WO2023058331A1 - ヘキサフルオロ-1,3-ブタジエンの製造方法 - Google Patents
ヘキサフルオロ-1,3-ブタジエンの製造方法 Download PDFInfo
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- WO2023058331A1 WO2023058331A1 PCT/JP2022/031101 JP2022031101W WO2023058331A1 WO 2023058331 A1 WO2023058331 A1 WO 2023058331A1 JP 2022031101 W JP2022031101 W JP 2022031101W WO 2023058331 A1 WO2023058331 A1 WO 2023058331A1
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- Prior art keywords
- butadiene
- hexafluoro
- fraction
- tetrachlorohexafluorobutane
- reaction
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- LGPPATCNSOSOQH-UHFFFAOYSA-N 1,1,2,3,4,4-hexafluorobuta-1,3-diene Chemical compound FC(F)=C(F)C(F)=C(F)F LGPPATCNSOSOQH-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 38
- IRHYACQPDDXBCB-UHFFFAOYSA-N 1,2,3,4-tetrachloro-1,1,2,3,4,4-hexafluorobutane Chemical compound FC(F)(Cl)C(F)(Cl)C(F)(Cl)C(F)(F)Cl IRHYACQPDDXBCB-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000003112 inhibitor Substances 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- 238000006298 dechlorination reaction Methods 0.000 claims abstract description 28
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 27
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 27
- 239000003960 organic solvent Substances 0.000 claims abstract description 24
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011701 zinc Substances 0.000 claims abstract description 17
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 17
- 125000001309 chloro group Chemical group Cl* 0.000 claims abstract description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 24
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical group C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-UHFFFAOYSA-N 0.000 claims description 15
- 150000002978 peroxides Chemical class 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 9
- BTANRVKWQNVYAZ-UHFFFAOYSA-N butan-2-ol Chemical compound CCC(C)O BTANRVKWQNVYAZ-UHFFFAOYSA-N 0.000 claims description 9
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 6
- 150000003254 radicals Chemical group 0.000 claims description 6
- 239000002516 radical scavenger Substances 0.000 claims description 5
- MGNZXYYWBUKAII-UHFFFAOYSA-N cyclohexa-1,3-diene Chemical group C1CC=CC=C1 MGNZXYYWBUKAII-UHFFFAOYSA-N 0.000 claims description 4
- 230000000977 initiatory effect Effects 0.000 claims description 4
- 125000003158 alcohol group Chemical group 0.000 claims description 2
- KHFGPBNEILANTD-UHFFFAOYSA-N 1,1,1,2-tetrachloro-2,3,3,4,4,4-hexafluorobutane Chemical compound FC(F)(F)C(F)(F)C(F)(Cl)C(Cl)(Cl)Cl KHFGPBNEILANTD-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 239000012535 impurity Substances 0.000 description 20
- 229920000642 polymer Polymers 0.000 description 20
- 238000004817 gas chromatography Methods 0.000 description 11
- 238000004458 analytical method Methods 0.000 description 9
- 239000000460 chlorine Substances 0.000 description 9
- 239000006227 byproduct Substances 0.000 description 7
- YHQGMYUVUMAZJR-UHFFFAOYSA-N α-terpinene Chemical compound CC(C)C1=CC=C(C)CC1 YHQGMYUVUMAZJR-UHFFFAOYSA-N 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 239000002243 precursor Substances 0.000 description 6
- 238000007086 side reaction Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- WSTYNZDAOAEEKG-UHFFFAOYSA-N Mayol Natural products CC1=C(O)C(=O)C=C2C(CCC3(C4CC(C(CC4(CCC33C)C)=O)C)C)(C)C3=CC=C21 WSTYNZDAOAEEKG-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- MOYAFQVGZZPNRA-UHFFFAOYSA-N Terpinolene Chemical compound CC(C)=C1CCC(C)=CC1 MOYAFQVGZZPNRA-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 3
- 150000001408 amides Chemical class 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000009257 reactivity Effects 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- YKFLAYDHMOASIY-UHFFFAOYSA-N γ-terpinene Chemical compound CC(C)C1=CCC(C)=CC1 YKFLAYDHMOASIY-UHFFFAOYSA-N 0.000 description 3
- UZFMOKQJFYMBGY-UHFFFAOYSA-N 4-hydroxy-TEMPO Chemical compound CC1(C)CC(O)CC(C)(C)N1[O] UZFMOKQJFYMBGY-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- KYKAJFCTULSVSH-UHFFFAOYSA-N chloro(fluoro)methane Chemical compound F[C]Cl KYKAJFCTULSVSH-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 150000004292 cyclic ethers Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011067 equilibration Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- HVLLSGMXQDNUAL-UHFFFAOYSA-N triphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 HVLLSGMXQDNUAL-UHFFFAOYSA-N 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- JILAKKYYZPDQBE-UHFFFAOYSA-N 1,1,2,2,3,3,4,4-octafluoro-1,4-diiodobutane Chemical compound FC(F)(I)C(F)(F)C(F)(F)C(F)(F)I JILAKKYYZPDQBE-UHFFFAOYSA-N 0.000 description 1
- RCGWWNMFBGSXJO-UHFFFAOYSA-N 1,1,2,3,4-pentafluorobuta-1,3-diene Chemical compound FC=C(F)C(F)=C(F)F RCGWWNMFBGSXJO-UHFFFAOYSA-N 0.000 description 1
- KDKGPLZMKATCHY-UHFFFAOYSA-N 1,1,4,4-tetrafluorobuta-1,3-diene Chemical compound FC(F)=CC=C(F)F KDKGPLZMKATCHY-UHFFFAOYSA-N 0.000 description 1
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- KSXVCHCOQPNPIR-UHFFFAOYSA-N 1-chloro-1,2,3,4,4-pentafluorobuta-1,3-diene Chemical compound FC(F)=C(F)C(F)=C(F)Cl KSXVCHCOQPNPIR-UHFFFAOYSA-N 0.000 description 1
- TUZVTRCMDIUEBE-UHFFFAOYSA-N 1-chloro-10h-phenothiazine Chemical compound S1C2=CC=CC=C2NC2=C1C=CC=C2Cl TUZVTRCMDIUEBE-UHFFFAOYSA-N 0.000 description 1
- HZPPZIINUHIWKA-UHFFFAOYSA-N 1-fluoro-10h-phenothiazine Chemical compound S1C2=CC=CC=C2NC2=C1C=CC=C2F HZPPZIINUHIWKA-UHFFFAOYSA-N 0.000 description 1
- IGPWAITWXGQPMD-UHFFFAOYSA-N 1-fluorobuta-1,3-diene Chemical compound FC=CC=C IGPWAITWXGQPMD-UHFFFAOYSA-N 0.000 description 1
- DGYYJSHANXEPSK-UHFFFAOYSA-N 1-methyl-10h-phenothiazine Chemical compound S1C2=CC=CC=C2NC2=C1C=CC=C2C DGYYJSHANXEPSK-UHFFFAOYSA-N 0.000 description 1
- VETPHHXZEJAYOB-UHFFFAOYSA-N 1-n,4-n-dinaphthalen-2-ylbenzene-1,4-diamine Chemical compound C1=CC=CC2=CC(NC=3C=CC(NC=4C=C5C=CC=CC5=CC=4)=CC=3)=CC=C21 VETPHHXZEJAYOB-UHFFFAOYSA-N 0.000 description 1
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- KWXXMLHQBFNLOR-UHFFFAOYSA-N 3,4-dichloro-1,1,2,3,4,4-hexafluorobut-1-ene Chemical compound FC(F)=C(F)C(F)(Cl)C(F)(F)Cl KWXXMLHQBFNLOR-UHFFFAOYSA-N 0.000 description 1
- OZAWCRZCYBVMBW-UHFFFAOYSA-N 4,4-dichloro-1,1,2,3,3,4-hexafluorobut-1-ene Chemical compound FC(F)=C(F)C(F)(F)C(F)(Cl)Cl OZAWCRZCYBVMBW-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- VDACCTGBJAMTDN-UHFFFAOYSA-N N'-acetyl-2-hydroxybenzohydrazide Chemical compound CC(=O)NNC(=O)C1=CC=CC=C1O VDACCTGBJAMTDN-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000000382 dechlorinating effect Effects 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- SKLVOJWBZJWSEN-UHFFFAOYSA-N n,n'-bis(2-hydroxyphenyl)oxamide Chemical compound OC1=CC=CC=C1NC(=O)C(=O)NC1=CC=CC=C1O SKLVOJWBZJWSEN-UHFFFAOYSA-N 0.000 description 1
- FTWUXYZHDFCGSV-UHFFFAOYSA-N n,n'-diphenyloxamide Chemical compound C=1C=CC=CC=1NC(=O)C(=O)NC1=CC=CC=C1 FTWUXYZHDFCGSV-UHFFFAOYSA-N 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- -1 terpene sulfide Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- QEDNBHNWMHJNAB-UHFFFAOYSA-N tris(8-methylnonyl) phosphite Chemical compound CC(C)CCCCCCCOP(OCCCCCCCC(C)C)OCCCCCCCC(C)C QEDNBHNWMHJNAB-UHFFFAOYSA-N 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/42—Use of additives, e.g. for stabilisation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/23—Preparation of halogenated hydrocarbons by dehalogenation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C21/00—Acyclic unsaturated compounds containing halogen atoms
- C07C21/02—Acyclic unsaturated compounds containing halogen atoms containing carbon-to-carbon double bonds
- C07C21/19—Halogenated dienes
- C07C21/20—Halogenated butadienes
Definitions
- the present invention relates to a method for producing hexafluoro-1,3-butadiene.
- Hexafluoro-1,3-butadiene is useful, for example, as an etching gas for microfabrication of semiconductors.
- Various methods are conventionally known for producing hexafluoro-1,3-butadiene.
- Patent Document 1 discloses a method of dechlorinating 1,2,3,4-tetrachlorohexafluorobutane in 2-propanol in the presence of zinc.
- Patent Document 2 discloses a method of dehalogenating 1,4-diiodoperfluorobutane in tetrahydrofuran in the presence of magnesium.
- An object of the present invention is to provide a production method capable of producing hexafluoro-1,3-butadiene in high yield.
- one aspect of the present invention is as follows [1] to [8].
- [1] In a reaction solution containing 1,2,3,4-tetrachlorohexafluorobutane, zinc, at least one of an antioxidant and a polymerization inhibitor, and an organic solvent, the above 1,2, A method for producing hexafluoro-1,3-butadiene, comprising a reaction step of performing a dechlorination reaction in which chlorine atoms are eliminated from 3,4-tetrachlorohexafluorobutane to produce hexafluoro-1,3-butadiene.
- the ratio of the total molar amount of the antioxidant and the polymerization inhibitor to the molar amount of the 1,2,3,4-tetrachlorohexafluorobutane is 0.01% or more and 10% or less
- [7] The method for producing hexafluoro-1,3-butadiene according to any one of [1] to [6], wherein the organic solvent is alcohol.
- [8] Production of hexafluoro-1,3-butadiene according to [7], wherein the alcohol is at least one of methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, and 2-butanol Method.
- FIG. 1 is a diagram illustrating reaction pathways in one embodiment of the method for producing hexafluoro-1,3-butadiene according to the present invention.
- 1 is a schematic diagram illustrating the configuration of a hexafluoro-1,3-butadiene production apparatus used in Examples and Comparative Examples.
- FIG. 1 is a diagram illustrating reaction pathways in one embodiment of the method for producing hexafluoro-1,3-butadiene according to the present invention.
- 1 is a schematic diagram illustrating the configuration of a hexafluoro-1,3-butadiene production apparatus used in Examples and Comparative Examples.
- FIG. 1 is a diagram illustrating reaction pathways in one embodiment of the method for producing hexafluoro-1,3-butadiene according to the present invention.
- 1 is a schematic diagram illustrating the configuration of a hexafluoro-1,3-butadiene production apparatus used in Examples and Comparative Examples.
- FIG. 1 is a diagram
- FIG. 1 shows a reaction route for producing hexafluoro-1,3-butadiene (C 4 F 6 ) from 1,2,3,4-tetrachlorohexafluorobutane (C 4 Cl 4 F 6 ) as a raw material. Description will be made with reference to this.
- the method for producing hexafluoro-1,3-butadiene according to the present embodiment includes 1,2,3,4-tetrachlorohexafluorobutane, zinc, at least one of an antioxidant and a polymerization inhibitor, A reaction for performing a dechlorination reaction in which chlorine atoms are eliminated from 1,2,3,4-tetrachlorohexafluorobutane to produce hexafluoro-1,3-butadiene in a reaction solution containing an organic solvent. Have a process.
- At least one of the antioxidant and the polymerization inhibitor suppresses chlorofluorocarbon impurities and by-products of the polymer, resulting in a high yield (for example, It is possible to produce hexafluoro-1,3-butadiene with a yield of 85% or more.
- the amount of hexafluoro-1,3-butadiene, which is the main product, and the amount of freon impurities, which are by-products, can be measured by analysis using gas chromatography.
- the production amount of the polymer is obtained by subtracting the quantitative production amount of hexafluoro-1,3-butadiene and the production amount of Freon impurities from the amount of 1,2,3,4-tetrachlorohexafluorobutane used. can be estimated by
- Fluorocarbon impurities include compounds represented by the chemical formula C4HxClyFz (where x, y, and z represent positive integers ).
- C 4 HF 5 pentafluoro-1,3-butadiene
- C 4 ClF 5 chloropentafluoro-1,3-butadiene
- tetrafluoro-1,3-butadiene C 4 H 2 F 4
- Dichlorohexafluorobutene C 4 Cl 2 F 6 (excluding the precursor 3,4-dichloro compound)
- Fluorocarbon impurities also include compounds represented by the chemical formula C 4 H a O b Cl c F d (a, b, c, and d represent positive integers). Examples include C 4 OF 6 , C 4 OCl 2 F 6 , and multimers thereof such as dimers and trimers. Further, as the polymer, a polymer of hexafluoro-1,3-butadiene, a polymer of 3,4-dichloro as a precursor, a polymer of hexafluoro-1,3-butadiene and 3,4- Copolymers of dichloroforms, polymers of chlorofluorocarbon impurities, and the like can be mentioned (see FIG. 1).
- hexafluoro-1,3-butadiene means "1,1,2,3,4,4-hexafluoro-1,3-butadiene" and "1,2, "3,4-tetrachlorohexafluorobutane” means "1,2,3,4-tetrachloro-1,1,2,3,4,4-hexafluorobutane”.
- antioxidant and polymerization inhibitor The type of antioxidant is a dechlorination reaction (hereinafter simply referred to as “dechlorination reaction ”) is not particularly limited as long as it is difficult to inhibit, has poor reactivity with zinc, and has solubility in organic solvents. agents, radical scavengers, and peroxide decomposers.
- Radical chain initiation inhibitors are classified into hydrazide antioxidants, amide antioxidants, and the like.
- Specific examples of radical chain initiation inhibitors include N-salicyloyl-N'-aldehyde hydrazine, N-salicyloyl-N'-acetylhydrazine, N,N'-diphenyloxamide, N,N'-di(2-hydroxy phenyl) oxamide.
- Radical scavengers are classified into phenol-based antioxidants, amine-based antioxidants, and the like.
- Specific examples of radical scavengers include 3,5-di-tert-butyl-4-hydroxytoluene (C 15 H 24 O), 2,2′-methylenebis(4-methyl-6-tert-butylphenol) (C 23 H 32 NO 2 ), 4-hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl free radical (C 9 H 18 NO 2 ), N,N'-di-2-naphthyl-1,4 - phenylenediamine ( C26H20N2 ) .
- the peroxide decomposers are classified into sulfur-based antioxidants, phosphorus-based antioxidants, and the like. Specific examples of peroxide decomposers include 10H-phenothiazine (C 12 H 9 NS), methyl-10H-phenothiazine (C 13 H 11 NS), chloro-10H-phenothiazine (C 12 H 8 ClNS), fluoro- 10H-phenothiazine (C 12 H 8 FNS), 2-mercaptobenzimidazole (C 7 H 6 N 2 S), terpene sulfide, triisodecyl phosphite (C 30 H 63 O 3 P), triphenyl phosphite (C 18 H 15 O 3 P).
- a compound having a cyclohexadiene ring structure can be used.
- compounds having a cyclohexadiene ring structure include ⁇ -terpinene (4-methyl-1-(1-methylethyl)-1,3-cyclohexadiene (C 10 H 16 )), ⁇ -terpinene (4- methyl-1-(1-methylethyl)-1,4-cyclohexadiene (C 10 H 16 )), ⁇ -terpinolene (1-methyl-4-isopropylidene-1-cyclohexene (C 10 H 16 )), mentioned.
- One of these antioxidants and polymerization inhibitors may be used alone, or two or more thereof may be used in combination.
- 10H-phenothiazine is most preferable because it is highly effective in improving the yield of hexafluoro-1,3-butadiene.
- the boiling point of 10H-phenothiazine is 371°C and that of hexafluoro-1,3-butadiene is 5.4°C. Therefore, if the reaction temperature of the dechlorination reaction is, for example, 50 to 100° C., the vapor generated by the vaporization of the reaction liquid mainly contains hexafluoro-1,3-butadiene and an organic solvent. Therefore, the amount of 10H-phenothiazine mixed in the steam is considered to be very small.
- the ratio of the total molar amount of antioxidants and polymerization inhibitors to the molar amount of 1,2,3,4-tetrachlorohexafluorobutane should be 0.01% or more and 10% or less. is preferred, more preferably 0.05% or more and 5% or less, and even more preferably 0.1% or more and 2% or less.
- the antioxidant and polymerization inhibitor are dissolved in at least one of an organic solvent and 1,2,3,4-tetrachlorohexafluorobutane, and the solution is supplied to a reaction vessel such as an autoclave for dechlorination reaction.
- a reaction vessel such as an autoclave for dechlorination reaction.
- the dechlorination reaction may be performed by supplying the reaction vessel as it is.
- the order of supplying the antioxidant, the polymerization inhibitor, zinc and the organic solvent to the reaction vessel is not particularly limited. They can be supplied in any order.
- an antioxidant and a polymerization inhibitor may be added to a reaction vessel charged with zinc and an organic solvent, or zinc and an organic solvent may be added to a reaction vessel charged with an antioxidant and a polymerization inhibitor. good too.
- the antioxidant, polymerization inhibitor, zinc, and organic solvent must be charged into the reactor at the same time.
- the form of zinc is not particularly limited as long as the dechlorination reaction proceeds, but from the viewpoint of reactivity and handling, powder form is preferred.
- the average particle diameter of powdered zinc is preferably 0.04 mm or more and 1.0 mm or less, more preferably 0.04 mm or more and 0.50 mm or less, and still more preferably 0.04 mm or more and 0.10 mm or less.
- the amount of zinc used is not particularly limited as long as the dechlorination reaction proceeds.
- 2,3,4-tetrachlorohexafluorobutane is preferably from 0.1 to 10, more preferably from 1.0 to 5.0, and from 2.0 to 3.0 is more preferable.
- Organic solvent is not particularly limited as long as it does not inhibit the dechlorination reaction.
- the organic solvent is preferably one that easily dissolves the antioxidant, has poor reactivity with zinc, is rich in dispersibility of zinc, and has a non-zero solubility of zinc chloride (ZnCl 2 ), which is a by-product. be.
- Organic solvents that can be suitably used include, for example, alcohols, cyclic ethers, acetone (C 2 H 6 CO), acetonitrile (CH 3 CN), aromatic hydrocarbons, amide solvents, organic acids, N-methyl-2- Pyrrolidone (C 5 H 9 NO) or a mixed solvent thereof can be mentioned.
- alcohols are preferable because the dechlorination reaction proceeds favorably.
- alcohols include methanol (CH 3 OH), ethanol (C 2 H 5 OH), 1-propanol (C 3 H 7 OH), 2-propanol (C 3 H 7 OH), 1-butanol (C 4 H 9 OH), 2-butanol (C 4 H 9 OH).
- 2-propanol is most preferable from the point of handleability.
- Cyclic ethers include, for example, tetrahydrofuran (C 4 H 8 O) and 1,4-dioxane (C 4 H 8 O 2 ).
- aromatic hydrocarbons include benzene (C 6 H 6 ) and toluene (C 7 H 8 ).
- Amide solvents include, for example, N,N-dimethylformamide (C 3 H 7 NO).
- Organic acids include, for example, acetic acid (CH 3 COOH). An organic solvent may be used individually by 1 type, and may use 2 or more types together.
- the amount of the organic solvent used is not particularly limited as long as the dechlorination reaction proceeds, but the ratio of the molar amount of the organic solvent to the molar amount of 1,2,3,4-tetrachlorohexafluorobutane (organic Solvent/1,2,3,4-tetrachlorohexafluorobutane) is preferably 0.1 to 10, more preferably 1.0 to 9.0, 3.0 to 8 It is more preferably 0.0 or less.
- reaction temperature of the dechlorination reaction is not particularly limited as long as the dechlorination reaction proceeds, but is preferably 20° C. or higher and 150° C. or lower, more preferably 40° C. or higher and 130° C. or lower. More preferably, the temperature is 70°C or higher and 100°C or lower.
- the reaction pressure of the dechlorination reaction is not particularly limited as long as the dechlorination reaction proceeds, but is preferably 0.01 MPa or more and 1 MPa or less in absolute pressure, and 0.05 MPa or more and 0.5 MPa in absolute pressure. It is more preferably 0.08 MPa or more and 0.2 MPa or less in terms of absolute pressure.
- Example 1 The reaction was carried out using the apparatus for producing hexafluoro-1,3-butadiene shown in FIG. 471 g (7.84 mol) of 2-propanol as an organic solvent and 0.39 g (0.39 g of 0.39 g) of 10H-phenothiazine (denoted as "PTZ" in Table 1) as an antioxidant were added to an autoclave 1 made of SUS316 having an inner volume of 1 L. 0020 mol), and 10H-phenothiazine was dissolved in 2-propanol.
- PTZ 10H-phenothiazine
- This autoclave 1 is equipped with a jacket (not shown) having a heating structure and a stirrer (not shown) in the upper part, and the heating method is a jacket heating method.
- first trap 4A a trap cooled to -78°C, cooled and liquefied, and 263.2 g of the first fraction was collected.
- This first fraction was analyzed by gas chromatography and found to be crude hexafluoro-1,3-butadiene with a hexafluoro-1,3-butadiene content of 95.3% by mass.
- nitrogen gas (N 2 ) was passed through the autoclave 1 at a flow rate of 100 mL/min, and remained in the autoclave 1.
- the product was vaporized.
- the vapor was sent to a trap (second trap 4B) cooled to ⁇ 78° C., cooled and liquefied, and 8.0 g of the second fraction was collected.
- This second fraction was analyzed by gas chromatography and found to be crude hexafluoro-1,3-butadiene with a hexafluoro-1,3-butadiene content of 84.1% by mass.
- yield (%) of C 4 F 6 ⁇ [mass of first fraction] ⁇ [content of hexafluoro-1,3-butadiene in first fraction]/[molecular weight of C 4 F 6 (162 .03)]+[mass of the second fraction] ⁇ [content of hexafluoro-1,3-butadiene in the second fraction]/[molecular weight of C 4 F 6 (162.03)] ⁇ /[ Number of moles of charged 1,2,3,4-tetrachlorohexafluorobutane] ⁇ 100
- the molar ratio (yield) of by-produced C 4 Cl 2 F 6 (excluding the precursor) to the charged 1,2,3,4-tetrachlorohexafluorobutane was 1.8%.
- the number of moles of by-produced flon impurities other than C 4 Cl 2 F 6 (described as “others” in Table 1) with respect to the number of moles of 1,2,3,4-tetrachlorohexafluorobutane charged The ratio (yield) was 6.7%, and the ratio (yield) of the number of moles of the by-produced polymer to the number of moles of 1,2,3,4-tetrachlorohexafluorobutane charged was 6.6%. there were.
- the ratio of the number of moles of C 4 F 6 remaining in the residue to the number of moles of 1,2,3,4-tetrachlorohexafluorobutane charged was 1.9% (C 4 F 6 in the residue yield was 1.9%).
- the conversion rate of the charged 1,2,3,4 -tetrachlorohexafluorobutane was 100% . Anything other than an impurity was assumed to be a polymer.
- the number of moles of the by-produced polymer is not the number of moles converted from the molecular weight of the polymer, but the number of moles of the charged 1,2,3,4-tetrachlorohexafluorobutane. from which the total number of moles of C 4 F 6 , C 4 Cl 2 F 6 (excluding precursors), and flon impurities was subtracted.
- Table 1 The above results are summarized in Table 1.
- the measurement conditions of gas chromatography for the first fraction and the second fraction are as follows.
- Measuring device Gas chromatograph GC-2014 manufactured by Shimadzu Corporation
- Column Gas chromatograph column CP-PoraPLOT Q-HT manufactured by Agilent Technologies, Inc. Column heating conditions: 90 ° C. (0 min) ⁇ (5 ° C./min) ⁇ 230 ° C.
- the measurement conditions for the gas chromatography of the residue are as follows. Measuring device: Gas chromatograph GC-2014 manufactured by Shimadzu Corporation Column: Column DB-1 for gas chromatograph manufactured by Agilent Technologies, Inc. Column heating conditions: 40 ° C. (15 min) ⁇ (10 ° C./min) ⁇ 230 ° C.
- Example 2 A dechlorination reaction was carried out in the same manner as in Example 1, except that the amount of 10H-phenothiazine charged was 3.9 g (0.020 mol). The ratio of the amount (molar amount) of 10H-phenothiazine used to the amount (molar amount) of 1,2,3,4-tetrachlorohexafluorobutane used was 1.0%. As a result, 283.0 g of the first fraction, 7.8 g of the second fraction and a residue were obtained.
- Example 3 Except that 4.4 g (0.020 mol) of 3,5-di-tert-butyl-4-hydroxytoluene (denoted as "BHT" in Table 1) was used instead of 10H-phenothiazine as an antioxidant. carried out a dechlorination reaction in the same manner as in Example 1. The ratio of the amount (molar amount) of 3,5-di-tert-butyl-4-hydroxytoluene used to the amount (molar amount) of 1,2,3,4-tetrachlorohexafluorobutane used was 1.0%. is. As a result, 223.9 g of the first fraction, 32.0 g of the second fraction and a residue were obtained.
- BHT 3,5-di-tert-butyl-4-hydroxytoluene
- Example 4 A dechlorination reaction was carried out in the same manner as in Example 1, except that 2.7 g (0.020 mol) of ⁇ -terpinene, which is a polymerization inhibitor, was used instead of the antioxidant. The ratio of the amount (molar amount) of ⁇ -terpinene used to the amount (molar amount) of 1,2,3,4-tetrachlorohexafluorobutane used was 1.0%. As a result, 208.3 g of the first fraction, 46.8 g of the second fraction and a residue were obtained.
- Example 5 3.4 g (0 The dechlorination reaction was carried out in the same manner as in Example 1, except that 0.020 mol) was used. Ratio of the usage amount (molar amount) of 4-hydroxy-2,2,6,6-tetramethylpiperidine 1-oxyl free radical to the usage amount (molar amount) of 1,2,3,4-tetrachlorohexafluorobutane is 1.0%. As a result, 215.0 g of the first fraction, 40.5 g of the second fraction and a residue were obtained.
- Example 1 A dechlorination reaction was carried out in the same manner as in Example 1, except that no antioxidant or polymerization inhibitor was used. As a result, 207.0 g of the first fraction, 42.7 g of the second fraction and a residue were obtained. Analysis of the first fraction, the second fraction, and the residue by gas chromatography revealed that the content of hexafluoro-1,3-butadiene in the first fraction was 94.6% by mass, and the second fraction The content of hexafluoro-1,3-butadiene was 87.2% by mass. The total yield of hexafluoro-1,3-butadiene from the first fraction and the second fraction was 71.7%. Table 1 summarizes the results of analysis performed in the same manner as in Example 1.
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Abstract
Description
本発明は、高収率でヘキサフルオロ-1,3-ブタジエンを製造することが可能な製造方法を提供することを課題とする。
[1] 1,2,3,4-テトラクロロヘキサフルオロブタンと、亜鉛と、酸化防止剤及び重合禁止剤の少なくとも一方と、有機溶剤と、を含有する反応液中で、前記1,2,3,4-テトラクロロヘキサフルオロブタンから塩素原子を脱離させてヘキサフルオロ-1,3-ブタジエンを生成させる脱塩素反応を行う反応工程を備えるヘキサフルオロ-1,3-ブタジエンの製造方法。
[3] 前記酸化防止剤が過酸化物分解剤である[1]に記載のヘキサフルオロ-1,3-ブタジエンの製造方法。
[5] 前記重合禁止剤が、シクロヘキサジエン環構造を有する化合物である[1]~[4]のいずれか一項に記載のヘキサフルオロ-1,3-ブタジエンの製造方法。
[8] 前記アルコールがメタノール、エタノール、1-プロパノール、2-プロパノール、1-ブタノール、及び2-ブタノールのうちの少なくとも1種である[7]に記載のヘキサフルオロ-1,3-ブタジエンの製造方法。
さらに、重合物としては、ヘキサフルオロ-1,3-ブタジエンの重合物、前駆体である3,4-ジクロロ体の重合物、ヘキサフルオロ-1,3-ブタジエンと前駆体である3,4-ジクロロ体の共重合物、フロン不純物の重合物等が挙げられる(図1を参照)。
〔酸化防止剤及び重合禁止剤〕
酸化防止剤の種類は、1,2,3,4-テトラクロロヘキサフルオロブタンから塩素原子を脱離させてヘキサフルオロ-1,3-ブタジエンを生成させる脱塩素反応(以下、単に「脱塩素反応」と記すこともある)を阻害しにくいもの、亜鉛との反応性が乏しいもの、有機溶剤への溶解性を有するものであれば、特に限定されるものではないが、例えば、ラジカル連鎖開始阻止剤、ラジカル捕捉剤、過酸化物分解剤が挙げられる。
これらの酸化防止剤、重合禁止剤は、1種を単独で使用してもよいし、2種以上を併用してもよい。
10H-フェノチアジンの沸点は371℃であり、ヘキサフルオロ-1,3-ブタジエンの沸点は5.4℃である。よって、脱塩素反応の反応温度を例えば50~100℃とすれば、反応液が気化して生成した蒸気の中には、主にヘキサフルオロ-1,3-ブタジエンと有機溶剤が含有されることとなり、蒸気に混入する10H-フェノチアジンの量は微量であると考えられる。
亜鉛の形態は、脱塩素反応が進行するものであれば特に限定されるものではないが、反応性や取り扱い性の観点から、粉末状が好ましい。粉末状の亜鉛の平均粒径は、0.04mm以上1.0mm以下が好ましく、0.04mm以上0.50mm以下がより好ましく、0.04mm以上0.10mm以下がさらに好ましい。
有機溶剤の種類は、脱塩素反応を阻害するものでなければ特に限定されるものではない。また、有機溶剤は、酸化防止剤を溶解しやすく、亜鉛との反応性が乏しく、亜鉛の分散性に富み、且つ、副生する塩化亜鉛(ZnCl2)の溶解度がゼロではないものが好適である。
脱塩素反応の反応温度は、脱塩素反応が進行するならば特に限定されるものではないが、20℃以上150℃以下であることが好ましく、40℃以上130℃以下であることがより好ましく、70℃以上100℃以下であることがさらに好ましい。
〔実施例1〕
図2に示すヘキサフルオロ-1,3-ブタジエンの製造装置を用いて、反応を行った。内容積1LのSUS316製オートクレーブ1に、有機溶剤として2-プロパノール471g(7.84mol)と、酸化防止剤として10H-フェノチアジン(表1においては「PTZ」と記してある)0.39g(0.0020mol)と、を投入し、10H-フェノチアジンを2-プロパノールに溶解させた。そして、そこに粉末状の金属亜鉛327g(5.00mol、平均粒径0.075mm。粒度分布は、レーザ回折法測定器であるマイクロトラックベル株式会社製マイクロトラックMT3300で測定した。平均粒径は面積平均値から算出した。測定回数nは3回である。)を投入した。1,2,3,4-テトラクロロヘキサフルオロブタンの使用量(モル量)に対する10H-フェノチアジンの使用量(モル量)の比率は、0.1%である。このオートクレーブ1は、加熱構造を有するジャケット(図示せず)と攪拌機(図示せず)を上部に備えており、加熱方式はジャケット加熱方式である。
C4F6の収率(%)={[第一留分の質量]×[第一留分中のヘキサフルオロ-1,3-ブタジエンの含有率]/[C4F6の分子量(162.03)]+[第二留分の質量]×[第二留分中のヘキサフルオロ-1,3-ブタジエンの含有率]/[C4F6の分子量(162.03)]}/[仕込んだ1,2,3,4-テトラクロロヘキサフルオロブタンのモル数]×100
測定装置:株式会社島津製作所製のガスクロマトグラフGC-2014
カラム:アジレント・テクノロジー株式会社製のガスクロマトグラフ用カラムCP-PoraPLOT Q-HT
カラムの昇温条件:90℃(0min)→(5℃/min)→230℃(5min)
カラムの平衡時間:1min
注入口の初期温度:120℃
制御モード:圧力
圧力:46.5kPa(一定)
全流量:54.0mL/min
カラム流量:1.0mL/min
線速度:23.1cm/sec
スプリット比:50
キャリアガス:He
検出器:水素炎イオン化型検出器(FID)
検出器の温度:230℃
水素圧:60kPa
空気圧:50kPa
試料の注入量:0.2mL(ガス)
測定装置:株式会社島津製作所製のガスクロマトグラフGC-2014
カラム:アジレント・テクノロジー株式会社製のガスクロマトグラフ用カラムDB-1
カラムの昇温条件:40℃(15min)→(10℃/min)→230℃(31min)
カラムの平衡時間:2min
注入口の初期温度:200℃
制御モード:圧力
圧力:100kPa(一定)
全流量:24.1mL/min
カラム流量:1.75mL/min
線速度:25cm/sec
パージ流量:3mL/min
スプリット比:11
キャリアガス:He
検出器:水素炎イオン化型検出器(FID)
検出器の温度:230℃
水素圧:60kPa
空気圧:50kPa
試料の注入量:0.2mL(液)
10H-フェノチアジンの仕込み量を3.9g(0.020mol)とした点を除いては、実施例1と同様に脱塩素反応を行った。1,2,3,4-テトラクロロヘキサフルオロブタンの使用量(モル量)に対する10H-フェノチアジンの使用量(モル量)の比率は、1.0%である。その結果、第一留分283.0gと第二留分7.8gと残渣とを得た。
酸化防止剤として10H-フェノチアジンに代えて3,5-ジ-tert-ブチル-4-ヒドロキシトルエン(表1においては「BHT」と記す)4.4g(0.020mol)を用いた点を除いては、実施例1と同様に脱塩素反応を行った。1,2,3,4-テトラクロロヘキサフルオロブタンの使用量(モル量)に対する3,5-ジ-tert-ブチル-4-ヒドロキシトルエンの使用量(モル量)の比率は、1.0%である。その結果、第一留分223.9gと第二留分32.0gと残渣とを得た。
酸化防止剤に代えて重合禁止剤であるα-テルピネン2.7g(0.020mol)を用いた点を除いては、実施例1と同様に脱塩素反応を行った。1,2,3,4-テトラクロロヘキサフルオロブタンの使用量(モル量)に対するα-テルピネンの使用量(モル量)の比率は、1.0%である。その結果、第一留分208.3gと第二留分46.8gと残渣とを得た。
酸化防止剤として10H-フェノチアジンに代えて4-ヒドロキシ-2,2,6,6-テトラメチルピペリジン1-オキシルフリーラジカル(表1においては「4H-TEMPO」と記してある)3.4g(0.020mol)を用いた点を除いては、実施例1と同様に脱塩素反応を行った。1,2,3,4-テトラクロロヘキサフルオロブタンの使用量(モル量)に対する4-ヒドロキシ-2,2,6,6-テトラメチルピペリジン1-オキシルフリーラジカルの使用量(モル量)の比率は、1.0%である。その結果、第一留分215.0gと第二留分40.5gと残渣とを得た。
酸化防止剤及び重合禁止剤を使用しない点を除いては、実施例1と同様に脱塩素反応を行った。その結果、第一留分207.0gと第二留分42.7gと残渣とを得た。
第一留分、第二留分、及び残渣をガスクロマトグラフィーによって分析したところ、第一留分のヘキサフルオロ-1,3-ブタジエンの含有率は94.6質量%であり、第二留分のヘキサフルオロ-1,3-ブタジエンの含有率は87.2質量%であった。また、第一留分と第二留分との合計のヘキサフルオロ-1,3-ブタジエンの収率は、71.7%であった。実施例1と同様にして分析した結果を、表1にまとめて示す。
2・・・供給装置
3・・・ジムロートコンデンサー
4A・・・第一トラップ
4B・・・第二トラップ
Claims (8)
- 1,2,3,4-テトラクロロヘキサフルオロブタンと、亜鉛と、酸化防止剤及び重合禁止剤の少なくとも一方と、有機溶剤と、を含有する反応液中で、前記1,2,3,4-テトラクロロヘキサフルオロブタンから塩素原子を脱離させてヘキサフルオロ-1,3-ブタジエンを生成させる脱塩素反応を行う反応工程を備えるヘキサフルオロ-1,3-ブタジエンの製造方法。
- 前記酸化防止剤が、ラジカル連鎖開始阻止剤、ラジカル捕捉剤、及び過酸化物分解剤のうちの少なくとも1種である請求項1に記載のヘキサフルオロ-1,3-ブタジエンの製造方法。
- 前記酸化防止剤が過酸化物分解剤である請求項1に記載のヘキサフルオロ-1,3-ブタジエンの製造方法。
- 前記過酸化物分解剤が10H-フェノチアジンである請求項2又は請求項3に記載のヘキサフルオロ-1,3-ブタジエンの製造方法。
- 前記重合禁止剤が、シクロヘキサジエン環構造を有する化合物である請求項1~4のいずれか一項に記載のヘキサフルオロ-1,3-ブタジエンの製造方法。
- 前記1,2,3,4-テトラクロロヘキサフルオロブタンのモル量に対する前記酸化防止剤及び前記重合禁止剤の合計のモル量の比率が、0.01%以上10%以下である請求項1~5のいずれか一項に記載のヘキサフルオロ-1,3-ブタジエンの製造方法。
- 前記有機溶剤がアルコールである請求項1~6のいずれか一項に記載のヘキサフルオロ-1,3-ブタジエンの製造方法。
- 前記アルコールがメタノール、エタノール、1-プロパノール、2-プロパノール、1-ブタノール、及び2-ブタノールのうちの少なくとも1種である請求項7に記載のヘキサフルオロ-1,3-ブタジエンの製造方法。
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CN202280066923.XA CN118055914A (zh) | 2021-10-04 | 2022-08-17 | 六氟-1,3-丁二烯的制造方法 |
JP2023552721A JPWO2023058331A1 (ja) | 2021-10-04 | 2022-08-17 | |
EP22878202.5A EP4414349A1 (en) | 2021-10-04 | 2022-08-17 | Method for producing hexafluoro-1,3-butadiene |
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JP2007063237A (ja) * | 2005-09-02 | 2007-03-15 | Hakuto Co Ltd | 汚れ防止方法 |
WO2007125972A1 (ja) * | 2006-04-28 | 2007-11-08 | Showa Denko K.K. | ヘキサフルオロ-1,3-ブタジエンの製造方法 |
JP2008308480A (ja) * | 2007-05-15 | 2008-12-25 | Daikin Ind Ltd | テトラフルオロエチレンの重合禁止剤 |
JP2019127436A (ja) * | 2018-01-19 | 2019-08-01 | 株式会社片山化学工業研究所 | ビニル系モノマーの重合抑制方法 |
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KR20210002626A (ko) * | 2018-04-30 | 2021-01-08 | 더 케무어스 컴퍼니 에프씨, 엘엘씨 | 안정화된 플루오로올레핀 조성물, 및 그의 제조, 저장 및 사용 방법 |
EP3812357B1 (en) * | 2018-06-22 | 2022-07-20 | Showa Denko K.K. | Method for producing hexafluoro-1,3-butadiene |
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JP2007063237A (ja) * | 2005-09-02 | 2007-03-15 | Hakuto Co Ltd | 汚れ防止方法 |
WO2007125972A1 (ja) * | 2006-04-28 | 2007-11-08 | Showa Denko K.K. | ヘキサフルオロ-1,3-ブタジエンの製造方法 |
JP2008308480A (ja) * | 2007-05-15 | 2008-12-25 | Daikin Ind Ltd | テトラフルオロエチレンの重合禁止剤 |
JP2019127436A (ja) * | 2018-01-19 | 2019-08-01 | 株式会社片山化学工業研究所 | ビニル系モノマーの重合抑制方法 |
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CN118055914A (zh) | 2024-05-17 |
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