CH672487A5 - - Google Patents
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- Publication number
- CH672487A5 CH672487A5 CH2885/86A CH288586A CH672487A5 CH 672487 A5 CH672487 A5 CH 672487A5 CH 2885/86 A CH2885/86 A CH 2885/86A CH 288586 A CH288586 A CH 288586A CH 672487 A5 CH672487 A5 CH 672487A5
- Authority
- CH
- Switzerland
- Prior art keywords
- xylene
- chloromethylated
- product
- hydrochloric acid
- lubricating
- Prior art date
Links
- 239000000203 mixture Substances 0.000 claims description 55
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 50
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 41
- 239000008096 xylene Substances 0.000 claims description 31
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 30
- 239000000460 chlorine Substances 0.000 claims description 29
- 229910052801 chlorine Inorganic materials 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 25
- 239000005069 Extreme pressure additive Substances 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 23
- 125000003963 dichloro group Chemical group Cl* 0.000 claims description 22
- 239000010687 lubricating oil Substances 0.000 claims description 17
- 238000007265 chloromethylation reaction Methods 0.000 claims description 16
- 230000001050 lubricating effect Effects 0.000 claims description 12
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 10
- 150000002430 hydrocarbons Chemical group 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 229920002866 paraformaldehyde Polymers 0.000 claims description 10
- HYHCSLBZRBJJCH-UHFFFAOYSA-N sodium polysulfide Chemical compound [Na+].S HYHCSLBZRBJJCH-UHFFFAOYSA-N 0.000 claims description 10
- 150000003738 xylenes Chemical class 0.000 claims description 10
- 229930195733 hydrocarbon Natural products 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 238000005555 metalworking Methods 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 239000010720 hydraulic oil Substances 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 4
- -1 4: 1 Chemical compound 0.000 claims description 3
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 150000003464 sulfur compounds Chemical class 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 239000008098 formaldehyde solution Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- 229920006395 saturated elastomer Chemical group 0.000 claims description 2
- 229930195734 saturated hydrocarbon Chemical group 0.000 claims description 2
- 229930195735 unsaturated hydrocarbon Chemical group 0.000 claims description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims 2
- 239000012752 auxiliary agent Substances 0.000 claims 2
- 239000003513 alkali Substances 0.000 claims 1
- 150000001342 alkaline earth metals Chemical class 0.000 claims 1
- 229910052976 metal sulfide Inorganic materials 0.000 claims 1
- 150000004045 organic chlorine compounds Chemical class 0.000 claims 1
- 239000000047 product Substances 0.000 description 42
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 29
- 239000011593 sulfur Substances 0.000 description 27
- 229910052717 sulfur Inorganic materials 0.000 description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- 150000001875 compounds Chemical class 0.000 description 15
- 238000003466 welding Methods 0.000 description 12
- 150000008116 organic polysulfides Chemical group 0.000 description 11
- 238000004817 gas chromatography Methods 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 239000003921 oil Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 239000005077 polysulfide Substances 0.000 description 8
- 229920001021 polysulfide Polymers 0.000 description 8
- 150000008117 polysulfides Polymers 0.000 description 8
- 239000000654 additive Substances 0.000 description 7
- 239000002199 base oil Substances 0.000 description 7
- 239000013638 trimer Substances 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 239000000539 dimer Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 125000003118 aryl group Chemical group 0.000 description 5
- ZLCCLBKPLLUIJC-UHFFFAOYSA-L disodium tetrasulfane-1,4-diide Chemical compound [Na+].[Na+].[S-]SS[S-] ZLCCLBKPLLUIJC-UHFFFAOYSA-L 0.000 description 5
- 229910052979 sodium sulfide Inorganic materials 0.000 description 5
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 5
- 239000007858 starting material Substances 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 125000005842 heteroatom Chemical group 0.000 description 4
- IVSZLXZYQVIEFR-UHFFFAOYSA-N m-xylene Chemical group CC1=CC=CC(C)=C1 IVSZLXZYQVIEFR-UHFFFAOYSA-N 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 3
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical group ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- KWKXNDCHNDYVRT-UHFFFAOYSA-N dodecylbenzene Chemical compound CCCCCCCCCCCCC1=CC=CC=C1 KWKXNDCHNDYVRT-UHFFFAOYSA-N 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- VXNSQGRKHCZUSU-UHFFFAOYSA-N octylbenzene Chemical compound [CH2]CCCCCCCC1=CC=CC=C1 VXNSQGRKHCZUSU-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 239000002841 Lewis acid Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 150000007517 lewis acids Chemical class 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000005987 sulfurization reaction Methods 0.000 description 2
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 description 2
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 229910006124 SOCl2 Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012454 non-polar solvent Substances 0.000 description 1
- 239000006259 organic additive Substances 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical class O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C321/00—Thiols, sulfides, hydropolysulfides or polysulfides
- C07C321/24—Thiols, sulfides, hydropolysulfides, or polysulfides having thio groups bound to carbon atoms of six-membered aromatic rings
- C07C321/28—Sulfides, hydropolysulfides, or polysulfides having thio groups bound to carbon atoms of six-membered aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/02—Sulfurised compounds
- C10M135/04—Hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/20—Thiols; Sulfides; Polysulfides
- C10M135/22—Thiols; Sulfides; Polysulfides containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
- C10M2219/083—Dibenzyl sulfide
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/241—Manufacturing joint-less pipes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/242—Hot working
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/243—Cold working
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/244—Metal working of specific metals
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/244—Metal working of specific metals
- C10N2040/245—Soft metals, e.g. aluminum
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/244—Metal working of specific metals
- C10N2040/246—Iron or steel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/244—Metal working of specific metals
- C10N2040/247—Stainless steel
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Lubricants (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8610897A FR2602786B1 (fr) | 1986-07-28 | 1986-07-28 | Procede de preparation d'additifs extreme-pression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH672487A5 true CH672487A5 (en)) | 1989-11-30 |
Family
ID=9337787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH2885/86A CH672487A5 (en)) | 1986-07-28 | 1986-07-18 |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS6343997A (en)) |
| BE (1) | BE905179A (en)) |
| CH (1) | CH672487A5 (en)) |
| FR (1) | FR2602786B1 (en)) |
| GB (1) | GB2193957A (en)) |
| NL (1) | NL8601966A (en)) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB596859A (en) * | 1944-10-13 | 1948-01-13 | Standard Oil Dev Co | Improvements in or relating to lubricating oils |
| GB453113A (en) * | 1935-03-14 | 1936-09-04 | James Chignell | A new or improved air lift for bottle filling and like machines |
| GB548150A (en) * | 1941-03-25 | 1942-09-28 | Elliott Alfred Evans | Improvements in or relating to the production of alkyl, aralkyl and arylacyl organic compounds containing divalent sulphur |
| GB763246A (en) * | 1953-08-20 | 1956-12-12 | Boots Pure Drug Co Ltd | A new diaryl disulphide and acaricidal compositions containing it |
| BE541222A (en)) * | 1954-09-13 | |||
| BE601608A (en)) * | 1960-03-22 | |||
| NL269961A (en)) * | 1960-10-05 | |||
| FR1358398A (fr) * | 1962-11-20 | 1964-04-17 | Aquitaine Petrole | Fabrication de disulfures organiques |
| GB1132474A (en) * | 1965-12-29 | 1968-11-06 | Agfa Gevaert Nv | Method for the preparation of thiogold (i) compounds |
| DE1668462B2 (de) * | 1967-01-20 | 1976-12-16 | Monsanto Co., St. Louis, Mo. (V.StA.) | Verfahren zur herstellung von di- (tert.-alkyl)-trisulfiden |
| FR2130985A5 (en)) * | 1971-03-29 | 1972-11-10 | Aquitaine Petrole | |
| GB1423429A (en) * | 1973-03-29 | 1976-02-04 | Wyeth John & Brother Ltd | Thiols and disulphides |
-
1986
- 1986-07-18 CH CH2885/86A patent/CH672487A5/de not_active IP Right Cessation
- 1986-07-23 GB GB08617993A patent/GB2193957A/en not_active Withdrawn
- 1986-07-28 FR FR8610897A patent/FR2602786B1/fr not_active Expired - Lifetime
- 1986-07-28 BE BE1/011526A patent/BE905179A/fr not_active IP Right Cessation
- 1986-07-31 NL NL8601966A patent/NL8601966A/nl not_active Application Discontinuation
- 1986-08-06 JP JP61183571A patent/JPS6343997A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NL8601966A (nl) | 1988-02-16 |
| FR2602786B1 (fr) | 1990-05-04 |
| GB2193957A (en) | 1988-02-24 |
| JPS6343997A (ja) | 1988-02-25 |
| BE905179A (fr) | 1987-01-28 |
| FR2602786A1 (fr) | 1988-02-19 |
| GB8617993D0 (en) | 1986-08-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased | ||
| PL | Patent ceased |