effected with high speed and resolution by contacting an aqueous solution thereof with a bed of the ion exchange composition which consists of surface sulfonated resin beads of a styrene-divinylbenzene copolymer to the surface of which is irreversibly attached a monolayer of quaternary ammonium-bearing styrene-divinylbenzene copolymer resin particles in the hydroxy form, and then eluting the bed with an aqueous sodium hydroxide solution.

    Abstract translation: 一种离子交换组合物,其包含至少在其可用表面上具有离子交换位点的合成树脂的不溶性底物; 和细碎的不溶性材料,其包含约0.1至约5微米中等直径(相对于体积)的合成树脂颗粒,其至少在其外表面上具有吸引衬底的离子交换位点的离子交换位点,不可逆地 作为单层附着到基材的可用表面。 该组合物用于离子的去除和分离,并且在液体离子交换色谱中特别有用。 例如,通过使其水溶液与由苯乙烯 - 二乙烯基苯共聚物的表面磺化树脂珠组成的离子交换组合物的床接触,使其卤化物离子的色谱分离以高速和分辨率进行,其表面不可逆地 将含有羟基的季铵含量苯乙烯 - 二乙烯基苯共聚物树脂颗粒单层,然后用氢氧化钠水溶液洗脱床。

    Modified anion exchange process
    26.
    发明授权
    Modified anion exchange process 失效
    改性阴离子交换过程

    公开(公告)号:US5472616A

    公开(公告)日:1995-12-05

    申请号:US143489

    申请日:1993-10-27

    CPC classification number: B01J41/046 B01J47/006

    Abstract: The invention is for a process of removing anions from an organic solution, especially one having base labile components. The process comprises modifying an anion exchange resin by treatment with a solution of a source of anions less basic than the hydroxyl anion and contacting said modified ion exchange resin with an organic solution containing anions. The process is especially useful for treating photoresist compositions.

    Abstract translation: 本发明涉及从有机溶液中除去阴离子的方法,特别是具有碱不稳定组分的阴离子。 该方法包括通过用比羟基阴离子碱性低的阴离子溶液处理并使所述改性离子交换树脂与含有阴离子的有机溶液接触来改性阴离子交换树脂。 该方法对于处理光致抗蚀剂组合物特别有用。

    Process for recovering silver from photographic chemical effluent
    27.
    发明授权
    Process for recovering silver from photographic chemical effluent 失效
    从摄影化学废液中回收银的工艺

    公开(公告)号:US5294652A

    公开(公告)日:1994-03-15

    申请号:US19287

    申请日:1993-02-18

    Inventor: Norman B. Rainer

    CPC classification number: B01J47/007 B01J41/085 B01J45/00 B01J47/006

    Abstract: A process for absorbing silver from photographic hypo solutions involves passing the hypo solution through a bed consisting of a multitude of a sponge product confined within a vessel. The sponge product is derived from an open-celled cellulosic sponge into which there has been incorporated 30% to 80% by weight of a polymer produced by the thermal interaction of polyethyleneimine (PEI) with a polycarboxylic acid. The polymer further contains an activating multivalent cation and between 90% and 300% water. Silver is eluted from the sponge product employing aqueous solutions of a complexing agent such as an ammonium compound or a cyanide compound. Following a water wash, the bed of sponge product is ready for its next cycle of silver absorption.

    Abstract translation: 从照相底层溶液中吸收银的方法包括使次溶液通过由限制在容器内的大量海绵产品组成的床。 海绵产品来源于开孔的纤维素海绵,其中掺入30%至80%重量的通过聚乙烯亚胺(PEI)与多元羧酸的热相互作用产生的聚合物。 聚合物还含有活化多价阳离子和90%至300%的水。 使用络合剂如铵化合物或氰化物化合物的水溶液,从海绵产品中洗脱银。 水洗后,海绵产品床准备下一次银吸收循环。

    Tracer for circulation determinations
    30.
    发明授权
    Tracer for circulation determinations 失效
    示踪剂用于循环测定

    公开(公告)号:US4505888A

    公开(公告)日:1985-03-19

    申请号:US498867

    申请日:1983-05-27

    CPC classification number: A61K51/1282 A61K51/1251 B01J47/006 A61K2123/00

    Abstract: An improved tracer particle is described comprising an ion exchange core having a polymer coating thereon, the coated ion exchange core having a reaction site capable of reacting with a compound containing an oxirane group, said coated ion exchange core having been treated with a compound containing an oxirane group to react with said coated ion exchange core causing an increase in mass of the tracer particle. Preferably, the ion exchange core is labelled with a radionuclide. These particles have improved characteristics including improved stability against leaching and improved handling properties. Such particles are useful in circulatory determinations involving the injection of the particles as a suspension in a physiologically acceptable carrier or medium into the circulatory system of animals.

    Abstract translation: 描述了一种改进的示踪剂颗粒,其包含其上具有聚合物涂层的离子交换核心,所述涂覆的离子交换核心具有能够与含有环氧乙烷基团的化合物反应的反应位点,所述涂覆的离子交换核心已经用含有 环氧乙烷基团与所述涂覆的离子交换核心反应,导致示踪剂颗粒的质量增加。 优选地,离子交换核心用放射性核素标记。 这些颗粒具有改进的特性,包括提高对浸出的稳定性和改进的处理性能。 这种颗粒可用于循环测定,包括将颗粒作为悬浮液注入生理学上可接受的载体或介质进入动物的循环系统。

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