公开(公告)号：EP4421097A1

公开(公告)日：2024-08-28

申请号：EP22918772.9

申请日：2022-12-09

Applicant: Daikin Industries, Ltd.

Inventor： MARUYA, Yoshiki ,  TAKAOKA, Hiroshi ,  SUZUKI, Takaaki ,  NAKAO, Yuki

IPC: C08F2/01 ,  B01J19/08 ,  C08F14/18 ,  C08G85/00

CPC classification number: B01J19/08 ,  C08F2/01 ,  C08G85/00 ,  C08F14/18

Abstract: Provided is a polymerization tank that enables efficient withdrawal of a reaction mixture containing a particulate fluorine-containing polymer and water from the polymerization tank. A polymerization tank for polymerizing at least a fluorine-containing monomer through suspension polymerization in a reaction mixture that contains water to obtain a particulate fluorine-containing polymer, wherein: the polymerization tank has a side wall, a conical sloped bottom positioned below the side wall, and a withdrawal port for the reaction mixture positioned at the lower apex of the conical sloped bottom; and the apex angle of the conical sloped bottom is 90-120° inclusive.

公开(公告)号：EP4357373A1

公开(公告)日：2024-04-24

申请号：EP21945736.3

申请日：2021-10-18

Applicant: Zhejiang Jusheng Fluorochemical Co., Ltd. ,  Fluoropolymer Plant of Zhejiang Juhua Co. Ltd

Inventor： MENG, Qingwen ,  YU, Kaoming ,  CHENG, Yu ,  HUANG, Jun ,  LU, Di ,  CHEN, Jia ,  WANG, Xin ,  HU, Shuaijie

IPC: C08F6/22 ,  C08F14/00 ,  C08F14/08 ,  C08F14/18 ,  C08F214/22 ,  C08F214/26 ,  C08F214/18 ,  C08F214/28 ,  C08J3/03

CPC classification number: C08C1/14 ,  C08F214/22 ,  C08F14/00 ,  C08F6/22 ,  C08F214/18 ,  C08F214/28 ,  C08F214/26 ,  C08J3/03 ,  C08F14/08 ,  C08F14/18

Abstract: Disclosed is a method of improving coagulation of fluororubber emulsion, characterized by adding a solubilizer to a system with the fluororubber emulsion as a stock, including: first adding high purity water to the emulsion, followed by adding a coagulant, and then adding the solubilizer for coagulation. The crumbs resulting from coagulation are loose with low electrical conductivity and moisture content, and are easily washed and dewatered with short drying time; the disclosure reduces product costs and enhances product quality and production efficiency.

公开(公告)号：EP4342917A1

公开(公告)日：2024-03-27

申请号：EP22804696.7

申请日：2022-05-17

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： HIGASHI, Masahiro ,  NAKANISHI, Kanako ,  ISHIHARA, Sumi ,  HOSOKAWA, Moe ,  YAMATO, Kensuke ,  KANEKO, Kazuki ,  KISHIKAWA, Yosuke

IPC: C08F16/24 ,  C08F14/18 ,  C08F16/30 ,  C08F216/14 ,  C09D127/12 ,  C09D129/10

Abstract: Provided is a fluoropolymer of a monomer (I) represented by the general formula (I), wherein a content of a polymerization unit (I) derived from the monomer (I) is 50% by mass or more based on all polymerization units constituting the fluoropolymer:

        General formula (I):     CX 2 =CX-O-Rf-SO 3 M

wherein X is independently F or CF 3 ; Rf is a fluorine-containing alkylene group having 1 to 40 carbon atoms or a fluorine-containing alkylene group having 2 to 100 carbon atoms and having an ether bond or a keto group; and M is -H, a metal atom, -NR 7 4 , imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent, wherein R 7 is H or an organic group.

公开(公告)号：EP3760649B1

公开(公告)日：2024-01-24

申请号：EP19760711.2

申请日：2019-03-01

Inventor： NANBA, Yoshinori ,  ICHIKAWA, Kenji ,  FUJIMOTO, Yohei ,  YOSHIDA, Hirotoshi ,  SATO, Hiroyuki ,  KATO, Taketo ,  ITO, Kengo ,  ISHIHARA, Sumi ,  HIGASHI, Masahiro ,  YONEDA, Satoru ,  AOYAMA, Hirokazu ,  SUKEGAWA, Masamichi ,  KISHIKAWA, Yosuke ,  TAIRA, Takahiro ,  OKUI, Chiaki ,  YAMANAKA, Taku

IPC: C08F2/44 ,  B29C55/00 ,  C08F2/24 ,  C08F14/18 ,  C08F261/06 ,  C08L27/12 ,  C08F259/08 ,  C08F2/26 ,  C08F214/26 ,  C08L27/18 ,  C08F116/14

公开(公告)号：EP4286425A1

公开(公告)日：2023-12-06

申请号：EP22746033.4

申请日：2022-01-28

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： YAMAZAKI, Ranna ,  KATO, Taketo ,  YAMANAKA, Taku ,  YOSHIDA, Hirotoshi ,  YAMABE, Takuya ,  OGURA, Akiho

IPC: C08F14/18 ,  C08F2/24

Abstract: Provided is a fluoropolymer composition production method for producing a fluoropolymer composition comprising a fluoropolymer, the method comprising polymerizing a fluoromonomer in a reactor in the presence of a fluorine-containing surfactant, a polymerization initiator, and an aqueous medium to prepare an aqueous dispersion comprising a fluoropolymer; after the aqueous dispersion is prepared, removing from the reactor the fluoromonomer remaining in the reactor, or recovering the aqueous dispersion in the reactor and accommodating the aqueous dispersion in a container different from the reactor; adding a radical generator to the aqueous dispersion; and subjecting to a heat treatment the aqueous dispersion comprising the radical generator to give a fluoropolymer composition.

公开(公告)号：EP4249517A1

公开(公告)日：2023-09-27

申请号：EP21894762.0

申请日：2021-11-19

Applicant: Daikin Industries, Ltd.

Inventor： YUASA, Sota ,  MORIKAWA, Tatsuya ,  TAMAI, Rina ,  TAKEMURA, Kouhei ,  IRIE, Masaki

IPC: C08F2/44 ,  C08F2/26 ,  C08F14/18 ,  C08L27/12

Abstract: Provided is a method for producing an aqueous dispersion of a fluorine-containing elastomer, comprising polymerizing a fluorine-containing monomer in the presence of a polymer (1) containing a polymerization unit (1) based on a monomer (1) represented by general formula (1) and an aqueous medium,

        CF 2 =CF-R-CZ 1 Z 2 -COOM     (1)

wherein R is a linking group, Z 1 and Z 2 are each independently F or CF 3 , and M is H, a metal atom, NR 7 4 , imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent, wherein R 7 is H or an organic group.

公开(公告)号：EP4227329A1

公开(公告)日：2023-08-16

申请号：EP21877761.3

申请日：2021-10-08

Applicant: AGC INC.

Inventor： KAWAMOTO Masako ,  SAITO Susumu

IPC: C08F14/18 ,  H01M4/86 ,  H01B1/06 ,  H01M8/10 ,  H01M8/1004 ,  H01M8/1039 ,  H01M8/1067

Abstract: To provide a membrane electrode assembly capable of forming a fuel cell excellent in power generation efficiency, and a polymer electrolyte fuel cell.
The membrane electrode assembly of the present invention comprises an anode having a catalyst layer containing a proton-conducting polymer and a catalyst, a cathode having a catalyst layer containing a proton-conducting polymer and a catalyst, and a solid polymer electrolyte membrane disposed between the anode and the cathode, wherein the proton-conducting polymer contained in the catalyst layer of at least one of the anode and the cathode, is a polymer (H) having a cyclic ether structural unit and an ion exchange group, and the solid polymer electrolyte membrane contains a fluorinated polymer (S) having an ion exchange group; and the thickness of the solid polymer electrolyte membrane is from 5 to 15 µm, and the ratio of the content M1 [mol%] of the cyclic ether structure unit to the thickness T1 [µm] of the solid polymer electrolyte membrane is 4.5 or more.

公开(公告)号：EP4063404A1

公开(公告)日：2022-09-28

申请号：EP20890717.0

申请日：2020-11-19

Applicant: Daikin Industries, Ltd.

Inventor： NANBA, Yoshinori ,  KATO, Taketo ,  ICHIKAWA, Kenji ,  TSUCHIYA, Soushi ,  YUASA, Souta ,  KISHIKAWA, Yosuke ,  HIGASHI, Masahiro ,  IRIE, Masaki ,  YAMANAKA, Taku

IPC: C08F14/18 ,  C08F259/08 ,  C08L27/12 ,  C08L27/18 ,  C08F2/44

Abstract: The present disclosure provides a method for producing a fluoropolymer, the method comprising polymerizing a fluoromonomer in an aqueous medium in the presence of a polymer (1) to obtain a fluoropolymer, wherein the polymer (1) is a polymer of a monomer (1) represented by the general formula (1) below, in which the content of a dimer and a trimer of the monomer (1) is 1.0% by mass or less based on the polymer (1):

        CF 2 =CF-R-CZ 1 Z 2 -A 0      (1)

wherein R is a linking group; Z 1 and Z 2 are each independently F or CF 3 ; and A 0 is an anionic group.

公开(公告)号：EP4026856A1

公开(公告)日：2022-07-13

申请号：EP20859961.3

申请日：2020-09-03

Applicant: Daikin Industries, Ltd.

Inventor： TSUCHIYA, Soushi ,  KATO, Taketo ,  IRIE, Masaki

IPC: C08F14/18 ,  C08K5/16 ,  C08K5/57 ,  C08L27/12 ,  C08L29/10 ,  C08F2/44 ,  C08K3/28

Abstract: The present disclosure provides a method for producing a perfluoroelastomer, comprising carrying out polymerization of a perfluoromonomer in an aqueous medium in the presence of a polymer (1) to provide a perfluoroelastomer, the polymer (1) containing a polymerized unit (1) derived from a monomer represented by the following general formula (1):

        CX 2 =CY (-CZ 2 -O-Rf-A)     (1)

wherein X is the same or different and is -H or -F; Y is -H, -F, an alkyl group, or a fluorine-containing alkyl group; Z is the same or different and is -H, -F, an alkyl group, or a fluoroalkyl group; Rf is a fluorine-containing alkylene group having 1 to 40 carbon atoms or a fluorine-containing alkylene group having 2 to 100 carbon atoms and having an ether bond; and A is -COCM, -SO 3 M, -OSO 3 M, or -C(CF 3 ) 2 OM, where M is -H, a metal atom, -NR 7 4 , imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent and R 7 is -H or an organic group, with the proviso that at least one of X, Y, and Z contains a fluorine atom.

公开(公告)号：EP3960773A1

公开(公告)日：2022-03-02

申请号：EP20795349.8

申请日：2020-04-27

Applicant: Daikin Industries, Ltd.

Inventor： YONEDA, Satoru ,  HIGASHI, Masahiro ,  ISHIHARA, Sumi ,  YOSHIDA, Hirotoshi ,  FUJIMOTO, Yohei

IPC: C08F6/04 ,  C08F14/18 ,  C08F114/26 ,  C08F259/08 ,  C08F214/26 ,  C08F2/20 ,  C08F2/44

Abstract: The present disclosure provides a method for producing a fluoropolymer aqueous dispersion, the method comprising a step A of performing ultrafiltration, microfiltration, or dialysis membrane treatment, or a combination thereof on a pretreatment aqueous dispersion containing a fluoropolymer obtained by polymerization in the presence of a polymer (I) comprising a polymerized unit (I) derived from a monomer represented by the following general formula (I), with the proviso that the fluoropolymer is other than the polymer (I):

        CX 1 X 3 =CX 2 R(-CZ 1 Z 2 -A 0 ) m      (I)

wherein X 1 and X 3 are each independently F, Cl, H, or CF 3 ; X 2 is H, F, an alkyl group, or a fluorine-containing alkyl group; A 0 is an anionic group; R is a linking group; Z 1 and Z 2 are each independently H, F, an alkyl group, or a fluorine-containing alkyl group; and m is an integer of 1 or more.