LU82412A1 - Ultrafiltrationsmembranen aus linearen polyurethanen - Google Patents
Ultrafiltrationsmembranen aus linearen polyurethanen Download PDFInfo
- Publication number
- LU82412A1 LU82412A1 LU82412A LU82412A LU82412A1 LU 82412 A1 LU82412 A1 LU 82412A1 LU 82412 A LU82412 A LU 82412A LU 82412 A LU82412 A LU 82412A LU 82412 A1 LU82412 A1 LU 82412A1
- Authority
- LU
- Luxembourg
- Prior art keywords
- ultrafiltration membrane
- water
- polyethylene glycol
- ultrafiltration
- membrane according
- Prior art date
Links
- 239000012528 membrane Substances 0.000 title claims description 96
- 238000000108 ultra-filtration Methods 0.000 title claims description 50
- 229920002635 polyurethane Polymers 0.000 title claims description 41
- 239000004814 polyurethane Substances 0.000 title claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 45
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 41
- 239000003921 oil Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 26
- 239000002202 Polyethylene glycol Substances 0.000 claims description 18
- 229920001223 polyethylene glycol Polymers 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 15
- 238000001556 precipitation Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 12
- 230000035699 permeability Effects 0.000 claims description 11
- 239000002904 solvent Substances 0.000 claims description 11
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims description 9
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims description 7
- 238000007654 immersion Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 125000005442 diisocyanate group Chemical group 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 150000005846 sugar alcohols Polymers 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 239000010730 cutting oil Substances 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000000376 reactant Substances 0.000 claims description 2
- 239000002569 water oil cream Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000839 emulsion Substances 0.000 description 9
- 229940113088 dimethylacetamide Drugs 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 235000013305 food Nutrition 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000002480 mineral oil Substances 0.000 description 3
- 235000010446 mineral oil Nutrition 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical compound C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000004970 Chain extender Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 241000765083 Ondina Species 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- RKZXQQPEDGMHBJ-LIGJGSPWSA-N [(2s,3r,4r,5r)-2,3,4,5,6-pentakis[[(z)-octadec-9-enoyl]oxy]hexyl] (z)-octadec-9-enoate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](OC(=O)CCCCCCC\C=C/CCCCCCCC)[C@@H](OC(=O)CCCCCCC\C=C/CCCCCCCC)[C@H](OC(=O)CCCCCCC\C=C/CCCCCCCC)[C@@H](OC(=O)CCCCCCC\C=C/CCCCCCCC)COC(=O)CCCCCCC\C=C/CCCCCCCC RKZXQQPEDGMHBJ-LIGJGSPWSA-N 0.000 description 1
- 150000007824 aliphatic compounds Chemical class 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- MXCPYJZDGPQDRA-UHFFFAOYSA-N dialuminum;2-acetyloxybenzoic acid;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3].CC(=O)OC1=CC=CC=C1C(O)=O MXCPYJZDGPQDRA-UHFFFAOYSA-N 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000010685 fatty oil Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000001631 haemodialysis Methods 0.000 description 1
- 230000000322 hemodialysis Effects 0.000 description 1
- 239000012456 homogeneous solution Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- XJRAOMZCVTUHFI-UHFFFAOYSA-N isocyanic acid;methane Chemical compound C.N=C=O.N=C=O XJRAOMZCVTUHFI-UHFFFAOYSA-N 0.000 description 1
- 239000002649 leather substitute Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000005373 pervaporation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004627 regenerated cellulose Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 235000013547 stew Nutrition 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 230000029305 taxis Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/08—Thickening liquid suspensions by filtration
- B01D17/085—Thickening liquid suspensions by filtration with membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/54—Polyureas; Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Polyurethanes Or Polyureas (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2918027 | 1979-05-04 | ||
| DE2918027A DE2918027C2 (de) | 1979-05-04 | 1979-05-04 | Ultrafiltrationsmembranen aus linearen Polyurethanen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU82412A1 true LU82412A1 (de) | 1980-07-31 |
Family
ID=6069940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU82412A LU82412A1 (de) | 1979-05-04 | 1980-04-29 | Ultrafiltrationsmembranen aus linearen polyurethanen |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US4332686A (enExample) |
| JP (1) | JPS5857203B2 (enExample) |
| AT (1) | AT379317B (enExample) |
| AU (1) | AU538518B2 (enExample) |
| BE (1) | BE883083A (enExample) |
| CA (1) | CA1150457A (enExample) |
| CH (1) | CH645816A5 (enExample) |
| DE (1) | DE2918027C2 (enExample) |
| ES (1) | ES8100897A1 (enExample) |
| FR (1) | FR2455475A1 (enExample) |
| GB (1) | GB2049544B (enExample) |
| IT (1) | IT1147053B (enExample) |
| LU (1) | LU82412A1 (enExample) |
| MX (1) | MX154033A (enExample) |
| NL (1) | NL8002466A (enExample) |
| ZA (1) | ZA802479B (enExample) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2087909B (en) * | 1980-11-22 | 1984-11-07 | Shirley Inst | Breathable non-porous polyurethane film |
| JPS583604A (ja) * | 1981-06-25 | 1983-01-10 | イ−・アイ・デユポン・デ・ニモアス・アンド・カンパニ− | 選択透過膜及びその製造方法 |
| DE3127464C2 (de) * | 1981-07-11 | 1986-10-30 | Akzo Gmbh, 5600 Wuppertal | Linear segmentierte Polyurethane und Verfahren zu deren Herstellung |
| JPS60225622A (ja) * | 1984-04-23 | 1985-11-09 | Agency Of Ind Science & Technol | 炭酸ガス選択透過膜 |
| DE3478088D1 (en) * | 1984-10-15 | 1989-06-15 | Shell Int Research | Process for producing dense membranes |
| US4787976A (en) * | 1985-04-29 | 1988-11-29 | W. R. Grace & Co. | Non-adsorptive, semipermeable filtration membrane |
| WO1987003503A1 (en) * | 1985-12-06 | 1987-06-18 | Memtec Limited | Treatment of emulsions |
| US4780211A (en) * | 1986-11-07 | 1988-10-25 | Desalination Systems, Inc. | Method of dewatering using PTFE membrane |
| US4797214A (en) * | 1987-07-07 | 1989-01-10 | Vincent Saputo | Method of treatment of waste streams of oil/water emulsions or solutions |
| DE3824359A1 (de) * | 1988-04-07 | 1989-10-19 | Bayer Ag | Verbundmembranen, verfahren zu ihrer herstellung und ihre verwendung |
| DE3916210A1 (de) * | 1989-05-18 | 1990-12-06 | Bayer Ag | Verbundmembranen, verfahren zu ihrer herstellung und ihre verwendung |
| US4946939A (en) * | 1989-05-30 | 1990-08-07 | The Dow Chemical Company | High purity polyether polyols |
| US5047495A (en) * | 1989-08-28 | 1991-09-10 | The G. F. Goodrich Company | Polyurethane for flexible fuel containers |
| US5574104A (en) * | 1990-01-05 | 1996-11-12 | The B. F. Goodrich Company | Chain extended low molecular weight polyoxiranes and electrostatic dissipating blend compositions based thereon |
| US5207917A (en) * | 1991-10-08 | 1993-05-04 | Weaver Thomas J M | Recycling and recovery of aqueous cleaner solutions |
| AU4033893A (en) * | 1992-04-24 | 1993-11-29 | Polymer Technology Group, Inc., The | Copolymers and non-porous, semi-permeable membrane thereof and its use for permeating molecules of predetermined molecular weight range |
| FR2692164B1 (fr) * | 1992-06-16 | 1994-11-10 | Elf Antar France | Procédé d'ultrafiltration d'émulsions stabilisées. |
| EP0590769B1 (en) * | 1992-09-30 | 1998-04-29 | Baker Hughes Incorporated | Method for removal of water soluble organics from oil process water |
| US5269934A (en) * | 1992-10-06 | 1993-12-14 | Chevron Research And Technology Company | Removal of oily residues from aqueous waste streams |
| AUPO251096A0 (en) | 1996-09-23 | 1996-10-17 | Cardiac Crc Nominees Pty Limited | Polysiloxane-containing polyurethane elastomeric compositions |
| US6294093B1 (en) * | 1998-09-04 | 2001-09-25 | Nalco/Exxon Energy Chemicals, L.P. | Aqueous dispersion of an oil soluble demulsifier for breaking crude oil emulsions |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE673744A (enExample) * | 1964-12-14 | |||
| FR1551885A (enExample) * | 1967-06-30 | 1969-01-03 | ||
| US3615024A (en) * | 1968-08-26 | 1971-10-26 | Amicon Corp | High flow membrane |
| DE2165073A1 (de) * | 1971-12-28 | 1973-07-12 | Sartorius Membranfilter Gmbh | Mehrschichten-filtermembrane, verfahren zu deren herstellung und deren verwendung |
| US3822238A (en) * | 1972-08-02 | 1974-07-02 | Princeton Polymer Lab | Hydrophilic polyurethane polymers |
| US3776970A (en) * | 1972-12-14 | 1973-12-04 | Monsanto Co | Process for the separation of styrene from ethylbenzene |
| DE2409789C3 (de) * | 1974-03-01 | 1981-08-20 | Akzo Gmbh, 5600 Wuppertal | Verfahren zur Herstellung von Polyurethanlösungen sowie deren Anwendung |
| FR2288477A1 (fr) * | 1974-10-22 | 1976-05-21 | Manche Union Coop Agr Laiti | Procede de production d'acide sialique et de glycoproteines a partir de lactoserum de fromagerie |
| DE2460835C2 (de) * | 1974-12-21 | 1982-11-18 | Chemie-Anlagenbau Bischofsheim GmbH, 4500 Osnabrück | Verfahren zur Herstellung von Filtermaterial |
| US4148734A (en) * | 1974-12-21 | 1979-04-10 | Chemie-Anlagenbau Bischofsheim Gmbh | Filter material and process for producing same |
| DE2627629C3 (de) * | 1976-06-19 | 1979-12-20 | Bayer Ag, 5090 Leverkusen | Verfahren zur Abtrennung von aromatischen* Kohlenwasserstoffen aus Gemischen mit anderen organischen Verbindungen mit Hilfe von Kunststoffmembranen |
-
1979
- 1979-05-04 DE DE2918027A patent/DE2918027C2/de not_active Expired
-
1980
- 1980-04-14 CH CH283780A patent/CH645816A5/de not_active IP Right Cessation
- 1980-04-23 MX MX182073A patent/MX154033A/es unknown
- 1980-04-24 ZA ZA00802479A patent/ZA802479B/xx unknown
- 1980-04-24 AU AU57776/80A patent/AU538518B2/en not_active Ceased
- 1980-04-24 AT AT0222380A patent/AT379317B/de not_active IP Right Cessation
- 1980-04-25 GB GB8013832A patent/GB2049544B/en not_active Expired
- 1980-04-28 FR FR8009523A patent/FR2455475A1/fr active Granted
- 1980-04-28 NL NL8002466A patent/NL8002466A/nl not_active Application Discontinuation
- 1980-04-28 IT IT48528/80A patent/IT1147053B/it active
- 1980-04-29 LU LU82412A patent/LU82412A1/de unknown
- 1980-04-30 CA CA000350976A patent/CA1150457A/en not_active Expired
- 1980-04-30 US US06/145,767 patent/US4332686A/en not_active Expired - Lifetime
- 1980-05-02 ES ES491125A patent/ES8100897A1/es not_active Expired
- 1980-05-02 BE BE0/200443A patent/BE883083A/fr not_active IP Right Cessation
- 1980-05-06 JP JP55059844A patent/JPS5857203B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US4332686A (en) | 1982-06-01 |
| CA1150457A (en) | 1983-07-26 |
| NL8002466A (nl) | 1980-11-06 |
| JPS55149613A (en) | 1980-11-21 |
| ES491125A0 (es) | 1980-12-01 |
| JPS5857203B2 (ja) | 1983-12-19 |
| IT8048528A0 (it) | 1980-04-28 |
| AU538518B2 (en) | 1984-08-16 |
| CH645816A5 (de) | 1984-10-31 |
| ATA222380A (de) | 1985-05-15 |
| IT1147053B (it) | 1986-11-19 |
| GB2049544B (en) | 1982-11-24 |
| AU5777680A (en) | 1980-11-06 |
| FR2455475A1 (fr) | 1980-11-28 |
| ES8100897A1 (es) | 1980-12-01 |
| DE2918027C2 (de) | 1986-05-28 |
| FR2455475B1 (enExample) | 1984-04-13 |
| MX154033A (es) | 1987-04-08 |
| DE2918027A1 (de) | 1980-11-13 |
| BE883083A (fr) | 1980-09-01 |
| GB2049544A (en) | 1980-12-31 |
| AT379317B (de) | 1985-12-27 |
| ZA802479B (en) | 1981-04-29 |
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