WO2003106515A1 - スルホン酸官能基含有フッ素化単量体、それを含有する含フッ素共重合体、およびイオン交換膜 - Google Patents
スルホン酸官能基含有フッ素化単量体、それを含有する含フッ素共重合体、およびイオン交換膜 Download PDFInfo
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- WO2003106515A1 WO2003106515A1 PCT/JP2003/007603 JP0307603W WO03106515A1 WO 2003106515 A1 WO2003106515 A1 WO 2003106515A1 JP 0307603 W JP0307603 W JP 0307603W WO 03106515 A1 WO03106515 A1 WO 03106515A1
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- Prior art keywords
- monomer
- functional group
- sulfonic acid
- acid functional
- mol
- Prior art date
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- 239000000178 monomer Substances 0.000 title claims abstract description 83
- 229920001577 copolymer Polymers 0.000 title claims description 43
- 239000003014 ion exchange membrane Substances 0.000 title claims description 19
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 title abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 27
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 15
- 239000001257 hydrogen Substances 0.000 claims abstract description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 7
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 4
- 125000000542 sulfonic acid group Chemical group 0.000 claims description 50
- 239000012528 membrane Substances 0.000 claims description 21
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 10
- 239000003792 electrolyte Substances 0.000 claims description 10
- 239000011737 fluorine Substances 0.000 claims description 10
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 10
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 7
- 239000005977 Ethylene Substances 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 229920002313 fluoropolymer Polymers 0.000 claims description 2
- 239000004811 fluoropolymer Substances 0.000 claims 1
- 229910052740 iodine Inorganic materials 0.000 abstract description 3
- 229910052794 bromium Inorganic materials 0.000 abstract description 2
- 125000006527 (C1-C5) alkyl group Chemical group 0.000 abstract 1
- 238000000034 method Methods 0.000 description 32
- 150000001875 compounds Chemical class 0.000 description 26
- 239000011734 sodium Substances 0.000 description 20
- 238000006116 polymerization reaction Methods 0.000 description 19
- 239000000243 solution Substances 0.000 description 18
- 230000015572 biosynthetic process Effects 0.000 description 17
- 239000010408 film Substances 0.000 description 15
- 238000003786 synthesis reaction Methods 0.000 description 15
- 239000002904 solvent Substances 0.000 description 11
- -1 IV Chemical class 0.000 description 10
- 238000005342 ion exchange Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 7
- 239000000460 chlorine Substances 0.000 description 6
- 239000005518 polymer electrolyte Substances 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- PGFXOWRDDHCDTE-UHFFFAOYSA-N hexafluoropropylene oxide Chemical compound FC(F)(F)C1(F)OC1(F)F PGFXOWRDDHCDTE-UHFFFAOYSA-N 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 229920001940 conductive polymer Polymers 0.000 description 3
- 238000007334 copolymerization reaction Methods 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 239000003995 emulsifying agent Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007720 emulsion polymerization reaction Methods 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000005457 ice water Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 238000010557 suspension polymerization reaction Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- ZVJOQYFQSQJDDX-UHFFFAOYSA-N 1,1,2,3,3,4,4,4-octafluorobut-1-ene Chemical compound FC(F)=C(F)C(F)(F)C(F)(F)F ZVJOQYFQSQJDDX-UHFFFAOYSA-N 0.000 description 1
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- NMUWSGQKPAEPBA-UHFFFAOYSA-N 1,2-dibutylbenzene Chemical compound CCCCC1=CC=CC=C1CCCC NMUWSGQKPAEPBA-UHFFFAOYSA-N 0.000 description 1
- FCBJLBCGHCTPAQ-UHFFFAOYSA-N 1-fluorobutane Chemical compound CCCCF FCBJLBCGHCTPAQ-UHFFFAOYSA-N 0.000 description 1
- OHMHBGPWCHTMQE-UHFFFAOYSA-N 2,2-dichloro-1,1,1-trifluoroethane Chemical compound FC(F)(F)C(Cl)Cl OHMHBGPWCHTMQE-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- DASQIKOOFDJYKA-UHFFFAOYSA-N CCIF Chemical compound CCIF DASQIKOOFDJYKA-UHFFFAOYSA-N 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 229920003935 Flemion® Polymers 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229920000557 Nafion® Polymers 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- KQWSSQMZTGTWIP-UHFFFAOYSA-N S(=O)(=O)(C(F)(F)F)O.P(O)(O)=O Chemical compound S(=O)(=O)(C(F)(F)F)O.P(O)(O)=O KQWSSQMZTGTWIP-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000012986 chain transfer agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002322 conducting polymer Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical group FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical compound FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 150000002497 iodine compounds Chemical class 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011328 necessary treatment Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 125000005010 perfluoroalkyl group Chemical group 0.000 description 1
- 229920005548 perfluoropolymer Polymers 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229920000307 polymer substrate Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000003930 superacid Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000013076 target substance Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 150000003509 tertiary alcohols Chemical class 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
- C07C309/01—Sulfonic acids
- C07C309/02—Sulfonic acids having sulfo groups bound to acyclic carbon atoms
- C07C309/03—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
- C07C309/07—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton containing oxygen atoms bound to the carbon skeleton
- C07C309/09—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton containing oxygen atoms bound to the carbon skeleton containing etherified hydroxy groups bound to the carbon skeleton
- C07C309/10—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton containing oxygen atoms bound to the carbon skeleton containing etherified hydroxy groups bound to the carbon skeleton with the oxygen atom of at least one of the etherified hydroxy groups further bound to an acyclic carbon atom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
- C07C309/78—Halides of sulfonic acids
- C07C309/79—Halides of sulfonic acids having halosulfonyl groups bound to acyclic carbon atoms
- C07C309/82—Halides of sulfonic acids having halosulfonyl groups bound to acyclic carbon atoms of a carbon skeleton substituted by singly-bound oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/18—Monomers containing fluorine
- C08F214/186—Monomers containing fluorine with non-fluorinated comonomers
Definitions
- the present invention relates to a novel fluorinated monomer containing a sulfonic acid functional group, and further relates to a fluorinated copolymer and an ion exchange membrane using the same.
- Copolymers such as Naphion (trademark of DuPont) and Flemion (trademark of Asahi Glass Co., Ltd.) in which sulfonic acid groups are bonded to perfluoropolymer chains are used as ion-exchange membranes used for salt electrolysis.
- sulfonic acid groups are bonded to perfluoropolymer chains
- These electrolyte membranes are generally used by processing a copolymer of a monomer containing a sulfonic acid group and an ethylenically unsaturated monomer represented by tetrafluoroethylene into a membrane. .
- the physical properties required of an electrolyte membrane are (1) large ion exchange capacity and (2) large mechanical strength of the membrane.
- a method of providing a plurality of proton dissociable groups in one monomer molecule is considered. For example, alpha, alpha, -.
- the present invention solves the above-mentioned problems, and provides a novel monomer having a structure having a plurality of proton-dissociable groups per monomer molecule.
- the present invention has the general formula:
- k is 2.
- the present invention also provides a fluorinated monomer comprising the sulfonic acid functional group-containing fluorinated monomer. Related to polymers.
- the present invention further provides 0.1 to 50 mol% of the sulfonic acid functional group-containing fluorinated monomer, and 50 to 99.9 mol% of a monomer having an ethylenically unsaturated bond copolymerizable therewith.
- a fluorinated copolymer comprising:
- the monomer having an ethylenically unsaturated bond preferably contains tetrafluoroethylene.
- the present invention also relates to an ion-exchange membrane having a thickness of 5 to 500 / im and comprising the above-mentioned fluorinated copolymer.
- the present invention further relates to an electrolyte membrane for a fuel cell comprising the ion exchange membrane.
- Process sheet for k 2
- Process for compounds with k 2
- ⁇ - ⁇ CF 2 CF-0-CF 2 CF (S0 2 F) 2
- CF 2 CF— O— CF 2 CF (CF 3 )-O— CF 2 CF (S0 2 F) 2
- ⁇ -CF 2 CF-0-CF 2 CF (CF 3 ) -0- CF 2 C (S0 2 F):
- M in the O (M) 1 / L group is a monovalent to trivalent metal, a monovalent metal such as an alkali metal (Na, Li, K :, Cs, etc.), an alkaline earth metal (Mg, Bivalent metals such as Ca) or trivalent metals such as A1.
- Na or K is preferably used because it is industrially easy to handle.
- R in the OR group is an alkyl group having 1 to 5 carbon atoms, and the alkyl group may include an element that is neither carbon nor hydrogen.
- the R include one CH 3 , one C 2 H 5 , one CH 2 CF 3, and the like. Among them, CH 3 is preferably used because it is industrially easy to handle.
- the “element that is neither carbon nor hydrogen” is a hetero atom such as halogen, oxygen, and nitrogen.
- B in the A- (S0 2 R f) a B group, Ri metal der hydrogen or a monovalent, H, L i, and the like Na.
- H is preferably used.
- R i in the A- (S0 2 R f) a B group, a perfluorinated alkyl group indicates one CF 3, and the like one C 2 F 5.
- X in the (XSO 2 ) k group of the sulfonic acid functional group-containing fluorinated monomer it is easy to produce a copolymer with a monomer having an ethylenically unsaturated bond described below.
- OLi, ONa and OK are preferable, and F and ONa are more preferable.
- Y in the CYi group of the sulfonic acid functional group-containing fluorinated monomer is F, C] or CF 3 is used.
- CF 3 is preferably used because it can be easily manufactured.
- Ra in the (CF 2 ) m group of the sulfonic acid functional group-containing fluorinated monomer is 0 to 5, preferably 1 to 3, and more preferably 1. If m exceeds 5, the equivalent weight (EW) becomes large, and the performance as an electrolyte membrane cannot be sufficiently exhibited.
- n is 0 to 5, preferably 0 to 3, and more preferably 0 or 1.
- EW equivalent weight
- the fluorinated polymer comprising the sulfonic acid functional group-containing fluorinated monomer of the present invention is also represented by ⁇ of the present invention.
- the sulfonic acid functional group-containing fluorinated monomer of the present invention can be usually used as a copolymer with a copolymerizable monomer having an ethylenically unsaturated bond.
- the copolymerizable monomer having an ethylenically unsaturated bond include: hydrocarbon-based olefins such as ethylene and propylene; butyl fluoride; vinylidene fluoride; ethylene with trisoleole; ethylene with chlorotrifleone; Fluoroolefins such as fluoroethylene, hexafluoropropene, and perfluoro-1-butene can be mentioned, and each can be used alone or in combination of two or more.
- CF 2 CF I
- CF 2 CF 2 I
- CF 2 CF 2 I
- CF 2 CF—O— (CFCF 3 CF 2 ) ⁇ CF 2 CF 2 I
- other unsaturated monomers such as dibutylbenzene Monomer having two or more, monomer containing cyano group, (fluorinated) vinyl ethers, (fluorinated) vinyl esters, (fluorinated) acrylic acid Stels, (fluorinated) methacrylates, and the like can be used.
- composition of the fluorocopolymer, the polymerized units based on a sulfonic acid functional group-containing fluorinated monomer of the present invention from 0.1 to 5 is preferably 0 mole 0/0, more preferably the lower limit is 3 Mol%, the upper limit is 40 mol%.
- the polymerized unit based on the monomer having an ethylenically unsaturated bond is preferably 50 to 99.9 mol%, more preferably 60 mol% as the lower limit and 97 mol% as the upper limit. It is.
- the composition of the fluorinated copolymer is usually controlled by a known method such as selection of the concentration of the sulfonic acid functional group-containing fluorinated monomer during polymerization, or selection of polymerization pressure and polymerization temperature. If the amount of the polymerized units based on the sulfonic acid functional group-containing fluorinated monomer of the present invention is less than 0.1 mol%, the effect of including the sulfonic acid functional group-containing fluorinated monomer of the present invention tends not to be obtained. ,
- the composition of the fluorinated copolymer is based on the polymerization unit based on the sulfonic acid functional group-containing fluorinated monomer of the present invention. It is more preferable that the lower limit is 3 mol% and the upper limit is 40 mol%. Also.
- the preferably polymerized units based on a monomer having an ethylenically unsaturated bond is 5 0-9 9 mol%, and more preferably the lower limit is 6 0 Monore 0/0, the upper limit is 9 7 moles %.
- the amount of the polymerized unit based on the sulfonic acid functional group-containing fluorinated monomer of the present invention is less than 1 mol%, sufficient ion exchange capacity tends to be hardly obtained, and if it exceeds 50 mol%, sufficient strength is obtained. There is a tendency that it is difficult to obtain a thin film.
- the monomer having an ethylenically unsaturated bond preferably contains tetrafluoroethylene.
- the composition of the obtained fluorine-containing copolymer is preferably such that the polymerization unit based on the sulfonic acid functional group-containing fluorinated monomer of the present invention is 3 to 40 mol%, more preferably the lower limit. Is 5 mol% and the upper limit is 30 mol%.
- the polymerization unit based on the monomer having an ethylenic unsaturated bond containing tetrafluoroethylene is preferably 60 to 97 mol%, more preferably the lower limit is 70 mol%, and the upper limit is 70 mol%.
- the weight based on the monomer having an ethylenic unsaturated bond containing tetrafluoroethylene If the combined unit is less than 60 mol%, the strength of the formed electrolyte membrane tends to be insufficient, and if it exceeds 97 mol%, the ion exchange capacity tends to be insufficient. In addition, it is more preferable that the monomer having an ethylenic unsaturated bond containing tetrafluoroethylene is composed of only tetrafluoroethylene, because it is excellent in chemical and electrochemical stability.
- the fluorinated copolymer obtained by the present invention is used as an ion exchange membrane, and its applications include chemical sensors, separation membranes, polymer super strong acid catalysts, and proton transport polymer electrolytes for fuel cells. .
- EW equivalent weight
- the molecular weight of the fluorinated copolymer need not be particularly limited, but when used in the form of a film, it is advantageous to have an appropriate molecular weight, and the number average molecular weight is 500,000 to 300,000. Are preferred.
- the molecular weight can be controlled by controlling the concentration of the polymerization initiator, the polymerization temperature, the polymerization pressure, and the addition of a chain transfer agent.
- the polymerization method is not particularly limited, well-known emulsion polymerization, solution polymerization, suspension polymerization and the like are possible.
- the emulsion polymerization means that a sulfonic acid functional group-containing fluorinated monomer of the present invention and a monomer having an ethylenically unsaturated bond copolymerizable with the sulfonic acid functional group-containing monomer of the present invention are coexistent, essentially using water as a medium, A method for obtaining the desired copolymer by copolymerization in the presence of a radical generator, if necessary, in a copolymer system formed by adding an emulsifier selected as necessary.
- the emulsifier is not particularly limited, but one having a structure having a dissociable polar group such as a carboxyl group at the terminal of a perfluoroalkyl / alkyl group is preferably used, and the emulsifier is used in an amount of 0.0 based on the total mass of the monomer. A range of 1 to 30% by mass is preferably used.
- the solution polymerization means copolymerization with the sulfonic acid functional group-containing fluorinated monomer in the presence of a radical generator in a solvent capable of dissolving the sulfonic acid functional group-containing fluorinated monomer of the present invention. Copolymerized with a monomer having a possible ethylenically unsaturated bond A method for obtaining a copolymer by the method will be described.
- suspension polymerization refers to a method in which droplets of this monomer or a solution thereof are suspended in a solvent that hardly dissolves the sulfonic acid functional group-containing fluorinated monomer of the present invention. If necessary, a method for obtaining a copolymer by copolymerizing this monomer with a monomer having a copolymerizable ethylenically unsaturated bond in the presence of a radical generator will be described.
- the radical generator is not particularly limited, but a peroxide-based radical generator, a redox-based radical generator, an iodine compound, an azo compound, ultraviolet light, ionizing radiation, and the like can be used. Alternatively, a combination of these may be used.
- the polymerization pressure is not particularly limited, but is preferably in the range of 0.01 to 20 MPa depending on the purpose of controlling the molecular weight of the polymer or the purpose of controlling the polymerization rate. used.
- the polymerization temperature is not particularly limited, it is preferably in the range of 120 to 200 ° C. depending on the decomposition temperature of the radical generator used and the melting point of the solvent used. .
- a non-telogenic solvent is easier to obtain a high molecular weight fluorine-containing copolymer, so that a hydrochlorofluorocarbon, a hide fluorocarbon, a fluorocarbon, etc.
- Halogen-substituted hydrocarbon solvents acids such as acetic acid and trifluoroacetic acid, and their halogen-substituted and esterified products, ketones, and tertiary alcohols are preferably used.
- a surfactant In each of the above polymerization methods, a surfactant, an acid acceptor, and the like may be added as necessary.
- the ion exchange membrane comprising the fluorocopolymer of the present invention preferably has a thickness of 5 to 50 Ozm.
- the thickness is preferably 5 to 50 ⁇ m, more preferably 1 to 50 ⁇ m. 0 / zm, upper limit 10 O / zm. If the film thickness is less than 5 jum, the mechanical strength will be low, handling and properties will be poor, and gas permeability will tend to be significantly deteriorated.If it exceeds 50, the film resistance will increase. Therefore, there is a tendency that the performance cannot be sufficiently exhibited.
- Known techniques can be used for obtaining such an ion exchange membrane.
- the fluorinated copolymer of the present invention contains a fluorosulfonyl group as a sulfonic acid functional group
- ordinary melt extrusion molding is possible, and the T-die is used at a temperature not lower than the melting point of the fluorinated copolymer.
- the fluorine-containing copolymer in a molten state extruded from such as is processed into a thin film and cooled to obtain a film.
- this membrane can be treated with a strong alkaline solution or the like to hydrolyze the fluorosulfonyl group, thereby obtaining a proton conductive polymer electrolyte membrane having a sulfonic acid functional group.
- a strong alkaline solution or the like to hydrolyze the fluorosulfonyl group, thereby obtaining a proton conductive polymer electrolyte membrane having a sulfonic acid functional group.
- the fluorinated copolymer of the present invention has a sulfonic acid or a salt-type functional group as a sulfonic acid functional group
- a method disclosed in Japanese Patent Publication No. 11-36569 It is possible to obtain a proton-conducting polymer electrolyte membrane by melting and press-molding using a polymer.
- the fluorine-containing copolymer of the present invention containing a sulfonic acid or a salt-type functional group as a sulfonic acid functional group was polarized using the method described in JP-A-1-217042. It is possible to obtain a proton conductive polymer electrolyte membrane by dissolving the solvent by applying pressure and heat to a solvent, dissolving the solution, casting the solution on a substrate, and drying the solution.
- the ion exchange membrane is subjected to a pretreatment such as immersion in hydrolysis or acid, it is converted to one so 3 H type.
- This film was subjected to AC four-terminal measurement in pure water at 25, and the ionic conductivity was measured. The larger the ion conductivity, the better the ion exchange capacity of the electrolyte membrane.
- This method is known and reported by DD DesMarteau et al. (Journal of Fluorine Chemistry, 66 (1994) 101-104).
- a flask with 2.9 g (0.05 mol) of KF dried at 300 ° C and 200 g of diglyme were charged, and 244 g (1 mol 1 ⁇ ) of cyclic saltone (1 mol ⁇ ⁇ ) was added to the flask while stirring and flowing dry nitrogen. ⁇ ) was slowly added dropwise. Further, 170 g (1.02 mol) of hexafluoropropylene oxide (HFPO) was added dropwise and reacted. This solution was separated, and the lower layer reaction product was rectified to obtain 340 g of the following compound.
- HFPO hexafluoro
- hexafluorop 5 g of a mouth pen was introduced, and the temperature was raised to 60 ° C. Thereafter, tetrafluoroethylene was introduced at a gauge pressure up to 0.5 MPa to initiate polymerization. Tetrafluoroethylene was introduced so as to keep the pressure constant, and the polymerization was stopped when the introduction amount reached 5 g. Thereafter, the stirring was stopped and the system pressure was released. Subsequently, trifluoroacetic acid was volatilized and recovered under reduced pressure to obtain a mixture of an unreacted monomer and a copolymer.
- Nafion 117 having only one sulfonic acid group per molecule (manufactured by DuPont) was neutralized with NaOH to form a Na salt type, and a film was formed in the same manner as in Example 6. The film thickness is There were 50. The obtained film was evaluated according to the above evaluation method. Table 1 shows the results.
- the sulfonic acid functional group-containing fluorinated monomer of the present invention has a plurality of sulfonic acid functional groups per molecule, when used as a fluorinated copolymer, a monomer having a conventional sulfonic acid functional group is used.
- the effect of imparting high ionic conductivity and mechanical strength can be obtained with a smaller polymerization ratio than that.
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- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
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Abstract
Description
Claims
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JP2004513344A JP4412171B2 (ja) | 2002-06-14 | 2003-06-16 | スルホン酸官能基含有フッ素化単量体、それを含有する含フッ素共重合体、およびイオン交換膜 |
AU2003241669A AU2003241669A1 (en) | 2002-06-14 | 2003-06-16 | Fluorinated monomer having sulfonate functional group, fluorinated copolymer therefrom and ion exchange membrane |
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JP2002174736 | 2002-06-14 | ||
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US7297815B2 (en) | 2003-07-02 | 2007-11-20 | Asahi Glass Company, Limited | Process for producing fluorinated sulfonyl fluoride compound |
JPWO2005085187A1 (ja) * | 2004-03-08 | 2007-12-13 | 旭化成株式会社 | フッ素化合物の製造方法 |
WO2008090990A1 (ja) * | 2007-01-26 | 2008-07-31 | Asahi Glass Company, Limited | ポリマー、固体高分子形燃料電池用固体高分子電解質膜および膜電極接合体 |
JP2008202039A (ja) * | 2007-01-26 | 2008-09-04 | Asahi Glass Co Ltd | ポリマー、固体高分子形燃料電池用固体高分子電解質膜および膜電極接合体 |
EP1914824A4 (en) * | 2005-07-27 | 2008-11-19 | Asahi Glass Co Ltd | ELECTROLYTE MATERIAL FOR A FESTPOLYMER FUEL CELL, ELECTROLYTE MEMBRANE AND MEMBRANE ELECTRODE ASSEMBLY |
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JP2022169648A (ja) * | 2017-09-01 | 2022-11-09 | Agc株式会社 | フルオロスルホニル基含有化合物、フルオロスルホニル基含有モノマー及びそれらの製造方法 |
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- 2003-06-16 WO PCT/JP2003/007603 patent/WO2003106515A1/ja active Application Filing
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JP4993462B2 (ja) * | 2004-03-08 | 2012-08-08 | 旭化成株式会社 | フッ素化合物の製造方法 |
JPWO2005085187A1 (ja) * | 2004-03-08 | 2007-12-13 | 旭化成株式会社 | フッ素化合物の製造方法 |
JP5141251B2 (ja) * | 2005-07-27 | 2013-02-13 | 旭硝子株式会社 | フルオロスルホニル基含有化合物、その製造方法およびそのポリマー |
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EP1916237A4 (en) * | 2005-07-27 | 2008-11-26 | Asahi Glass Co Ltd | A COMPOSITION CONTAINING A FLUORESULFONYL GROUP, METHOD FOR THE PRODUCTION THEREOF AND POLYMER THEREOF |
US7531610B2 (en) | 2005-07-27 | 2009-05-12 | Asahi Glass Company, Limited | Fluorosulfonyl group-containing compound, method for its production and polymer thereof |
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US8097383B2 (en) | 2005-07-27 | 2012-01-17 | Asahi Glass Company, Limited | Electrolyte material for polymer electrolyte fuel cells, electrolyte membrane and membrane/electrode assembly |
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JP5499478B2 (ja) * | 2007-01-26 | 2014-05-21 | 旭硝子株式会社 | ポリマー、固体高分子形燃料電池用固体高分子電解質膜および膜電極接合体 |
JP2008202039A (ja) * | 2007-01-26 | 2008-09-04 | Asahi Glass Co Ltd | ポリマー、固体高分子形燃料電池用固体高分子電解質膜および膜電極接合体 |
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WO2020129991A1 (ja) * | 2018-12-19 | 2020-06-25 | Agc株式会社 | ポリマー、ポリマーの製造方法及び膜の製造方法 |
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CN112510236B (zh) * | 2020-11-30 | 2022-04-15 | 中国石油大学(北京) | 质子交换膜及其制备方法和应用 |
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WO2024068677A1 (en) | 2022-09-28 | 2024-04-04 | Solvay Specialty Polymers Italy S.P.A. | Perfluoropolyether polymers |
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JP4412171B2 (ja) | 2010-02-10 |
JPWO2003106515A1 (ja) | 2005-10-13 |
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