公开(公告)号：US20230356208A9

公开(公告)日：2023-11-09

申请号：US17248839

申请日：2021-02-10

Applicant: II-VI Delaware, Inc

Inventor： Wen-Qing Xu ,  Vincent D. Mattera, JR. ,  Marie Ysabel Abella ,  Gomer M. Abrenica ,  Shailesh Patkar

IPC: B01J39/05 ,  C22B59/00 ,  B01J49/06 ,  C22B3/38 ,  B01J39/16 ,  B01J49/53 ,  B01J20/32 ,  B01J20/22 ,  C01F17/10 ,  B01J47/016 ,  B01J47/011 ,  B01J39/18 ,  B01J47/02 ,  C22B3/42

CPC classification number: B01J39/05 ,  C22B59/00 ,  B01J49/06 ,  C22B3/0068 ,  B01J39/16 ,  B01J49/53 ,  B01J20/321 ,  B01J20/22 ,  B01J20/3244 ,  C01F17/10 ,  B01J47/016 ,  B01J47/011 ,  B01J39/18 ,  B01J47/02 ,  C22B3/42 ,  Y02P10/20

Abstract: A composite extractant-enhanced polymer resist comprising an extractant and a polymer resin for direct extraction of valuable metals such as rare earth metals, and more specifically, scandium, Born an acid-leaching slurry and/or acid-leaching solution in which ferric ions are not required to be reduced into ferrous ions. The extractant may be cationic, non-ionic, or anionic. More specifically, the extractant di(2-ethylhexyl)phosphoric acid may be used. The polymer resin may be non-functional or have functional groups of sulfonic acid, carboxylic acid, iminodiacetic acid, phosphoric acid, or amines. The composite extractant-enhanced polymer resin may be used for extraction of rare earth metals from acid-leaching slurries or solutions.

公开(公告)号：US20230320386A1

公开(公告)日：2023-10-12

申请号：US18043381

申请日：2021-08-31

Applicant: West Invest SA

Inventor： Eric Reynaud ,  Jacques Meurisse ,  Stanislas Baudouin

IPC: A23L2/78 ,  A23L2/02 ,  A23L2/80 ,  B01J41/07 ,  B01J39/20 ,  B01J39/05 ,  B01J47/026

CPC classification number: A23L2/78 ,  A23L2/02 ,  A23L2/80 ,  B01J41/07 ,  B01J39/20 ,  B01J39/05 ,  B01J47/026

Abstract: It is disclosed orange juice products with reduced acidity, a deacidification system and a process for deacidifying orange juices comprising eluting the orange juice to be deacidified on a weak anion exchange resin to lead to a deacidified orange juice after elution; wherein the orange juice to be deacidified has an initial pH (pHi) and is eluted on said resin at a rate (BV/h) such that the deacidified orange juice has a pH (pHd) meeting the criteria: [pHi+(0.1-1)]

公开(公告)号：US11725078B2

公开(公告)日：2023-08-15

申请号：US16893577

申请日：2020-06-05

Applicant: MARUZEN PETROCHEMICAL CO., LTD.

Inventor： Tomohiro Masukawa ,  Ryo Fujisawa

IPC: B01J39/05 ,  C08G63/90 ,  C08G63/66 ,  G03F7/004 ,  G03F7/039

CPC classification number: C08G63/90 ,  B01J39/05 ,  C08G63/66 ,  G03F7/0045 ,  G03F7/0392

Abstract: [Problem to be Solved]
To Provide a method for producing an acid-decomposable polymer having a reduced metal ion content, which suppresses decomposition and deprotection of the acid-decomposable polymer.
[Means to Solve the Problem]
The method for producing an acid-decomposable polymer according to the present invention comprises the steps of:



preparing a polymer solution comprising an acid-decomposable polymer;
washing an acidic cation exchanger with an organic solvent until the water content in the organic solvent discharged from the acidic cation exchanger falls to 400 ppm or less; and
passing the polymer solution through the washed acidic cation exchanger to reduce the metal ion content of the polymer.

公开(公告)号：US20230204478A1

公开(公告)日：2023-06-29

申请号：US18166738

申请日：2023-02-09

Applicant: Waters Technologies Corporation

Inventor： Bonnie A. Alden ,  Kenneth Berthelette ,  Jon Finch ,  Donna Osterman ,  Thomas Swann ,  Thomas H. Walter

IPC: G01N1/40 ,  B01D15/42 ,  B01D15/36 ,  B01J39/26 ,  B01J39/05 ,  B01D15/32 ,  B01D15/38 ,  G01N33/92

CPC classification number: G01N1/405 ,  B01D15/426 ,  B01D15/362 ,  B01J39/26 ,  B01J39/05 ,  B01D15/327 ,  B01D15/3847 ,  G01N33/92 ,  G01N2030/062

Abstract: In various aspects, the present disclosure pertains to methods of performing a sample enrichment procedure, which comprise: adding a sample fluid that comprises at least one phospholipid and at least one target analyte to a sorbent that comprises a hydrophobic component and a cation exchange component, thereby resulting in sorbent with bound phospholipid and bound target analyte; adding an aqueous solution comprising an acidic compound and a salt; adding an organic solution to the sorbent thereby desorbing at least a portion of the bound phospholipid from the sorbent; and adding an elution solution to the sorbent, thereby desorbing at least a portion of the bound target analyte from the sorbent and forming a solution of the target analyte in the elution solution. In other aspects, the present disclosure pertains to kits, which may be used in conjunction with such methods.

公开(公告)号：US11618016B2

公开(公告)日：2023-04-04

申请号：US17503986

申请日：2021-10-18

Applicant: ENTEGRIS, INC.

Inventor： Jad Ali Jaber ,  Alketa Gjoka ,  Saksatha Ly

IPC: B01J47/12 ,  B01D67/00 ,  B01D69/02 ,  B01D71/68 ,  B01D71/78 ,  B01J39/05 ,  B01J39/19 ,  B01J41/07 ,  B01J41/13 ,  C08G81/02 ,  C08J5/22 ,  C08J7/12

Abstract: A polysulfone membrane is modified so that monomers are wafted onto the surface of the membrane. The polysulfone membranes can be grafted by contacting the membrane with a grafting solution and exposing the membrane to electromagnetic radiation, typically within the ultraviolet portion of the spectrum. The monomers that are grafted are typically anionic or cationic. The grafted membranes can be used for filtering impurities, such as positively and negatively charged particles, from a liquid. Anionic membranes provide improved filtration of negatively charged impurities, while cationic membranes provide improved filtration of positively charged impurities.

公开(公告)号：US11612885B2

公开(公告)日：2023-03-28

申请号：US16406816

申请日：2019-05-08

Applicant: WATERS TECHNOLOGIES CORPORATION

Inventor： Qi Wang ,  Matthew A. Lauber

IPC: B01J49/53 ,  B01J39/05 ,  B01D15/36 ,  B01J39/18 ,  B01J39/26 ,  B01J47/02 ,  C07K1/18 ,  C07K16/24 ,  C07K16/28 ,  C07K16/32 ,  G01N30/08 ,  B01J47/022

Abstract: The present disclosure relates to methods, compositions and kits useful for the enhanced pH gradient cation exchange chromatography of a variety of analytes. In various aspects, the present disclosure pertains to chromatographic elution buffer solutions that comprise a first buffer salt, a second buffer salt, a third buffer salt, and fourth buffer salt. The first buffer salt may be, for example, a diprotic acid buffer salt, the second buffer salt may be, for example, a divalent buffer salt with two amine groups, the third buffer salt may be, for example, a monovalent buffer salt comprising a single amine group, and the fourth buffer salt may be, for example, a zwitterionic buffer salt. Moreover, the buffer solution has a pH ranging from 3 to 11.

公开(公告)号：US20230079295A1

公开(公告)日：2023-03-16

申请号：US17797397

申请日：2021-01-08

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Shin-ya MATSUMOTO ,  Masatoshi TAKANO ,  Shin-ichi HEGURI ,  Satoshi ASANO ,  Osamu IKEDA ,  Yohei KUDO

IPC: C01D15/02 ,  C01D15/04 ,  B01J39/05 ,  B01J39/18 ,  B01J47/02 ,  B01D61/44 ,  B01D15/36

Abstract: A method for producing lithium hydroxide that allows reducing a load of removing divalent or more ions with an ion-exchange resin is provided. The method for producing lithium hydroxide includes steps (1) to (3) below. (1) a neutralization step: a step of adding an alkali to a first lithium chloride containing liquid to obtain a post-neutralization liquid, (2) an ion-exchange step: a step of bringing the post-neutralization liquid into contact with an ion-exchange resin to obtain a second lithium chloride containing liquid, and (3) a conversion step: a step of electrodialyzing the second lithium chloride containing liquid to obtain a lithium hydroxide containing liquid. Since this producing method allows roughly removing divalent or more ions in the neutralization step, a load of metal removal with the ion-exchange resin is reducible.

公开(公告)号：US20220396641A1

公开(公告)日：2022-12-15

申请号：US17344217

申请日：2021-06-10

Applicant: CYCLOLAB CYCLODEXTRIN RESEARCH AND DEVELOPMENT LABORATORY LTD.

Inventor： Tamas Sohajda ,  Gabriella Hirschbergne Szejtli ,  István Puskás

IPC: C08B37/16 ,  B01J41/05 ,  B01J39/05 ,  C08B37/00

Abstract: Present invention relates to a process to reduce butane sultone hydrolysis products (4-hydroxybutane-1-sulfonic acid, and bis(4-sulfobutyl) ether disodium) in sulfobutylether cyclodextrin reaction mixtures achieved with the combined use of a strong anion exchange resin having dialkyl 2-hydroxyethyl ammonium hydroxide functionality and a cation exchange resin.

公开(公告)号：US11452999B2

公开(公告)日：2022-09-27

申请号：US16897994

申请日：2020-06-10

Applicant: Bayer AS

Inventor： Dimitrios Mantzilas ,  Jan Roger Karlson ,  Judit Tjelmeland Østby

IPC: B01J41/05 ,  B01J39/05 ,  B01D15/18 ,  B01D15/36 ,  G21G1/00 ,  B01J49/60 ,  A61K51/00

Abstract: The present invention comprises a method for the generation of 227Th of pharmaceutically tolerable purity comprising i) preparing a generator mixture comprising 227Ac, 227Th and 223Ra; ii) loading said generator mixture onto a strong base anion exchange resin; iii) eluting a mixture of said 223Ra and 227Ac from said strong base anion exchange resin using a first mineral acid in an aqueous solution; iv) eluting 227Th from said strong base anion exchange resin using a second mineral acid in an aqueous solution whereby to generate a first 227Th solution containing contaminant 223Ra and 227Ac; v) loading the first 227Th solution onto a strong acid cation exchange resin; vi) eluting at least a part of the contaminant 223Ra and 227Ac from said strong acid cation exchange resin using a third mineral acid in aqueous solution; and vii) eluting the 227Th from said strong acid cation exchange resin using a first aqueous buffer solution to provide a second 227Th solution. Purified thorium-227 of pharmaceutical purity and a pharmaceutical composition comprising the same are also provided.

公开(公告)号：US20220184595A1

公开(公告)日：2022-06-16

申请号：US17543362

申请日：2021-12-06

Applicant: ENTEGRIS, INC.

Inventor： James Hamzik ,  Jad Ali Jaber

IPC: B01J39/05 ,  B01J47/12 ,  B01D69/02 ,  B01D71/26 ,  B01D71/32

Abstract: This disclosure provides certain strong cation-modified ion exchange resins and membranes useful for carrying out the removal of metal and metal ion contaminants in fluid compositions. Filtered liquid compositions with significantly reduced amounts of metals can be used in a microelectronic manufacturing process, such as liquids for removing photoresist. The cation-modified ion exchange resins and membranes of the disclosure can be configured for use in a microelectronic manufacturing system, which can be utilized in the system as a point of use metal-removal feature for liquids entering the system. Advantageously, the filter materials and methods of this disclosure showed considerable improvement in preventing degradation and the formation of color bodies and dimeric and oligomeric materials from ketones (e.g., cyclohexanone) in the liquid compositions while not compromising the filter material's ability to remove undesired metal ions.