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WO/2023/210370A1 |
Provided are a purification method and purification apparatus that deplete the metal impurities in an organic solvent. This organic solvent purification method is a purification method that depletes the metal impurities in an organic sol...
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WO/2023/180174A1 |
The present invention relates to a method for the elution of aluminum ions and/or zinc ions of polymers containing aminomethylphosphonic acid groups.
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WO/2023/149402A1 |
The present invention provides a water-soluble chelating polymer which is capable of quickly trapping trace amounts of heavy metal ions and reducing the amount of the heavy metal ions to the ppm level or less in a short period of time.ã€...
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WO/2023/131958A1 |
The invention relates to a method of disinfecting water, comprising adding nonindigenous cupric ions to the water and applying voltage across copper-containing electrodes in contact with the water to generate an antimicrobial effect. The...
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WO/2023/102060A1 |
The present disclosure describes a method for the recovery of metal ions from an aqueous metal-chelator solution. Here, the metal ions are the desired product. In some embodiments, the method of the present disclosure includes three proc...
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WO/2023/074442A1 |
Provided are a method for producing a lithium-containing solution and a method for producing lithium hydroxide that make it possible to raise the purity of a lithium compound finally obtained.　This method for producing a lithium-contai...
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WO/2023/062925A1 |
The present invention provides a purification method that can provide an acid solution in which the impurity concentration has been further reduced. The present invention provides an acid solution purification method wherein a purified i...
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WO/2022/258939A1 |
Use of a separation material comprising picolinic acid ester or picolinic acid amide functional groups immobilised on a solid support to selectively remove Ni from an aqueous solution.
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WO/2022/235769A1 |
A metal-chelating resin includes (a) a compound represented by Formula (I) or a stereoisomeric form thereof or a salt thereof, wherein R1, R2, R3, R4, Ra, Rb, Rc and Rd are as defined herein; and (b) an organic polymer resin having at le...
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WO/2022/235768A1 |
A metal-chelating resin includes (a) a compound represented by Formula (I), or a stereoisomeric form thereof or a salt thereof, wherein R1, R2, R3, R4, Ra, Rb, Rc and Rd are as defined herein; and (b) an organic polymer resin having at l...
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WO/2022/209233A1 |
Provided are a dry ion exchange resin manufacturing method and manufacturing device with which it is possible to obtain a dry ion exchange resin having a reduced moisture content and metal content, and a treated liquid purifying method a...
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WO/2022/209391A1 |
Provided is a method for purifying a non-aqueous liquid in a simple and cost-efficient manner, without requiring a large amount of the non-aqueous liquid, by using an ion exchange resin having a reduced water content. The method for puri...
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WO/2022/209392A1 |
Provided is a method for purifying a hydrolyzable organic solvent, the method making it possible to reduce the metal impurity concentration in the hydrolyzable organic solvent while suppressing the generation of acids. There is used a me...
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WO/2022/091605A1 |
A method for purifying an organic solvent characterized by having an ion exchange treatment step for bringing an organic solvent to be treated into contact with an ion exchange resin and a distillation step for distilling the treated liq...
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WO/2022/031625A1 |
The chelation crosslinked polymers include a polymer backbone having one or more chelation crosslinking group(s) at least partially bonded to one or more cation(s). The chelation crosslinking groups may be within a polymer backbone and/o...
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WO/2021/081629A1 |
In order to reduce the contamination of scandium oxide products, the present disclosure provides a process for removing at least one metal contaminant from a scandium (Sc) concentrate. The process is based on contacting the Sc concentrat...
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WO/2021/059941A1 |
For recovering scandium from an acidic solution containing at least scandium and chromium via an ion-exchange treatment using a chelate resin, the present invention provides a method for efficiently concentrating the scandium while suppr...
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WO/2021/059940A1 |
The present invention provides a method for recovering scandium from an acidic solution, which contains at least scandium, nickel and chromium, through an ion exchange treatment using a chelating resin, said method recovering high-purity...
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WO/2020/250202A1 |
The present invention relates to a method for removing metals from a food matrix, which involves preparing a mixture that comprises solvents and a chelating agent, adding a food matrix and the aforementioned mixture to a reaction tank in...
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WO/2020/217911A1 |
The present invention provides a method for purifying an organic solvent, characterized by having a first processing step for bringing an organic solvent to be processed into contact with an H-form cation exchanger (1), and a second proc...
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WO/2020/180199A1 |
A receptor for the simultaneous removal of oxoanions and their counterions from aqueous phase, particularly containing radioactive wastes, containing amide groups specifically coordinating the oxoanions, as well as moieties specifically ...
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WO/2020/112428A1 |
A method for producing an ion exchange resin. The method comprises steps of: (a) providing a basic ion exchange resin in the acidic form which comprises amino polyol groups and has a volume % swell from 15 to 30% upon conversion from the...
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WO/2020/069558A1 |
A method (10) for the processing of lithium containing brines, the method comprising the method steps of: (i) Passing a lithium containing brine (12) to a filtration step (14) to remove sulphates; (ii) Passing a product (16) of step (i) ...
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WO/2020/021327A1 |
The invention provides chemical compounds for binding to a liquid phase cation having the formula R1-SO2-S-R2-SH, wherein R1 comprises a support molecule, such as a polymer, and R2 comprises an alkyl. The polymer may be a crosslinked, po...
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WO/2020/013070A1 |
The present invention realizes a technique that makes it possible to reduce the amount of acidic liquid used for acidic liquid regeneration that includes adsorption agent regeneration. This regeneration device for a bath liquid regenerat...
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WO/2019/238625A1 |
The invention relates to a method for producing amido-methylated vinyl-aromatic bead polymers.
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WO/2019/207995A1 |
A method for removing a metal in a liquid, whereby a metal in a liquid to be treated is removed by contacting the liquid to be treated with an H-type chelate resin mixed with an anion exchange resin, characterized in that the anion excha...
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WO/2019/163285A1 |
Provided is a more economical method for obtaining a concentrated scandium solution from an acidic solution containing scandium by means of an ion exchange treatment that uses a chelating resin. This method is suppressed in deterioration...
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WO/2019/163499A1 |
Provided is a method for producing a chelate resin, wherein a highly pure treatment liquid can be obtained by reducing the amount of metal impurities in a to-be-treated liquid containing metal impurities. The method for producing a chela...
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WO/2019/138305A1 |
A filter includes a porous molding, the porous molding being a sintered product of mixed powder containing dry gel powder including an ion exchange resin and thermoplastic resin powder, or a swelled body of the sintered product. When wat...
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WO/2019/087762A1 |
Provided are a method and system for recovering an acidic gas whereby metal ions such as iron ion, a heavy metal ion, etc. in an amine absorbing solution can be quantified within a short period of time at a high accuracy and a factor whi...
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WO/2019/013155A1 |
The present invention addresses the problem of providing a filter unit used for refining in order to obtain a chemical having excellent defect control performance. The present invention also addresses the problem of providing a refining ...
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WO/2018/221502A1 |
The present invention is provided with: a resin structure (2) having a net-like compartment wall (4) that form numerous movable regions (3); and at least one adsorbent material (1) encapsulated in the movable regions (3) of the resin str...
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WO/2018/174148A1 |
Provided is a method for smelting a metal oxide ore for obtaining a metal sulfide, wherein the method makes it possible to efficiently recover a fine metal sulfide included in an overflow solution and reduce the recovery cost of metal co...
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WO/2018/162396A1 |
Cross-linked copolymers in the form of dense or porous membranes (films) and their application as colorimetric sensors of divalent metals and/or oxidising anions in aqueous media, such as for example in drinking and industrial water, and...
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WO/2018/116274A1 |
The invention is directed to a body comprising oxides of lanthanides, in particular holmium oxide (Ho2O3), which are supported on a sulphur containing carbon based particle and to a process for producing said body.
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WO/2018/096700A1 |
Provided is a system for producing ultrapure water, said system being provided with a pre-treatment system, a primary purification system, and a secondary purification system in the stated order, wherein: the primary/secondary pure water...
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WO/2018/043462A1 |
The present invention relates to an ion exchange fiber which is provided with a core fiber and an ion exchange layer that is arranged around the core fiber and contains a crosslinked polymer compound having an ion exchange group, and whi...
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WO/2018/015693A1 |
A temperature-regenerated hydrophobic liquid composition comprising an extracting molecule of a non-alkaline cationic species, a solvating molecule of a complimentary anionic species and a fluidizing agent, wherein said composition is ch...
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WO/2017/182650A1 |
The invention relates to a water processing device for removing micro-pollutants, in particular medicaments, from water. Said device comprises a housing (48a – 48d) and at least one absorption unit (18a – 18d) which is arranged in th...
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WO/2017/126355A1 |
To develop: an iminodiacetic acid type chelate resin which is able to be easily and efficiently produced and is capable of efficiently adsorbing and separating metal ions; and a method for producing this iminodiacetic acid type chelate r...
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WO/2017/094308A1 |
Provided is a sulfurizing agent removal method that effectively removes dilute sulfurizing agents such as hydrogen sulfide from large volume solutions more efficiently than in the past. This sulfurizing agent removal method is a method f...
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WO/2017/085312A1 |
The invention relates to an organic material which includes a solid polymer substrate onto which molecules having the following general formula (I) are grafted: Formula (I) in which: m = 0, 1 or 2; R1 and R2 = a saturated or unsaturated,...
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WO/2017/046625A1 |
The present invention relates to a method of preparing a solid-phase bound multimeric chelator where the chelator is coupled via one carboxylic group. The chelator consists of aminopolycarboxylic acid, connected to other aminocarboxylic ...
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WO/2017/013110A1 |
The present invention relates to aluminum-doped, iminoacetic acid group-containing chelate resins, to a method for producing aluminum-doped, iminoacetic acid group-containing chelate resins, and to a device which contains at least one al...
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WO/2017/002871A1 |
The purpose of the present invention is, in a reaction method in which a liquid that includes a reaction target is reacted by contact with a granular porous body, to reveal the relationship between contact time and optimal granule sizes,...
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WO/2016/143876A1 |
Provided is a substance separation membrane (in particular, gas separation membrane) obtained using a ligand compound capable of producing the MOP. Also provided is a single-hole or multi-hole coordination polymer which comprises metal i...
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WO/2016/102491A1 |
The invention relates to a method for producing amino methylated bead polymerizates using condensed formaldehydes and carboxylic acid anhydrides.
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WO/2016/102487A1 |
The invention relates to a method for producing amino methylated bead polymerizates from N-carboxylic acid methylphthalimide esters, said polymers being used as anion exchangers or can be transformed further into chelate resins.
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WO/2016/037181A1 |
The present invention relates to metal complexes and methods of synthesizing the metal complexes. The invention is further directed to pharmaceutical and/or dietary supplement composition comprising compounds synthesized as described her...
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