US 12,012,470 B2
Production method for fluoropolymer, surfactant for polymerization, and use of surfactant
Taketo Kato, Osaka (JP); Satoru Yoneda, Osaka (JP); Manabu Fujisawa, Osaka (JP); Kazuya Asano, Osaka (JP); Takahiro Kitahara, Osaka (JP); Masahiro Higashi, Osaka (JP); Akiyoshi Yamauchi, Osaka (JP); Sumi Ishihara, Osaka (JP); Yosuke Kishikawa, Osaka (JP); Shinnosuke Nitta, Osaka (JP); Marina Nakano, Osaka (JP); Hirotoshi Yoshida, Osaka (JP); Yoshinori Nanba, Osaka (JP); Kengo Ito, Osaka (JP); Chiaki Okui, Osaka (JP); Hirokazu Aoyama, Osaka (JP); Masamichi Sukegawa, Osaka (JP); Taku Yamanaka, Osaka (JP); Yuuji Tanaka, Osaka (JP); Kenji Ichikawa, Osaka (JP); Yohei Fujimoto, Osaka (JP); and Hiroyuki Sato, Osaka (JP)
Assigned to DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Oct. 26, 2022, as Appl. No. 17/974,402.
Application 17/974,402 is a division of application No. 16/499,047, previously published as PCT/JP2018/013620, filed on Mar. 30, 2018.
Claims priority of application No. 2017-073084 (JP), filed on Mar. 31, 2017; application No. 2017-248552 (JP), filed on Dec. 25, 2017; and application No. 2018-020462 (JP), filed on Feb. 7, 2018.
Prior Publication US 2023/0101829 A1, Mar. 30, 2023
Int. Cl. C08F 14/26 (2006.01); C08K 5/098 (2006.01); C08K 5/42 (2006.01)
CPC C08F 14/26 (2013.01) [C08K 5/098 (2013.01); C08K 5/42 (2013.01); C08K 2201/014 (2013.01); C08K 2201/019 (2013.01)] 19 Claims
 
1. A composition comprising a fluoropolymer wherein the amount of a compound represented by formula (3) is 100 ppb or less relative to the fluoropolymer:
(H—(CF2)8—SO3)qM2  (3),
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; and
wherein the composition further comprises:
at least one of a compound represented by formula (4) or a compound represented by formula (4′), with the compound represented by formula (4) being in an amount of 100 ppb to 10000 ppb relative to the fluoropolymer and with the compound represented by formula (4′) being in an amount of 100 ppb to 10000 ppb relative to the fluoropolymer, or
at least one of a compound represented by formula (5) or a compound represented by formula (5′), with the compound represented by formula (5) being in an amount of 100 ppb or more relative to the fluoropolymer and with the compound represented by formula (5′) being in an amount of 100 ppb or more relative to the fluoropolymer,
the formula (4) being (H—(CF2)7—COO)pM1, wherein M1 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 p is 1 or 2,
the formula (4′) being (H—(CF2)8—COO)pM1, wherein M1 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 p is 1 or 2,
the formula (5) being (H—(CF2)13—COO)pM1, wherein M1 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 p is 1 or 2,
the formula (5′) being (H—(CF2)14—COO)pM1, wherein M1 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 p is 1 or 2.