DE567350C - Verfahren zur Herstellung von Starrschmieren - Google Patents
Verfahren zur Herstellung von StarrschmierenInfo
- Publication number
- DE567350C DE567350C DEI34357D DEI0034357D DE567350C DE 567350 C DE567350 C DE 567350C DE I34357 D DEI34357 D DE I34357D DE I0034357 D DEI0034357 D DE I0034357D DE 567350 C DE567350 C DE 567350C
- Authority
- DE
- Germany
- Prior art keywords
- montan wax
- parts
- rigid
- production
- oils
- 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 claims description 7
- 238000005461 lubrication Methods 0.000 title claims description 4
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 239000012170 montan wax Substances 0.000 claims description 15
- 239000002480 mineral oil Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000007127 saponification reaction Methods 0.000 claims description 4
- 239000010775 animal oil Substances 0.000 claims description 3
- 230000032050 esterification Effects 0.000 claims description 3
- 238000005886 esterification reaction Methods 0.000 claims description 3
- 239000003925 fat Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000008158 vegetable oil Substances 0.000 claims description 3
- 239000002641 tar oil Substances 0.000 claims description 2
- 235000013311 vegetables Nutrition 0.000 claims description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000003921 oil Substances 0.000 description 7
- 235000019198 oils Nutrition 0.000 description 7
- 239000000314 lubricant Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 235000011121 sodium hydroxide Nutrition 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 3
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 241000396377 Tranes Species 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/20—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms
- C07C1/24—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms by elimination of water
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
- C07C2/02—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons
- C07C2/04—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons by oligomerisation of well-defined unsaturated hydrocarbons without ring formation
- C07C2/06—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons by oligomerisation of well-defined unsaturated hydrocarbons without ring formation of alkenes, i.e. acyclic hydrocarbons having only one carbon-to-carbon double bond
- C07C2/08—Catalytic processes
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
- C07C2/02—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons
- C07C2/04—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons by oligomerisation of well-defined unsaturated hydrocarbons without ring formation
- C07C2/06—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons by oligomerisation of well-defined unsaturated hydrocarbons without ring formation of alkenes, i.e. acyclic hydrocarbons having only one carbon-to-carbon double bond
- C07C2/08—Catalytic processes
- C07C2/14—Catalytic processes with inorganic acids; with salts or anhydrides of acids
- C07C2/20—Acids of halogen; Salts thereof ; Complexes thereof with organic compounds
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- C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
- C07C2/02—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons
- C07C2/04—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons by oligomerisation of well-defined unsaturated hydrocarbons without ring formation
- C07C2/06—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons by oligomerisation of well-defined unsaturated hydrocarbons without ring formation of alkenes, i.e. acyclic hydrocarbons having only one carbon-to-carbon double bond
- C07C2/08—Catalytic processes
- C07C2/14—Catalytic processes with inorganic acids; with salts or anhydrides of acids
- C07C2/20—Acids of halogen; Salts thereof ; Complexes thereof with organic compounds
- C07C2/22—Metal halides; Complexes thereof with organic compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L91/06—Waxes
- C08L91/08—Mineral waxes
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- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/16—Hydrocarbons
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- C10M1/00—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants
- C10M1/08—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants with additives
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- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11C—FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM
- C11C5/00—Candles
- C11C5/002—Ingredients
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- C07C2527/125—Compounds comprising a halogen and scandium, yttrium, aluminium, gallium, indium or thallium
- C07C2527/126—Aluminium chloride
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- C10M2201/02—Water
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- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
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- 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
- C10N2010/00—Metal present as such or in compounds
- C10N2010/02—Groups 1 or 11
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- 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
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
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- 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
- C10N2040/02—Bearings
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- 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
- C10N2040/14—Electric or magnetic purposes
- C10N2040/16—Dielectric; Insulating oil or insulators
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- 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
- C10N2040/14—Electric or magnetic purposes
- C10N2040/17—Electric or magnetic purposes for electric contacts
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- 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
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/10—Semi-solids; greasy
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- 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
- C10N2060/00—Chemical after-treatment of the constituents of the lubricating composition
- C10N2060/04—Oxidation, e.g. ozonisation
Description
- Verfahren zur Herstellung von Starrschmieren Es wurde gefunden, daß man wertvolle Starrschmieren oder konsistente Fette u. dgl. erhalten kann, wenn man mineralische, tierische oder pflanzliche Öle oder Trane oder Gemische dieser, einschließlich der Teeröle, mit den Verseifungsprodukten von oxydierend gebleichtem Montanwachs oder dessen sonstigen Veresterungsprodukten oder Gemischen dieser vermischt.
- Man verfährt z. B. zweckmäßig so, daß man in dem Öl oder Tran bei höherer Temperatur das gebleichte Montanwachs löst und eine den in ihm enthaltenen Fettsäuren lentsprechende Menge Alkalihydroxyd oder -carbonat, in wenig Wasser gelöst, unter kräftigem Rühren zusetzt. je nach der Menge des zugesetzten Montanwachses, von dem z. B. 6 bis 15% des Öles oder Tranes angewandt werden, und der Beschaffenheit des Ausgangsöles lassen sich Starrschmieren jeder Konsistenz darstellen, die einen Tropfpunkt von 7 5 bis z i o° besitzen.
- Es ist bereits bekannt, mit Salpetersäure vorbehandeltes Rohmontanwachs mit Fetten und Ölen auf Seife zu verarbeiten. Hierbei werden aber auch die Fette und Öle einer Verseifung unterworfen, während nach vorliegendem Verfahren lediglich eine Dispergierung von verseiftem Montanwachs in den mineralischen, pflanzlichen oder tierischen Ölen stattfindet.
- Ferner ist die Verwendung von gereinigtem Montanwachs bzw. seinen Verseifungsprodukten bei der Herstellung von Starrschmieren oder konsistenten Fetten bereits vorgeschlagen worden. Hierbei handelt es sich jedoch nicht um ein speziell mit Oxydationsmitteln gebleichtes Montanwachs. Die Verwendung des letzteren führt zu besonders hochwertigen Schmiermitteln. So erhält man z. B. durch Zusatz von 6 Teilen eines mit Chromsäure gebleichten Montanwachses und o,6 Teilen Ätznatron (in wenig Wasser) zu einem Eismaschinenöl und Erhitzen der Masse auf 95 bis i oo° eine Starrschmiere, die einen Tropfpunkt von i53° besitzt und daher selbst zur Schmierung von ganz heiß laufenden Lagern 'verwendet werden kann. Ein in der gleichen Weise, jedoch unter Verwendung eines durch Destillation gereinigten Montanwachses hergestelltes Produkt besitzt dagegen einen Tropfpunkt von nur So'. Ein derartiges Schmiermittel neigt außerdem leicht zu Verharzungen, was bei den nach vorliegendem Verfahren hergestellten Produkten nicht der Fall ist.
- Beispiel i So Teile Mineralöl, 5 Teile Rüböl und 8,5 Teile gemäß dem Verfahren des Patents 409420 oxydierend gebleichtes Montanwachs von der Säurezahl 140 werden gemischt und auf ioo° bis zur vollkommen klaren Lösung erwärmt. Man läßt die Lösung bis auf etwa 75° abkühlen und sodann unter kräftigem Rühren eine Lösung von i bis i,2 Teilen Natriumhydroxyd in 5 bis 6 Teilen Wasser in dünnem Strahl einfließen, wobei sofort eine gute Emulsion entsteht. Man unterbricht darauf das Rühren und läßt erkalten. Die entstandene Starrschmiere hat einen Tropfpunkt von etwa go°. Beispiel e i o Teile eines durch Veresterung von oxydierend gebleichtem Montanwachs mit Glykol erhaltenen Produktes mit der Säurezahl 2o werden in i oo Teilen eines Heizöles gelöst und unter Rühren bei go° mit einer Lösung von o,5 Teilen Natriumhydroxyd in i2 Teilen Wasser versetzt. Es bildet sich nach kurzer Zeit eine Starrschmiere von schmierseifenartiger Konsistenz, die den Tropfpunkt i43° besitzt.
- Beispiel 3 ioo Teile eines Eismaschinenöles werden mit 8 Teilen eines mit Chromsäure gebleichten Montanwachses und 2 Teilen eines mit Chromsäure gebleichten Montanwachses, das teils mit Glykol verestert, teils in das Calciumsalz übergeführt ist, bei go° versetzt und mit einer Lösung von i Teil Ätznatron in 5 Teilen Wasser energisch verrührt. Es wird eine Starrschmiere von schmierseifenartiger Konsistenz mit dem Tropfpunkt 153' erhalten.
Claims (1)
- PATENTANSPRUCFI: Verfahren zur Herstellung von Starrschmieren oder konsistenten Fetten aus mineralischen, pflanzlichen oder tierischen ölen. oder Gemischen dieser, einschließlich der Teeröle, mit den Verseifungsprodukten von Montanwachs, gekennzeichnet durch die Verwendung von verseiftem, oxydierend gebleichtem Montanwachs oder dessen Veresterungsprodukten oder Gemischen dieser.
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI34357D DE567350C (de) | 1928-05-10 | 1928-05-10 | Verfahren zur Herstellung von Starrschmieren |
DEI43483D DE574753C (de) | 1928-05-10 | 1932-01-16 | Verfahren zur Herstellung von Starrschmieren |
GB6569/32A GB399527A (en) | 1928-05-10 | 1932-03-04 | A process for improving oils, especially lubricating oils |
GB13148/32A GB401295A (en) | 1928-05-10 | 1932-05-06 | Improvements in the manufacture and production of solid greases |
NL61797A NL44751C (de) | 1928-05-10 | 1932-07-07 | |
FR740407D FR740407A (fr) | 1928-05-10 | 1932-07-23 | Procédé pour améliorer les propriétés des mélanges d'hydrocarbures |
NL63802A NL34106C (de) | 1928-05-10 | 1933-01-04 | |
FR42897D FR42897E (fr) | 1928-05-10 | 1933-01-10 | Procédé pour améliorer les propriétés des mélanges d'hydrocarbures |
FR43093D FR43093E (fr) | 1928-05-10 | 1933-01-26 | Procédé pour améliorer les propriétés des mélanges d'hydrocarbures |
NL68036A NL36210C (de) | 1928-05-10 | 1934-01-06 | |
NL68081A NL39992C (de) | 1928-05-10 | 1934-01-11 | |
NL68182A NL39169C (de) | 1928-05-10 | 1934-01-22 | |
FR44501D FR44501E (fr) | 1928-05-10 | 1934-11-26 | Procédé pour améliorer les propriétés des mélanges d'hydrocarbures |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI34357D DE567350C (de) | 1928-05-10 | 1928-05-10 | Verfahren zur Herstellung von Starrschmieren |
DEI43483D DE574753C (de) | 1928-05-10 | 1932-01-16 | Verfahren zur Herstellung von Starrschmieren |
GB6569/32A GB399527A (en) | 1928-05-10 | 1932-03-04 | A process for improving oils, especially lubricating oils |
Publications (1)
Publication Number | Publication Date |
---|---|
DE567350C true DE567350C (de) | 1932-12-31 |
Family
ID=40751010
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEI34357D Expired DE567350C (de) | 1928-05-10 | 1928-05-10 | Verfahren zur Herstellung von Starrschmieren |
DEI43483D Expired DE574753C (de) | 1928-05-10 | 1932-01-16 | Verfahren zur Herstellung von Starrschmieren |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEI43483D Expired DE574753C (de) | 1928-05-10 | 1932-01-16 | Verfahren zur Herstellung von Starrschmieren |
Country Status (4)
Country | Link |
---|---|
DE (2) | DE567350C (de) |
FR (4) | FR740407A (de) |
GB (2) | GB399527A (de) |
NL (5) | NL44751C (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2181188A (en) * | 1937-02-06 | 1939-11-28 | Bell Telephone Labor Inc | Insulated cable |
DE746304C (de) * | 1937-07-07 | 1944-07-21 | Ig Farbenindustrie Ag | Verfahren zur Gewinnung von als Isolieroele geeigneten Kohlenwasserstoffoelen |
DE742578C (de) * | 1939-07-12 | 1953-01-05 | Studien Und Verwertungs G M B | Verfahren zur Alkylierung von Paraffinkohlenwasserstoffen, insbesondere Isoparaffinen |
DE748631C (de) * | 1939-12-10 | 1944-11-07 | Schmiermittel | |
US2445311A (en) * | 1942-03-28 | 1948-07-20 | Stanco Inc | Incendiary bomb mixture |
US2431008A (en) * | 1943-09-15 | 1947-11-18 | Standard Oil Dev Co | Cooling fluid |
US2522455A (en) * | 1948-06-24 | 1950-09-12 | Standard Oil Dev Co | Mineral oil containing a copolymer of an aliphatic monoolefin and dihydronaphthalene |
US2896593A (en) * | 1955-08-08 | 1959-07-28 | Lawrence E Riemenschneider | Method for operating two-cycle engines |
US3004837A (en) * | 1956-08-09 | 1961-10-17 | Lawrence E Riemenschneider | Fuel for two-cycle internal combustion engines |
US3166387A (en) * | 1961-07-17 | 1965-01-19 | Standard Oil Co | Ammonium carboxylate pour point depressants for fuel oil composition |
ES8609441A1 (es) * | 1984-06-27 | 1986-09-01 | Epoch International | Un metodo de preparar un combustible emulsificado. |
US4769906A (en) * | 1986-06-18 | 1988-09-13 | Switchcraft, Inc. | Round-to-flat cable assembly |
EP0257303B1 (de) * | 1986-07-29 | 1991-10-23 | Mitsubishi Gas Chemical Company, Inc. | Verfahren zur Herstellung von Pech, verwertbar zur Herstellung von Kohlenstoffkörpern |
CN115058272B (zh) * | 2022-06-20 | 2023-03-10 | 太原理工大学 | 一种锂基润滑脂及其制备方法 |
CN114907905B (zh) * | 2022-06-20 | 2023-03-14 | 太原理工大学 | 一种烷基四氢萘型锂基润滑脂及其制备方法 |
-
1928
- 1928-05-10 DE DEI34357D patent/DE567350C/de not_active Expired
-
1932
- 1932-01-16 DE DEI43483D patent/DE574753C/de not_active Expired
- 1932-03-04 GB GB6569/32A patent/GB399527A/en not_active Expired
- 1932-05-06 GB GB13148/32A patent/GB401295A/en not_active Expired
- 1932-07-07 NL NL61797A patent/NL44751C/xx active
- 1932-07-23 FR FR740407D patent/FR740407A/fr not_active Expired
-
1933
- 1933-01-04 NL NL63802A patent/NL34106C/xx active
- 1933-01-10 FR FR42897D patent/FR42897E/fr not_active Expired
- 1933-01-26 FR FR43093D patent/FR43093E/fr not_active Expired
-
1934
- 1934-01-06 NL NL68036A patent/NL36210C/xx active
- 1934-01-11 NL NL68081A patent/NL39992C/xx active
- 1934-01-22 NL NL68182A patent/NL39169C/xx active
- 1934-11-26 FR FR44501D patent/FR44501E/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE574753C (de) | 1933-04-20 |
NL44751C (de) | 1938-12-15 |
GB401295A (en) | 1933-11-06 |
FR42897E (fr) | 1933-11-15 |
NL34106C (de) | 1934-11-15 |
NL39992C (de) | 1937-01-15 |
FR43093E (fr) | 1934-02-08 |
NL39169C (de) | 1936-10-15 |
NL36210C (de) | 1935-08-15 |
FR740407A (fr) | 1933-01-26 |
FR44501E (fr) | 1935-02-18 |
GB399527A (en) | 1933-10-04 |
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