SE439775B - Forfarande for polymerisation av en 1-alken med 2-8 kolatomer med anvendning av kiseldioxid som katalysatorberare - Google Patents
Forfarande for polymerisation av en 1-alken med 2-8 kolatomer med anvendning av kiseldioxid som katalysatorberareInfo
- Publication number
- SE439775B SE439775B SE7807948A SE7807948A SE439775B SE 439775 B SE439775 B SE 439775B SE 7807948 A SE7807948 A SE 7807948A SE 7807948 A SE7807948 A SE 7807948A SE 439775 B SE439775 B SE 439775B
- Authority
- SE
- Sweden
- Prior art keywords
- chromium
- compound
- polymerization
- support
- catalyst
- Prior art date
Links
- 239000003054 catalyst Substances 0.000 title claims description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims description 33
- 238000006116 polymerization reaction Methods 0.000 title claims description 20
- 239000000377 silicon dioxide Substances 0.000 title claims description 11
- 238000000034 method Methods 0.000 title claims description 9
- 235000012239 silicon dioxide Nutrition 0.000 title 1
- 239000011651 chromium Substances 0.000 claims description 21
- 150000001875 compounds Chemical class 0.000 claims description 19
- 150000001845 chromium compounds Chemical class 0.000 claims description 18
- 125000004432 carbon atom Chemical group C* 0.000 claims description 15
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 13
- 239000011148 porous material Substances 0.000 claims description 13
- 229910052708 sodium Inorganic materials 0.000 claims description 13
- 239000011734 sodium Substances 0.000 claims description 13
- 239000000741 silica gel Substances 0.000 claims description 11
- 229910002027 silica gel Inorganic materials 0.000 claims description 11
- 150000002902 organometallic compounds Chemical class 0.000 claims description 9
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 8
- 239000005977 Ethylene Substances 0.000 claims description 8
- 125000000217 alkyl group Chemical group 0.000 claims description 8
- 239000012298 atmosphere Substances 0.000 claims description 6
- 230000000737 periodic effect Effects 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000007795 chemical reaction product Substances 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 claims description 2
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 description 18
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 17
- 238000010438 heat treatment Methods 0.000 description 15
- 239000002270 dispersing agent Substances 0.000 description 13
- 239000011777 magnesium Substances 0.000 description 11
- 239000002904 solvent Substances 0.000 description 11
- 229910052749 magnesium Inorganic materials 0.000 description 10
- 239000000843 powder Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 239000000725 suspension Substances 0.000 description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 7
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 7
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 6
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical class CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- MJSNUBOCVAKFIJ-LNTINUHCSA-N chromium;(z)-4-oxoniumylidenepent-2-en-2-olate Chemical compound [Cr].C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O MJSNUBOCVAKFIJ-LNTINUHCSA-N 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 239000000499 gel Substances 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- MCULRUJILOGHCJ-UHFFFAOYSA-N triisobutylaluminium Chemical compound CC(C)C[Al](CC(C)C)CC(C)C MCULRUJILOGHCJ-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 4
- 125000001931 aliphatic group Chemical group 0.000 description 4
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 4
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 235000013844 butane Nutrition 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 125000000753 cycloalkyl group Chemical group 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical class CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 3
- 125000002734 organomagnesium group Chemical group 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- 229910052790 beryllium Inorganic materials 0.000 description 2
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000001273 butane Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000012876 carrier material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010908 decantation Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 150000008282 halocarbons Chemical class 0.000 description 2
- 239000001282 iso-butane Substances 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 150000002901 organomagnesium compounds Chemical class 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- POILWHVDKZOXJZ-ARJAWSKDSA-M (z)-4-oxopent-2-en-2-olate Chemical compound C\C([O-])=C\C(C)=O POILWHVDKZOXJZ-ARJAWSKDSA-M 0.000 description 1
- AZUYLZMQTIKGSC-UHFFFAOYSA-N 1-[6-[4-(5-chloro-6-methyl-1H-indazol-4-yl)-5-methyl-3-(1-methylindazol-5-yl)pyrazol-1-yl]-2-azaspiro[3.3]heptan-2-yl]prop-2-en-1-one Chemical compound ClC=1C(=C2C=NNC2=CC=1C)C=1C(=NN(C=1C)C1CC2(CN(C2)C(C=C)=O)C1)C=1C=C2C=NN(C2=CC=1)C AZUYLZMQTIKGSC-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- RTAQCQOZRWKSTQ-UHFFFAOYSA-N CC(C)C[Mg]CC(C)C Chemical compound CC(C)C[Mg]CC(C)C RTAQCQOZRWKSTQ-UHFFFAOYSA-N 0.000 description 1
- UDISFXVHGUKXSU-UHFFFAOYSA-N CCCCCCCCCC[Mg]CCCCCCCCCC Chemical compound CCCCCCCCCC[Mg]CCCCCCCCCC UDISFXVHGUKXSU-UHFFFAOYSA-N 0.000 description 1
- UNCRKDFOOFDWDK-UHFFFAOYSA-N CCCCC[Mg]CCCCC Chemical compound CCCCC[Mg]CCCCC UNCRKDFOOFDWDK-UHFFFAOYSA-N 0.000 description 1
- ABXKXVWOKXSBNR-UHFFFAOYSA-N CCC[Mg]CCC Chemical compound CCC[Mg]CCC ABXKXVWOKXSBNR-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- FGUJWQZQKHUJMW-UHFFFAOYSA-N [AlH3].[B] Chemical compound [AlH3].[B] FGUJWQZQKHUJMW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- WJTCGQSWYFHTAC-UHFFFAOYSA-N cyclooctane Chemical compound C1CCCCCCC1 WJTCGQSWYFHTAC-UHFFFAOYSA-N 0.000 description 1
- 239000004914 cyclooctane Substances 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012685 gas phase polymerization Methods 0.000 description 1
- 229910052736 halogen Chemical group 0.000 description 1
- 150000002367 halogens Chemical group 0.000 description 1
- ILPNRWUGFSPGAA-UHFFFAOYSA-N heptane-2,4-dione Chemical compound CCCC(=O)CC(C)=O ILPNRWUGFSPGAA-UHFFFAOYSA-N 0.000 description 1
- NDOGLIPWGGRQCO-UHFFFAOYSA-N hexane-2,4-dione Chemical compound CCC(=O)CC(C)=O NDOGLIPWGGRQCO-UHFFFAOYSA-N 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- WRYKIHMRDIOPSI-UHFFFAOYSA-N magnesium;benzene Chemical compound [Mg+2].C1=CC=[C-]C=C1.C1=CC=[C-]C=C1 WRYKIHMRDIOPSI-UHFFFAOYSA-N 0.000 description 1
- KJJBSBKRXUVBMX-UHFFFAOYSA-N magnesium;butane Chemical group [Mg+2].CCC[CH2-].CCC[CH2-] KJJBSBKRXUVBMX-UHFFFAOYSA-N 0.000 description 1
- AAPWDGUQUXVEAO-UHFFFAOYSA-N magnesium;dodecane Chemical compound [Mg+2].CCCCCCCCCCC[CH2-].CCCCCCCCCCC[CH2-] AAPWDGUQUXVEAO-UHFFFAOYSA-N 0.000 description 1
- DLPASUVGCQPFFO-UHFFFAOYSA-N magnesium;ethane Chemical compound [Mg+2].[CH2-]C.[CH2-]C DLPASUVGCQPFFO-UHFFFAOYSA-N 0.000 description 1
- KMYFNYFIPIGQQZ-UHFFFAOYSA-N magnesium;octane Chemical compound [Mg+2].CCCCCCC[CH2-].CCCCCCC[CH2-] KMYFNYFIPIGQQZ-UHFFFAOYSA-N 0.000 description 1
- DQZLQYHGCKLKGU-UHFFFAOYSA-N magnesium;propane Chemical compound [Mg+2].C[CH-]C.C[CH-]C DQZLQYHGCKLKGU-UHFFFAOYSA-N 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- GJYXGIIWJFZCLN-UHFFFAOYSA-N octane-2,4-dione Chemical compound CCCCC(=O)CC(C)=O GJYXGIIWJFZCLN-UHFFFAOYSA-N 0.000 description 1
- PJEPOHXMGDEIMR-UHFFFAOYSA-N octane-3,5-dione Chemical compound CCCC(=O)CC(=O)CC PJEPOHXMGDEIMR-UHFFFAOYSA-N 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 150000003738 xylenes Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/02—Carriers therefor
- C08F4/025—Metal oxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE7707959,A NL189713C (nl) | 1977-07-18 | 1977-07-18 | Katalysator op drager voor de polymerisatie van 1-alkenen, in het bijzonder etheen. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7807948L SE7807948L (sv) | 1979-01-19 |
| SE439775B true SE439775B (sv) | 1985-07-01 |
Family
ID=19828895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7807948A SE439775B (sv) | 1977-07-18 | 1978-07-18 | Forfarande for polymerisation av en 1-alken med 2-8 kolatomer med anvendning av kiseldioxid som katalysatorberare |
Country Status (10)
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3841436A1 (de) * | 1988-12-09 | 1990-06-13 | Basf Ag | Verfahren zum herstellen von homo- sowie copolymerisaten des ethens durch phillips-katalyse |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5260388A (en) * | 1975-11-12 | 1977-05-18 | Hitachi Seiko Ltd | Error correcting system for numerical controller |
| NL171273C (nl) * | 1976-05-24 | 1983-03-01 | Stamicarbon | Werkwijze voor het polymeriseren van alkenen en werkwijze voor het bereiden van een chroomoxyde-op drager-katalysator. |
| JPS5384502A (en) * | 1976-12-29 | 1978-07-26 | Seiko Instr & Electronics Ltd | Selective calling unit |
-
1977
- 1977-07-18 NL NLAANVRAGE7707959,A patent/NL189713C/xx not_active IP Right Cessation
-
1978
- 1978-07-04 ES ES471405A patent/ES471405A1/es not_active Expired
- 1978-07-07 AT AT0494078A patent/AT367073B/de active
- 1978-07-12 IT IT50269/78A patent/IT1105094B/it active
- 1978-07-12 JP JP8411378A patent/JPS5421481A/ja active Pending
- 1978-07-12 BE BE189930A patent/BE868936A/xx not_active IP Right Cessation
- 1978-07-17 FR FR7821134A patent/FR2398083A1/fr active Granted
- 1978-07-18 DE DE19782831533 patent/DE2831533A1/de active Granted
- 1978-07-18 GB GB787830249A patent/GB2001329B/en not_active Expired
- 1978-07-18 SE SE7807948A patent/SE439775B/sv not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NL189713B (nl) | 1993-02-01 |
| IT7850269A0 (it) | 1978-07-12 |
| FR2398083B1 (enrdf_load_stackoverflow) | 1982-11-19 |
| FR2398083A1 (fr) | 1979-02-16 |
| DE2831533C2 (enrdf_load_stackoverflow) | 1990-12-06 |
| JPS5421481A (en) | 1979-02-17 |
| GB2001329B (en) | 1982-01-27 |
| GB2001329A (en) | 1979-01-31 |
| NL7707959A (nl) | 1979-01-22 |
| ES471405A1 (es) | 1979-01-16 |
| IT1105094B (it) | 1985-10-28 |
| SE7807948L (sv) | 1979-01-19 |
| NL189713C (nl) | 1993-07-01 |
| DE2831533A1 (de) | 1979-02-01 |
| ATA494078A (de) | 1981-10-15 |
| BE868936A (nl) | 1979-01-12 |
| AT367073B (de) | 1982-05-25 |
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