SE448538B - Forfarande for framstellning av bis-(n,n-dialkylamino)alkyletrar - Google Patents
Forfarande for framstellning av bis-(n,n-dialkylamino)alkyletrarInfo
- Publication number
- SE448538B SE448538B SE7904581A SE7904581A SE448538B SE 448538 B SE448538 B SE 448538B SE 7904581 A SE7904581 A SE 7904581A SE 7904581 A SE7904581 A SE 7904581A SE 448538 B SE448538 B SE 448538B
- Authority
- SE
- Sweden
- Prior art keywords
- sodium
- dialkylaminoalkoxide
- bis
- dimethylamino
- dialkylaminoalkanol
- Prior art date
Links
- 229910052757 nitrogen Inorganic materials 0.000 title claims description 114
- 238000000034 method Methods 0.000 title claims description 46
- 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 claims description 65
- 229910052708 sodium Inorganic materials 0.000 claims description 64
- 239000011734 sodium Substances 0.000 claims description 64
- 239000000203 mixture Substances 0.000 claims description 40
- 239000003085 diluting agent Substances 0.000 claims description 33
- 230000008569 process Effects 0.000 claims description 26
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 22
- 150000005215 alkyl ethers Chemical class 0.000 claims description 21
- 239000002270 dispersing agent Substances 0.000 claims description 21
- 238000002360 preparation method Methods 0.000 claims description 18
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 17
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 17
- 229910052700 potassium Inorganic materials 0.000 claims description 17
- 239000011591 potassium Substances 0.000 claims description 17
- -1 beta (N, N-dimethylamino) ethyl Chemical group 0.000 claims description 8
- 239000007806 chemical reaction intermediate Substances 0.000 claims description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 6
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 229930195733 hydrocarbon Natural products 0.000 claims description 5
- 150000002430 hydrocarbons Chemical class 0.000 claims description 5
- 125000002947 alkylene group Chemical group 0.000 claims description 4
- 150000002170 ethers Chemical class 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N 1-propanol Substances CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 2
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims 2
- BFSVOASYOCHEOV-UHFFFAOYSA-N 2-diethylaminoethanol Chemical compound CCN(CC)CCO BFSVOASYOCHEOV-UHFFFAOYSA-N 0.000 claims 1
- KFZMGEQAYNKOFK-UHFFFAOYSA-N 2-propanol Substances CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims 1
- OPKOKAMJFNKNAS-UHFFFAOYSA-N N-methylethanolamine Chemical compound CNCCO OPKOKAMJFNKNAS-UHFFFAOYSA-N 0.000 claims 1
- 125000000031 ethylamino group Chemical group [H]C([H])([H])C([H])([H])N([H])[*] 0.000 claims 1
- ZEQWRUGWKKGOAW-UHFFFAOYSA-N sodium;1-(dimethylamino)ethanolate Chemical compound [Na+].CC([O-])N(C)C ZEQWRUGWKKGOAW-UHFFFAOYSA-N 0.000 claims 1
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 60
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 25
- 238000006243 chemical reaction Methods 0.000 description 21
- 239000011541 reaction mixture Substances 0.000 description 11
- 238000003756 stirring Methods 0.000 description 11
- 239000000047 product Substances 0.000 description 10
- 239000000376 reactant Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 8
- 238000009835 boiling Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 239000012258 stirred mixture Substances 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 6
- 150000004703 alkoxides Chemical class 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010926 purge Methods 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000004821 distillation Methods 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- YSKPDPSMMRKCND-UHFFFAOYSA-N sodium;2-(dimethylamino)ethanolate Chemical compound [Na+].CN(C)CC[O-] YSKPDPSMMRKCND-UHFFFAOYSA-N 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- GTEXIOINCJRBIO-UHFFFAOYSA-N 2-[2-(dimethylamino)ethoxy]-n,n-dimethylethanamine Chemical compound CN(C)CCOCCN(C)C GTEXIOINCJRBIO-UHFFFAOYSA-N 0.000 description 3
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 3
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 238000006959 Williamson synthesis reaction Methods 0.000 description 2
- WYVFVMUROJPJSS-UHFFFAOYSA-N [2-(dimethylamino)ethoxy]sulfonic acid Chemical compound CN(C)CCOS(O)(=O)=O WYVFVMUROJPJSS-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- QKIUAMUSENSFQQ-UHFFFAOYSA-N dimethylazanide Chemical compound C[N-]C QKIUAMUSENSFQQ-UHFFFAOYSA-N 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- NVIIFFZOTKEMRZ-UHFFFAOYSA-N potassium;2-(dimethylamino)ethanolate Chemical compound [K+].CN(C)CC[O-] NVIIFFZOTKEMRZ-UHFFFAOYSA-N 0.000 description 2
- BGHCVCJVXZWKCC-UHFFFAOYSA-N tetradecane Chemical compound CCCCCCCCCCCCCC BGHCVCJVXZWKCC-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- SUZOCIFIGKCISE-UHFFFAOYSA-N 1-(dimethylamino)propan-1-ol Chemical compound CCC(O)N(C)C SUZOCIFIGKCISE-UHFFFAOYSA-N 0.000 description 1
- MELCWEWUZODSIS-UHFFFAOYSA-N 2-[2-(diethylamino)ethoxy]-n,n-diethylethanamine Chemical compound CCN(CC)CCOCCN(CC)CC MELCWEWUZODSIS-UHFFFAOYSA-N 0.000 description 1
- JEPPSKFPXMMAGP-UHFFFAOYSA-N 2-[2-(diethylamino)propan-2-yloxy]-N,N-diethylpropan-2-amine Chemical compound CCN(CC)C(C)(C)OC(C)(C)N(CC)CC JEPPSKFPXMMAGP-UHFFFAOYSA-N 0.000 description 1
- OZJDHCIBYHRBHO-UHFFFAOYSA-N 2-[2-(dimethylamino)propan-2-yloxy]-n,n-dimethylpropan-2-amine Chemical compound CN(C)C(C)(C)OC(C)(C)N(C)C OZJDHCIBYHRBHO-UHFFFAOYSA-N 0.000 description 1
- WQMAANNAZKNUDL-UHFFFAOYSA-N 2-dimethylaminoethyl chloride Chemical compound CN(C)CCCl WQMAANNAZKNUDL-UHFFFAOYSA-N 0.000 description 1
- SDCDJJFJEKYTMT-UHFFFAOYSA-N CNC.[K] Chemical compound CNC.[K] SDCDJJFJEKYTMT-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 1
- KIWBPDUYBMNFTB-UHFFFAOYSA-N Ethyl hydrogen sulfate Chemical compound CCOS(O)(=O)=O KIWBPDUYBMNFTB-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 150000001348 alkyl chlorides Chemical class 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 description 1
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- WSYUEVRAMDSJKL-UHFFFAOYSA-N ethanolamine-o-sulfate Chemical compound NCCOS(O)(=O)=O WSYUEVRAMDSJKL-UHFFFAOYSA-N 0.000 description 1
- HHFAWKCIHAUFRX-UHFFFAOYSA-N ethoxide Chemical compound CC[O-] HHFAWKCIHAUFRX-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- YCOZIPAWZNQLMR-UHFFFAOYSA-N heptane - octane Natural products CCCCCCCCCCCCCCC YCOZIPAWZNQLMR-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003701 inert diluent Substances 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 125000000250 methylamino group Chemical group [H]N(*)C([H])([H])[H] 0.000 description 1
- BDGIOFKLQPUORK-UHFFFAOYSA-N n-ethoxy-n-ethylethanamine Chemical compound CCON(CC)CC BDGIOFKLQPUORK-UHFFFAOYSA-N 0.000 description 1
- BEVFRYJEBIXQLT-UHFFFAOYSA-N n-ethyl-n-propoxyethanamine Chemical compound CCCON(CC)CC BEVFRYJEBIXQLT-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 150000003109 potassium Chemical class 0.000 description 1
- HVFQFDANOBZEGL-UHFFFAOYSA-N potassium;dimethylazanide Chemical compound [K+].C[N-]C HVFQFDANOBZEGL-UHFFFAOYSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011027 product recovery Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 150000003388 sodium compounds Chemical class 0.000 description 1
- 239000012312 sodium hydride Substances 0.000 description 1
- 229910000104 sodium hydride Inorganic materials 0.000 description 1
- DERHCNHUULQWAW-UHFFFAOYSA-M sodium;2-(dimethylamino)ethyl sulfate Chemical compound [Na+].CN(C)CCOS([O-])(=O)=O DERHCNHUULQWAW-UHFFFAOYSA-M 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000007039 two-step reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
- C07D295/04—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
- C07D295/08—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms
- C07D295/084—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms with the ring nitrogen atoms and the oxygen or sulfur atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings
- C07D295/088—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by singly bound oxygen or sulfur atoms with the ring nitrogen atoms and the oxygen or sulfur atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings to an acyclic saturated chain
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US2565979A | 1979-03-30 | 1979-03-30 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE7904581L SE7904581L (sv) | 1980-10-01 |
| SE447375B SE447375B (sv) | 1986-11-10 |
| SE448538B true SE448538B (sv) | 1987-03-02 |
Family
ID=21827342
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7904581A SE448538B (sv) | 1979-03-30 | 1979-05-25 | Forfarande for framstellning av bis-(n,n-dialkylamino)alkyletrar |
| SE8604745A SE463367B (sv) | 1979-03-30 | 1986-11-05 | Foerfarande foer framstaellning av bis-(n,n-dialkylamino)alkyletrar |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8604745A SE463367B (sv) | 1979-03-30 | 1986-11-05 | Foerfarande foer framstaellning av bis-(n,n-dialkylamino)alkyletrar |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS55130943A (it) |
| DE (1) | DE2921972A1 (it) |
| FR (1) | FR2452477A1 (it) |
| GB (1) | GB2045237B (it) |
| IT (1) | IT1196398B (it) |
| NL (1) | NL7904648A (it) |
| SE (2) | SE448538B (it) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5970650A (ja) * | 1982-10-18 | 1984-04-21 | Toyo Soda Mfg Co Ltd | ビス〔β−（Ｎ，Ｎ−ジメチルアミノ）エチル〕エ−テルの製造法 |
| DE3504242A1 (de) * | 1985-02-08 | 1986-08-14 | Henkel KGaA, 4000 Düsseldorf | Verfahren zur herstellung von tertiaeren etheraminen |
| US5268470A (en) * | 1991-07-12 | 1993-12-07 | Buckman Laboratories Internation, Inc. | Diamine compounds, method of making same, method of use of same and intermediates |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3397238A (en) * | 1965-11-16 | 1968-08-13 | Pfizer & Co C | Process for the preparation of alkyl ethers of amino-alcohols |
| GB2010839B (en) * | 1977-12-27 | 1982-05-12 | Union Carbide Corp | Process for producing bis-(n,n-dialkylamino) alkyl ethers |
-
1979
- 1979-05-25 SE SE7904581A patent/SE448538B/sv not_active IP Right Cessation
- 1979-05-30 DE DE19792921972 patent/DE2921972A1/de not_active Ceased
- 1979-06-13 NL NL7904648A patent/NL7904648A/nl unknown
- 1979-06-22 GB GB7921782A patent/GB2045237B/en not_active Expired
- 1979-06-27 JP JP8028479A patent/JPS55130943A/ja active Granted
- 1979-07-04 IT IT24113/79A patent/IT1196398B/it active
- 1979-10-04 FR FR7924722A patent/FR2452477A1/fr active Granted
-
1986
- 1986-11-05 SE SE8604745A patent/SE463367B/sv not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2452477A1 (fr) | 1980-10-24 |
| FR2452477B1 (it) | 1984-10-19 |
| SE7904581L (sv) | 1980-10-01 |
| SE447375B (sv) | 1986-11-10 |
| SE8604745D0 (sv) | 1986-11-05 |
| GB2045237A (en) | 1980-10-29 |
| GB2045237B (en) | 1983-06-15 |
| SE463367B (sv) | 1990-11-12 |
| IT7924113A0 (it) | 1979-07-04 |
| JPS55130943A (en) | 1980-10-11 |
| NL7904648A (nl) | 1980-10-02 |
| IT1196398B (it) | 1988-11-16 |
| JPS5755709B2 (it) | 1982-11-25 |
| SE8604745L (sv) | 1986-11-05 |
| DE2921972A1 (de) | 1980-10-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
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