EP0180848A2 - Concentrés d'agents améliorant l'indice de viscosité pour la préparation d'huiles à fonction multiple - Google Patents
Concentrés d'agents améliorant l'indice de viscosité pour la préparation d'huiles à fonction multiple Download PDFInfo
- Publication number
- EP0180848A2 EP0180848A2 EP85113422A EP85113422A EP0180848A2 EP 0180848 A2 EP0180848 A2 EP 0180848A2 EP 85113422 A EP85113422 A EP 85113422A EP 85113422 A EP85113422 A EP 85113422A EP 0180848 A2 EP0180848 A2 EP 0180848A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- concentrates
- improvers
- improver
- molecular weight
- 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.)
- Withdrawn
Links
- 239000012141 concentrate Substances 0.000 title claims abstract description 23
- 239000003921 oil Substances 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title description 3
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 9
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 9
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 7
- 239000001301 oxygen Substances 0.000 claims abstract description 7
- 238000009835 boiling Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 5
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 5
- 239000002904 solvent Substances 0.000 claims description 14
- 229920001577 copolymer Polymers 0.000 claims description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical class C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical class CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 2
- 229920002367 Polyisobutene Polymers 0.000 claims description 2
- 239000000654 additive Substances 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 239000002480 mineral oil Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000002199 base oil Substances 0.000 description 3
- 235000010446 mineral oil Nutrition 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 2
- 150000004996 alkyl benzenes Chemical class 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007037 hydroformylation reaction Methods 0.000 description 2
- 125000001997 phenyl group Polymers [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 1
- 125000004036 acetal group Chemical group 0.000 description 1
- 150000001241 acetals Chemical class 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000005907 alkyl ester group Chemical group 0.000 description 1
- 230000029936 alkylation Effects 0.000 description 1
- 238000005804 alkylation reaction Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- WPUKZOKYKHYASK-UHFFFAOYSA-N bis(11-methyldodecyl) hexanedioate Chemical compound CC(C)CCCCCCCCCCOC(=O)CCCCC(=O)OCCCCCCCCCCC(C)C WPUKZOKYKHYASK-UHFFFAOYSA-N 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
Classifications
-
- 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
- C10M163/00—Lubricating compositions characterised by the additive being a mixture of a compound of unknown or incompletely defined constitution and a non-macromolecular compound, each of these compounds being essential
-
- 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
- C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
- C10M143/06—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing butene
-
- 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
- C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
- C10M143/12—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing conjugated diene
-
- 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
- C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
-
- 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
- C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
- C10M159/02—Natural products
- C10M159/04—Petroleum fractions, e.g. tars, solvents
-
- 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/06—Well-defined aromatic compounds
-
- 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
-
- 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
-
- 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/104—Aromatic fractions
-
- 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/106—Naphthenic fractions
-
- 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/108—Residual fractions, e.g. bright stocks
-
- 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
-
- 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/026—Butene
-
- 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/06—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing conjugated dienes
-
- 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
-
- 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
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
Definitions
- the invention further relates to multigrade oils which have been produced using these VI improver concentrates.
- VI improvers are known to serve as additives for the production of multigrade oils and essentially have the task of counteracting the lowering of the viscosity of the pure base oil as the temperature increases, but only slightly increasing the viscosity of the base oil at low temperatures.
- the VI improvers ensure a certain level of viscosity over the entire working temperature range of the moving parts to be lubricated and are therefore of particular importance as additives in lubricating oils for internal combustion engines.
- Lubricating oils that contain VI improvers are therefore referred to as multi-grade oils.
- the VI improvers are polymers of certain medium molecular weight ranges (MW ranges), including above all polyisobutene (MW> 5000), ethylene / propylene copolymers (MW 50,000 - 300,000), hydrogenated butadiene / Styrene copolymers (MW 30,000 - 500,000), hydrogenated isoprene / styrene copolymers (MG 30,000 - 300,000) and polymethacrylic acid alkyl esters (MG 20,000 - 100,000).
- MW ranges medium molecular weight ranges
- Characteristic of the VI improvers is their effect on the viscosity behavior in a lubricating oil at 40 ° C and 100 ° C, the corresponding viscosity parameters V 40 and V 100 being determined according to DIN 51 562.
- the object of the invention was therefore to provide such VI improver concentrates which contain at least 2% by weight of the VI improver and whose kinematic viscosity at 40 ° C. (V 40 ) is not greater than 25,000 mm 2 / s.
- Mixtures of araliphatic hydrocarbons whose boiling range is between 320 and 420 are preferred.
- the kinematic intrinsic viscosity of these mixtures is low and is approximately 15-30 mm / s at 40 ° C. (V 40 ), so that they do not present any processing difficulties. They are also unproblematic in terms of safety, since their flash point is above 180 ° C.
- Mixtures whose pour point is below -30 ° C. are preferably used, but this condition is usually met in any case.
- the araliphatic hydrocarbons according to the definition are known and can be obtained industrially in a known manner by alkylation of aromatics, including above all benzene and alkylbenzenes.
- the high-boiling mixtures of such araliphatic hydrocarbons are also by-products, e.g. in the production of detergents based on alkylbenzenes, and are referred to there as "heavy alkylates".
- the heavy alkylates are yellow-brown to brown-black liquids and can easily be used in this form for the preparation of the VI improver concentrates according to the invention. If desired, they can also be lightened in a known manner, e.g. by treatment with adsorbents such as bleaching earth.
- the components of these heavy alkylates are generally araliphatic hydrocarbons with about 25-40 carbon atoms, which contain at least one mono- or polyalkylated benzene ring.
- araliphatic hydrocarbons with about 25-40 carbon atoms, which contain at least one mono- or polyalkylated benzene ring.
- di- or polyfunctional aliphatic hydrocarbons e.g. double or multiple chlorinated aliphatic hydrocarbons, so you get the particularly preferred araliphatic hydrocarbons with two or more benzene rings in the molecule.
- Technical mixtures with these preferred components correspond to certain fractions of the heavy alkylates.
- up to 90% by weight of the heavy alkylates can be replaced by saturated oxygen-containing aliphatic solvents or mixtures of such solvents which, on their own, are only suitable to a limited extent as solvents for the VI improvers.
- the ratio of C to 0 atoms is preferably 5: 1 to 20: 1, it being possible for the oxygen to be in the form of alcoholic hydroxyl groups and of ether, ester and acetal groups.
- Mixtures of such compounds are obtained primarily as residues in the hydroformylation of olefins in that the primary aldehydes and alcohols react further to form aldolization products, esters, ethers and acetals. If unsaturated compounds are formed, the hydrogenation of these mixtures is recommended because the presence of unsaturated compounds in the lubricating oils can lead to a reduction in quality.
- Suitable solvents (b) are, for example, C 12 -C 24 -alkanols and their esters with mono- or polybasic carboxylic acids.
- the concentrates according to the invention should contain at least 50% by weight of solvent (a) in addition to hydroformylation residues (b) and at least 20% by weight of solvent (a) in addition to the alkanols mentioned and their esters.
- the solvents or solvent mixtures according to the definition have an excellent dissolving power for all VI improvers that have been used to date, without their presence in the multigrade oils having a disadvantageous effect.
- V 40 kinematic viscosity
- the concentrates according to the invention are suitable in accordance with their concentration for improving the viscosity index of base oils, including in particular those based on mineral oil (solvent refinates), such as are primarily used for the lubrication of internal combustion engines and their gearboxes.
- base oils including in particular those based on mineral oil (solvent refinates), such as are primarily used for the lubrication of internal combustion engines and their gearboxes.
- the concentration of the VI improvers in these oils is generally between 0.5 and 5% by weight.
- the solvents (a) and (b) to be used according to the invention are accordingly present in the finished multigrade oils in concentrations of 5-10% by weight. These and even considerably higher solvent concentrations - up to about 20% by weight - have not impaired the quality of the multigrade oils according to the previous observations. There are also no problems with the compatibility with other additives, for example corrosion inhibitors, antioxidants and wear protection additives.
- the concentrates were prepared as usual at 40 ° C., the concentration being adjusted so that the kinematic viscosity of the concentrate at 40 ° C. (V 40 ) was approximately 20,000 mm 2 / s.
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Lubricants (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3440196 | 1984-11-03 | ||
| DE19843440196 DE3440196A1 (de) | 1984-11-03 | 1984-11-03 | Konzentrate von viskositaetsindex-verbesserern fuer die herstellung von mehrbereichsoelen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0180848A2 true EP0180848A2 (fr) | 1986-05-14 |
| EP0180848A3 EP0180848A3 (fr) | 1987-09-09 |
Family
ID=6249420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP85113422A Withdrawn EP0180848A3 (fr) | 1984-11-03 | 1985-10-23 | Concentrés d'agents améliorant l'indice de viscosité pour la préparation d'huiles à fonction multiple |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0180848A3 (fr) |
| DE (1) | DE3440196A1 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0262977A3 (fr) * | 1986-10-03 | 1988-10-12 | World Oil Kabushiki Kaisha | Composition lubrifiante liquide |
| US4800032A (en) * | 1987-07-08 | 1989-01-24 | The Lubrizol Corporation | Aliphatic hydrocarbon substituted aromatic hydrocarbons to control black sludge in lubricants |
| RU2155777C2 (ru) * | 1994-04-06 | 2000-09-10 | Эксон Кемикэл Пейтентс Инк. | ЭТИЛЕН-α-ОЛЕФИНОВЫЙ БЛОК СОПОЛИМЕРОВ И СПОСОБ ЕГО ПОЛУЧЕНИЯ |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3994815A (en) * | 1975-01-23 | 1976-11-30 | The Lubrizol Corporation | Additive concentrates and lubricating compositions containing these concentrates |
| US4082680A (en) * | 1976-04-12 | 1978-04-04 | Phillips Petroleum Company | Gear oil compositions |
| US4077893A (en) * | 1977-05-11 | 1978-03-07 | Shell Oil Company | Star-shaped dispersant viscosity index improver |
| FR2533582B1 (fr) * | 1982-09-29 | 1987-03-20 | Exxon Research Engineering Co | Composition d'huile lubrifiante contenant un additif anti-frottement et son application pour diminuer les frottements dans un moteur a combustion interne |
-
1984
- 1984-11-03 DE DE19843440196 patent/DE3440196A1/de not_active Withdrawn
-
1985
- 1985-10-23 EP EP85113422A patent/EP0180848A3/fr not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0262977A3 (fr) * | 1986-10-03 | 1988-10-12 | World Oil Kabushiki Kaisha | Composition lubrifiante liquide |
| US4800032A (en) * | 1987-07-08 | 1989-01-24 | The Lubrizol Corporation | Aliphatic hydrocarbon substituted aromatic hydrocarbons to control black sludge in lubricants |
| RU2155777C2 (ru) * | 1994-04-06 | 2000-09-10 | Эксон Кемикэл Пейтентс Инк. | ЭТИЛЕН-α-ОЛЕФИНОВЫЙ БЛОК СОПОЛИМЕРОВ И СПОСОБ ЕГО ПОЛУЧЕНИЯ |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0180848A3 (fr) | 1987-09-09 |
| DE3440196A1 (de) | 1986-05-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
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