JPS63369B2 - - Google Patents
Info
- Publication number
- JPS63369B2 JPS63369B2 JP59151159A JP15115984A JPS63369B2 JP S63369 B2 JPS63369 B2 JP S63369B2 JP 59151159 A JP59151159 A JP 59151159A JP 15115984 A JP15115984 A JP 15115984A JP S63369 B2 JPS63369 B2 JP S63369B2
- Authority
- JP
- Japan
- Prior art keywords
- tri
- amine
- aluminum
- product
- aluminum trifluoride
- 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.)
- Expired
Links
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 58
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 48
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 claims description 43
- 150000001412 amines Chemical class 0.000 claims description 32
- 150000003973 alkyl amines Chemical class 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 23
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 22
- 229910000077 silane Inorganic materials 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 239000012429 reaction media Substances 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 13
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 12
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 claims description 12
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 7
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical group CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 claims description 7
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 150000003512 tertiary amines Chemical class 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 150000002430 hydrocarbons Chemical class 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- 239000011541 reaction mixture Substances 0.000 claims description 3
- ZQXCQTAELHSNAT-UHFFFAOYSA-N 1-chloro-3-nitro-5-(trifluoromethyl)benzene Chemical compound [O-][N+](=O)C1=CC(Cl)=CC(C(F)(F)F)=C1 ZQXCQTAELHSNAT-UHFFFAOYSA-N 0.000 claims description 2
- 239000008247 solid mixture Substances 0.000 claims 2
- 239000004215 Carbon black (E152) Substances 0.000 claims 1
- 239000000047 product Substances 0.000 description 27
- SPRIOUNJHPCKPV-UHFFFAOYSA-N hydridoaluminium Chemical compound [AlH] SPRIOUNJHPCKPV-UHFFFAOYSA-N 0.000 description 21
- 229910016569 AlF 3 Inorganic materials 0.000 description 18
- 239000007787 solid Substances 0.000 description 18
- 239000007789 gas Substances 0.000 description 17
- 239000000203 mixture Substances 0.000 description 15
- -1 amine arenes Chemical class 0.000 description 13
- 239000000243 solution Substances 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 238000004458 analytical method Methods 0.000 description 8
- 229910004014 SiF4 Inorganic materials 0.000 description 7
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical group CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 description 6
- 239000000706 filtrate Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 229940086542 triethylamine Drugs 0.000 description 6
- 238000005481 NMR spectroscopy Methods 0.000 description 5
- 229910020828 NaAlH4 Inorganic materials 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 239000000376 reactant Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 4
- 229910010082 LiAlH Inorganic materials 0.000 description 4
- 235000012970 cakes Nutrition 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 241001120493 Arene Species 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 229910000086 alane Inorganic materials 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 230000000536 complexating effect Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 150000002170 ethers Chemical class 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 230000004580 weight loss Effects 0.000 description 3
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 229910000091 aluminium hydride Inorganic materials 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 235000011089 carbon dioxide Nutrition 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000003039 volatile agent Substances 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 1
- 208000035404 Autolysis Diseases 0.000 description 1
- 206010057248 Cell death Diseases 0.000 description 1
- 239000005046 Chlorosilane Substances 0.000 description 1
- 229910010084 LiAlH4 Inorganic materials 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229910003902 SiCl 4 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- NGMRHZNERZGMEZ-UHFFFAOYSA-N alumane N,N-dimethylmethanamine Chemical compound [H][Al]([H])[H].CN(C)C NGMRHZNERZGMEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical class Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 235000021463 dry cake Nutrition 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000002481 ethanol extraction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012442 inert solvent Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000012280 lithium aluminium hydride Substances 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- AUHZEENZYGFFBQ-UHFFFAOYSA-N mesitylene Substances CC1=CC(C)=CC(C)=C1 AUHZEENZYGFFBQ-UHFFFAOYSA-N 0.000 description 1
- 125000001827 mesitylenyl group Chemical group [H]C1=C(C(*)=C(C([H])=C1C([H])([H])[H])C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- DAZXVJBJRMWXJP-UHFFFAOYSA-N n,n-dimethylethylamine Chemical compound CCN(C)C DAZXVJBJRMWXJP-UHFFFAOYSA-N 0.000 description 1
- ZUHZZVMEUAUWHY-UHFFFAOYSA-N n,n-dimethylpropan-1-amine Chemical compound CCCN(C)C ZUHZZVMEUAUWHY-UHFFFAOYSA-N 0.000 description 1
- GNVRJGIVDSQCOP-UHFFFAOYSA-N n-ethyl-n-methylethanamine Chemical compound CCN(C)CC GNVRJGIVDSQCOP-UHFFFAOYSA-N 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000012066 reaction slurry Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 230000028043 self proteolysis Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 239000005049 silicon tetrachloride Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 125000005270 trialkylamine group Chemical group 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- RKBCYCFRFCNLTO-UHFFFAOYSA-N triisopropylamine Chemical compound CC(C)N(C(C)C)C(C)C RKBCYCFRFCNLTO-UHFFFAOYSA-N 0.000 description 1
- YFTHZRPMJXBUME-UHFFFAOYSA-N tripropylamine Chemical compound CCCN(CCC)CCC YFTHZRPMJXBUME-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/48—Halides, with or without other cations besides aluminium
- C01F7/50—Fluorides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/04—Hydrides of silicon
- C01B33/043—Monosilane
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Silicon Compounds (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
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èš±è«æ±ã®ç¯å²ç¬¬ïŒé ã«èšèŒã®æ¹æ³ã ïŒïŒ ããªäœçŽã¢ã«ãã«ã¢ãã³ã第(4)段éã§äœ¿çš
ããæž©åºŠããã³å§åæ¢ä»¶ã«ãããŠèžçºãããç¹èš±
è«æ±ã®ç¯å²ç¬¬ïŒé ã«èšèŒã®æ¹æ³ã
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US516130 | 1983-07-21 | ||
| US06/516,130 US4474743A (en) | 1983-07-21 | 1983-07-21 | Preparation of silane from amine alanes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6071514A JPS6071514A (ja) | 1985-04-23 |
| JPS63369B2 true JPS63369B2 (ja) | 1988-01-06 |
Family
ID=24054254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59151159A Granted JPS6071514A (ja) | 1983-07-21 | 1984-07-20 | ã·ã©ã³ãšäžåŒåã¢ã«ãããŠã ãšãå ±ã«è£œé ããæ¹æ³ |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4474743A (ja) |
| EP (1) | EP0133106B1 (ja) |
| JP (1) | JPS6071514A (ja) |
| CA (1) | CA1212515A (ja) |
| DE (1) | DE3470149D1 (ja) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2601937B1 (fr) * | 1986-07-23 | 1990-09-07 | Commissariat Energie Atomique | Procede de preparation de fluores metalliques utilisables pour la fabrication de verres fluores |
| US4757154A (en) * | 1986-11-04 | 1988-07-12 | Ethyl Corporation | Preparation of silane and amine alanes |
| US4748260A (en) * | 1986-12-22 | 1988-05-31 | Ethyl Corporation | Preparation of amine alanes |
| US4778668A (en) * | 1986-12-22 | 1988-10-18 | Ethyl Corporation | Preparation of silane and metal aluminum halide co-product |
| US4782171A (en) * | 1987-05-20 | 1988-11-01 | Ethyl Corporation | Stabilization of amine alanes |
| US4866191A (en) * | 1987-05-20 | 1989-09-12 | Ethyl Corporation | Stabilization of amine alanes |
| US4730070A (en) * | 1987-05-20 | 1988-03-08 | Ethyl Corporation | Stabilization of amine alanes |
| US4855120A (en) * | 1988-10-24 | 1989-08-08 | Ethyl Corporation | Production of silane and useful coproducts |
| US4957726A (en) * | 1989-04-12 | 1990-09-18 | Ethyl Corporation | Preparation of amine alanes and lithium aluminum tetrahydride |
| US4927616A (en) * | 1989-10-02 | 1990-05-22 | Ethyl Corporation | Preparation of silane and amine alanes |
| US4925963A (en) * | 1989-10-12 | 1990-05-15 | Ethyl Corporation | Process for reduction of organosilicon halides |
| US5191099A (en) * | 1991-09-05 | 1993-03-02 | Regents Of The University Of Minnesota | Chemical vapor deposition of aluminum films using dimethylethylamine alane |
| US7098339B2 (en) * | 2005-01-18 | 2006-08-29 | Praxair Technology, Inc. | Processes for the production of organometallic compounds |
| US8388925B2 (en) * | 2009-12-30 | 2013-03-05 | Memc Electronic Materials, Inc. | Methods for producing aluminum trifluoride |
| CN102947033B (zh) * | 2010-06-18 | 2014-12-24 | æ¥äžå·¥åšæ ªåŒäŒç€Ÿ | ç¯åœ¢åŒååš |
| CN103648980B (zh) | 2011-06-28 | 2017-10-13 | Memcçµåæææéå ¬åž | åšæ³¡çœ©å¡äžå¶å€ç¡ ç·çæ¹æ³ |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA651762A (en) * | 1962-11-06 | E. Ringwald Owen | Production of monosilane | |
| US2680059A (en) * | 1951-08-03 | 1954-06-01 | Metal Hydrides Inc | Method for stabilizing alkali metal and alkaline earth metal aluminum hydrides |
| US3043664A (en) * | 1958-06-09 | 1962-07-10 | Allied Chem | Production of pure silane |
| US3159626A (en) * | 1963-02-27 | 1964-12-01 | Ethyl Corp | Triethylene-diamine alane and a process for its preparation |
| FR1517952A (fr) * | 1967-02-08 | 1968-03-22 | Ugine Kuhlmann | Production de fluorure d'aluminium |
| US3642853A (en) * | 1968-12-18 | 1972-02-15 | Nat Distillers Chem Corp | Synthesis of aluminum hydride and tertiary amine adducts thereof |
| US4006095A (en) * | 1972-03-31 | 1977-02-01 | Lithium Corporation Of America | Stable hydrocarbon solutions of aluminum hydride |
| US3926833A (en) * | 1973-03-21 | 1975-12-16 | Lithium Corp | Preparation of mixed chlorohydrides of aluminum |
| US4374111A (en) * | 1980-11-21 | 1983-02-15 | Allied Corporation | Production of silane |
-
1983
- 1983-07-21 US US06/516,130 patent/US4474743A/en not_active Expired - Lifetime
-
1984
- 1984-07-11 CA CA000458623A patent/CA1212515A/en not_active Expired
- 1984-07-17 DE DE8484401503T patent/DE3470149D1/de not_active Expired
- 1984-07-17 EP EP84401503A patent/EP0133106B1/en not_active Expired
- 1984-07-20 JP JP59151159A patent/JPS6071514A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| EP0133106B1 (en) | 1988-03-30 |
| EP0133106A2 (en) | 1985-02-13 |
| US4474743A (en) | 1984-10-02 |
| EP0133106A3 (en) | 1986-02-12 |
| CA1212515A (en) | 1986-10-14 |
| JPS6071514A (ja) | 1985-04-23 |
| DE3470149D1 (en) | 1988-05-05 |
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