公开(公告)号：US20240254266A1

公开(公告)日：2024-08-01

申请号：US18621234

申请日：2024-03-29

申请人： AGC Inc.

发明人： Susumu SAITO ,  Satoru HOMMURA ,  Hiroyuki WATABE

IPC分类号： C08F214/18 ,  C08F216/38 ,  C08J5/22 ,  H01M8/1004 ,  H01M8/1039 ,  H01M8/1088 ,  H01M8/10

CPC分类号： C08F214/184 ,  C08F216/38 ,  C08J5/225 ,  H01M8/1004 ,  H01M8/1039 ,  H01M8/1088 ,  C08J2327/12 ,  H01M2008/1095

摘要： To provide a method for producing a fluorinated polymer, in which it is possible to efficiently and easily control the molecular weight to be proper when polymerizing a perfluoromonomer having a dioxolane ring containing a polymerizable double bond in the ring skeleton, and in which the obtainable fluorinated polymer is less susceptible to a decrease in molecular weight even when contacted with a base. A method for producing a fluorinated polymer, comprising polymerizing a raw-material mixture which contains at least one of a monomer composition M11 which comprises a perfluoromonomer represented by the formula m11 and a fluorinated monomer m11H having at least some of fluorine atoms of said perfluoromonomer substituted by hydrogen atoms, and a monomer composition M12 which comprises a perfluoromonomer represented by formula m12 and a fluorinated monomer m12H having at least some of fluorine atoms of said perfluoromonomer substituted by hydrogen atoms, wherein the total amount of the fluorinated monomer m11H and the fluorinated monomer m12H is from 10 to 1,100 ppm to the total amount of the monomer composition M11 and the monomer composition M12.

公开(公告)号：US20220251264A1

公开(公告)日：2022-08-11

申请号：US17725459

申请日：2022-04-20

申请人： AGC INC.

发明人： Takeshi HIRAI ,  Susumu SAITO ,  Hiroyuki WATABE

IPC分类号： C08F216/14 ,  C08K3/08 ,  C08K3/04 ,  C08K3/22 ,  H01M8/1004 ,  H01M8/1039 ,  H01M8/1072

摘要： The present invention provides a fluoropolymer containing fluorosulfonyl groups capable of forming a polymer electrolyte membrane with high conductivity and hot water resistance, a method for its production, a fluoropolymer containing acid-form sulfonic acid groups and a method for its production, a polymer electrolyte membrane, a membrane-electrode assembly and a polymer electrolyte fuel cell. The method for producing a fluoropolymer containing fluorosulfonyl groups of the present invention comprises copolymerizing a monomer m1 (CF2═CFCF2O-Q1-SO2F) and TFE in a reactor at a temperature of from 150 to 200° C. in the presence of a radical polymerization initiator, wherein the radical polymerization initiator is continuously or sequentially added into the reactor so that the concentration of the radical polymerization initiator is kept to at most 2.5 mass ppm of the initial feed of the monomer m1 present in the reactor before initiation of the copolymerization during the copolymerization, and the molar ratio of the total feed of the monomer m1 to the total feed of tetrafluoroethylene is from 1.5 to 20

公开(公告)号：US20210296673A1

公开(公告)日：2021-09-23

申请号：US17333682

申请日：2021-05-28

申请人： AGC Inc.

发明人： Susumu SAITO ,  Takumi OKUYAMA ,  Hiroyuki WATABE

IPC分类号： H01M8/1039 ,  H01M8/1067 ,  H01M8/1051 ,  C08L27/12 ,  C08K3/22

摘要： To provide a liquid composition capable of forming a polymer electrolyte membrane which is excellent in the initial power generation characteristics when made into a membrane electrode assembly, and which is excellent in durability and has few defects. This liquid composition comprises a liquid medium, a sulfonic acid group-containing fluorocarbon polymer and a hardly soluble cerium compound, wherein the ion exchange capacity of the sulfonic acid group-containing fluorocarbon polymer is from 1.36 to 2.50 meq/g dry resin, the average particle size of the hardly soluble cerium compound is from 1 nm to 3,000 nm, and the ratio of the total number of moles of cerium atoms in the hardly soluble cerium compound to the total number of moles of sulfonic acid groups in the sulfonic acid group-containing fluorocarbon polymer is from 0.001 to 0.3.

公开(公告)号：US20210070903A1

公开(公告)日：2021-03-11

申请号：US17061703

申请日：2020-10-02

申请人： AGC Inc.

发明人： Susumu SAITO ,  Satoru HOMMURA ,  Hiroyuki WATABE

IPC分类号： C08F214/18 ,  C08J5/22 ,  H01M8/1088 ,  H01M8/1039 ,  H01M8/1004

摘要： To provide a method for producing a fluorinated polymer, in which it is possible to efficiently and easily control the molecular weight to be proper when polymerizing a perfluoromonomer having a dioxolane ring containing a polymerizable double bond in the ring skeleton, and in which the obtainable fluorinated polymer is less susceptible to a decrease in molecular weight even when contacted with a base. A method for producing a fluorinated polymer, comprising polymerizing a raw-material mixture which contains at least one of a monomer composition M11 which comprises a perfluoromonomer represented by the formula m11 and a fluorinated monomer m11H having at least some of fluorine atoms of said perfluoromonomer substituted by hydrogen atoms, and a monomer composition M12 which comprises a perfluoromonomer represented by formula m12 and a fluorinated monomer m12H having at least some of fluorine atoms of said perfluoromonomer substituted by hydrogen atoms, wherein the total amount of the fluorinated monomer mil H and the fluorinated monomer m12H is from 10 to 1,100 ppm to the total amount of the monomer composition M11 and the monomer composition M12.

公开(公告)号：US20210009733A1

公开(公告)日：2021-01-14

申请号：US17034149

申请日：2020-09-28

申请人： AGC Inc.

发明人： Hiroyuki WATABE ,  Mitsuhisa MATSUMOTO

IPC分类号： C08F216/14 ,  G01N11/16 ,  B01D35/02 ,  B67C3/22

摘要： To provide a method for fractionating a liquid composition, which is excellent in separability of the liquid composition. This method for fractionating a liquid composition comprises discharging, from a discharge port of a filling nozzle, a liquid composition containing a solvent and a polymer having ion exchange groups, and fractionating a predetermined amount of the liquid composition, characterized in that the temperature of the liquid composition is controlled so that the average tan δ1 of the liquid composition when discharged from the discharge port of the filling nozzle becomes to be at most 1.00.

公开(公告)号：US20210380732A1

公开(公告)日：2021-12-09

申请号：US17407236

申请日：2021-08-20

申请人： AGC Inc.

发明人： Takeshi HIRAI ,  Hiroyuki WATABE ,  Susumu SAITO

IPC分类号： C08F14/26 ,  H01M8/18 ,  H01M50/414 ,  H01M8/1004 ,  H01M50/449 ,  C08F8/12

摘要： To provide a sulfonic acid group-containing polymer which is capable of forming a low hydrogen permeable membrane, which shows a high ion exchange capacity, and which shows a proper softening temperature. The sulfonic acid group-containing polymer has units u1 represented by the following formula u1, units u2 represented by the following formula u2, and units u3 based on tetrafluoroethylene, in the formula u1, RF1 and RF2 are each independently a C1-3 perfluoroalkylene group, and Z+ is a hydrogen ion, a metal ion, or an ammonium ion, —[CF2—CF(CF2O—Rf1)]—  Formula u2 in the formula u2, Rf1 is a perfluoroalkyl group which may contain a SO3−Z+ group and/or an etheric oxygen atom.

公开(公告)号：US20210301044A1

公开(公告)日：2021-09-30

申请号：US17330788

申请日：2021-05-26

申请人： AGC Inc.

发明人： Takeshi HIRAI ,  Susumu SAITO ,  Hiroyuki WATABE ,  Chikaya TAMITSUJI ,  Daisuke JOMUTA

IPC分类号： C08F16/30 ,  C08J5/22 ,  B01J39/20 ,  B01J39/05 ,  H01M8/1039 ,  H01M8/1067 ,  H01M8/1023 ,  H01M8/1004 ,  C25B1/04 ,  C25B13/08

摘要： To provide an acid-type sulfonic acid group-containing polymer which is excellent in hydrogen gas barrier properties and hot water resistance and which generates less oligomer during production; a liquid composition and a polymer electrolyte membrane comprising this acid-type sulfonic acid group-containing polymer; and a membrane electrode assembly and a polymer electrolyte fuel cell provided with the polymer electrolyte membrane.
This acid-type sulfonic acid group-containing polymer is a polymer which has perfluoromonomer units, no monomer units having a halogen atom other than a fluorine atom, and acid-type sulfonic acid groups, and of which the hydrogen gas permeability coefficient under the conditions of a temperature of 80° C. and a relative humidity of 10%, is at most 2.5×10−9 cm3·cm/(s·cm2·cmHg), and the mass reduction rate when being immersed in hot water at 120° C. for 24 hours is at most 15 mass %, wherein the TQ value of a polymer having fluorosulfonyl groups which is a precursor of the polymer having acid-type sulfonic acid groups, is at least 220° C.