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JPS59102805A |
PURPOSE: To adsorb and to remove silver contained in hydrochloric acid effectively and almost completely, by bringing silver-containing hydrochloric acid into contact with a chelate resin containing a dithiocarbamate group. CONSTITUTION:...
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JPS5924856B2 |
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JPS5921912B2 |
A process is disclosed for sequestering metal ions by treating said ions with a compound of the formula: wherein R' is selected from the group consisting of -OH, alkyloxy and aryloxy; and R is selected from the group consisting of wherei...
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JPS5921932B2 |
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JPS5915710B2 |
PURPOSE:To remove heavy metal at a low cost from intended solution through treatment using a polyalkylene polyamin type chelate resin in the presence of alkalimetal salt or alkaliearth metal salt.
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JPS5915711B2 |
PURPOSE:To reduce cheaply and remarkably heavy metal adsorption equilibrium concn. without being affected by coexisting ions, by using a chelate resin made of reaction product of a resin and a cpd. each having a prim. or sec. amino group...
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JPS5959287A |
A composition containing thiolate for the removal of heavy metal ions from dilute aqueous solutions, characterized in that the composition is a sorption complex of a thiolate with two or more -SMe- groups (wherein Me represents alkali or...
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JPS5951938A |
There are provided magnetic and non-magnetic agarose and agar polyaldehyde beads with diameters ranging from 40 microns up to 1 cm, and processes for the synthesis of such beads. The polyaldehyde compounds e.g. polyacrolein, polymethacro...
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JPS593558B2 |
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JPS593405B2 |
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JPS593220B2 |
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JPS591090B2 |
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JPS5857223B2 |
Metal ions may be scavenged from solution by means of a complexing agent comprising an inorganic substrate, such as a clay mineral, with covalent organic molecules, such as onium compounds, chemically bonded to the substrate, the covalen...
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JPS5856392B2 |
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JPS58201804A |
PURPOSE: To obtain the titled novel styrenic resin capable of adsorbing a heavy metal ion selectively, having improved selectivity and exchange capacity especially for ferric ion and uranyl ion, by reacting a specific styrenic resin with...
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JPS5850138B2 |
New chelate exchange resins capable of selective recovery of copper, nickel, and other valuable metals from an acidic aqueous leach liquor are prepared by reacting a crosslinked haloalkyl polymer matrix resin (I) with certain aminopyridi...
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JPS58186436A |
PURPOSE: To obtain an adsorbent which adsorbs uranium selectively from sea water, has a high rate of adsorption and has excellent durability by forming the uranium adsorbent of a polymer of a porous and huge network structure having a ph...
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JPS58180238A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS58162636A |
PURPOSE: To provide a polyimide composed of specific two kinds of imide structure units, having excellent heat resistance, capable of forming chelate, and usable stably even at a high temperature when used as a metallic ion adsorbent. CO...
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JPS5843143B2 |
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JPS58157824A |
PURPOSE: To provide a polyamide-imide composed of an amideimide unit and an amide unit each having respective specific structure, as recurring units, usable stably as a metallic ion adsorbent even at a high temperature, having excellent ...
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JPS58151435A |
PURPOSE: To recover noble metals efficiently with high purity in a method for refining and recovering noble metals coexisting with heavy metals in liquid, by treating the liquid which is beforehand removed of the heavy metals with chelat...
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JPS5840952B2 |
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JPS58143845A |
PURPOSE: To provide an ion exchange resin capable of being used stably at a high temp., obtained by constituting linear polyimide containing an imide unit and a carboxylated imide unit shown by specific formulae as recurring units. CONST...
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JPS5837014B2 |
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JPS58135139A |
PURPOSE: To separate Pd efficiently even in case an aqueous solution exists together with a poor metal, by bringing the aqueous solution containing Pd into contact with a chelate-forming resin containing an iminodiacetate group, adsorbin...
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JPS5836606B2 |
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JPS58125616A |
PURPOSE: To separate and enrich a desorbing solution effectively and obtain uranium of high purity, by treating the desorbed solution of the uranium prepared by using a carbonate as a desorbing agent with a strongly basic anion exchange ...
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JPS5834180B2 |
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JPS5831218B2 |
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JPS58101108A |
PURPOSE: To obtain readily and economically titled resin of outstanding hydrophilic nature, having specifically adsorptive ability for boron, by the resinification of a phenolic compound with an aminopolyalcohol group introduced in its n...
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JPS5899122A |
PURPOSE: To manufacture a concd. U soln. for a yellow cake by passing a soln. contg. desorbed U through a strongly basic anion exchange resin to allow the U to be adsorbed on the resin, eluting the adsorbed U with an NaCl soln. and an HC...
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JPS58500857A |
N-hydroxyethylated macrocyclic polyamines of the formula in which X is O or N(CH2CH2OH), and each of Y<1> and Y<2>, wich are equal or different, are with the proviso that X is different from N(CH2CH2OH) when both Y<1> and Y<2> are -CH2-C...
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JPS5825082B2 |
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JPS5824177B2 |
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JPS5823334B2 |
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JPS5823137B2 |
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JPS5821908B2 |
Process for the preparation of pure aromatic o-hydroxy-carboxylic acid aryl amides by condensing an aromatic o-hydroxy-carboxylic acid with an aryl amine in the presence of phosphorus chlorides in an organic solvent or diluent, which pro...
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JPS5820964B2 |
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JPS5817783B2 |
Hetero-macrocyclic compound coated on the surface of a solid comprising a reaction mixture of (a) hetero-macrocylic compound having at least one amino group in the molecule and (b) a compound selected from the group consisting of an epox...
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JPS5849629A |
Weakly basic ion exchange resins are used to remove iron compounds in anhydrous or substantially anhydrous organic systems such as phenolic process streams. The resins may be either in the form of a weak salt such as the amine hydrochlor...
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JPS5814269B2 |
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JPS5810401B2 |
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JPS585700B2 |
1503315 Removal of heavy metals and transition metals from solution BRITISH PETROLEUM CO Ltd 18 April 1975 [28 May 1974] 23585/74 Headings C1A and C1C [Also in Division C3] A process for the removal of heavy metals and transition metals ...
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JPS585172B2 |
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JPS581639B2 |
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JPS58444B2 |
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JPS57205313A |
PURPOSE: To effectively remove metallic ions by placing the 1st tower packed with a chelating resin or a weakly acidic cation resin and the 2nd tower packed with the chelating resin, feeding brine to both the towers in series to remove m...
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JPS5756510B2 |
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JPS5749561B2 |
Copolymers made from alpha -hydroxyacrylic acid and acrylic acid. The copolymers contain between 9 and 85 mol percent of acrylic acid and have a specific viscosity within the range 0.05 to 1.0, determined on a 1 weight percent solution o...
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