公开(公告)号：US20210245148A1

公开(公告)日：2021-08-12

申请号：US17242848

申请日：2021-04-28

Applicant: AGC, Inc.

Inventor： Yasushi YAMAKI ,  Hiromitsu KUSANO

IPC: B01J39/05 ,  B01J39/20 ,  B01J47/12 ,  C08L27/12 ,  C08J5/22

Abstract: The present invention provides composite particles which are capable of forming an ion exchange membrane with fewer defects and an ion exchange membrane. The composite particles according to the present invention comprise pellets comprising a fluorinated polymer having groups convertible to ion exchange groups, and a powder held on the pellet surface which comprises a polymer, wherein the powder has an average particle diameter of at least 1 μm and at most 1,000 μm, and the ratio of the average particle diameter of the pellets to the average particle diameter of the powder is 2 to 4,500.

公开(公告)号：US20210187422A1

公开(公告)日：2021-06-24

申请号：US16769451

申请日：2019-01-03

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Mitsuaki Kobayashi ,  Yukihisa Okada ,  Takaaki Shirai ,  Hideyuki Okada

IPC: B01D39/16 ,  B01J39/05 ,  B01J41/07 ,  B01J45/00 ,  B01J47/018

Abstract: 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 water having an electric resistivity value of 18 MΩ·cm or more is allowed to pass through a space velocity of 1200 hr−1, the electric resistivity value of water after passage is 15 MΩ·cm or more. To provide a filter that can efficiently remove metal ions in a solution to be treated, and easily acquire a solution having an extremely low content of metal ions.

公开(公告)号：US20210162370A1

公开(公告)日：2021-06-03

申请号：US17078435

申请日：2020-10-23

Applicant: Puridify Ltd.

Inventor： Oliver Hardick ,  Daniel Gilbert Bracewell ,  Stewart Dods

IPC: B01J20/26 ,  B01D15/38 ,  C07K1/18 ,  B01J20/285 ,  B01J20/24 ,  B01J20/30 ,  B01D15/36 ,  B01J20/28 ,  B01D15/32 ,  B01J39/05 ,  B01J41/13 ,  B01J41/07 ,  B01J39/19 ,  B01D39/14 ,  B01D39/16 ,  B01J20/287 ,  B01J20/288 ,  B01J39/26 ,  B01J41/20 ,  B29C65/02 ,  B29C65/00 ,  B32B5/02 ,  B32B27/08 ,  B32B27/12 ,  B32B27/32 ,  B32B37/06 ,  B32B37/10 ,  B32B37/18 ,  C07K1/16 ,  C07K1/20 ,  C07K1/22

Abstract: The present invention provides a process for preparing a functionalised polymeric chromatography medium, which process comprises (I) providing two or more non-woven sheets stacked one on top of the other, each said sheet comprising one or more polymer nanofibres, (II) simultaneously heating and pressing the stack of sheets to fuse points of contact between the nanofibres of adjacent sheets, and (III) contacting the pressed and heated product with a reagent which functionalises the product of step (II) as a chromatography medium.

公开(公告)号：US11020734B2

公开(公告)日：2021-06-01

申请号：US15491371

申请日：2017-04-19

Applicant: AGC Inc.

Inventor： Yasushi Yamaki ,  Takayuki Kaneko ,  Hiromitsu Kusano ,  Takuo Nishio

IPC: C25B13/08 ,  B01J39/05 ,  B01J39/20 ,  B01J47/12 ,  C08F214/26 ,  C08F216/14 ,  C25B9/10 ,  C08J5/22 ,  C25B9/23 ,  C25B1/46

Abstract: To provide an ion exchange membrane for alkali chloride electrolysis which has high membrane strength and low membrane resistance, thereby capable of reducing the electrolysis voltage during alkali chloride electrolysis. In this ion exchange membrane (1) for alkali chloride electrolysis, a reinforcing material 20 formed by weaving reinforcing yarns 22 and sacrificial yarns 24 is disposed in a layer (S) 14, and layer (S) 14 has elution portions 28 formed by elution of at least portions of the sacrificial yarns 24. In a cross section perpendicular to reinforcing yarns of the warp, the average distance (d1) from the center of a reinforcing yarn 22 to the center of the adjacent reinforcing yarn 22, the total area (P) obtained by adding the cross-sectional area of an elution portion 28 and the cross-sectional area of a sacrificial yarn 24 remaining in the elution portion 28, the number (n) of elution portions between adjacent reinforcing yarns 22, and the ion exchange capacity of a layer (Sa) located on the most anode side in the layer (S) 14 during alkali chloride electrolysis, are controlled to be within specific ranges, respectively.

公开(公告)号：US10975209B2

公开(公告)日：2021-04-13

申请号：US16716968

申请日：2019-12-17

Applicant: AGC Inc.

Inventor： Susumu Saito ,  Atsushi Watakabe

IPC: C08J5/22 ,  B01J39/04 ,  B01J47/00 ,  C08F216/14 ,  C08F214/24 ,  B01J39/20 ,  B01J39/05 ,  B01J47/012 ,  B01J39/07 ,  C25B1/46 ,  C25B13/08 ,  H01M8/1023 ,  H01M8/1039 ,  H01M8/1018

Abstract: To provide a method for producing a fluorinated polymer which enables stable production of a fluorinated polymer having a high molecular weight at a high polymerization rate with good productivity and reduced environmental burdens, a method for producing a fluorinated polymer having functional groups, and a method for producing an electrolyte membrane. A method for producing a fluorinated polymer, which comprises polymerizing a monomer mixture containing tetrafluoroethylene and a fluorinated monomer having a group convertible to a sulfonic acid group or a carboxylic acid group in a polymerization medium, wherein the polymerization medium contains as the main component a C4-10 cyclic hydrofluorocarbon. Further, a method for producing a fluorinated polymer having functional groups and a method for producing an electrolyte membrane, employing the production method.

公开(公告)号：US10967367B2

公开(公告)日：2021-04-06

申请号：US16478166

申请日：2017-02-10

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Chunxia Costeux ,  Liu Yang ,  Chengli Zu

IPC: B01J49/60 ,  B01J39/05 ,  B01J49/53 ,  B01J31/10 ,  B01J35/00 ,  B01J35/02 ,  B01J39/18

Abstract: Provided is a method of cleaning a collection of resin beads, wherein the method comprises bringing the collection of resin beads into contact with an aqueous solution, wherein the aqueous solution comprises one or more dissolved amine compounds, wherein the collection of resin beads comprises polymer that comprises attached carboxylic acid groups or sulfonic acid groups or a mixture thereof.

公开(公告)号：US20200290873A1

公开(公告)日：2020-09-17

申请号：US16341610

申请日：2017-09-19

Applicant: KURITA WATER INDUSTRIES LTD.

Inventor： Ikunori YOKOI ,  Yoshiaki IDE

IPC: C01B15/013 ,  B01D61/02 ,  B01D69/02 ,  C02F1/44 ,  C02F1/42 ,  B01J39/05 ,  B01J39/20 ,  B01J41/05 ,  B01J41/14 ,  B01J47/028 ,  C08F212/08

Abstract: A purification method for an aqueous hydrogen peroxide solution includes subjecting the aqueous hydrogen peroxide solution to a reverse osmosis membrane separation treatment with a high-pressure reverse osmosis membrane separation device. The high-pressure reverse osmosis membrane has a denser skin layer on the membrane surface and is therefore lower in an amount of membrane permeate water per unit operating pressure but higher in the rejection rate of TOC and boron, as compared with a low-pressure or ultralow-pressure reverse osmosis membrane. The high-pressure reverse osmosis membrane permeate water is preferably further subjected to an ion exchange treatment with an ion exchange device including two or more columns packed with gel-type strong ion exchange resins.

公开(公告)号：US10669309B2

公开(公告)日：2020-06-02

申请号：US15677023

申请日：2017-08-15

Applicant: Jiangnan University

Inventor： Xusheng Chen ,  Zhonggui Mao ,  Jianhua Zhang ,  Hongjian Zhang ,  Ke Wang ,  Honggang He

IPC: C07K1/36 ,  B01D61/58 ,  C08G69/10 ,  B01J41/05 ,  B01J39/07 ,  B01D15/36 ,  B01J41/07 ,  B01J39/05 ,  B01D21/26 ,  B01D61/02 ,  B01D61/14 ,  C07K1/18 ,  C07K1/34 ,  C07K14/36 ,  B01D63/06

Abstract: The present invention provides a method for extracting ε-polylysine (ε-PL) and its hydrochloride salt from fermentation broth, which belongs to the field of bio-separation engineering. ε-PL and its hydrochloride salt are produced from fermentation broth through sequential solid-liquid separation, ultrafiltration, two-stage ion exchange, nanofiltration, evaporation concentration and drying techniques. Technologies of membrane filtration and two-stage ion exchange are applied to the preparation of ε-PL and its hydrochloride salt in the present invention, and the invention are characterized by reduced cost, improved automation, and increased product yield and purity, and the method of the present invention would be more suitable for industrial production.

公开(公告)号：US10600528B2

公开(公告)日：2020-03-24

申请号：US15998846

申请日：2018-08-17

Applicant: Ion Beam Applications S.A.

Inventor： Antero Abrunhosa ,  Vitor Alves ,  Francisco Alves

IPC: G21G1/00 ,  B01J47/00 ,  B01J41/05 ,  G21G1/10 ,  C22B58/00 ,  C07B59/00 ,  B01J41/12 ,  B01J39/18 ,  B01J39/05 ,  A61K51/08

Abstract: The present disclosure relates to a process for purifying and concentrating 68Ga isotope produced by irradiation with an accelerated particle beam of a 68Zn target in solution. The process according to the present disclosure allows for the production of pure and concentrated 68Ga isotope in hydrochloric acid solution. The present disclosure also relates to a disposable cassette for performing the steps of purification and concentration of the process.

公开(公告)号：US10576467B2

公开(公告)日：2020-03-03

申请号：US15564882

申请日：2016-04-08

Applicant: INVISTA NORTH AMERICA S.A.R.L.

Inventor： Mariusz Kamionka ,  Alex Conradie

IPC: C02F1/20 ,  C02F1/42 ,  B01J39/05 ,  B01J39/18 ,  B01J47/11 ,  B01J49/05 ,  B01J49/60 ,  B01J47/014 ,  B01J47/016 ,  C02F101/34 ,  C02F101/38 ,  C07C209/86

Abstract: Described herein are processes and apparatus for the high purity and high concentration recovery of multivalent products via continuous ion exchange from aqueous solutions for further down-stream purification.