Daikin Industries, Ltd.

Satoru Yoneda

Yosuke Kishikawa

Sumi Ishihara

Masahiro Higashi

Hirokazu Aoyama

Akiyoshi Yamauchi

Hirotoshi Yoshida

Yohei Fujimoto

Taku Yamanaka

Taketo Kato

Yoshinori Nanba

Masamichi Sukegawa

Kenji Ichikawa

Hiroyuki Sato

Kengo Ito

Chiaki Okui

Marina Nakano

Takahiro Kitahara

Manabu Fujisawa

Kazuya Asano

Shinnosuke Nitta

Yuuji Tanaka

Takahiro Taira

Moe Hosokawa

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

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

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 composition including a fluoropolymer and substantially free from a compound represented by the following formula (3): (H—(CF)—SO)M, wherein Mis H, a metal atom, NR, imidazolium optionally containing a substituent, pyridinium optionally containing a substituent, or phosphonium optionally containing a substituent; Rs are each H or an organic group and are the same as or different from each other; and q is 1 or 2.

An alkyl sulfate ester containing a carbonyl group or a salt thereof. The compound is represented by the following formula:R—C(—O)—(CR)—(OR)—(CR)-L-OSOXwherein R, R, R, R, L, X, n, p and q are as defined herein. Also disclosed is a production method for making the alkyl sulfate ester.

Alkyl sulfate ester or salt of 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&#x2550;CY(&#x2014;CZ&#x2014;O&#x2014;Rf-A), wherein X is the same or different and is &#x2014;H or &#x2014;F; Y is &#x2014;H, &#x2014;F, an alkyl group, or a fluorine-containing alkyl group; Z is the same or different and is &#x2014;H, &#x2014;F, an alkyl group, or a fluoroalkyl group; Rf is a C1-C40 fluorine-containing alkylene group or a C&#x2014;C100 fluorine-containing alkylene group and having an ether bond; and A is &#x2014;COOM, &#x2014;SOM, or &#x2014;OSOM, wherein M is &#x2014;H, a metal atom, &#x2014;NR, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent, wherein Ris H or an organic group, providing that at least one of X, Y, and Z contains a fluorine atom.

A sulfuric acid ester containing a plurality of carbonyl groups or a salt thereof, and a surfactant. The sulfuric acid ester is a compound represented by the following formula:R&#x2014;C(&#x2550;O)&#x2014;R&#x2014;C(&#x2550;O)&#x2014;R&#x2014;OSOXwherein R, Rand Rare defined herein; X is H, a metal atom, NR, imidazolium optionally containing a substituent, pyridinium optionally containing a substituent, or phosphonium optionally containing a substituent, where Rs are each H or an organic group and are the same as or different from each other; and any two of R, R, and Roptionally bind to each other to form a ring. Also disclosed is a surfactant containing the sulfuric acid ester and an aqueous dispersant containing the sulfuric acid ester.

Sulfuric acid ester or salt thereof, and surfactant

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): CRRR&#x2014;CRR&#x2014;X-A, wherein Rto Rare each H or a monovalent substituent, with the proviso that at least one of Rand Rrepresents a group represented by the general formula: &#x2014;Y&#x2014;Rand at least one of Rand Rrepresents a group represented by the general formula: &#x2014;X-A or a group represented by the general formula: &#x2014;Y&#x2014;R; and A is the same or different at each occurrence and is &#x2014;COOM, &#x2014;SOM, or &#x2014;OSOM. 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.

Method for manufacturing fluoropolymer, surfactant for polymerization, use for surfactant, and composition

A method for producing a fluoropolymer of the invention which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a surfactant to provide a fluoropolymer. The surfactant includes at least one selected from the group consisting of a surfactant represented by R&#x2014;CO&#x2014;R&#x2014;CO&#x2014;R-Aand a surfactant represented by R&#x2014;CO&#x2014;(CR)&#x2014;(OR)&#x2014;(CR)-L-A.

A sulfonic acid or carboxylic acid containing a carbonyl group, or a salt thereof represented by the following formula:R&#x2014;C(&#x2550;O)&#x2014;(CR)&#x2014;(OR)&#x2014;(CR)-L-Awherein R, R, R, R, n, p, q, A and L are as defined herein.

Sulfonic acid, carboxylic acid, and salts thereof

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 includes at least one selected from the group consisting of a surfactant represented by R&#x2014;CO&#x2014;R&#x2014;CO&#x2014;R&#x2014;OSOXand a surfactant represented by R&#x2014;CO&#x2014;(CR)&#x2014;(OR)&#x2014;(CR)-L-OSOX.

A method for producing a carbonyl compound represented by formula (1): wherein Ris hydrogen or an organic group; Ris hydrogen or an organic group; and Ris hydrogen or an organic group; or two or three of R, R, and Rmay be linked to form a ring that may have at least one substituent, the method comprising step A of oxidizing an olefin compound represented by formula (2): wherein symbols are as defined above, by an oxidizing agent in the presence of (a) a non-alcohol organic solvent, (b) water, (c) a metal catalyst, and (d) an additive represented by the formula: MXn, wherein M is an element belonging to any one of Group 1, Group 2, Group 13, Group 14, and Group 15 in the periodic table, or NR, wherein R is hydrogen or a Corganic group; X is halogen; and n is a number of 1 to 5.

Method for producing carbonyl compound

The invention provides a novel hydrocarbon-containing carboxylic acid, hydrocarbon-containing sulfonic acid, hydrocarbon-containing sulfuric acid ester, or a salt thereof, and a surfactant. Each of them is a compound represented by the following formula (1):CRRR&#x2014;CRR&#x2014;X-Awherein Rto Rare each H or a monovalent substituent; at least one of Ror Ris a group represented by the formula: &#x2014;Y&#x2014;R; at least one of Ror Ris a group represented by the formula: &#x2014;X-A or a group represented by the formula: &#x2014;Y&#x2014;R; and As at the respective appearances are the same as or different from each other, and are each &#x2014;COOM, &#x2014;SOM, or &#x2014;OSOM.

Hydrocarbon-containing carboxylic acid, hydrocarbon-containing sulfonic acid, hydrocarbon-containing sulfuric acid ester or salt thereof, and surfactant

A sulfuric acid ester containing a plurality of carbonyl groups or a salt thereof, and a surfactant. The sulfuric acid ester is a compound represented by the following formula:R&#x2014;C(&#x2550;O)&#x2014;R&#x2014;C(&#x2550;O)&#x2014;R&#x2014;OSOX

Growing community of inventors

Osaka, Japan

Satoru Yoneda