CN1447782A - 卤代化合物的脱卤化氢方法 - Google Patents
卤代化合物的脱卤化氢方法 Download PDFInfo
- Publication number
- CN1447782A CN1447782A CN01814237A CN01814237A CN1447782A CN 1447782 A CN1447782 A CN 1447782A CN 01814237 A CN01814237 A CN 01814237A CN 01814237 A CN01814237 A CN 01814237A CN 1447782 A CN1447782 A CN 1447782A
- Authority
- CN
- China
- Prior art keywords
- reactor
- dehydrohalogenation
- halogenated compound
- compound
- composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 150000001875 compounds Chemical class 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims description 50
- 238000006704 dehydrohalogenation reaction Methods 0.000 title claims description 30
- 230000008569 process Effects 0.000 title claims description 25
- 238000009835 boiling Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 36
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 27
- 239000007791 liquid phase Substances 0.000 claims description 20
- 238000001704 evaporation Methods 0.000 claims description 19
- 230000008020 evaporation Effects 0.000 claims description 19
- 239000003513 alkali Substances 0.000 claims description 18
- -1 chloro alkene Chemical class 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- 150000001350 alkyl halides Chemical class 0.000 claims description 10
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 229910000039 hydrogen halide Inorganic materials 0.000 claims description 6
- 239000012433 hydrogen halide Substances 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 4
- 150000001348 alkyl chlorides Chemical class 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims 1
- 239000000376 reactant Substances 0.000 abstract description 16
- 239000007795 chemical reaction product Substances 0.000 abstract description 5
- 238000013019 agitation Methods 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 238000009834 vaporization Methods 0.000 abstract 1
- 230000008016 vaporization Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 26
- 238000002156 mixing Methods 0.000 description 15
- 239000007789 gas Substances 0.000 description 13
- 239000000047 product Substances 0.000 description 11
- 230000005587 bubbling Effects 0.000 description 10
- WGQKYBSKWIADBV-UHFFFAOYSA-N benzylamine Chemical compound NCC1=CC=CC=C1 WGQKYBSKWIADBV-UHFFFAOYSA-N 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 241000282326 Felis catus Species 0.000 description 7
- PCPYTNCQOSFKGG-UHFFFAOYSA-N 1-chlorobuta-1,3-diene Chemical compound ClC=CC=C PCPYTNCQOSFKGG-UHFFFAOYSA-N 0.000 description 6
- 230000009471 action Effects 0.000 description 6
- 150000001336 alkenes Chemical class 0.000 description 6
- 230000002140 halogenating effect Effects 0.000 description 6
- 239000012071 phase Substances 0.000 description 6
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 5
- 150000002896 organic halogen compounds Chemical class 0.000 description 5
- 150000003841 chloride salts Chemical class 0.000 description 4
- 239000003444 phase transfer catalyst Substances 0.000 description 4
- 239000011541 reaction mixture Substances 0.000 description 4
- GVEUEBXMTMZVSD-UHFFFAOYSA-N 3,3,4,4,5,5,6,6,6-nonafluorohex-1-ene Chemical group FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C=C GVEUEBXMTMZVSD-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 238000007033 dehydrochlorination reaction Methods 0.000 description 3
- 125000005843 halogen group Chemical group 0.000 description 3
- 239000012074 organic phase Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- JZNOXYXRJDVNOM-UHFFFAOYSA-N 1,1,1,2,2,3,3,4,4,5,6,6,6-tridecafluoro-5-iodohexane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(I)C(F)(F)F JZNOXYXRJDVNOM-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000002715 modification method Methods 0.000 description 2
- 239000010815 organic waste Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- XFNJYAKDBJUJAJ-UHFFFAOYSA-N 1,2-dibromopropane Chemical compound CC(Br)CBr XFNJYAKDBJUJAJ-UHFFFAOYSA-N 0.000 description 1
- CKZRVAPVPPFLQX-UHFFFAOYSA-N 1-bromo-1,1,2,2-tetrafluorobutane Chemical compound CCC(F)(F)C(F)(F)Br CKZRVAPVPPFLQX-UHFFFAOYSA-N 0.000 description 1
- NIDSRGCVYOEDFW-UHFFFAOYSA-N 1-bromo-4-chlorobutane Chemical compound ClCCCCBr NIDSRGCVYOEDFW-UHFFFAOYSA-N 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 125000004067 aliphatic alkene group Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000005466 alkylenyl group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 125000001246 bromo group Chemical group Br* 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 238000007269 dehydrobromination reaction Methods 0.000 description 1
- 238000005914 dehydroiodination reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 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
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical group 0.000 description 1
- 150000004023 quaternary phosphonium compounds Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000004417 unsaturated alkyl group Chemical group 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/25—Preparation of halogenated hydrocarbons by splitting-off hydrogen halides from halogenated hydrocarbons
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
Claims (17)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US22592000P | 2000-08-17 | 2000-08-17 | |
US60/225,920 | 2000-08-17 | ||
US09/801,142 | 2001-03-07 | ||
US09/801,142 US6380446B1 (en) | 2000-08-17 | 2001-03-07 | Process for dehydrohalogenation of halogenated compounds |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1447782A true CN1447782A (zh) | 2003-10-08 |
CN1262526C CN1262526C (zh) | 2006-07-05 |
Family
ID=26920042
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN01141116A Pending CN1344702A (zh) | 2000-08-17 | 2001-08-17 | 卤代化合物脱卤化氢的方法 |
CNB018142370A Expired - Lifetime CN1262526C (zh) | 2000-08-17 | 2001-08-17 | 卤代化合物的脱卤化氢方法 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN01141116A Pending CN1344702A (zh) | 2000-08-17 | 2001-08-17 | 卤代化合物脱卤化氢的方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6380446B1 (zh) |
EP (1) | EP1309530B1 (zh) |
JP (2) | JP4896352B2 (zh) |
CN (2) | CN1344702A (zh) |
DE (1) | DE60121772T2 (zh) |
WO (1) | WO2002014247A2 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100388976C (zh) * | 2006-07-07 | 2008-05-21 | 宁夏大学 | 一种氯代烷烃脱氯化氢反应生成氯代烯烃的催化剂及其制备方法 |
CN115536490A (zh) * | 2022-10-13 | 2022-12-30 | 中国矿业大学(北京) | 一种合成四氟一溴丁烯的方法 |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6548719B1 (en) * | 2001-09-25 | 2003-04-15 | Honeywell International | Process for producing fluoroolefins |
GB0625214D0 (en) * | 2006-12-19 | 2007-01-24 | Ineos Fluor Holdings Ltd | Process |
US8030531B2 (en) * | 2007-12-19 | 2011-10-04 | Dupont Performance Elastomers Llc | Process for production of 2,3-dichlorobutadiene-1,3 |
US8026400B2 (en) * | 2007-12-19 | 2011-09-27 | Dupont Performance Elastomers Llc | Process for production of 2,3-dichlorobutadiene-1,3 |
JP5152521B2 (ja) * | 2009-02-19 | 2013-02-27 | 日本ゼオン株式会社 | ハロゲン化化合物を脱ハロゲン化水素する方法 |
US7872163B1 (en) | 2009-12-16 | 2011-01-18 | Dupont Performance Elastomers L.L.C. | Process for production of 3,4-dichlorobutene-1 |
US20110269999A1 (en) | 2010-04-29 | 2011-11-03 | Honeywell International Inc. | Process for dehydrohalogenation of halogenated alkanes |
US10329676B2 (en) | 2012-07-26 | 2019-06-25 | Avantium Knowledge Centre B.V. | Method and system for electrochemical reduction of carbon dioxide employing a gas diffusion electrode |
US9267212B2 (en) | 2012-07-26 | 2016-02-23 | Liquid Light, Inc. | Method and system for production of oxalic acid and oxalic acid reduction products |
US9175407B2 (en) | 2012-07-26 | 2015-11-03 | Liquid Light, Inc. | Integrated process for producing carboxylic acids from carbon dioxide |
US8641885B2 (en) | 2012-07-26 | 2014-02-04 | Liquid Light, Inc. | Multiphase electrochemical reduction of CO2 |
US8692019B2 (en) | 2012-07-26 | 2014-04-08 | Liquid Light, Inc. | Electrochemical co-production of chemicals utilizing a halide salt |
US20130105304A1 (en) | 2012-07-26 | 2013-05-02 | Liquid Light, Inc. | System and High Surface Area Electrodes for the Electrochemical Reduction of Carbon Dioxide |
WO2014043651A2 (en) | 2012-09-14 | 2014-03-20 | Liquid Light, Inc. | High pressure electrochemical cell and process for the electrochemical reduction of carbon dioxide |
CN107032946B (zh) * | 2013-12-10 | 2020-10-09 | 浙江蓝天环保高科技股份有限公司 | 一种相转移催化制备三氟溴乙烯的方法 |
MX2018001966A (es) | 2015-09-11 | 2018-06-19 | Chemours Co Fc Llc | Deshidrohalogenacion de hidroclorofluorocarburos. |
HRP20231540T1 (hr) | 2017-03-10 | 2024-03-01 | The Chemours Company Fc, Llc | Postupak za pripremu 3,3,3-trifluoroprop-1-ena |
CN115093307A (zh) * | 2022-07-18 | 2022-09-23 | 福建三农新材料有限责任公司 | 全氟烷基乙烯及其连续制备方法和连续生产设备 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2430016A (en) * | 1946-09-05 | 1947-11-04 | Shell Dev | Production of haloprenes |
US3981937A (en) | 1966-06-03 | 1976-09-21 | E. I. Du Pont De Nemours And Company | Dehydrohalogenation of 3,4-dichloro-1-butene |
US3876716A (en) | 1968-02-28 | 1975-04-08 | Du Pont | Dehydrochlorination of chlorinated compounds |
US3639493A (en) | 1968-02-28 | 1972-02-01 | Du Pont | Dehydrohalogenation of halogenated compounds |
JPS5136093B1 (zh) | 1971-02-13 | 1976-10-06 | ||
DE2533429C3 (de) * | 1975-07-25 | 1979-07-19 | Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung von 2-Chlorbutadien-U3) |
DE2536504C3 (de) * | 1975-08-16 | 1985-06-27 | Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung von Halogendienen |
US4418232A (en) | 1982-11-29 | 1983-11-29 | E. I. Du Pont De Nemours & Co. | Dehydrohalogenation process |
US5107040A (en) * | 1991-05-15 | 1992-04-21 | The Dow Chemical Company | Dehydrohalogenation using magnesium hydroxide |
DE19509298A1 (de) * | 1995-03-15 | 1996-09-19 | Bayer Ag | Verfahren zur katalytischen Dehydrohalogenierung von halogenierten Kohlenwasserstoffen |
-
2001
- 2001-03-07 US US09/801,142 patent/US6380446B1/en not_active Expired - Fee Related
- 2001-08-17 DE DE60121772T patent/DE60121772T2/de not_active Expired - Lifetime
- 2001-08-17 JP JP2002519396A patent/JP4896352B2/ja not_active Expired - Fee Related
- 2001-08-17 CN CN01141116A patent/CN1344702A/zh active Pending
- 2001-08-17 CN CNB018142370A patent/CN1262526C/zh not_active Expired - Lifetime
- 2001-08-17 EP EP01962242A patent/EP1309530B1/en not_active Expired - Lifetime
- 2001-08-17 WO PCT/US2001/025816 patent/WO2002014247A2/en active IP Right Grant
- 2001-08-17 JP JP2001247583A patent/JP2002087997A/ja not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100388976C (zh) * | 2006-07-07 | 2008-05-21 | 宁夏大学 | 一种氯代烷烃脱氯化氢反应生成氯代烯烃的催化剂及其制备方法 |
CN115536490A (zh) * | 2022-10-13 | 2022-12-30 | 中国矿业大学(北京) | 一种合成四氟一溴丁烯的方法 |
CN115536490B (zh) * | 2022-10-13 | 2024-05-17 | 中国矿业大学(北京) | 一种合成四氟一溴丁烯的方法 |
Also Published As
Publication number | Publication date |
---|---|
WO2002014247A2 (en) | 2002-02-21 |
EP1309530B1 (en) | 2006-07-26 |
US20020022753A1 (en) | 2002-02-21 |
EP1309530A2 (en) | 2003-05-14 |
JP2004506031A (ja) | 2004-02-26 |
WO2002014247A3 (en) | 2002-08-29 |
CN1344702A (zh) | 2002-04-17 |
US6380446B1 (en) | 2002-04-30 |
CN1262526C (zh) | 2006-07-05 |
DE60121772D1 (de) | 2006-09-07 |
JP2002087997A (ja) | 2002-03-27 |
DE60121772T2 (de) | 2007-08-02 |
JP4896352B2 (ja) | 2012-03-14 |
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Owner name: E.I. DU PONT DE NEMOURS AND CO. Free format text: FORMER OWNER: DUPONT PERFORMANCE ELASTOMERS Effective date: 20120405 |
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CP01 | Change in the name or title of a patent holder |
Address after: Delaware, USA Patentee after: DUPONT PERFORMANCE ELASTOMERS LLC Address before: Delaware, USA Patentee before: DUPONT DOW ELASTOMERS LLC |
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Effective date of registration: 20120405 Address after: Wilmington, Delaware, USA Patentee after: E. I. du Pont de Nemours and Co. Address before: Delaware, USA Patentee before: DUPONT PERFORMANCE ELASTOMERS LLC |
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Effective date of registration: 20170510 Address after: louisiana Patentee after: Electrochemical high performance Rubber Co.,Ltd. Address before: Wilmington, Delaware, USA Patentee before: E. I. du Pont de Nemours and Co. |
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Granted publication date: 20060705 |
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CX01 | Expiry of patent term |