KR870000955B1 - 연속적 불소화 방법 - Google Patents
연속적 불소화 방법 Download PDFInfo
- Publication number
- KR870000955B1 KR870000955B1 KR1019840003522A KR840003522A KR870000955B1 KR 870000955 B1 KR870000955 B1 KR 870000955B1 KR 1019840003522 A KR1019840003522 A KR 1019840003522A KR 840003522 A KR840003522 A KR 840003522A KR 870000955 B1 KR870000955 B1 KR 870000955B1
- Authority
- KR
- South Korea
- Prior art keywords
- fluorinated
- antimony
- chloride
- reaction
- haloalkane
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 31
- 238000003682 fluorination reaction Methods 0.000 title description 35
- 238000006243 chemical reaction Methods 0.000 claims description 62
- 150000001350 alkyl halides Chemical class 0.000 claims description 58
- FAPDDOBMIUGHIN-UHFFFAOYSA-K antimony trichloride Chemical class Cl[Sb](Cl)Cl FAPDDOBMIUGHIN-UHFFFAOYSA-K 0.000 claims description 47
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical group ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 40
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 38
- VMPVEPPRYRXYNP-UHFFFAOYSA-I antimony(5+);pentachloride Chemical compound Cl[Sb](Cl)(Cl)(Cl)Cl VMPVEPPRYRXYNP-UHFFFAOYSA-I 0.000 claims description 38
- 229910000040 hydrogen fluoride Inorganic materials 0.000 claims description 38
- 229910052731 fluorine Inorganic materials 0.000 claims description 36
- 239000011737 fluorine Substances 0.000 claims description 35
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 27
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 24
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 24
- 239000007789 gas Substances 0.000 claims description 14
- 239000002699 waste material Substances 0.000 claims description 12
- 239000007795 chemical reaction product Substances 0.000 claims description 7
- 239000006227 byproduct Substances 0.000 claims description 4
- 125000001153 fluoro group Chemical group F* 0.000 claims description 4
- 150000002367 halogens Chemical group 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 2
- 238000004508 fractional distillation Methods 0.000 claims 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 30
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 22
- 239000000047 product Substances 0.000 description 18
- 239000000203 mixture Substances 0.000 description 13
- 229910052801 chlorine Inorganic materials 0.000 description 11
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 description 10
- 239000000460 chlorine Substances 0.000 description 10
- 238000000926 separation method Methods 0.000 description 10
- 238000004458 analytical method Methods 0.000 description 9
- 238000007872 degassing Methods 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 8
- 239000004809 Teflon Substances 0.000 description 8
- 229920006362 Teflon® Polymers 0.000 description 8
- 238000009835 boiling Methods 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 7
- 229910000039 hydrogen halide Inorganic materials 0.000 description 7
- 239000012433 hydrogen halide Substances 0.000 description 7
- -1 hydrogen halides Chemical class 0.000 description 7
- 239000000376 reactant Substances 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 6
- 125000005843 halogen group Chemical group 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 description 5
- 150000001335 aliphatic alkanes Chemical class 0.000 description 5
- 229910052787 antimony Inorganic materials 0.000 description 5
- 238000004587 chromatography analysis Methods 0.000 description 5
- UMNKXPULIDJLSU-UHFFFAOYSA-N dichlorofluoromethane Chemical compound FC(Cl)Cl UMNKXPULIDJLSU-UHFFFAOYSA-N 0.000 description 5
- 229940099364 dichlorofluoromethane Drugs 0.000 description 5
- 238000004821 distillation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- GUNJVIDCYZYFGV-UHFFFAOYSA-K antimony trifluoride Chemical compound F[Sb](F)F GUNJVIDCYZYFGV-UHFFFAOYSA-K 0.000 description 4
- LXKKIYWRPQNAPH-UHFFFAOYSA-L chloro(fluoro)antimony Chemical compound F[Sb]Cl LXKKIYWRPQNAPH-UHFFFAOYSA-L 0.000 description 4
- VHHHONWQHHHLTI-UHFFFAOYSA-N hexachloroethane Chemical compound ClC(Cl)(Cl)C(Cl)(Cl)Cl VHHHONWQHHHLTI-UHFFFAOYSA-N 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000003039 volatile agent Substances 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 3
- 125000004773 chlorofluoromethyl group Chemical group [H]C(F)(Cl)* 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 3
- 229940029284 trichlorofluoromethane Drugs 0.000 description 3
- BOSAWIQFTJIYIS-UHFFFAOYSA-N 1,1,1-trichloro-2,2,2-trifluoroethane Chemical compound FC(F)(F)C(Cl)(Cl)Cl BOSAWIQFTJIYIS-UHFFFAOYSA-N 0.000 description 2
- 239000004338 Dichlorodifluoromethane Substances 0.000 description 2
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 2
- 150000001348 alkyl chlorides Chemical class 0.000 description 2
- FAWGZAFXDJGWBB-UHFFFAOYSA-N antimony(3+) Chemical compound [Sb+3] FAWGZAFXDJGWBB-UHFFFAOYSA-N 0.000 description 2
- ZDINGUUTWDGGFF-UHFFFAOYSA-N antimony(5+) Chemical compound [Sb+5] ZDINGUUTWDGGFF-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- OEERIBPGRSLGEK-UHFFFAOYSA-N carbon dioxide;methanol Chemical compound OC.O=C=O OEERIBPGRSLGEK-UHFFFAOYSA-N 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- AFYPFACVUDMOHA-UHFFFAOYSA-N chlorotrifluoromethane Chemical compound FC(F)(F)Cl AFYPFACVUDMOHA-UHFFFAOYSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 2
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BNIXVQGCZULYKV-UHFFFAOYSA-N pentachloroethane Chemical compound ClC(Cl)C(Cl)(Cl)Cl BNIXVQGCZULYKV-UHFFFAOYSA-N 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229950011008 tetrachloroethylene Drugs 0.000 description 2
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 2
- SLGOCMATMKJJCE-UHFFFAOYSA-N 1,1,1,2-tetrachloro-2,2-difluoroethane Chemical compound FC(F)(Cl)C(Cl)(Cl)Cl SLGOCMATMKJJCE-UHFFFAOYSA-N 0.000 description 1
- BAMUEXIPKSRTBS-UHFFFAOYSA-N 1,1-dichloro-1,2,2,2-tetrafluoroethane Chemical compound FC(F)(F)C(F)(Cl)Cl BAMUEXIPKSRTBS-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 241000272168 Laridae Species 0.000 description 1
- OFSKXZRDPWVERQ-UHFFFAOYSA-N [Cl].[Sb] Chemical class [Cl].[Sb] OFSKXZRDPWVERQ-UHFFFAOYSA-N 0.000 description 1
- UVLCEBOSRGZWFG-UHFFFAOYSA-K [Sb](F)(F)F.[Cl] Chemical compound [Sb](F)(F)F.[Cl] UVLCEBOSRGZWFG-UHFFFAOYSA-K 0.000 description 1
- DBUQEYQQFXCLAW-UHFFFAOYSA-N [Sb].ClF Chemical compound [Sb].ClF DBUQEYQQFXCLAW-UHFFFAOYSA-N 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001495 arsenic compounds Chemical class 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000001246 bromo group Chemical group Br* 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- OWQNOTOYTSUHNE-UHFFFAOYSA-N carbon dioxide methane Chemical compound C.C(=O)=O.C OWQNOTOYTSUHNE-UHFFFAOYSA-N 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012025 fluorinating agent Substances 0.000 description 1
- 229940093920 gynecological arsenic compound Drugs 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- GPGMRSSBVJNWRA-UHFFFAOYSA-N hydrochloride hydrofluoride Chemical compound F.Cl GPGMRSSBVJNWRA-UHFFFAOYSA-N 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 125000002346 iodo group Chemical group I* 0.000 description 1
- OHZZTXYKLXZFSZ-UHFFFAOYSA-I manganese(3+) 5,10,15-tris(1-methylpyridin-1-ium-4-yl)-20-(1-methylpyridin-4-ylidene)porphyrin-22-ide pentachloride Chemical class [Cl-].[Cl-].[Cl-].[Cl-].[Cl-].[Mn+3].C1=CN(C)C=CC1=C1C(C=C2)=NC2=C(C=2C=C[N+](C)=CC=2)C([N-]2)=CC=C2C(C=2C=C[N+](C)=CC=2)=C(C=C2)N=C2C(C=2C=C[N+](C)=CC=2)=C2N=C1C=C2 OHZZTXYKLXZFSZ-UHFFFAOYSA-I 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- KQKBWZDTYSQPMD-UHFFFAOYSA-N pentachlorofluoroethane Chemical compound FC(Cl)(Cl)C(Cl)(Cl)Cl KQKBWZDTYSQPMD-UHFFFAOYSA-N 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/20—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms
- C07C17/202—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction
- C07C17/208—Preparation of halogenated hydrocarbons by replacement by halogens of halogen atoms by other halogen atoms two or more compounds being involved in the reaction the other compound being MX
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C19/00—Acyclic saturated compounds containing halogen atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
Claims (6)
- 5염화 안티몬과 불화수소의 연속류를 반응대에 공급하여 5염화 안티몬을 연속적으로 불소화시켜 불소화 염화안티몬을 생성시키고, 이때 생성된 불소화 염화 안티몬으로부터 부산물인 염화 수소가스는 연속적으로 제거하고 ; 분리된 불소화 염화 안티몬을 다른 반응대에 연속적으로 도입시키며, 이때 여기에 적어도 한개의 불소가 아닌 할로겐원자를 함유하는 할로알칸을 또한 공급하여, 불소화 염화 안티몬과 할로알칸을 반응시킴으로써 할로알칸중의 불소가 아닌 할로겐 부분을 불소화 염화 안티몬의 불소로 치환시키고 생성된 클로로플루오로 알칸 반응생성물을 회수함을 특징으로 하여 할로알칸을 연속적으로 불소화시키는 방법.
- 제1항에 있어서, 할로알칸이 클로로포름인 방법.
- 제1항에 있어서, 할로알칸과의 반응후의 폐 불소화 염화아티몬을 불화수소가 공급되는 반응대에 재순환시키는 방법.
- 제3항에 있어서, 할로알칸이 클로로포름인 방법.
- 제3항에 있어서, 클로로플루오로알칸 반응 생성물을 분별증류법으로 회수하는 방법.
- 제5항에 있어서, 할로알칸이 클로로포름인 방법.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US50708483A | 1983-06-23 | 1983-06-23 | |
US507084/83 | 1983-06-23 | ||
US507,084 | 1983-06-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR850000378A KR850000378A (ko) | 1985-02-27 |
KR870000955B1 true KR870000955B1 (ko) | 1987-05-14 |
Family
ID=24017188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019840003522A KR870000955B1 (ko) | 1983-06-23 | 1984-06-22 | 연속적 불소화 방법 |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP0129863B1 (ko) |
JP (1) | JPS6019733A (ko) |
KR (1) | KR870000955B1 (ko) |
AU (1) | AU568365B2 (ko) |
BR (1) | BR8402990A (ko) |
CA (1) | CA1247141A (ko) |
DE (1) | DE3465184D1 (ko) |
ES (1) | ES8600180A1 (ko) |
GR (1) | GR81632B (ko) |
IN (1) | IN160224B (ko) |
MX (1) | MX163998B (ko) |
SU (1) | SU1577693A3 (ko) |
ZA (1) | ZA844715B (ko) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8717595D0 (en) * | 1987-07-24 | 1987-09-03 | Ici Plc | Chemical process |
US5026924A (en) | 1989-03-14 | 1991-06-25 | Anaquest, Inc. | Process for production of 1,2,2,2-tetrafluoroethyl difluoromethyl ether |
AR246243A1 (es) * | 1989-07-24 | 1994-07-29 | Du Pont | Procedimiento de intercambio de halogeno. |
US5608127A (en) * | 1990-02-09 | 1997-03-04 | E. I. Dupont De Nemours And Company | Halogen exchange process for manufacture of hydrochlorofluoropropanes |
JP3518169B2 (ja) * | 1996-05-31 | 2004-04-12 | ダイキン工業株式会社 | 1,1,1,3,3−ペンタフルオロプロパンの製造方法 |
AP2350A (en) | 2004-11-17 | 2012-01-16 | Piramal Critical Care Inc | Method for the preparation of sevoflurane. |
EP2172441A1 (en) * | 2008-10-02 | 2010-04-07 | Solvay Fluor GmbH | Process for the manufacture of hydrochlorofluorocarbons using trifluoromethane as fluorinating agent |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE573534C (de) * | 1930-04-05 | 1933-04-01 | Frigidaire Corp | Verfahren zur Trennung bestimmter Fluorhalogenverbindungen aliphatischer Kohlenwasserstoffe |
US2005705A (en) * | 1930-09-20 | 1935-06-18 | Kinetic Chemicals Inc | Preparation of carbon compounds containing fluorine |
US2005711A (en) * | 1931-05-20 | 1935-06-18 | Kinetic Chemicals Inc | Preparation of organic fluorine compounds |
US2005708A (en) * | 1933-08-24 | 1935-06-18 | Kinetic Chemicals Inc | Production of halogenated ethane derivatives containing fluorine |
US2510872A (en) * | 1944-08-03 | 1950-06-06 | Atomic Energy Commission | Method for regenerating antimony pentafluoride from spent antimony halides resulting from the fluorination of organic chlorides |
-
1984
- 1984-06-19 BR BR8402990A patent/BR8402990A/pt not_active IP Right Cessation
- 1984-06-20 IN IN432/CAL/84A patent/IN160224B/en unknown
- 1984-06-20 JP JP59125412A patent/JPS6019733A/ja active Granted
- 1984-06-20 ES ES533561A patent/ES8600180A1/es not_active Expired
- 1984-06-21 AU AU29712/84A patent/AU568365B2/en not_active Ceased
- 1984-06-21 ZA ZA844715A patent/ZA844715B/xx unknown
- 1984-06-21 CA CA000457079A patent/CA1247141A/en not_active Expired
- 1984-06-22 KR KR1019840003522A patent/KR870000955B1/ko not_active IP Right Cessation
- 1984-06-22 SU SU843752789A patent/SU1577693A3/ru active
- 1984-06-22 DE DE8484107156T patent/DE3465184D1/de not_active Expired
- 1984-06-22 EP EP84107156A patent/EP0129863B1/en not_active Expired
- 1984-06-22 GR GR75096A patent/GR81632B/el unknown
- 1984-06-22 MX MX201757A patent/MX163998B/es unknown
Also Published As
Publication number | Publication date |
---|---|
IN160224B (ko) | 1987-07-04 |
JPH0253414B2 (ko) | 1990-11-16 |
JPS6019733A (ja) | 1985-01-31 |
KR850000378A (ko) | 1985-02-27 |
AU568365B2 (en) | 1987-12-24 |
EP0129863A1 (en) | 1985-01-02 |
BR8402990A (pt) | 1985-05-28 |
EP0129863B1 (en) | 1987-08-05 |
SU1577693A3 (ru) | 1990-07-07 |
DE3465184D1 (en) | 1987-09-10 |
ZA844715B (en) | 1986-02-26 |
AU2971284A (en) | 1985-01-03 |
ES533561A0 (es) | 1985-10-01 |
GR81632B (ko) | 1984-12-11 |
MX163998B (es) | 1992-07-07 |
CA1247141A (en) | 1988-12-20 |
ES8600180A1 (es) | 1985-10-01 |
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