Daikin Industries, Ltd.

Hokkaido University

Saga University

The Doshisha

University Public Corporation Osaka

The University of Tokyo

Osaka Prefecture University Public Corporation

Yosuke Kishikawa

Sumi Ishihara

Masahiro Higashi

Akiyoshi Yamauchi

Satoru Yoneda

Hirokazu Aoyama

Makoto Matsuura

Atsushi Shirai

Hirotoshi Yoshida

Tatsuya Ohtsuka

Yohei Fujimoto

Taku Yamanaka

Taketo Kato

Yoshinori Nanba

Masamichi Sukegawa

Kenji Ichikawa

Hiroyuki Sato

Kengo Ito

Chiaki Okui

Takahiro Kitahara

Manabu Fujisawa

Kazuya Asano

Yoshichika Kuroki

Takashi Namikawa

Yuuji Tanaka

Yoshihiro Yamamoto

Yoshito Tanaka

Kenji Adachi

Yuuki Suzuki

Shoji Hara

Hiroyuki Arima

Takashi Nomura

Moe Hosokawa

Akihiro Gotou

Shinnosuke Nitta

Michiaki Okada

Yuko Shiotani

Asako Yoshiyama

Naoyuki Hoshiya

Tsugio Kitamura

Manaho Miyazaki

Atsushi Maruo

Masayuki Kishimoto

Marina Nakano

Tomohito Hamada

Takahiro Taira

Kotaro Hayashi

Akitoshi Ogata

Akinori Yamamoto

Masatoshi Nose

Tomohiro Isogai

Takabumi Nagai

Motoshi Matsui

Yuuki Yamamoto

Makoto Suyama

Soushi Tsuchiya

Mayumi Iida

Ryo Akuta

Ilhyong Ryu

Satoshi Honda

Koutarou Hayashi

Souta Yuasa

Takahide Fukuyama

Manaho Tomioka

Atsuya Yamada

Takuya Goto

Takashi Watanabe

Yuta Suzuki

Haruka Fukuda

Shiomi Ashida

Naoya Ikuta

Shinya Handa

Shuhei Sumino

The present disclosure provides a method for producing a fluoropolymer, the method includes 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═CF—R—CZZ-A  (1)wherein R is a linking group; Zand Zare each independently F or CF; and Ais an anionic group.

Method for producing fluoropolymer, method for producing polytetrafluoroethylene, method for producing perfluoroelastomer, and composition

Disclosed is a method for producing an acrylic acid derivative represented by formula (1):

Production method of acrylic acid derivative

A method for producing a hydrocarbon including: preparing a molten salt containing a carbonate of a first metal; obtaining precipitates containing a first metal carbide by applying a voltage to the molten salt; and obtaining a gas containing the hydrocarbon and a hydroxide of the first metal by hydrolyzing the first metal carbide.

Method for producing metal carbide, method for producing hydrocarbon, and metal carbide composition

A method for producing a composition including a step A of performing ultrafiltration, microfiltration, dialysis membrane treatment, or a combination thereof on a composition containing water and a fluoropolymer. The fluoropolymer is a polymer having a structural unit M3 derived from a monomer represented by general formula (1):CX═CY(—CZ—O—Rf-A)  (1)where 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 —COOM, —SOM, —OSOM, or —C(CF)OM, wherein M is as defined herein; provided that at least one of X, Y, and Z includes a fluorine atom.

Composition production method, and composition

The present disclosure provides, for example, a method that can produce a fluorolactone compound from hexafluoropropylene oxide or the like in a single step. The present disclosure relates to a method for producing a compound represented by formula (1): wherein two Rare the same and each is a fluorine atom or a fluoroalkyl group, wherein Ris as defined above, with a compound (3) represented by formula (3-1) or the like: wherein R, R, and Rare the same or different and each is a hydrogen atom or a Calkyl group, or two of them are optionally linked to each other to form a ring optionally having one or more substituents,in the presence of a fluorine compound (4) represented by formula (4-1) or the like:MHF  (4-1)wherein M is a metal atom, n is 0 or 1, and the sum of the valence number of M and n is m, andan organic solvent, provided that the compound represented by formula (3) is excluded from the organic solvent.

Fluorolactone and method for producing same

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 CX═CY(—CZ—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 C2-C100 fluorine-containing alkylene group and having an ether bond; and A is —COOM, —SOM, or —OSOM, wherein M is —H, a metal atom, —NR, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent, wherein R' is H or an organic group, providing that at least one of X, Y, and Z contains a fluorine atom.

Method for manufacturing fluoropolymer

A surfactant for polymerization including at least one selected from a surfactant represented by R—CO—R—CO—R—OSOXand a surfactant represented by R—CO—(CR)—(OR)—(CR)-L-OSOX, wherein R, R, R, X, R, R, R, R, L and Xare as defined herein. Also disclosed is a composition containing a fluoropolymer and the at least one surfactant, a composition containing a fluoropolymer and a compound represented by (H—(CF)—SO)M, where Mis as defined herein, and a molded article made from the composition containing a fluoropolymer and the compound represented by (H—(CF)—SO)M.

Production method for fluoropolymer, surfactant for polymerization, and use of surfactant

An aim of the present disclosure is to provide a method for producing a fluoroalkoxide, said method being more useful than conventional methods, and the like. The aim can be achieved by a method for producing a compound represented by the following formula (1): (wherein Ris a fluoroalkyl group optionally containing an oxygen atom between carbon atoms, or a fluoroalkoxy group optionally containing an oxygen atom between carbon atoms, andeach Ris identical to or different from each other and is a hydrocarbon group),the method comprising the step of reacting

Method for producing fluoroalkoxide

An object of the present disclosure is to provide a method for producing a fluorine-containing polymer and a composition containing the fluorine-containing polymer. The present disclosure provides a composition comprising (A) a fluorine-containing polymer comprising as a main component a structural unit containing a fluorine-containing aliphatic ring, and (B) an aprotic solvent, wherein the fluorine-containing aliphatic ring of the fluorine-containing polymer (A) contains one, two, or three etheric oxygen atoms as a ring-constituting atom; when the fluorine-containing aliphatic ring contains a plurality of etheric oxygen atoms, the etheric oxygen atoms are not adjacent to each other; and the fluorine-containing polymer (A) is present in an amount of 20 mass % or more based on the mass of the composition.

Method for producing fluorine-containing polymer and composition thereof

An object of this disclosure provides a novel method for producing a fluorovinyl amide compound and the like. The object is achieved by a method for producing a compound represented by formula (1): whereinRf is —F or fluoroalkyl,Ris —H or an organic group, andRis —H or an organic group, or(i) Rand R, (ii) Rand Rf, or (iii) Rf and R, may be linked to each other,Ris —H or an organic group, andRis —H or an organic group, orRand Rmay be linked together with their adjacent atoms to form a nitrogen-containing ring optionally having one or more substituents,the method comprisingstep A of reacting a compound represented by formula (2): whereinRis a leaving group,with a compound represented by formula (3) or a salt thereof: in the presence of a transition metal catalyst.

Method for producing fluorovinyl amide compound

A method for producing a fluoropolymer aqueous dispersion, including a step A of subjecting a pre-treatment aqueous dispersion containing a fluoropolymer obtained by polymerization in the presence of a hydrocarbon surfactant to ultrafiltration, microfiltration, or dialysis membrane treatment, or a combination thereof. The ultrafiltration is performed using an ultrafiltration membrane having a molecular weight cutoff of 0.3×10Da or more.

Process for producing aqueous fluoropolymer dispersion

A method for producing a fluoromethyl derivative represented by formula (1), the method including step A of reacting an alkene compound represented by formula (2) with a fluorine source represented by formula MF, in the presence of a hypervalent-iodine aromatic compound (1a), or in the presence of an aromatic iodine compound (1b) and an oxidant (A) to fluorinate the alkene compound.

Production method for fluoromethyl derivative

A method for producing an asymmetric chain carbonate by reacting an alcohol with a halocarbonate ester compound in the presence of a basic magnesium salt.

Production method of asymmetric chain carbonate

An object of the present disclosure is to provide a method for purifying the following fullerene derivative represented by formula (1) that is advantageous in production costs. The object is achieved by the method for purifying the fullerene derivative represented by formula (1) wherein

Purification method

The present disclosure addresses the problem of providing a novel method for producing a fluorinated iodinated organic compound. The problem can be solved by a method for producing a fluorinated iodinated organic compound, comprising reacting a compound represented by formula (1):

Method for producing fluorinated iodinated organic compound

Growing community of inventors

Osaka, Japan

Yosuke Kishikawa