Daikin Industries, Ltd.

Shinnosuke Nitta

Hirokazu Aoyama

Yosuke Kishikawa

Akiyoshi Yamauchi

Sumi Ishihara

Masahiro Higashi

Satoru Yoneda

Marina Nakano

Takahiro Kitahara

Yuuji Tanaka

Taku Yamanaka

Taketo Kato

Hirotoshi Yoshida

Yoshinori Nanba

Masamichi Sukegawa

Manabu Fujisawa

Kenji Ichikawa

Hiroyuki Sato

Kengo Ito

Yohei Fujimoto

Chiaki Okui

Kazuya Asano

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 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 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.

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Osaka, Japan

Shinnosuke Nitta