DD233128A5 - Verfahren zur katalytischen herstellung von organohalogensilanen - Google Patents
Verfahren zur katalytischen herstellung von organohalogensilanen Download PDFInfo
- Publication number
- DD233128A5 DD233128A5 DD27318285A DD27318285A DD233128A5 DD 233128 A5 DD233128 A5 DD 233128A5 DD 27318285 A DD27318285 A DD 27318285A DD 27318285 A DD27318285 A DD 27318285A DD 233128 A5 DD233128 A5 DD 233128A5
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- copper
- catalyst
- item
- tin
- aluminum
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000004519 manufacturing process Methods 0.000 title description 9
- 230000003197 catalytic effect Effects 0.000 title description 2
- 239000010949 copper Substances 0.000 claims abstract description 119
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 112
- 229910052802 copper Inorganic materials 0.000 claims abstract description 108
- 239000003054 catalyst Substances 0.000 claims abstract description 76
- 239000000203 mixture Substances 0.000 claims abstract description 48
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000010703 silicon Substances 0.000 claims abstract description 39
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 39
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 35
- 150000001875 compounds Chemical class 0.000 claims abstract description 26
- 150000002896 organic halogen compounds Chemical class 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 46
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 38
- 229910052718 tin Inorganic materials 0.000 claims description 36
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 26
- 238000006243 chemical reaction Methods 0.000 claims description 25
- 239000011701 zinc Substances 0.000 claims description 25
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 claims description 24
- 229910052725 zinc Inorganic materials 0.000 claims description 24
- 229910052742 iron Inorganic materials 0.000 claims description 21
- YGZSVWMBUCGDCV-UHFFFAOYSA-N chloro(methyl)silane Chemical class C[SiH2]Cl YGZSVWMBUCGDCV-UHFFFAOYSA-N 0.000 claims description 14
- 229940050176 methyl chloride Drugs 0.000 claims description 12
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(i) oxide Chemical compound [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 229960004643 cupric oxide Drugs 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 239000000047 product Substances 0.000 claims description 7
- 239000002244 precipitate Substances 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 4
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 239000005749 Copper compound Substances 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 150000001880 copper compounds Chemical class 0.000 claims description 2
- 238000009853 pyrometallurgy Methods 0.000 claims description 2
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 claims 1
- 229940112669 cuprous oxide Drugs 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 claims 1
- 239000005055 methyl trichlorosilane Substances 0.000 claims 1
- JLUFWMXJHAVVNN-UHFFFAOYSA-N methyltrichlorosilane Chemical compound C[Si](Cl)(Cl)Cl JLUFWMXJHAVVNN-UHFFFAOYSA-N 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 41
- 230000000694 effects Effects 0.000 description 13
- 239000002245 particle Substances 0.000 description 12
- 239000012535 impurity Substances 0.000 description 9
- WCCJDBZJUYKDBF-UHFFFAOYSA-N copper silicon Chemical compound [Si].[Cu] WCCJDBZJUYKDBF-UHFFFAOYSA-N 0.000 description 8
- 239000004615 ingredient Substances 0.000 description 7
- 239000012043 crude product Substances 0.000 description 6
- 230000009257 reactivity Effects 0.000 description 6
- SLLGVCUQYRMELA-UHFFFAOYSA-N chlorosilicon Chemical compound Cl[Si] SLLGVCUQYRMELA-UHFFFAOYSA-N 0.000 description 5
- 150000004820 halides Chemical class 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 239000005751 Copper oxide Substances 0.000 description 4
- 229910000431 copper oxide Inorganic materials 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 239000005046 Chlorosilane Substances 0.000 description 3
- 238000007792 addition Methods 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 150000001367 organochlorosilanes Chemical class 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- 239000011856 silicon-based particle Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000001350 alkyl halides Chemical class 0.000 description 2
- NEHMKBQYUWJMIP-NJFSPNSNSA-N chloro(114C)methane Chemical compound [14CH3]Cl NEHMKBQYUWJMIP-NJFSPNSNSA-N 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000000320 mechanical mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000002574 poison Substances 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- QABCGOSYZHCPGN-UHFFFAOYSA-N chloro(dimethyl)silicon Chemical compound C[Si](C)Cl QABCGOSYZHCPGN-UHFFFAOYSA-N 0.000 description 1
- VNJCDDZVNHPVNM-UHFFFAOYSA-N chloro(ethyl)silane Chemical class CC[SiH2]Cl VNJCDDZVNHPVNM-UHFFFAOYSA-N 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- LBJNMUFDOHXDFG-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu].[Cu] LBJNMUFDOHXDFG-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000548 poly(silane) polymer Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- VXKWYPOMXBVZSJ-UHFFFAOYSA-N tetramethyltin Chemical compound C[Sn](C)(C)C VXKWYPOMXBVZSJ-UHFFFAOYSA-N 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- -1 tin halide Chemical class 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/835—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with germanium, tin or lead
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/12—Organo silicon halides
- C07F7/16—Preparation thereof from silicon and halogenated hydrocarbons direct synthesis
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US57962184A | 1984-02-13 | 1984-02-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD233128A5 true DD233128A5 (de) | 1986-02-19 |
Family
ID=24317662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD27318285A DD233128A5 (de) | 1984-02-13 | 1985-02-11 | Verfahren zur katalytischen herstellung von organohalogensilanen |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS60241934A (pt) |
| AU (1) | AU576216B2 (pt) |
| BR (1) | BR8500253A (pt) |
| DD (1) | DD233128A5 (pt) |
| DE (1) | DE3501085C2 (pt) |
| FR (1) | FR2559487B1 (pt) |
| GB (1) | GB2153697B (pt) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4602101A (en) * | 1985-11-12 | 1986-07-22 | Dow Corning Corporation | Method of manufacturing alkylhalosilanes |
| US4762940A (en) * | 1987-12-11 | 1988-08-09 | Dow Corning Corporation | Method for preparation of alkylhalosilanes |
| DE3823308A1 (de) * | 1988-07-09 | 1990-01-11 | Bayer Ag | Verfahren zur herstellung von organosilanen |
| DE3841417A1 (de) * | 1988-12-08 | 1990-06-13 | Bayer Ag | Verfahren zur herstellung von organosilanen |
| DE4312494A1 (de) * | 1993-04-16 | 1994-10-20 | Nuenchritz Chemie Gmbh | Verfahren zur Herstellung von Methylchlorsilanen |
| NO950760L (no) * | 1995-02-28 | 1996-08-29 | Elkem Materials | Fremgangsmåte for fremstilling av alkylhalosilaner |
| DE19532315C1 (de) * | 1995-09-01 | 1997-02-06 | Bayer Ag | Verfahren zur Herstellung von Alkylhalogensilanen |
| EP1027927A3 (de) * | 1995-12-01 | 2000-09-27 | GE Bayer Silicones GmbH & Co. KG | Katalysatoren auf Kupferbasis, Verfahren zu ihrer Herstellung sowie ihre Verwendung und ein Verfahren zur Herstellung von Alkylhalogensilanen |
| DE19645359A1 (de) * | 1996-11-04 | 1998-05-07 | Bayer Ag | Verfahren zur Herstellung von Alkylhalogensilanen |
| KR101779807B1 (ko) * | 2008-06-04 | 2017-09-19 | 다우 코닝 코포레이션 | 유기할로실란과 할로실란을 제조하는 개선 방법 |
| US20170267702A1 (en) * | 2014-08-01 | 2017-09-21 | Scm Metal Products, Inc. | Method for Making Alkylhalosilanes |
| DE102014225460A1 (de) * | 2014-12-10 | 2016-06-16 | Wacker Chemie Ag | Verfahren zur Direktsynthese von Methylchlorsilanen in Wirbelschichtreaktoren |
| US10040689B2 (en) | 2014-12-19 | 2018-08-07 | Dow Silicones Corporation | Process for preparing monohydrogentrihalosilanes |
| CN113332980B (zh) * | 2021-06-01 | 2023-07-25 | 中国科学院过程工程研究所 | 一种三元铜催化剂、其制备方法及用途 |
| CN115921880A (zh) * | 2022-11-16 | 2023-04-07 | 山东中亘新材料有限公司 | 一种有机硅单体合成用CuZnAl三元合金催化剂粉末的制备方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE964860C (de) * | 1951-11-22 | 1957-05-29 | Paul Linke Dr Ing | Verfahren zur Herstellung von Alkylhalogensilanen |
| GB1201466A (en) * | 1966-11-28 | 1970-08-05 | Midland Silicones Ltd | Preparation of organosilicon halides |
| GB1235461A (en) * | 1967-08-11 | 1971-06-16 | Midland Silicones Ltd | Method for the preparation of organohalosilanes |
| DE2750556A1 (de) * | 1977-11-11 | 1979-05-17 | Bayer Ag | Verfahren zur herstellung von katalyt-kupfer |
| US4314908A (en) * | 1979-10-24 | 1982-02-09 | Union Carbide Corporation | Preparation of reaction mass for the production of methylchlorosilane |
| US4307242A (en) * | 1980-10-03 | 1981-12-22 | General Electric Company | Process for removing impurities from residual silicon powder |
| DE3235943A1 (de) * | 1982-09-29 | 1984-03-29 | General Electric Co., Schenectady, N.Y. | Verfahren zum herstellen von diorganodihalogensilanen |
| DE3425424C3 (de) * | 1983-07-28 | 1995-05-18 | Gen Electric | Verfahren zur Herstellung von Alkylhalogensilanen |
| US4500724A (en) * | 1983-07-28 | 1985-02-19 | General Electric Company | Method for making alkylhalosilanes |
-
1984
- 1984-11-21 GB GB08429441A patent/GB2153697B/en not_active Expired
-
1985
- 1985-01-15 DE DE19853501085 patent/DE3501085C2/de not_active Expired - Lifetime
- 1985-01-16 BR BR8500253A patent/BR8500253A/pt unknown
- 1985-02-06 AU AU38473/85A patent/AU576216B2/en not_active Ceased
- 1985-02-06 FR FR8501663A patent/FR2559487B1/fr not_active Expired
- 1985-02-11 DD DD27318285A patent/DD233128A5/de not_active IP Right Cessation
- 1985-02-12 JP JP60023688A patent/JPS60241934A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| AU576216B2 (en) | 1988-08-18 |
| JPS60241934A (ja) | 1985-11-30 |
| GB8429441D0 (en) | 1985-01-03 |
| FR2559487A1 (fr) | 1985-08-16 |
| DE3501085C2 (de) | 1996-09-05 |
| AU3847385A (en) | 1985-08-22 |
| GB2153697B (en) | 1988-04-27 |
| BR8500253A (pt) | 1985-11-19 |
| DE3501085A1 (de) | 1985-08-14 |
| JPH0480740B2 (pt) | 1992-12-21 |
| FR2559487B1 (fr) | 1988-12-02 |
| GB2153697A (en) | 1985-08-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ENJ | Ceased due to non-payment of renewal fee |