DE2433409A1 - Poroese anionenaustauscher - Google Patents
Poroese anionenaustauscherInfo
- Publication number
- DE2433409A1 DE2433409A1 DE2433409A DE2433409A DE2433409A1 DE 2433409 A1 DE2433409 A1 DE 2433409A1 DE 2433409 A DE2433409 A DE 2433409A DE 2433409 A DE2433409 A DE 2433409A DE 2433409 A1 DE2433409 A1 DE 2433409A1
- Authority
- DE
- Germany
- Prior art keywords
- organic
- groups
- porous
- carrier
- substituents
- 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.)
- Pending
Links
- 150000001450 anions Chemical class 0.000 title claims description 5
- 125000000962 organic group Chemical group 0.000 claims description 17
- 239000011148 porous material Substances 0.000 claims description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 12
- 229910000077 silane Inorganic materials 0.000 claims description 11
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 10
- 239000011707 mineral Substances 0.000 claims description 10
- 125000001424 substituent group Chemical group 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 5
- 125000003545 alkoxy group Chemical group 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000002243 precursor Substances 0.000 claims description 2
- 125000003277 amino group Chemical group 0.000 claims 2
- 238000005349 anion exchange Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 125000004433 nitrogen atom Chemical group N* 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 20
- 150000002500 ions Chemical class 0.000 description 15
- 150000001412 amines Chemical group 0.000 description 12
- 239000000969 carrier Substances 0.000 description 8
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 5
- 239000012876 carrier material Substances 0.000 description 5
- 150000004756 silanes Chemical class 0.000 description 5
- 239000000741 silica gel Substances 0.000 description 5
- 229910002027 silica gel Inorganic materials 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000008096 xylene Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 125000005843 halogen group Chemical group 0.000 description 2
- 239000000017 hydrogel Substances 0.000 description 2
- 238000010335 hydrothermal treatment Methods 0.000 description 2
- 150000004679 hydroxides Chemical class 0.000 description 2
- 239000012705 liquid precursor Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000005046 Chlorosilane Substances 0.000 description 1
- 229920002307 Dextran Polymers 0.000 description 1
- 240000002989 Euphorbia neriifolia Species 0.000 description 1
- 206010061217 Infestation Diseases 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910003849 O-Si Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910003872 O—Si Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229910001410 inorganic ion Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- OOXSLJBUMMHDKW-UHFFFAOYSA-N trichloro(3-chloropropyl)silane Chemical compound ClCCC[Si](Cl)(Cl)Cl OOXSLJBUMMHDKW-UHFFFAOYSA-N 0.000 description 1
- GQIUQDDJKHLHTB-UHFFFAOYSA-N trichloro(ethenyl)silane Chemical compound Cl[Si](Cl)(Cl)C=C GQIUQDDJKHLHTB-UHFFFAOYSA-N 0.000 description 1
- 239000005050 vinyl trichlorosilane Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J41/00—Anion exchange; Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
- B01J41/08—Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
- B01J41/09—Organic material
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31652—Of asbestos
- Y10T428/31663—As siloxane, silicone or silane
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7325698A FR2236552B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1973-07-13 | 1973-07-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2433409A1 true DE2433409A1 (de) | 1975-02-06 |
Family
ID=9122513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2433409A Pending DE2433409A1 (de) | 1973-07-13 | 1974-07-11 | Poroese anionenaustauscher |
Country Status (10)
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0065643A1 (de) * | 1981-05-21 | 1982-12-01 | Degussa Aktiengesellschaft | Polymere Ammoniumverbindungen mit kieselsäureartigem Grundgerüst, ihre Herstellung und Verwendung |
| DE3800564C1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1988-01-12 | 1989-03-16 | Degussa Ag, 6000 Frankfurt, De | |
| DE3837415A1 (de) * | 1988-11-04 | 1990-05-10 | Degussa | Organopolysiloxan-harnstoff- und organopolysiloxan-thioharnstoff-derivate, verfahren zu ihrer herstellung und verwendung |
| DE3925358A1 (de) * | 1989-07-31 | 1991-02-07 | Degussa | Aminoalkylsubstituierte organopolysiloxan-thioharnstoff-derivate, verfahren zu ihrer herstellung und verwendung |
| DE4110705C1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1991-04-03 | 1992-10-22 | Degussa Ag, 6000 Frankfurt, De | |
| WO1997010177A1 (de) * | 1995-09-15 | 1997-03-20 | Hoechst Research & Technology Deutschland Gmbh & Co. Kg | Verfahren zur herstellung organofunktionalisierter aerogele |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2283101A1 (fr) * | 1974-08-30 | 1976-03-26 | Rhone Poulenc Ind | Supports mineraux modifies |
| FR2305999A1 (fr) * | 1975-04-04 | 1976-10-29 | Rhone Poulenc Ind | Supports mineraux greffes et modifies |
| US4100149A (en) * | 1975-08-28 | 1978-07-11 | Rhone-Poulenc Industries | Method of separating proteins by ion exchange |
| US4216125A (en) * | 1978-12-07 | 1980-08-05 | Pq Corporation | Detergent compositions with silane-zeolite silicate builder |
| US4333847A (en) * | 1979-04-30 | 1982-06-08 | P. B. Macedo | Fixation by anion exchange of toxic materials in a glass matrix |
| US4544499A (en) * | 1979-08-10 | 1985-10-01 | Pedro B. Macedo | Fixation by anion exchange of toxic materials in a glass matrix |
| FR2470800A1 (fr) * | 1979-11-29 | 1981-06-12 | Rhone Poulenc Ind | Procede d'epuration des jus de betteraves au moyen d'echangeurs d'ions |
| US4243545A (en) * | 1979-12-10 | 1981-01-06 | Pq Corporation | Detergent compositions with silane-zeolite silicate builder |
| US4659477A (en) * | 1982-08-16 | 1987-04-21 | Pedro B. Macedo | Fixation of anionic materials with a complexing agent |
| US4560704A (en) * | 1982-11-12 | 1985-12-24 | Purdue Research Foundation | Polyamine based bonded phase chromatography |
| US20040152085A1 (en) * | 2003-02-04 | 2004-08-05 | Veridian Systems Division | Surface for collection and/or purification of nucleic acids |
| US7223851B2 (en) * | 2003-02-06 | 2007-05-29 | General Dynamics Advanced Information Systems, Inc. | Nucleic acid-binding polymers |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA519230A (en) * | 1955-12-06 | Minnesota Mining And Manufacturing Company | Hydrophobic surface treated inorganic particles and materials | |
| US2968616A (en) * | 1955-11-17 | 1961-01-17 | Pure Oil Co | Method of inhibiting scale formation by non-hydrolyzing organopolysiloxane |
| GB956276A (en) * | 1960-07-06 | 1964-04-22 | Wolfen Filmfab Veb | Process for the manufacture of thermostable organo silicon anion exchangers |
| US3810843A (en) * | 1971-05-28 | 1974-05-14 | Gen Electric | Silicone-silica compositions |
-
1973
- 1973-07-13 FR FR7325698A patent/FR2236552B1/fr not_active Expired
-
1974
- 1974-07-10 SE SE7409088A patent/SE7409088L/ not_active Application Discontinuation
- 1974-07-10 US US05/486,819 patent/US3969261A/en not_active Expired - Lifetime
- 1974-07-11 IT IT52053/74A patent/IT1016387B/it active
- 1974-07-11 DK DK372374A patent/DK372374A/da unknown
- 1974-07-11 DE DE2433409A patent/DE2433409A1/de active Pending
- 1974-07-11 LU LU70505A patent/LU70505A1/xx unknown
- 1974-07-11 NL NL7409371A patent/NL7409371A/xx unknown
- 1974-07-12 JP JP8009874A patent/JPS532630B2/ja not_active Expired
- 1974-07-12 BE BE146543A patent/BE817632A/xx unknown
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0065643A1 (de) * | 1981-05-21 | 1982-12-01 | Degussa Aktiengesellschaft | Polymere Ammoniumverbindungen mit kieselsäureartigem Grundgerüst, ihre Herstellung und Verwendung |
| DE3800564C1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1988-01-12 | 1989-03-16 | Degussa Ag, 6000 Frankfurt, De | |
| EP0327796A3 (de) * | 1988-01-12 | 1991-01-30 | Degussa Aktiengesellschaft | Geformte polymere Organosiloxan-Ammoniumverbindungen, Verfahren zu ihrer Herstellung und Verwendung |
| US5130396A (en) * | 1988-01-12 | 1992-07-14 | Degussa Aktiengesellschaft | Formed, polymeric organosiloxane ammonium compounds, method of their preparation and use |
| US5239033A (en) * | 1988-01-12 | 1993-08-24 | Degussa Aktiengesellschaft | Formed, polymeric organosiloxane ammonium compounds, method of their preparation and use |
| DE3837415A1 (de) * | 1988-11-04 | 1990-05-10 | Degussa | Organopolysiloxan-harnstoff- und organopolysiloxan-thioharnstoff-derivate, verfahren zu ihrer herstellung und verwendung |
| DE3925358A1 (de) * | 1989-07-31 | 1991-02-07 | Degussa | Aminoalkylsubstituierte organopolysiloxan-thioharnstoff-derivate, verfahren zu ihrer herstellung und verwendung |
| DE4110705C1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1991-04-03 | 1992-10-22 | Degussa Ag, 6000 Frankfurt, De | |
| US5352791A (en) * | 1991-04-03 | 1994-10-04 | Degussa Aktiengesellschaft | Hydrating or oxidizing process using a metal-containing, shaped organosiloxane amine copolycondensate catalyst |
| WO1997010177A1 (de) * | 1995-09-15 | 1997-03-20 | Hoechst Research & Technology Deutschland Gmbh & Co. Kg | Verfahren zur herstellung organofunktionalisierter aerogele |
| US6191173B1 (en) | 1995-09-15 | 2001-02-20 | Hoechst Research Technology Deutschland Gmbh | Process for the production of organofunctionalized aerogels |
Also Published As
| Publication number | Publication date |
|---|---|
| LU70505A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1975-03-27 |
| SE7409088L (sv) | 1975-01-14 |
| DK372374A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1975-03-03 |
| FR2236552B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1977-05-06 |
| JPS5033987A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1975-04-02 |
| FR2236552A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1975-02-07 |
| BE817632A (fr) | 1975-01-13 |
| JPS532630B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1978-01-30 |
| US3969261A (en) | 1976-07-13 |
| IT1016387B (it) | 1977-05-30 |
| NL7409371A (nl) | 1975-01-15 |
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