公开(公告)号：US20240117087A1

公开(公告)日：2024-04-11

申请号：US18512794

申请日：2023-11-17

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yoshinori NANBA ,  Rina TAMAI ,  Takuma IWASAKA ,  Soushi TSUCHIYA ,  Kenji ICHIKAWA ,  Taketo KATO ,  Masaki IRIE ,  Taku YAMANAKA

IPC: C08F214/26 ,  C08F2/16

CPC classification number: C08F214/265 ,  C08F2/16

Abstract: A method for producing a fluoropolymer which method includes polymerizing a perfluoromonomer in an aqueous medium in the presence of a polymer (1) to obtain a fluoropolymer, wherein the content of a polymerized unit derived from the perfluoromonomer in the fluoropolymer is 90 mol % or more based on all polymerized units of the fluoropolymer, the polymer (1) is a polymer of a monomer (1) represented by the general formula (1): CF2═CF—O—R-(Rf-SO3M)m, a polymerized unit (1) derived from the monomer (1) in the polymer (1) is 50% by mass or more based on all polymerized units of the polymer (1), and the content of a dimer and a trimer of the monomer (1) in the polymer (1) is 1.0% by mass or less based on the polymer (1).

公开(公告)号：US20230167219A1

公开(公告)日：2023-06-01

申请号：US18160129

申请日：2023-01-26

Applicant: DAIKIN INDUSTRIES, LTD.

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

IPC: C08F291/06 ,  C08K5/02

CPC classification number: C08F291/06 ,  C08K5/02

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 compound (1) having a triple bond and a hydrophilic group and an aqueous medium to produce an aqueous dispersion of a fluorine-containing elastomer.

公开(公告)号：US20230167212A1

公开(公告)日：2023-06-01

申请号：US18159999

申请日：2023-01-26

Applicant: DAIKIN INDUSTRIES, LTD.

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

IPC: C08F214/22 ,  C08L27/20

CPC classification number: C08F214/22 ,  C08L27/20 ,  C08L2201/54

Abstract: A method for producing an aqueous dispersion of a fluorine-containing elastomer, which includes polymerizing a fluorine-containing monomer in the presence of a fluorine-free compound (1) represented by general formula (1): CR1X1═CX2—R2—COOM and an aqueous medium, to produce an aqueous dispersion of the fluorine-containing elastomer containing —CH2— in a main chain. Also disclosed is an aqueous dispersion of the fluorine-containing elastomer and a composition containing the fluorine-containing elastomer.

公开(公告)号：US20220340694A1

公开(公告)日：2022-10-27

申请号：US17849195

申请日：2022-06-24

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Rina TAMAI ,  Tatsuya MORIKAWA ,  Souta YUASA ,  Soushi TSUCHIYA ,  Kouhei TAKEMURA ,  Kazuyoshi KAWASAKI ,  Masaki IRIE

IPC: C08F14/22 ,  C08F2/38 ,  C08F14/26 ,  C08F2/26

Abstract: Provided is a method for producing a fluorine-containing polymer, comprising polymerizing a fluorine-containing monomer in the presence of a fluorine-free compound (1) represented by general formula (1), a polymerization initiator, and an aqueous medium to produce the fluorine-containing polymer: CX1X2═CX3—R—Z  General formula (1): wherein X1, X2, and X3 are each independently H or an alkyl group; R is a single bond or an alkylene group; the total number of carbon atoms of X1, X2, X3, and R is 0 to 5; Z is —SO3M, —OSO3M, —P(═O)(OM)2, —OP(O)(OM)2, or —B(OM)2; M is H, a metal atom, NR14, optionally substituted imidazolium, optionally substituted pyridinium, or optionally substituted phosphonium; and R1 is independently H or an organic group, and any two R1 may be bonded to each other to form a ring.

公开(公告)号：US20210292450A1

公开(公告)日：2021-09-23

申请号：US17265830

申请日：2019-07-22

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takahiro FURUTANI ,  Rina TAMAI ,  Eisaku SUMINO ,  Yusuke KAMIYA ,  Junpei TERADA ,  Masaki IRIE

IPC: C08F214/22

Abstract: A composition including a fluorine-containing polymer and a cross-linking agent, wherein the fluorine-containing polymer contains a vinylidene fluoride unit, a unit of a fluorine-containing monomer (1) represented by the following general formula (1): CHX1═CX2Rf   (1) wherein one of X1 and X2 is H, the other is F, and Rf is a linear or branched fluoroalkyl group having 1 to 12 carbon atoms, and a unit of a monomer providing a crosslinking site. The monomer providing a crosslinking site is a monomer having at least one crosslinkable group selected from a cyano group, a carboxyl group, an alkoxycarbonyl group and a hydroxyl group. Also disclosed is a crosslinked rubber molded article obtained by crosslinking the composition.

公开(公告)号：US20230303732A1

公开(公告)日：2023-09-28

申请号：US18319177

申请日：2023-05-17

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Soushi TSUCHIYA ,  Masaki IRIE ,  Takuma IWASAKA ,  Rina TAMAI

IPC: C08F116/14 ,  C08K5/57 ,  C08K3/28

CPC classification number: C08F116/14 ,  C08K5/57 ,  C08K3/28

Abstract: The present disclosure provides a method for producing a perfluoroelastomer aqueous dispersion by polymerizing a perfluoromonomer in the presence of a polymer (1) and an aqueous medium to produce an aqueous dispersion of a perfluoroelastomer, the polymer (1) containing a polymerization unit (1) based on a monomer (1) represented by a general formula (1) and the polymer (1) having an ion exchange capacity of 1.50 meq/g or more.

公开(公告)号：US20230167213A1

公开(公告)日：2023-06-01

申请号：US18160384

申请日：2023-01-27

Applicant: DAIKIN INDUSTRIES, LTD.

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

IPC: C08F214/22

CPC classification number: C08F214/22 ,  C08F2800/10

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 fluorine-containing compound (1) represented by general formula (1) and an aqueous medium to produce an aqueous dispersion of a fluorine-containing elastomer:


CX1X2═CX3—Z  General formula (1):

wherein X1 to X3 are each independently H, F, or a fluorine-containing alkyl group; when X1 and X2 are both H, X3 is F or a fluorine-containing alkyl group; Z is a group represented by —COOM, —SO3M, —OSO3M, —PO(OM)2, —OPO(OM)2, —BO(OM)2, or —OBO(OM)2; M is H, a metal atom, NR14, optionally substituted imidazolium, optionally substituted pyridinium, or optionally substituted phosphonium; and R1 is independently H or an organic group, and any two R1 are optionally bonded to each other to form a ring.

公开(公告)号：US20220267483A1

公开(公告)日：2022-08-25

申请号：US17627029

申请日：2020-07-16

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Rina TAMAI ,  Tatsuya MORIKAWA ,  Kazuyoshi KAWASAKI ,  Masaki IRIE

IPC: C08F2/26 ,  C08F2/38 ,  C08F4/40 ,  C08F214/22 ,  C08F214/26 ,  C08F214/28

Abstract: A method for producing a fluorine-containing elastomer, which includes carrying out an emulsion polymerization of a fluorine-containing monomer in an aqueous medium in the presence of (A) a fluorine-containing compound containing a functional group capable of reaction by radical polymerization and a hydrophilic group and (B) a hydrocarbon surfactant to provide a fluorine-containing elastomer.