US 11,987,656 B2
Method for producing fluorinated polymer and method for producing fluorinated ion exchange polymer
Susumu Saito, Tokyo (JP); Satoru Hommura, Tokyo (JP); and Hiroyuki Watabe, Tokyo (JP)
Assigned to AGC Inc., Tokyo (JP)
Filed by AGC Inc., Tokyo (JP)
Filed on Oct. 2, 2020, as Appl. No. 17/061,703.
Application 17/061,703 is a continuation of application No. PCT/JP2019/019567, filed on May 16, 2019.
Claims priority of application No. 2018-096465 (JP), filed on May 18, 2018.
Prior Publication US 2021/0070903 A1, Mar. 11, 2021
Int. Cl. C08F 216/38 (2006.01); C08F 214/18 (2006.01); C08J 5/22 (2006.01); H01M 8/1004 (2016.01); H01M 8/1039 (2016.01); H01M 8/1088 (2016.01); H01M 8/10 (2016.01)
CPC C08F 214/184 (2013.01) [C08F 216/38 (2013.01); C08J 5/225 (2013.01); H01M 8/1004 (2013.01); H01M 8/1039 (2013.01); H01M 8/1088 (2013.01); C08J 2327/12 (2013.01); H01M 2008/1095 (2013.01)] 10 Claims
 
1. A method for producing a fluorinated polymer, the method comprising:
synthesizing a perfluoromonomer represented by formula m11 to obtain a crude product C1 further containing a fluorinated monomer m11H represented by formula m21, and/or synthesizing a perfluoromonomer represented by formula m12 to obtain a crude product C2 further containing a fluorinated monomer m12H represented by formula m22;
purifying the crude product C1 to adjust a content of the fluorinated monomer m11H to obtain a monomer composition M11 containing the perfluoromonomer m11 and the fluorinated monomer m11H, and/or purifying the crude product C2 to adjust a content of the fluorinated monomer m12H to obtain a monomer composition M12 containing the perfluoromonomer m12 and the fluorinated monomer m12H;
mixing tetrafluoroethylene, at least one of the monomer composition M11 and the monomer composition M12 wherein a total amount of the fluorinated monomer m11H and the fluorinated monomer m12H to a total amount of the monomer composition M11 and the monomer composition M12 is from 10 to 1,100 ppm, and at least one monomer selected from the group consisting of a monomer represented by formula m31, a monomer represented by formula m32, a monomer represented by formula m33, a monomer represented by formula m34, a monomer represented by formula m35, a monomer represented by formula m36, and a monomer represented by formula m37, thereby obtaining a raw material mixture wherein a proportion of the total amount of the monomer composition M11 and the monomer composition M12 in a total amount of all monomers contained in the raw material mixture is from 40 to 80 mol %; and
polymerizing the raw material mixture:

OG Complex Work Unit Chemistry
where
R11, R12 and R14 are each independently a fluorine atom, a C1-10 perfluoroalkyl group, or a group having an etheric oxygen atom between carbon-carbon atoms in a C2-10 perfluoroalkyl group, and
R13 is a single bond, a C1-10 perfluoroalkylene group or a group having an etheric oxygen atom between carbon-carbon atoms in a C2-10 perfluoroalkylene group;

OG Complex Work Unit Chemistry
where
Q is a single bond, a C1-10 perfluoroalkylene group, or a group having an etheric oxygen atom between carbon-carbon atoms in a C2-10 perfluoroalkylene group,
q is 0 or 1,
Y1 is a fluorine atom or a monovalent perfluoroorganic group,
Q1 is a perfluoroalkylene group which optionally has an etheric oxygen atom,
Q2 is a single group, or a perfluoroalkylene group which optionally has an etheric oxygen atom,
m is 0 or 1, and when p is 0, m is 0,
p is 0 or 1,
n is an integer of from 1 to 12,
X is a fluorine atom or a trifluoromethyl group,
r is an integer of from 1 to 3,
t is 0 or 1,
s is an integer of from 1 to 12,
RF1 and RF2 are each independently a C1-3 perfluoroalkylene group, and
RF3 is a C1-6 perfluoroalkylene group.