DE2356865C2 - Wasserhaltiges Magnesiumsilikat und Verfahren zu seiner Herstellung - Google Patents
Wasserhaltiges Magnesiumsilikat und Verfahren zu seiner HerstellungInfo
- Publication number
- DE2356865C2 DE2356865C2 DE2356865A DE2356865A DE2356865C2 DE 2356865 C2 DE2356865 C2 DE 2356865C2 DE 2356865 A DE2356865 A DE 2356865A DE 2356865 A DE2356865 A DE 2356865A DE 2356865 C2 DE2356865 C2 DE 2356865C2
- Authority
- DE
- Germany
- Prior art keywords
- water
- magnesium
- compound
- sodium
- suspension
- 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
- 238000000034 method Methods 0.000 title description 30
- 239000000391 magnesium silicate Substances 0.000 title description 8
- 235000019792 magnesium silicate Nutrition 0.000 title description 7
- 229910052919 magnesium silicate Inorganic materials 0.000 title description 7
- 238000002360 preparation method Methods 0.000 title description 3
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 title 1
- 239000013078 crystal Substances 0.000 claims description 18
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 46
- 239000000243 solution Substances 0.000 description 37
- 150000002681 magnesium compounds Chemical class 0.000 description 32
- 239000000047 product Substances 0.000 description 32
- 230000003287 optical effect Effects 0.000 description 27
- 239000011734 sodium Substances 0.000 description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 27
- 239000000725 suspension Substances 0.000 description 24
- 229910001629 magnesium chloride Inorganic materials 0.000 description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 22
- 239000012736 aqueous medium Substances 0.000 description 20
- 238000001556 precipitation Methods 0.000 description 20
- 239000006185 dispersion Substances 0.000 description 18
- 239000002244 precipitate Substances 0.000 description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000011777 magnesium Substances 0.000 description 13
- 150000003388 sodium compounds Chemical class 0.000 description 13
- 239000000377 silicon dioxide Substances 0.000 description 12
- 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 11
- 239000000499 gel Substances 0.000 description 11
- 238000010335 hydrothermal treatment Methods 0.000 description 11
- 229910052708 sodium Inorganic materials 0.000 description 11
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 10
- 238000003756 stirring Methods 0.000 description 10
- 125000004429 atom Chemical group 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 8
- IJKVHSBPTUYDLN-UHFFFAOYSA-N dihydroxy(oxo)silane Chemical compound O[Si](O)=O IJKVHSBPTUYDLN-UHFFFAOYSA-N 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 8
- 150000002642 lithium compounds Chemical class 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000007900 aqueous suspension Substances 0.000 description 6
- 238000009835 boiling Methods 0.000 description 6
- 150000001768 cations Chemical class 0.000 description 6
- 239000002178 crystalline material Substances 0.000 description 6
- FSBVERYRVPGNGG-UHFFFAOYSA-N dimagnesium dioxido-bis[[oxido(oxo)silyl]oxy]silane hydrate Chemical compound O.[Mg+2].[Mg+2].[O-][Si](=O)O[Si]([O-])([O-])O[Si]([O-])=O FSBVERYRVPGNGG-UHFFFAOYSA-N 0.000 description 6
- 229910052749 magnesium Inorganic materials 0.000 description 6
- 235000012239 silicon dioxide Nutrition 0.000 description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 5
- 238000005341 cation exchange Methods 0.000 description 5
- 239000012153 distilled water Substances 0.000 description 5
- 229910000029 sodium carbonate Inorganic materials 0.000 description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000004115 Sodium Silicate Substances 0.000 description 4
- 239000012670 alkaline solution Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- -1 silica compound Chemical class 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 229910052911 sodium silicate Inorganic materials 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 241001233037 catfish Species 0.000 description 3
- 238000010411 cooking Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 239000002734 clay mineral Substances 0.000 description 2
- 238000000975 co-precipitation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 150000002222 fluorine compounds Chemical class 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 159000000003 magnesium salts Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002609 medium 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
- 230000035699 permeability Effects 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000000518 rheometry Methods 0.000 description 2
- 125000004436 sodium atom Chemical group 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 241001477005 Aseraggodes kaianus Species 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 241000013355 Mycteroperca interstitialis Species 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000001246 colloidal dispersion Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001595 flow curve Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000011005 laboratory method Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 235000012243 magnesium silicates Nutrition 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000000424 optical density measurement Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004078 waterproofing 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
- C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
- C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
- C01B33/40—Clays
- C01B33/405—Clays not containing aluminium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5241672A GB1432770A (en) | 1972-11-14 | 1972-11-14 | Production of magnesium silicates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2356865A1 DE2356865A1 (de) | 1974-05-22 |
| DE2356865C2 true DE2356865C2 (de) | 1984-12-06 |
Family
ID=10463840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2356865A Expired DE2356865C2 (de) | 1972-11-14 | 1973-11-14 | Wasserhaltiges Magnesiumsilikat und Verfahren zu seiner Herstellung |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS5648443B2 (en]) |
| AR (1) | AR199502A1 (en]) |
| AT (1) | AT353227B (en]) |
| BE (1) | BE807265A (en]) |
| CA (1) | CA1006332A (en]) |
| CH (1) | CH598136A5 (en]) |
| DE (1) | DE2356865C2 (en]) |
| DK (1) | DK138111B (en]) |
| ES (1) | ES420483A1 (en]) |
| FR (1) | FR2206272B1 (en]) |
| GB (1) | GB1432770A (en]) |
| IT (1) | IT997906B (en]) |
| NL (1) | NL177996C (en]) |
| NO (1) | NO138059C (en]) |
| SE (1) | SE390630B (en]) |
| ZA (1) | ZA738402B (en]) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991017953A1 (de) * | 1990-05-17 | 1991-11-28 | Henkel Kommanditgesellschaft Auf Aktien | Vereinfachtes verfahren zur herstellung von quellfähigen schichtsilikaten |
| EP0889003A1 (de) | 1997-07-01 | 1999-01-07 | Clariant GmbH | Synthetisches Magnesiumsilikat |
| DE102024121958A1 (de) | 2023-08-11 | 2025-02-13 | Devinochem GmbH & Co.KG | Schichtsilikat, Verfahren zu dessen Herstellung und dessen Verwendung |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3207886A1 (de) * | 1982-03-05 | 1983-09-15 | Hoechst Ag, 6230 Frankfurt | Verfahren zur herstellung eines synthetischen hectorits |
| DE3526405A1 (de) * | 1985-07-24 | 1987-02-05 | Henkel Kgaa | Schichtsilikate mit beschraenktem quellvermoegen, verfahren zu ihrer herstellung und ihre verwendung in wasch- und reinigungsmitteln |
| GB9108771D0 (en) * | 1991-04-24 | 1991-06-12 | Laporte Industries Ltd | Pillared clays |
| US6271298B1 (en) | 1999-04-28 | 2001-08-07 | Southern Clay Products, Inc. | Process for treating smectite clays to facilitate exfoliation |
| US6849680B2 (en) | 2001-03-02 | 2005-02-01 | Southern Clay Products, Inc. | Preparation of polymer nanocomposites by dispersion destabilization |
| WO2003018477A1 (en) | 2001-08-24 | 2003-03-06 | Southern Clay Products, Inc. | Methods for making synthetic smectites |
| GB0214355D0 (en) * | 2002-06-21 | 2002-07-31 | Rockwood Additives Ltd | Synthetic magnesium silicate compositions and process for the production thereof |
| GB0229630D0 (en) * | 2002-12-20 | 2003-01-22 | Rockwood Additives Ltd | Process for the production of synthetic magnesium silicate compositions |
| GB2401103A (en) * | 2003-04-29 | 2004-11-03 | Rockwood Additives Ltd | Synthetic magnesium silicate compositions, methods and uses |
| FR2903680B1 (fr) * | 2006-07-17 | 2008-10-31 | Luzenac Europ Sas Soc Par Acti | Procede de preparation de compositions talqueuses comprenant des particules minerales silico/germano-metalliques synthetiques. |
| JP6485360B2 (ja) | 2013-12-24 | 2019-03-20 | 三菱瓦斯化学株式会社 | メタクリル酸メチル製造用触媒及びメタクリル酸メチルの製造方法 |
| KR102070379B1 (ko) * | 2016-11-14 | 2020-01-29 | 주식회사 엘지화학 | 합성-헥토라이트의 저온 상압 제조방법 |
| KR102070380B1 (ko) * | 2016-11-14 | 2020-01-29 | 주식회사 엘지화학 | 합성-헥토라이트의 저온 상압 제조방법 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1213122A (en) * | 1966-09-12 | 1970-11-18 | Laporte Industries Ltd | Clays |
-
1972
- 1972-11-14 GB GB5241672A patent/GB1432770A/en not_active Expired
-
1973
- 1973-10-30 ZA ZA738402*A patent/ZA738402B/xx unknown
- 1973-11-01 CA CA184,825A patent/CA1006332A/en not_active Expired
- 1973-11-12 AR AR250952A patent/AR199502A1/es active
- 1973-11-12 IT IT53634/73A patent/IT997906B/it active
- 1973-11-12 NO NO4340/73A patent/NO138059C/no unknown
- 1973-11-13 BE BE137702A patent/BE807265A/xx not_active IP Right Cessation
- 1973-11-13 JP JP12761773A patent/JPS5648443B2/ja not_active Expired
- 1973-11-13 SE SE7315375A patent/SE390630B/xx unknown
- 1973-11-13 DK DK611673AA patent/DK138111B/da not_active IP Right Cessation
- 1973-11-13 CH CH1590373A patent/CH598136A5/xx not_active IP Right Cessation
- 1973-11-13 ES ES420483A patent/ES420483A1/es not_active Expired
- 1973-11-13 NL NLAANVRAGE7315510,A patent/NL177996C/xx not_active IP Right Cessation
- 1973-11-14 FR FR7340548A patent/FR2206272B1/fr not_active Expired
- 1973-11-14 DE DE2356865A patent/DE2356865C2/de not_active Expired
- 1973-11-14 AT AT959773A patent/AT353227B/de not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991017953A1 (de) * | 1990-05-17 | 1991-11-28 | Henkel Kommanditgesellschaft Auf Aktien | Vereinfachtes verfahren zur herstellung von quellfähigen schichtsilikaten |
| EP0889003A1 (de) | 1997-07-01 | 1999-01-07 | Clariant GmbH | Synthetisches Magnesiumsilikat |
| US6274111B1 (en) | 1997-07-01 | 2001-08-14 | Clariant Gmbh | Synthetic magnesium silicate |
| DE102024121958A1 (de) | 2023-08-11 | 2025-02-13 | Devinochem GmbH & Co.KG | Schichtsilikat, Verfahren zu dessen Herstellung und dessen Verwendung |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2206272B1 (en]) | 1980-10-03 |
| CH598136A5 (en]) | 1978-04-28 |
| AT353227B (de) | 1979-11-12 |
| JPS5648443B2 (en]) | 1981-11-16 |
| AU6228573A (en) | 1975-05-08 |
| ES420483A1 (es) | 1976-04-01 |
| ATA959773A (de) | 1979-04-15 |
| IT997906B (it) | 1975-12-30 |
| FR2206272A1 (en]) | 1974-06-07 |
| BE807265A (fr) | 1974-05-13 |
| NO138059C (no) | 1978-06-21 |
| JPS49135897A (en]) | 1974-12-27 |
| DK138111B (da) | 1978-07-17 |
| NO138059B (no) | 1978-03-13 |
| CA1006332A (en) | 1977-03-08 |
| DK138111C (en]) | 1978-12-27 |
| GB1432770A (en) | 1976-04-22 |
| DE2356865A1 (de) | 1974-05-22 |
| NL177996C (nl) | 1986-01-02 |
| ZA738402B (en) | 1974-09-25 |
| SE390630B (sv) | 1977-01-03 |
| NL177996B (nl) | 1985-08-01 |
| NL7315510A (en]) | 1974-05-16 |
| AR199502A1 (es) | 1974-09-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| 8125 | Change of the main classification |
Ipc: C01B 33/22 |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8328 | Change in the person/name/address of the agent |
Free format text: SCHWABE, H., DIPL.-ING. SANDMAIR, K., DIPL.-CHEM. DR.JUR. DR.RER.NAT., PAT.-ANW., 8000 MUENCHEN |