公开(公告)号：US20250059304A1

公开(公告)日：2025-02-20

申请号：US18926389

申请日：2024-10-25

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Masanori KITAICHI ,  Tatsuya Morikawa ,  Takuma Iwasaka ,  Yuto Kurasaki ,  Eisaku Sumino ,  Ryo Takishima ,  Tomohito Inoue ,  Taketo Kato ,  Kenji Ichikawa ,  Kengo Ito ,  Chiaki Okui ,  Masaki Irie ,  Taku Yamanaka

IPC: C08F2/26 ,  C08F6/22 ,  C08F14/26

Abstract: There is provided a method for producing a fluoropolymer, the method including polymerizing a fluoromonomer in an aqueous medium to obtain a polymerization dispersion containing the fluoropolymer, and bringing the fluoropolymer in the polymerization dispersion into contact with an alcohol having 3 to 5 carbon atoms to coagulate the fluoropolymer to thereby obtain the fluoropolymer.

公开(公告)号：US20250043042A1

公开(公告)日：2025-02-06

申请号：US18926639

申请日：2024-10-25

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Kengo ITO ,  Chiaki Okui ,  Kenji Ichikawa ,  Taketo Kato

IPC: C08F14/26

Abstract: Provided is a method for producing a composition containing a fluororesin, the method comprising polymerizing tetrafluoroethylene in an aqueous medium in the presence of a polymer (I) containing a polymerization unit (I) derived from a monomer (I) represented by the general formula (I) to obtain a polymerization dispersion containing a fluororesin containing a tetrafluoroethylene unit, coagulating the fluororesin in the polymerization dispersion to obtain a coagulate, and washing the coagulate to obtain a composition containing the fluororesin, wherein (1) the coagulation is carried out by bringing the fluororesin in the polymerization dispersion into contact with an organic solvent, and/or (2) the washing is carried out by bringing the coagulate into contact with an organic solvent, CX1X3═CX2R(—CZ1Z2-A0)m  (I) wherein the definitions of the reference signs in the formula are as provided in the specification.

公开(公告)号：US20240150505A1

公开(公告)日：2024-05-09

申请号：US18397595

申请日：2023-12-27

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takahiro TAIRA ,  Kazuhiro Mishima ,  Takayuki Tanaka ,  Takeki Kusunoki ,  Masayoshi Miyamoto ,  Tomoki Minamiyama ,  Mitsuo Tsukamoto ,  Kenji Ichikawa ,  Takuya Yamabe ,  Hirotoshi Yoshida ,  Taketo Kato ,  Taku Yamanaka

IPC: C08F214/26 ,  B29C43/00 ,  C08F2/18 ,  C08F6/24 ,  C08F8/22

CPC classification number: C08F214/262 ,  B29C43/003 ,  B29C43/006 ,  C08F2/18 ,  C08F6/24 ,  C08F8/22 ,  B29K2027/18

Abstract: A method for producing a polytetrafluoroethylene powder, which includes subjecting tetrafluoroethylene to suspension polymerization in an aqueous medium to prepare a suspension-polymerized particle of non melt-processible polytetrafluoroethylene, drying the suspension-polymerized particle to prepare a dry particle, subjecting the dry particle to fluorine radical treatment to prepare a fluorine radical-treated particle, and crushing the fluorine radical-treated particle to produce a polytetrafluoroethylene powder. Also disclosed is a polytetrafluoroethylene formed article obtained by forming the polytetrafluoroethylene powder, as well as a polytetrafluoroethylene compression-molded article obtained by compression molding the polytetrafluoroethylene powder.

公开(公告)号：US20230340169A1

公开(公告)日：2023-10-26

申请号：US18216644

申请日：2023-06-30

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yoshinori Nanba ,  Kenji Ichikawa ,  Yohei Fujimoto ,  Hirotoshi Yoshida ,  Hiroyuki Sato ,  Taketo Kato ,  Kengo Ito ,  Sumi Ishihara ,  Masahiro Higashi ,  Satoru Yoneda ,  Hirokazu Aoyama ,  Masamichi Sukegawa ,  Yosuke Kishikawa ,  Takahiro Taira ,  Chiaki Okui ,  Taku Yamanaka

IPC: C08F14/26 ,  B29C55/00 ,  C08F2/22 ,  C08F2/44 ,  C08F261/06 ,  C08F114/26 ,  C08F214/26

CPC classification number: C08F14/26 ,  B29C55/005 ,  C08F2/22 ,  C08F2/44 ,  C08F261/06 ,  C08F114/26 ,  C08F214/26 ,  B29K2027/18

Abstract: A method for producing a fluoropolymer, which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a polymer (1), the polymer (1) including a polymerized unit derived from a monomer CX2═CY(—CZ2—O—Rf-A), 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 C1-C40 fluorine-containing alkylene group or a C-C100 fluorine-containing alkylene group and having an ether bond; and A is —COOM, —SO3M, or —OSO3M, wherein M is —H, a metal atom, —NR74, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent, wherein R7 is H or an organic group, providing that at least one of X, Y, and Z contains a fluorine atom.

公开(公告)号：US11634514B2

公开(公告)日：2023-04-25

申请号：US16967965

申请日：2019-02-07

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Taketo Kato ,  Satoru Yoneda ,  Masahiro Higashi ,  Akiyoshi Yamauchi ,  Sumi Ishihara ,  Yosuke Kishikawa ,  Moe Hosokawa ,  Marina Nakano ,  Hirotoshi Yoshida ,  Yoshinori Nanba ,  Kengo Ito ,  Chiaki Okui ,  Kenji Ichikawa ,  Yohei Fujimoto ,  Hirokazu Aoyama ,  Masamichi Sukegawa ,  Taku Yamanaka ,  Hiroyuki Sato

IPC: C08F14/26 ,  C08F2/26 ,  C08F2/22 ,  C08F114/26 ,  C08F214/22 ,  C08K5/11

Abstract: A method for producing a fluoropolymer which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a surfactant to provide a fluoropolymer, the surfactant being represented by the general formula (1): CR1R2R4—CR3R5—X-A, wherein R1 to R5 are each H or a monovalent substituent, with the proviso that at least one of R1 and R3 represents a group represented by the general formula: —Y—R6 and at least one of R2 and R5 represents a group represented by the general formula: —X-A or a group represented by the general formula: —Y—R6; and A is the same or different at each occurrence and is —COOM, —SO3M, or —OSO3M. Also disclosed is a surfactant for polymerization represented by the general formula (1), a method for producing a fluoropolymer using the surfactant and a composition including a fluoropolymer and the surfactant.

公开(公告)号：US20220185917A1

公开(公告)日：2022-06-16

申请号：US17687325

申请日：2022-03-04

Applicant: Daikin Industries, LTD.

Inventor： Yoshinori NANBA ,  Emi Yamamoto ,  Takuya Yamabe ,  Yohei Fujimoto ,  Kenji Ichikawa ,  Taketo Kato ,  Taku Yamanaka ,  Hirotoshi Yoshida

IPC: C08F14/26

Abstract: A composition containing a polytetrafluoroethylene, a polymer (I) containing a polymerization unit (I) based on a monomer represented by the general formula (I), a nonionic surfactant, and an aqueous medium, wherein a content of the polytetrafluoroethylene in the composition is 10% by mass or more based on the composition, and a content of the nonionic surfactant in the composition is 1.0% by mass or more based on the polytetrafluoroethylene, CX1X3═CX2R(—VZ1Z2-A0)m   (I) wherein X1 and X3 are each independently F, Cl, H, or CF3; X2 is H, F, an alkyl group, or a fluorine-containing alkyl group; A0 is an anionic group; R is a linking group; Z1 and Z2 are each independently H, F, an alkyl group, or a fluorine-containing alkyl group; and m is an integer of 1 or more.

公开(公告)号：US20250092242A1

公开(公告)日：2025-03-20

申请号：US18968356

申请日：2024-12-04

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yoshinori NANBA ,  Kenji Ichikawa ,  Yohei Fujimoto ,  Hirotoshi Yoshida ,  Hiroyuki Sato ,  Taketo Kato ,  Kengo Ito ,  Taku Yamanaka

IPC: C08L27/18 ,  C08L27/22

Abstract: A composition including a polytetrafluoroethylene and a polymer (I) containing a polymerization unit (I) based on a monomer represented by the following general formula (I), the composition having a standard specific gravity of 2.200 or less: CX1X3=CX2R(—CZ1Z2-A0)m  (I) wherein X1 and X3 are each independently F, Cl, H, or CF3; A0 is an anionic group; X2 is H, F, an alkyl group, or a fluorine-containing alkyl group; R is a linking group; Z1 and Z2 are each independently H, F, an alkyl group, or a fluorine-containing alkyl group; and m is an integer of 1 or more.

公开(公告)号：US12195617B2

公开(公告)日：2025-01-14

申请号：US17294871

申请日：2019-11-19

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yoshinori Nanba ,  Kenji Ichikawa ,  Yohei Fujimoto ,  Hirotoshi Yoshida ,  Hiroyuki Sato ,  Taketo Kato ,  Kengo Ito ,  Taku Yamanaka

IPC: C08L27/18 ,  C08L27/22

Abstract: A composition including a polytetrafluoroethylene and a polymer (I) containing a polymerization unit (I) based on a monomer represented by the following general formula (I), the composition having a standard specific gravity of 2.200 or less: CX1X3═CX2R(—CZ1Z2-A0)m  (I) wherein X1 and X3 are each independently F, Cl, H, or CF3; A0 is an anionic group; X2 is H, F, an alkyl group, or a fluorine-containing alkyl group; R is a linking group; Z1 and Z2 are each independently H, F, an alkyl group, or a fluorine-containing alkyl group; and m is an integer of 1 or more.

公开(公告)号：US12012470B2

公开(公告)日：2024-06-18

申请号：US17974402

申请日：2022-10-26

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Taketo Kato ,  Satoru Yoneda ,  Manabu Fujisawa ,  Kazuya Asano ,  Takahiro Kitahara ,  Masahiro Higashi ,  Akiyoshi Yamauchi ,  Sumi Ishihara ,  Yosuke Kishikawa ,  Shinnosuke Nitta ,  Marina Nakano ,  Hirotoshi Yoshida ,  Yoshinori Nanba ,  Kengo Ito ,  Chiaki Okui ,  Hirokazu Aoyama ,  Masamichi Sukegawa ,  Taku Yamanaka ,  Yuuji Tanaka ,  Kenji Ichikawa ,  Yohei Fujimoto ,  Hiroyuki Sato

IPC: C08F14/26 ,  C08K5/098 ,  C08K5/42

CPC classification number: C08F14/26 ,  C08K5/098 ,  C08K5/42 ,  C08K2201/014 ,  C08K2201/019

Abstract: A composition including a fluoropolymer and substantially free from a compound represented by the following formula (3): (H—(CF2)8—SO3)qM2, wherein M2 is H, a metal atom, NR54, imidazolium optionally containing a substituent, pyridinium optionally containing a substituent, or phosphonium optionally containing a substituent; R5s are each H or an organic group and are the same as or different from each other; and q is 1 or 2.

公开(公告)号：US20240002558A1

公开(公告)日：2024-01-04

申请号：US18467238

申请日：2023-09-14

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Hiroyuki SATO ,  Kenji Ichikawa ,  Taketo Kato ,  Taku Yamanaka

IPC: C08F114/26

CPC classification number: C08F114/26

Abstract: The present disclosure provides a method for producing a fluororesin, which includes polymerizing a fluorine-containing monomer in the presence of a compound (1) having triple bond and a hydrophilic group and an aqueous medium to produce a fluororesin, a fluororesin comprising a unit based on a compound (1) having triple bond and a hydrophilic group, and a fluorine-containing monomer unit, and an aqueous dispersion comprising the fluororesin and an aqueous medium.