CH633236A5 - Verfahren zur herstellung eisenarmer zeolithischer aluminiumsilikate aus eisenhaltigen mineralischen aluminiumsilikatrohstoffen. - Google Patents
Verfahren zur herstellung eisenarmer zeolithischer aluminiumsilikate aus eisenhaltigen mineralischen aluminiumsilikatrohstoffen. Download PDFInfo
- Publication number
- CH633236A5 CH633236A5 CH964977A CH964977A CH633236A5 CH 633236 A5 CH633236 A5 CH 633236A5 CH 964977 A CH964977 A CH 964977A CH 964977 A CH964977 A CH 964977A CH 633236 A5 CH633236 A5 CH 633236A5
- Authority
- CH
- Switzerland
- Prior art keywords
- iron
- treatment
- aluminum silicate
- carried out
- raw materials
- Prior art date
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 58
- 229910052742 iron Inorganic materials 0.000 title claims description 32
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims description 26
- 239000011707 mineral Substances 0.000 title claims description 26
- -1 ALUMINUM SILICATES Chemical class 0.000 title claims description 23
- 229910052782 aluminium Inorganic materials 0.000 title claims description 22
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 title claims description 18
- 239000002994 raw material Substances 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 34
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 30
- 235000010755 mineral Nutrition 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 19
- 229910001868 water Inorganic materials 0.000 claims description 19
- 239000003513 alkali Substances 0.000 claims description 15
- 235000012211 aluminium silicate Nutrition 0.000 claims description 15
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 14
- 239000005995 Aluminium silicate Substances 0.000 claims description 11
- 238000010335 hydrothermal treatment Methods 0.000 claims description 11
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000012670 alkaline solution Substances 0.000 claims description 7
- 239000003518 caustics Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- SLINHMUFWFWBMU-UHFFFAOYSA-N Triisopropanolamine Chemical compound CC(O)CN(CC(C)O)CC(C)O SLINHMUFWFWBMU-UHFFFAOYSA-N 0.000 claims description 4
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- 239000002808 molecular sieve Substances 0.000 description 27
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 27
- 239000000047 product Substances 0.000 description 17
- 239000000243 solution Substances 0.000 description 14
- 239000000203 mixture Substances 0.000 description 12
- 239000008262 pumice Substances 0.000 description 9
- 229960004418 trolamine Drugs 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 7
- 235000019353 potassium silicate Nutrition 0.000 description 6
- 238000002441 X-ray diffraction Methods 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 238000001994 activation Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 101150020052 AADAT gene Proteins 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group 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 3
- 150000004645 aluminates Chemical class 0.000 description 3
- 238000005341 cation exchange Methods 0.000 description 3
- 150000001768 cations Chemical group 0.000 description 3
- 239000008139 complexing agent Substances 0.000 description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical class O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 235000013312 flour Nutrition 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- DNEHKUCSURWDGO-UHFFFAOYSA-N aluminum sodium Chemical compound [Na].[Al] DNEHKUCSURWDGO-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000012496 blank sample Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000368 destabilizing effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000000176 sodium gluconate Substances 0.000 description 2
- 235000012207 sodium gluconate Nutrition 0.000 description 2
- 229940005574 sodium gluconate Drugs 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 239000005335 volcanic glass Substances 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- 241000282326 Felis catus Species 0.000 description 1
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- NEAPKZHDYMQZCB-UHFFFAOYSA-N N-[2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]ethyl]-2-oxo-3H-1,3-benzoxazole-6-carboxamide Chemical compound C1CN(CCN1CCNC(=O)C2=CC3=C(C=C2)NC(=O)O3)C4=CN=C(N=C4)NC5CC6=CC=CC=C6C5 NEAPKZHDYMQZCB-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 229910052656 albite Inorganic materials 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 description 1
- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910052849 andalusite Inorganic materials 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001649 dickite Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 229910052621 halloysite Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 229910052850 kyanite Inorganic materials 0.000 description 1
- 239000010443 kyanite Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052664 nepheline Inorganic materials 0.000 description 1
- 239000010434 nepheline Substances 0.000 description 1
- 239000005332 obsidian Substances 0.000 description 1
- 238000005580 one pot reaction Methods 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000012312 sodium hydride Substances 0.000 description 1
- 229910000104 sodium hydride Inorganic materials 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000007725 thermal activation Methods 0.000 description 1
Classifications
-
- 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
- C01B33/20—Silicates
- C01B33/26—Aluminium-containing silicates, i.e. silico-aluminates
- C01B33/28—Base exchange silicates, e.g. zeolites
- C01B33/2807—Zeolitic silicoaluminates with a tridimensional crystalline structure possessing molecular sieve properties; Isomorphous compounds wherein a part of the aluminium ore of the silicon present may be replaced by other elements such as gallium, germanium, phosphorus; Preparation of zeolitic molecular sieves from molecular sieves of another type or from preformed reacting mixtures
-
- 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
- Y10S423/00—Chemistry of inorganic compounds
- Y10S423/21—Faujasite, e.g. X, Y, CZS-3, ECR-4, Z-14HS, VHP-R
-
- 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
- Y10S423/00—Chemistry of inorganic compounds
- Y10S423/24—LTA, e.g. A, alpha, ZK-4, ZK-21, ZK-22
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762635357 DE2635357A1 (de) | 1976-08-06 | 1976-08-06 | Verfahren zur herstellung eisenarmer zeolithischer aluminiumsilikate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH633236A5 true CH633236A5 (de) | 1982-11-30 |
Family
ID=5984842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH964977A CH633236A5 (de) | 1976-08-06 | 1977-08-05 | Verfahren zur herstellung eisenarmer zeolithischer aluminiumsilikate aus eisenhaltigen mineralischen aluminiumsilikatrohstoffen. |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4089929A (enExample) |
| AT (1) | AT359044B (enExample) |
| BE (1) | BE857524A (enExample) |
| BR (1) | BR7705139A (enExample) |
| CH (1) | CH633236A5 (enExample) |
| DE (1) | DE2635357A1 (enExample) |
| ES (1) | ES461398A1 (enExample) |
| FR (1) | FR2360512A1 (enExample) |
| GB (1) | GB1580918A (enExample) |
| IT (1) | IT1085405B (enExample) |
| NL (1) | NL7707931A (enExample) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2727053C2 (de) * | 1977-06-15 | 1982-11-25 | Süd-Chemie AG, 8000 München | Adsorptiv wirkendes silikatisches Mittel zur Bindung von Erdalkali-Ionen |
| DE2728812A1 (de) * | 1977-06-27 | 1979-01-18 | Henkel Kgaa | Verwendung feinteiliger wasserunloeslicher alkalialuminiumsilikate zum waschen und reinigen von rohhaeuten und pelzfellen |
| DE2822072A1 (de) * | 1978-05-20 | 1979-11-29 | Henkel Kgaa | Verwendung wasserunloeslicher aluminiumsilikate bei der lederherstellung |
| EP0002899B1 (en) * | 1977-12-23 | 1983-03-16 | The British Petroleum Company p.l.c. | Method for preparing aluminosilicates and their use as catalyst supports and catalysts |
| EP0002900B1 (en) * | 1977-12-23 | 1982-11-24 | The British Petroleum Company p.l.c. | Method for producing aluminosilicates and their use as catalysts and supports |
| DE2852674A1 (de) * | 1978-12-06 | 1980-06-19 | Bayer Ag | Verfahren zur herstellung von zeolith a aus kaolin |
| DE3260889D1 (en) * | 1981-07-01 | 1984-11-08 | English Clays Lovering Pochin | Manufacture of zsm-zeolites |
| DE3203777A1 (de) * | 1982-02-04 | 1983-08-11 | Degussa Ag, 6000 Frankfurt | Verfahren zur kontinuierlichen umwandlung von metakaolin in feinstteiliges zeolithisches natriumaluminiumsilikat |
| GB2125390B (en) * | 1982-08-16 | 1985-12-24 | Ici Plc | Preparation of zeolites |
| IT1152546B (it) * | 1982-09-10 | 1987-01-07 | Ente Minerario Siciliano | Procedimento e impianto per la sintesi di zeoliti esenti da ferro |
| US4961836A (en) * | 1986-05-23 | 1990-10-09 | Exxon Research And Engineering Company | Synthesis of transition metal alumino-silicate IOZ-5 and use of it for hydrocarbon conversion |
| US5223235A (en) * | 1986-06-17 | 1993-06-29 | J. M. Huber Corporation | Synthetic alkali metal alumino-silicates compounds and their methods of preparation |
| US5164169A (en) * | 1991-06-14 | 1992-11-17 | Mobil Oil Corporation | Zeolite Beta |
| US5164170A (en) * | 1991-06-14 | 1992-11-17 | Mobil Oil Corporation | Synthesis of zeolite Beta |
| US20060140853A1 (en) | 2004-12-27 | 2006-06-29 | Council Of Scientific And Industrial Research | Process for preparing detergent builder zeolite-a from kimberlite tailings |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3114603A (en) * | 1960-01-15 | 1963-12-17 | Union Carbide Corp | Process for synthetic zeolite a |
| US3101251A (en) * | 1960-01-15 | 1963-08-20 | Union Carbide Corp | Process for producing molecular sieves |
| US3306922A (en) * | 1961-03-22 | 1967-02-28 | Union Carbide Corp | Molecular sieve adsorbents |
| US3390958A (en) * | 1964-10-19 | 1968-07-02 | Union Carbide Corp | Process for preparing crystalline zeolitic molecular sieves |
| US3515682A (en) * | 1968-12-06 | 1970-06-02 | Air Prod & Chem | Cracking catalyst manufacture |
| US3758539A (en) * | 1971-03-09 | 1973-09-11 | Air Prod & Chem | Offretite synthesis from minerals |
| US4034058A (en) * | 1976-06-29 | 1977-07-05 | Engelhard Minerals & Chemicals Corporation | Method for producing synthetic sodium aluminosilicate ion-exchange material from calcined kaolin clay |
-
1976
- 1976-08-06 DE DE19762635357 patent/DE2635357A1/de not_active Withdrawn
-
1977
- 1977-07-15 NL NL7707931A patent/NL7707931A/xx not_active Application Discontinuation
- 1977-07-28 US US05/819,666 patent/US4089929A/en not_active Expired - Lifetime
- 1977-08-04 GB GB32707/77A patent/GB1580918A/en not_active Expired
- 1977-08-04 FR FR7723988A patent/FR2360512A1/fr active Granted
- 1977-08-04 BR BR7705139A patent/BR7705139A/pt unknown
- 1977-08-05 BE BE179937A patent/BE857524A/xx not_active IP Right Cessation
- 1977-08-05 AT AT576877A patent/AT359044B/de not_active IP Right Cessation
- 1977-08-05 CH CH964977A patent/CH633236A5/de not_active IP Right Cessation
- 1977-08-05 ES ES461398A patent/ES461398A1/es not_active Expired
- 1977-08-05 IT IT26527/77A patent/IT1085405B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| GB1580918A (en) | 1980-12-10 |
| BE857524A (fr) | 1978-02-06 |
| FR2360512B1 (enExample) | 1981-04-30 |
| DE2635357A1 (de) | 1978-02-09 |
| US4089929A (en) | 1978-05-16 |
| BR7705139A (pt) | 1978-05-30 |
| NL7707931A (nl) | 1978-02-08 |
| IT1085405B (it) | 1985-05-28 |
| ATA576877A (de) | 1980-03-15 |
| AT359044B (de) | 1980-10-10 |
| ES461398A1 (es) | 1978-06-01 |
| FR2360512A1 (fr) | 1978-03-03 |
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