CA1107306A - Agglomeres d'alumine de bonne resistance mecanique et procede correspondant - Google Patents
Agglomeres d'alumine de bonne resistance mecanique et procede correspondantInfo
- Publication number
- CA1107306A CA1107306A CA282,676A CA282676A CA1107306A CA 1107306 A CA1107306 A CA 1107306A CA 282676 A CA282676 A CA 282676A CA 1107306 A CA1107306 A CA 1107306A
- Authority
- CA
- Canada
- Prior art keywords
- aluminum
- hydrated
- weight
- alumina
- product
- 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
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims description 33
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 239000000126 substance Substances 0.000 claims abstract description 18
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 16
- 230000007935 neutral effect Effects 0.000 claims abstract description 11
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims abstract description 11
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 9
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 9
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical class [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 9
- YDIQKOIXOOOXQQ-UHFFFAOYSA-H dialuminum;trisulfite Chemical compound [Al+3].[Al+3].[O-]S([O-])=O.[O-]S([O-])=O.[O-]S([O-])=O YDIQKOIXOOOXQQ-UHFFFAOYSA-H 0.000 claims abstract description 9
- JGDITNMASUZKPW-UHFFFAOYSA-K aluminium trichloride hexahydrate Chemical compound O.O.O.O.O.O.Cl[Al](Cl)Cl JGDITNMASUZKPW-UHFFFAOYSA-K 0.000 claims abstract description 8
- 229940009861 aluminum chloride hexahydrate Drugs 0.000 claims abstract description 8
- 238000005979 thermal decomposition reaction Methods 0.000 claims abstract description 6
- 238000005469 granulation Methods 0.000 claims abstract description 4
- 230000003179 granulation Effects 0.000 claims abstract description 4
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 claims abstract description 3
- 229910052593 corundum Inorganic materials 0.000 claims abstract 4
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract 4
- 239000013067 intermediate product Substances 0.000 claims description 41
- 239000008188 pellet Substances 0.000 claims description 34
- 239000000047 product Substances 0.000 claims description 25
- 230000008569 process Effects 0.000 claims description 21
- 238000011282 treatment Methods 0.000 claims description 21
- 238000005056 compaction Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical group Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 12
- 229910052801 chlorine Inorganic materials 0.000 claims description 8
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical group OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 6
- 229940063656 aluminum chloride Drugs 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate group Chemical group S(=O)(=O)([O-])[O-] QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 6
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 3
- 238000013467 fragmentation Methods 0.000 claims description 3
- 238000006062 fragmentation reaction Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- NYUVHYYLPIRKNR-UHFFFAOYSA-H bis(2-oxo-1,3,2,4-dioxathialumetan-4-yl) sulfite hydrate Chemical group O.S(=O)([O-])[O-].[Al+3].S(=O)([O-])[O-].S(=O)([O-])[O-].[Al+3] NYUVHYYLPIRKNR-UHFFFAOYSA-H 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 229910052752 metalloid Inorganic materials 0.000 claims description 2
- 150000002738 metalloids Chemical class 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 241001676573 Minium Species 0.000 claims 1
- ZZCONUBOESKGOK-UHFFFAOYSA-N aluminum;trinitrate;hydrate Chemical group O.[Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O ZZCONUBOESKGOK-UHFFFAOYSA-N 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 claims 1
- CAYKLJBSARHIDI-UHFFFAOYSA-K trichloroalumane;hydrate Chemical group O.Cl[Al](Cl)Cl CAYKLJBSARHIDI-UHFFFAOYSA-K 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 11
- 239000008187 granular material Substances 0.000 description 24
- 239000000460 chlorine Substances 0.000 description 16
- 238000012360 testing method Methods 0.000 description 15
- 238000001354 calcination Methods 0.000 description 11
- 239000011521 glass Substances 0.000 description 9
- 238000005054 agglomeration Methods 0.000 description 7
- 230000002776 aggregation Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- -1 aluminum nitrates hydrates Chemical class 0.000 description 5
- 238000005868 electrolysis reaction Methods 0.000 description 5
- 239000010419 fine particle Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 235000010603 pastilles Nutrition 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000001131 transforming effect Effects 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 238000004131 Bayer process Methods 0.000 description 3
- UDHXJZHVNHGCEC-UHFFFAOYSA-N Chlorophacinone Chemical compound C1=CC(Cl)=CC=C1C(C=1C=CC=CC=1)C(=O)C1C(=O)C2=CC=CC=C2C1=O UDHXJZHVNHGCEC-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000005453 pelletization Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XFBXDGLHUSUNMG-UHFFFAOYSA-N alumane;hydrate Chemical class O.[AlH3] XFBXDGLHUSUNMG-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241001331845 Equus asinus x caballus Species 0.000 description 1
- 229920000825 Fique Polymers 0.000 description 1
- 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 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- LZJOBYGVGAAXFX-UHFFFAOYSA-N O.O.O.O.O.O.[AlH3] Chemical compound O.O.O.O.O.O.[AlH3] LZJOBYGVGAAXFX-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001805 chlorine compounds Chemical group 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000010006 flight Effects 0.000 description 1
- DKAGJZJALZXOOV-UHFFFAOYSA-N hydrate;hydrochloride Chemical compound O.Cl DKAGJZJALZXOOV-UHFFFAOYSA-N 0.000 description 1
- 230000000887 hydrating effect Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- FGHSTPNOXKDLKU-UHFFFAOYSA-N nitric acid;hydrate Chemical compound O.O[N+]([O-])=O FGHSTPNOXKDLKU-UHFFFAOYSA-N 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 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
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/30—Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
- C01F7/308—Thermal decomposition of nitrates
-
- 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
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/30—Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
- C01F7/32—Thermal decomposition of sulfates including complex sulfates, e.g. alums
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/50—Agglomerated particles
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/11—Powder tap density
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/21—Attrition-index or crushing strength of granulates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7623130 | 1976-07-23 | ||
| FR7623131 | 1976-07-23 | ||
| FR7623131A FR2359096A1 (fr) | 1976-07-23 | 1976-07-23 | Agglomeres d'alumine de bonne resistance mecanique obtenus a partir de sulfites d'aluminium hydrates et procede d'obtention |
| FR7623129A FR2359074A1 (fr) | 1976-07-23 | 1976-07-23 | Agglomeres d'alumine de bonne resistance mecanique a granulometrie reglable obtenus a partir de nitrate d'aluminium hydrate et procede d'obtention |
| FR7623128 | 1976-07-23 | ||
| FR7623128A FR2359094A1 (fr) | 1976-07-23 | 1976-07-23 | Agglomeres d'alumine de grande resistance mecanique obtenus a partir de chlorure d'aluminium hexahydrate et procede d'obtention |
| FR7623130A FR2359095A1 (fr) | 1976-07-23 | 1976-07-23 | Agglomeres d'alumine de bonne resistance mecanique obtenus a partir de sulfates d'aluminium hydrates et procede d'obtention |
| FR7623129 | 1976-07-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1107306A true CA1107306A (fr) | 1981-08-18 |
Family
ID=27446346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA282,676A Expired CA1107306A (fr) | 1976-07-23 | 1977-07-13 | Agglomeres d'alumine de bonne resistance mecanique et procede correspondant |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4159313A (enExample) |
| BR (1) | BR7704829A (enExample) |
| CA (1) | CA1107306A (enExample) |
| ES (1) | ES460744A1 (enExample) |
| GR (1) | GR62456B (enExample) |
| IT (1) | IT1084573B (enExample) |
| LU (1) | LU77810A1 (enExample) |
| NZ (1) | NZ184684A (enExample) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5244648A (en) * | 1980-12-23 | 1993-09-14 | Rhone-Poulenc Industries | Process for the preparation of alumina agglomerates |
| US4402932A (en) * | 1982-05-07 | 1983-09-06 | The United States Of America As Represented By The Secretary Of The Interior | Thermal decomposition of aluminum chloride hexahydrate |
| WO1992019535A1 (en) * | 1991-05-06 | 1992-11-12 | Alcan International Limited | Process for producing agglomerates from dust originating from thermal treatment of materials containing alumina |
| US5560876A (en) * | 1991-05-06 | 1996-10-01 | Alcan International Limited | Process for producing agglomerates from dusts |
| US5437852A (en) * | 1993-05-13 | 1995-08-01 | The Babcock & Wilcox Company | Water-soluble pre-ceramic polymers and methods of their production |
| US8834833B2 (en) * | 2008-12-17 | 2014-09-16 | Evonik Degussa Gmbh | Process for preparing an aluminium oxide powder having a high alpha-Al2O3 content |
| CN109650423A (zh) * | 2019-01-03 | 2019-04-19 | 湖北工业大学 | 一种高分散性片状α-氧化铝粉体的制备方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2006851A (en) * | 1931-08-05 | 1935-07-02 | Firm Th Goldschmidt A G | Process for the decomposition of siliceous aluminous minerals |
| US3169827A (en) * | 1960-12-06 | 1965-02-16 | Universal Oil Prod Co | Method of preparing alumina from aluminum sulfate |
| US3366446A (en) * | 1965-07-16 | 1968-01-30 | Allied Chem | Process for decomposition of aluminum nitrate nonahydrate |
-
1977
- 1977-07-13 CA CA282,676A patent/CA1107306A/fr not_active Expired
- 1977-07-13 IT IT25668/77A patent/IT1084573B/it active
- 1977-07-14 ES ES460744A patent/ES460744A1/es not_active Expired
- 1977-07-19 NZ NZ184684A patent/NZ184684A/xx unknown
- 1977-07-21 LU LU77810A patent/LU77810A1/xx unknown
- 1977-07-21 GR GR54006A patent/GR62456B/el unknown
- 1977-07-22 BR BR7704829A patent/BR7704829A/pt unknown
- 1977-07-22 US US05/818,204 patent/US4159313A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| IT1084573B (it) | 1985-05-25 |
| US4159313A (en) | 1979-06-26 |
| ES460744A1 (es) | 1978-12-01 |
| NZ184684A (en) | 1979-12-11 |
| LU77810A1 (enExample) | 1978-02-02 |
| GR62456B (en) | 1979-04-12 |
| BR7704829A (pt) | 1978-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |