CA1053847A - Melt finishing process for polymers produced by vapor state polymerization processes - Google Patents
Melt finishing process for polymers produced by vapor state polymerization processesInfo
- Publication number
- CA1053847A CA1053847A CA241,718A CA241718A CA1053847A CA 1053847 A CA1053847 A CA 1053847A CA 241718 A CA241718 A CA 241718A CA 1053847 A CA1053847 A CA 1053847A
- Authority
- CA
- Canada
- Prior art keywords
- polymer
- reactor
- monomer
- molten
- polymerization
- 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
- 229920000642 polymer Polymers 0.000 title claims abstract description 103
- 238000006116 polymerization reaction Methods 0.000 title claims abstract description 53
- 238000007730 finishing process Methods 0.000 title abstract 2
- 239000003054 catalyst Substances 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 32
- 230000008569 process Effects 0.000 claims abstract description 31
- 239000007787 solid Substances 0.000 claims abstract description 20
- 239000000178 monomer Substances 0.000 claims description 31
- 239000007789 gas Substances 0.000 claims description 17
- QQONPFPTGQHPMA-UHFFFAOYSA-N Propene Chemical compound CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 13
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 12
- 239000000654 additive Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 claims 2
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 claims 1
- 238000002844 melting Methods 0.000 abstract description 9
- 230000008018 melting Effects 0.000 abstract description 9
- 239000000155 melt Substances 0.000 abstract description 5
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 18
- 239000000047 product Substances 0.000 description 16
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 9
- 239000001257 hydrogen Substances 0.000 description 9
- 229910052739 hydrogen Inorganic materials 0.000 description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 6
- 239000002421 finishing Substances 0.000 description 6
- 238000010791 quenching Methods 0.000 description 6
- 239000012808 vapor phase Substances 0.000 description 6
- 239000005977 Ethylene Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 5
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- -1 if used Substances 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910000423 chromium oxide Inorganic materials 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 2
- 150000003623 transition metal compounds Chemical class 0.000 description 2
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 description 2
- 239000003039 volatile agent Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229940117975 chromium trioxide Drugs 0.000 description 1
- GAMDZJFZMJECOS-UHFFFAOYSA-N chromium(6+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Cr+6] GAMDZJFZMJECOS-UHFFFAOYSA-N 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- YNLAOSYQHBDIKW-UHFFFAOYSA-M diethylaluminium chloride Chemical compound CC[Al](Cl)CC YNLAOSYQHBDIKW-UHFFFAOYSA-M 0.000 description 1
- 238000004836 empirical method Methods 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 239000012632 extractable Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 101150019895 thiE gene Proteins 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- YONPGGFAJWQGJC-UHFFFAOYSA-K titanium(iii) chloride Chemical compound Cl[Ti](Cl)Cl YONPGGFAJWQGJC-UHFFFAOYSA-K 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- MCULRUJILOGHCJ-UHFFFAOYSA-N triisobutylaluminium Chemical compound CC(C)C[Al](CC(C)C)CC(C)C MCULRUJILOGHCJ-UHFFFAOYSA-N 0.000 description 1
- 150000003682 vanadium compounds 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
- C08F2/00—Processes of polymerisation
- C08F2/34—Polymerisation in gaseous state
-
- 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
-
- 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
- C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F110/02—Ethene
-
- 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
- C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F110/04—Monomers containing three or four carbon atoms
- C08F110/06—Propene
-
- 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
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S526/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S526/909—Polymerization characterized by particle size of product
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polymerisation Methods In General (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Polyesters Or Polycarbonates (AREA)
- Other Resins Obtained By Reactions Not Involving Carbon-To-Carbon Unsaturated Bonds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/533,022 US3970611A (en) | 1974-12-16 | 1974-12-16 | Melt finishing process for polymers produced by vapor state polymerization processes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1053847A true CA1053847A (en) | 1979-05-01 |
Family
ID=24124134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA241,718A Expired CA1053847A (en) | 1974-12-16 | 1975-12-15 | Melt finishing process for polymers produced by vapor state polymerization processes |
Country Status (19)
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1053846A (en) * | 1974-12-16 | 1979-05-01 | The Standard Oil Company | Horizontal reactor for the vapor phase polymerization of monomers |
| EP0069806B1 (en) * | 1981-07-13 | 1985-05-15 | Dow Chemical (Nederland) B.V. | Process for producing polyethylene having constant physical and chemical properties |
| US4543399A (en) * | 1982-03-24 | 1985-09-24 | Union Carbide Corporation | Fluidized bed reaction systems |
| US4588790A (en) * | 1982-03-24 | 1986-05-13 | Union Carbide Corporation | Method for fluidized bed polymerization |
| US4710538A (en) * | 1986-03-10 | 1987-12-01 | Union Carbide Corporation | Process for the production of a sticky polymer |
| JPH01155304U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1988-04-12 | 1989-10-25 | ||
| KR910004670A (ko) | 1989-08-28 | 1991-03-29 | 노기 사다오 | 올레핀 중합용 촉매 |
| US5244926A (en) * | 1992-06-16 | 1993-09-14 | The Dow Chemical Company | Preparation of ion exchange and adsorbent copolymers |
| US6350054B1 (en) * | 1997-12-08 | 2002-02-26 | Bp Corporation North America Inc. | Agitator for a horizontal polymerization reactor having contiguous paddle stations with paddles and sub-stations with sub-station paddles |
| US6803339B2 (en) | 2001-09-14 | 2004-10-12 | Bp Corporation North America Inc. | Latent metallocene catalyst systems for olefin polymerization |
| CN1771268A (zh) | 2003-03-26 | 2006-05-10 | Bp北美公司 | 含有作为电子给体的环烷二元羧酸酯的烯烃聚合催化剂 |
| WO2011155999A1 (en) | 2010-06-10 | 2011-12-15 | Ineos Usa Llc | Controlling h2 distribution in a horizontal stirred bed reactor |
| US9243138B2 (en) | 2011-03-18 | 2016-01-26 | Ineos Manufacturing Belgium Nv | Propylene-ethylene random copolymer |
| US8383740B1 (en) | 2011-08-12 | 2013-02-26 | Ineos Usa Llc | Horizontal agitator |
| WO2014118149A1 (en) | 2013-01-29 | 2014-08-07 | Ineos Europe Ag | Injection moulded polypropylene articles |
| EP4469494A1 (en) | 2022-01-27 | 2024-12-04 | Ineos Europe AG | Catalyst composition |
| EP4473055A1 (en) | 2022-02-03 | 2024-12-11 | Ineos Europe AG | Polyolefin blend containing recycled aluminium |
| US20250154299A1 (en) | 2022-02-09 | 2025-05-15 | Ineos Europe Ag | Catalyst component |
| CN120303311A (zh) | 2022-12-09 | 2025-07-11 | 英尼奥斯欧洲股份公司 | 催化剂组分 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR83714E (fr) * | 1963-02-26 | 1964-10-02 | Pechiney Saint Gobain | Procédé de préparation en masse de polymères et de copolymères à base de chlorure de vinyle |
| NL219855A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1956-08-16 | |||
| US3023203A (en) * | 1957-08-16 | 1962-02-27 | Phillips Petroleum Co | Polymerization process |
| US2936303A (en) * | 1958-04-25 | 1960-05-10 | Phillips Petroleum Co | Olefin polymerization |
| US3049527A (en) * | 1959-12-08 | 1962-08-14 | Sun Oil Co | Process and apparatus for the continuous reaction of gaseous reactants |
| US3338986A (en) * | 1964-04-23 | 1967-08-29 | Rexall Drug Chemical | Continuous block copolymerization process |
| US3469948A (en) * | 1966-08-24 | 1969-09-30 | Dart Ind Inc | Paddle-type polymerization reactor |
| DE1745114B2 (de) * | 1967-05-27 | 1980-10-02 | Chemische Werke Huels Ag, 4370 Marl | Verfahren zur Polymerisation von Äthylen, Propylen und/oder Butylen in der Gasphase |
| US3625932A (en) * | 1967-12-26 | 1971-12-07 | Phillips Petroleum Co | Vapor phase polymerization of vinyl chloride in a multiple stage fluidized bed reactor |
| DE1805765C3 (de) * | 1968-10-29 | 1980-09-11 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Polymerisation von Propylen |
-
1974
- 1974-12-16 US US05/533,022 patent/US3970611A/en not_active Expired - Lifetime
-
1975
- 1975-12-12 IN IN2333/CAL/1975A patent/IN142970B/en unknown
- 1975-12-12 NO NO754246A patent/NO144571C/no unknown
- 1975-12-15 CA CA241,718A patent/CA1053847A/en not_active Expired
- 1975-12-15 DE DE2556417A patent/DE2556417C2/de not_active Expired
- 1975-12-16 AR AR261639A patent/AR227607A1/es active
- 1975-12-16 BE BE162798A patent/BE836703A/xx not_active IP Right Cessation
- 1975-12-16 NL NLAANVRAGE7514638,A patent/NL182809C/xx not_active IP Right Cessation
- 1975-12-16 JP JP50150081A patent/JPS6031201B2/ja not_active Expired
- 1975-12-16 FR FR7538558A patent/FR2295059A1/fr active Granted
- 1975-12-16 AT AT954075A patent/AT346579B/de not_active IP Right Cessation
- 1975-12-16 PH PH7517875A patent/PH12323A/en unknown
- 1975-12-16 BR BR7508336*A patent/BR7508336A/pt unknown
- 1975-12-16 ES ES443516A patent/ES443516A1/es not_active Expired
- 1975-12-16 DD DD190198A patent/DD125745A5/xx unknown
- 1975-12-16 IT IT52724/75A patent/IT1052587B/it active
- 1975-12-16 GB GB51469/75A patent/GB1490457A/en not_active Expired
- 1975-12-17 TR TR19070A patent/TR19070A/xx unknown
-
1976
- 1976-01-14 YU YU00071/76A patent/YU7176A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL7514638A (nl) | 1976-06-18 |
| BE836703A (fr) | 1976-06-16 |
| FR2295059A1 (fr) | 1976-07-16 |
| US3970611A (en) | 1976-07-20 |
| FR2295059B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1979-06-22 |
| BR7508336A (pt) | 1976-08-24 |
| YU7176A (en) | 1982-05-31 |
| NO144571B (no) | 1981-06-15 |
| AR227607A1 (es) | 1982-11-30 |
| NO754246L (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-06-17 |
| JPS5186585A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-07-29 |
| AT346579B (de) | 1978-11-10 |
| ATA954075A (de) | 1978-03-15 |
| ES443516A1 (es) | 1977-05-16 |
| DE2556417A1 (de) | 1976-06-24 |
| TR19070A (tr) | 1978-05-01 |
| NL182809C (nl) | 1988-05-16 |
| DE2556417C2 (de) | 1986-01-16 |
| IT1052587B (it) | 1981-07-20 |
| NL182809B (nl) | 1987-12-16 |
| NO144571C (no) | 1981-09-23 |
| JPS6031201B2 (ja) | 1985-07-20 |
| IN142970B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1977-09-17 |
| DD125745A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1977-05-18 |
| GB1490457A (en) | 1977-11-02 |
| PH12323A (en) | 1979-01-16 |
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