JP2010189639A - Lubricating composition - Google Patents
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- 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
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/02—Specified values of viscosity or viscosity index
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- 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
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
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- 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
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- 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
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
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- 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
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
- C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
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- 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
- C10M2205/04—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
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- 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
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- 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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
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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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/04—Molecular weight; Molecular weight distribution
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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
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/40—Low content or no content compositions
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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
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/54—Fuel economy
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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
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/68—Shear stability
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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
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
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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
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/042—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for automatic transmissions
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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
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/044—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for manual transmissions
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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
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
- C10N2040/045—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for continuous variable transmission [CVT]
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- Chemical & Material Sciences (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
Description
本発明は、伝達流体（しかしこれに限定されない）としての特定の用途の基油および１種以上の添加物を含む潤滑組成物に関する。 The present invention relates to a lubricating composition comprising a base oil of particular use as, but not limited to, a transmission fluid and one or more additives.
伝達流体は当業者に周知であり、自動車産業において、たとえば、自動変速装置（ＡＴＦ）、手動変速装置（ＭＴＦ）、二段クラッチ変速装置（ＤＣＴ）、連続可変式変速装置（ＣＶＴ）、動力分配装置（ＴＣ）、車軸、水力およびパワーステアリング装置に使用されている。伝達流体はまた、様々な産業の応用分野において潤滑、動力分配装置および他の目的に用いることができる。 Transmission fluids are well known to those skilled in the art, and in the automotive industry, for example, automatic transmission (ATF), manual transmission (MTF), two-stage clutch transmission (DCT), continuously variable transmission (CVT), power distribution Used in equipment (TC), axle, hydraulic and power steering devices. The transmission fluid can also be used for lubrication, power distribution devices and other purposes in various industrial applications.
通常、伝達流体は基油（通常、基油の混合物からなる）、粘度指数（ＶＩ）向上剤（増粘剤などの）、ならびに、たとえば酸化、さび、腐食、摩耗、（微小）孔食、スカッフィング、発泡などに対して保護を与えるための、ならびに、汚染処理、レオロジー特性、臭気および色などの特性の改良のための１種以上の性能改善用添加剤を含有する性能改善用添加剤パッケージを含む。 Usually, the transmission fluid is a base oil (usually composed of a mixture of base oils), a viscosity index (VI) improver (such as a thickener), and, for example, oxidation, rust, corrosion, wear, (micro) pitting, A performance improving additive package containing one or more performance improving additives for providing protection against scuffing, foaming, etc. and for improving properties such as contamination treatment, rheological properties, odor and color including.
ＥＰ−Ａ−１５５３１５８に開示された実施例に関しては、ＶＩ向上剤が、比較的高い分子量、またはオレフィンコポリマー、ポリアルキルメタクリレートおよびスチレンマレイン酸エステルなどの代替増粘剤を有するポリイソアルキレン成分であってもよい。ＥＰ−Ａ−１５５３１５８の実施例（パラグラフ［００８４］の表を参照）において示されるように、６．５から８．０重量％のＶＩ向上剤を使用すると４．０１ｃＳｔから５．２ｃＳｔ以上の動粘度（１００℃での）の増加を結果として生じる。 For the examples disclosed in EP-A-1553158, the VI improver is a polyisoalkylene component having a relatively high molecular weight or alternative thickeners such as olefin copolymers, polyalkylmethacrylates and styrene maleates. May be. As shown in the examples of EP-A-1553158 (see table in paragraph [0084]), when using 6.5 to 8.0% by weight of VI improver, a dynamics of 4.01 cSt to over 5.2 cSt An increase in viscosity (at 100 ° C.) results.
上記または他のＶＩ向上剤（または増粘剤）の使用の欠点は、動作中、これらの成分を使用すると流体の剪断安定度の低下、すなわち、流体の永久的な粘性低下をもたらすことである。剪断安定度の低下もまた、流動点降下剤として組成物に添加されるＶＩ向上剤について観察される。後者のＶＩ向上剤の例はポリアルキルメタクリレートを含むが、これに限定されない。 A disadvantage of the use of these and other VI improvers (or thickeners) is that, during operation, use of these components results in a decrease in fluid shear stability, ie, a permanent decrease in fluid viscosity. . A decrease in shear stability is also observed for VI improvers added to the composition as pour point depressants. Examples of the latter VI improver include, but are not limited to, polyalkyl methacrylate.
しかし、ブルックフィールド粘度（たとえば−４０℃での）についての厳しい要求と組み合わせて、動粘度（たとえば１００℃での）についての厳しい要求を満たすために、相当な量のＶＩ向上剤を使用しないで鉱物性基油で伝達流体を配合することは疑問である。例として、前述のＥＰ−Ａ−１５５３１５８（「基準線１」および「基準線１Ａ」）に開示されるようなＶＩ向上剤を含まない基準流体は、１００℃で４．０１ｃＳｔの動粘度および−４０℃で１７，０００のブルックフィールド粘度を示す。 However, in order to meet the stringent requirements for kinematic viscosity (for example at 100 ° C.) in combination with the stringent requirements for Brookfield viscosity (for example at −40 ° C.), a substantial amount of VI improver should not be used. It is questionable to formulate the transmission fluid with a mineral base oil. As an example, a reference fluid without a VI improver as disclosed in the aforementioned EP-A-1553158 (“Baseline 1” and “Baseline 1A”) has a kinematic viscosity of 4.01 cSt at −100 ° C. and − It exhibits a Brookfield viscosity of 17,000 at 40 ° C.
この点において、たとえば最新式の自動変速装置流体、最新式の二段湿式クラッチ流体、最新式のＣＶＴ流体または最新式の動力分配装置流体について、−４０℃で１７，０００ｍＰａｓのブルックフィールド粘度が不都合な高い値であることは当業者にはわかるものと留意される。 In this regard, for example, a state-of-the-art automatic transmission fluid, a state-of-the-art two-stage wet clutch fluid, a state-of-the-art CVT fluid or a state-of-the-art power distribution fluid has a disadvantage of a Brookfield viscosity of 17,000 mPas at −40 ° C. It is noted that those skilled in the art will understand that this is a very high value.
本発明は、上記の問題または他の問題を最小限に抑えることを目的とする。 The present invention seeks to minimize the above and other problems.
本発明の別の目的は、特に（高温での）動粘度と（低温での）ブルックフィールド粘度の厳しい条件を満たす伝達流体として使用するための代替潤滑組成物を提供することである。 Another object of the present invention is to provide an alternative lubricating composition for use as a transmission fluid that meets the stringent requirements of kinematic viscosity (at high temperatures) and Brookfield viscosity (at low temperatures).
１つ以上の上記または他の目的は、フィッシャー−トロプシュ由来基油を含む基油および１種以上の添加剤を含み、
−１００℃（ＡＳＴＭ Ｄ４４５準拠）で少なくとも３．６ｃＳｔの動粘度、
−−４０℃（ＤＩＮ５１３９８準拠）で１０，０００ｍＰａｓ未満のブルックフィールド粘度
を有し、組成物の全重量に基づいて１．０重量％未満のＶＩ向上剤を含む潤滑組成物を提供することによって本発明により得ることができる。
One or more of the above or other objects include a base oil comprising a Fischer-Tropsch derived base oil and one or more additives,
A kinematic viscosity of at least 3.6 cSt at −100 ° C. (according to ASTM D445),
By providing a lubricating composition having a Brookfield viscosity of less than 10,000 mPas at −40 ° C. (according to DIN 51398) and containing less than 1.0% by weight of VI improver, based on the total weight of the composition. It can be obtained by the invention.
本発明の重要な利点は、改善された剪断安定度特性に加えて、望ましい燃費特性を得ることができることである。後者は、本発明による潤滑組成物の比較的低い動粘度（４０℃から１００℃の範囲での）の結果である。 An important advantage of the present invention is that desirable fuel economy characteristics can be obtained in addition to improved shear stability characteristics. The latter is a result of the relatively low kinematic viscosity (in the range of 40 ° C. to 100 ° C.) of the lubricating composition according to the invention.
さらなる本発明の利点は、ＩＶ群の基油（ＰＡＯ；ポリ−α−オレフィン基油）を用いる必要のない潤滑組成物を配合することが可能であることである。この種のＰＡＯを用いる欠点は、その製造コストが高く、ＰＡＯが比較的高いＣＯ２フットプリントであることである。 A further advantage of the present invention is that it is possible to formulate a lubricating composition that does not require the use of a Group IV base oil (PAO; poly-α-olefin base oil). The disadvantage of using this type of PAO are highly their production costs, it is that PAO is relatively high CO 2 footprint.
（基油が少なくともフィッシャー−トロプシュ由来基油を含み、本発明による潤滑油組成物に関する要件が満たされる場合は、）本発明による潤滑組成物で用いられる基油に関して特に限定はなく、様々な通常の鉱油、合成油および植物油などの天然に由来するエステルも、都合よく用いることができる。 There is no particular limitation on the base oil used in the lubricating composition according to the present invention (if the base oil includes at least a Fischer-Tropsch derived base oil and the requirements for the lubricating oil composition according to the present invention are met) Naturally derived esters such as mineral oils, synthetic oils and vegetable oils can also be conveniently used.
本発明で用いられる基油は、（フィッシャー−トロプシュ由来基油に加えて）１種以上の鉱油および／または１種以上の合成油の混合物を含むのが好都合である。したがって、本発明によると、用語「基油」は、少なくとも１種のフィッシャー−トロプシュ由来基油を含む１種を超える基油を含む混合物を指すことができる。鉱油は、水素化精製法および／または脱蝋で精製することによってさらに精製してもよい、パラフィン、ナフテンまたはパラフィン／ナフテン混合タイプの液状の石油および溶媒処理または酸処理した鉱物性潤滑油を含む。 The base oil used in the present invention advantageously comprises a mixture of one or more mineral oils and / or one or more synthetic oils (in addition to the Fischer-Tropsch derived base oil). Thus, according to the present invention, the term “base oil” can refer to a mixture comprising more than one base oil comprising at least one Fischer-Tropsch derived base oil. Mineral oils include paraffin, naphthene or paraffin / naphthene mixed type liquid petroleum and solvent treated or acid treated mineral lubricating oils that may be further refined by hydrorefining and / or dewaxing .
本発明の潤滑油組成物で使用される適切な基油は、Ｉ−ＩＩＩ群の鉱物性基油、ＶＩ群のポリα−オレフィン（ＰＡＯ）、Ｉ−ＩＩＩ群のフィッシャー−トロプシュ由来基油およびこれらの混合物である。基油（または１種を超える基油が用いられる場合は、基油混合物）は、ＩＩ群またはＩＩＩ群の基油、好ましくはＩＩＩ群の基油の要件（特にＶＩに関して、硫黄分および飽和炭化水素の含量）を満たすのが好ましい。 Suitable base oils for use in the lubricating oil compositions of the present invention include Group I-III mineral base oils, Group VI polyalphaolefins (PAO), Group I-III Fischer-Tropsch derived base oils and It is a mixture of these. The base oil (or base oil mixture, if more than one base oil is used) is a group II or group III base oil, preferably a group III base oil requirement (especially with respect to VI, sulfur and saturated carbonization). (Hydrogen content) is preferably satisfied.
本発明において、「Ｉ群」、「ＩＩ群」、「ＩＩＩ群」および「ＩＶ群」の基油は、アメリカ石油協会（ＡＰＩ）のカテゴリーＩ、ＩＩ、ＩＩＩおよびＩＶの定義に従う潤滑油基油を意味する。これらのＡＰＩカテゴリーはＡＰＩ刊行物１５０９第１５版、付録Ｅ（２００２年４月）に定義されている。 In the present invention, "Group I", "Group II", "Group III" and "Group IV" base oils are lubricating base oils in accordance with American Petroleum Institute (API) categories I, II, III and IV definitions. Means. These API categories are defined in API Publication 1509 15th edition, Appendix E (April 2002).
フィッシャー−トロプシュ由来基油は当業界で知られている。用語「フィッシャー−トロプシュ由来」は、フィッシャー−トロプシュ法の合成生成物に由来する基油であることを意味する。フィッシャー−トロプシュ由来基油もＧＴＬ（ガスから液体の）基油と呼んでもよい。本発明の潤滑組成物で基油として都合よく用いることができる適切なフィッシャー−トロプシュ由来基油は、たとえばＥＰ０７７６９５９、ＥＰ０６６８３４２、ＷＯ９７／２１７８８、ＷＯ００／１５７３６、ＷＯ００／１４１８８、ＷＯ００／１４１８７、ＷＯ００／１４１８３、ＷＯ００／１４１７９、ＷＯ００／０８１１５、ＷＯ９９／４１３３２、ＥＰ１０２９０２９、ＷＯ０１／１８１５６およびＷＯ０１／５７１６６に開示されたようなものである。 Fischer-Tropsch derived base oils are known in the art. The term “Fischer-Tropsch derived” means a base oil derived from the synthetic product of the Fischer-Tropsch process. A Fischer-Tropsch derived base oil may also be referred to as a GTL (gas to liquid) base oil. Suitable Fischer-Tropsch derived base oils that can be conveniently used as base oils in the lubricating compositions of the present invention include, for example, EP0776959, EP0668342, WO97 / 21788, WO00 / 15736, WO00 / 14188, WO00 / 14187, WO00 / 14183. , WO00 / 14179, WO00 / 08115, WO99 / 41332, EP1029029, WO01 / 18156 and WO01 / 57166.
合成油は、オレフィンオリゴマー（ポリα−オレフィン基油を含む；ＰＡＯ）、二塩基酸エステル、多価アルコールエステル、ポリアルキレングリコール（ＰＡＧ）、アルキルナフタレンおよび脱蝋したワックス状異性化物などの炭化水素油を含む。「Ｓｈｅｌｌ ＸＨＶＩ」（商標）の名称でＳｈｅｌｌグループから販売されている合成炭化水素基油は、都合よく用いることができる。 Synthetic oils are hydrocarbons such as olefin oligomers (including poly α-olefin base oils; PAO), dibasic acid esters, polyhydric alcohol esters, polyalkylene glycols (PAG), alkylnaphthalenes and dewaxed waxy isomerates. Contains oil. A synthetic hydrocarbon base oil sold by the Shell group under the name “Shell XHVI” ™ may be conveniently used.
ポリα−オレフィン基油（ＰＡＯ）およびこれらの製造は当業界で周知である。本発明の潤滑組成物で用いることができる好ましいポリα−オレフィン基油は、直鎖状のＣ２からＣ３２、好ましくはＣ６からＣ１６の、α−オレフィンに由来してもよい。前記ポリα−オレフィンのためのとりわけ好ましい供給材料は、１−オクタン、１−デケン、１−ドデケンおよび１−テトラデケンである。 Poly alpha-olefin base oils (PAO) and their manufacture are well known in the art. Preferred poly α-olefin base oils that can be used in the lubricating compositions of the present invention may be derived from linear C 2 to C 32 , preferably C 6 to C 16 α-olefins. Particularly preferred feedstocks for the polyalphaolefins are 1-octane, 1-deken, 1-dodeken and 1-tetradecene.
ＰＡＯの高い製造コストを考慮すると、ＰＡＯ基油よりフィッシャー−トロプシュ由来基油を用いる方がはるかに好ましい。したがって、好ましくは、基油は、５０重量％を超え、好ましくは６０重量％を超え、より好ましくは７０重量％を超え、さらに好ましくは８０重量％を超え、最も好ましくは９０重量％を超えるフィッシャー−トロプシュ由来基油を含む。特に好ましい実施形態において、基油のうち５重量％以下、好ましくは２重量％以下が、フィッシャー−トロプシュ由来基油ではない。基油の１００重量％が１種以上のフィッシャー−トロプシュ由来基油に基づくことは、より一層好ましい。 In view of the high production cost of PAO, it is much more preferable to use a Fischer-Tropsch derived base oil than a PAO base oil. Thus, preferably the base oil is greater than 50%, preferably greater than 60%, more preferably greater than 70%, even more preferably greater than 80%, and most preferably greater than 90% by weight. -Contains a Tropsch derived base oil. In a particularly preferred embodiment, no more than 5 wt%, preferably no more than 2 wt% of the base oil is not a Fischer-Tropsch derived base oil. It is even more preferred that 100% by weight of the base oil is based on one or more Fischer-Tropsch derived base oils.
本発明による特に好ましい実施形態によると、組成物は、ＩＶ群の基油の２０重量％未満、好ましくは１０未満、より好ましくは５未満、さらに好ましくは３未満、特に好ましくは２未満、より一層好ましくは１％未満、最も好ましくは０重量％のＩＶ群の基油を含む。 According to a particularly preferred embodiment according to the invention, the composition is less than 20% by weight of the Group IV base oil, preferably less than 10, more preferably less than 5, even more preferably less than 3, particularly preferably less than 2, even more. Preferably less than 1%, most preferably 0% by weight of Group IV base oils.
本発明の潤滑組成物に組込まれる基油の合計量は、潤滑組成物の全重量に関して、６０から９９．５重量％の範囲の量で存在するのが好ましく、より好ましくは６５から９８重量％の範囲の量、および最も好ましくは７０から９６重量％の範囲の量である。 The total amount of base oil incorporated into the lubricating composition of the present invention is preferably present in an amount ranging from 60 to 99.5 wt%, more preferably from 65 to 98 wt%, based on the total weight of the lubricating composition. And most preferably in the range of 70 to 96% by weight.
本発明によると、基油は、好ましくは１００℃で少なくとも３．０ｃＳｔ（ＡＳＴＭ Ｄ４４５準拠）、好ましくは少なくとも４．０ｃＳｔの動粘度を有している。通常、基油は１００℃で１０．０未満、好ましくは８．５未満、より好ましくは７．０ｃＳｔ未満、または５．５ｃＳｔ未満の動粘度を有している。基油が２種またはより多くの基油の混合物を含む場合、基油のこの動粘度への全寄与が、示す通りであることが好ましい（好ましくは少なくとも３．０ｃＳｔおよび通常１０．０ｃＳｔ未満など）。 According to the present invention, the base oil preferably has a kinematic viscosity at 100 ° C. of at least 3.0 cSt (according to ASTM D445), preferably at least 4.0 cSt. Typically, the base oil has a kinematic viscosity at 100 ° C. of less than 10.0, preferably less than 8.5, more preferably less than 7.0 cSt, or less than 5.5 cSt. Where the base oil comprises a mixture of two or more base oils, it is preferred that the total contribution of this base oil to this kinematic viscosity is as indicated (preferably at least 3.0 cSt and usually less than 10.0 cSt etc. ).
上に述べたように、本発明による組成物は、−４０℃でのブルックフィールド粘度および１００℃での動粘度に対して特定の具体的な要件を満たす。 As stated above, the composition according to the invention meets certain specific requirements for Brookfield viscosity at -40 ° C and kinematic viscosity at 100 ° C.
通常、組成物の１００℃での動粘度（ＡＳＴＭ Ｄ４４５準拠）は、３．６から６．０ｃＳｔ、通常５．５ｃＳｔ未満の間にある。好ましくは、組成物の１００℃での動粘度は少なくとも３．７、好ましくは少なくとも３．９、より好ましくは少なくとも４．１、さらにより好ましくは少なくとも４．２、最も好ましくは少なくとも４．５ｃＳｔである。 Usually the kinematic viscosity at 100 ° C. of the composition (according to ASTM D445) is between 3.6 and 6.0 cSt, usually less than 5.5 cSt. Preferably, the composition has a kinematic viscosity at 100 ° C. of at least 3.7, preferably at least 3.9, more preferably at least 4.1, even more preferably at least 4.2, and most preferably at least 4.5 cSt. is there.
通常、組成物の−４０℃でのブルックフィールド粘度は２０００から１０，０００ｍＰａｓの間で、より典型的には４０００ｍＰａｓを超える。好ましくは、組成物の−４０℃でのブルックフィールド粘度は９０００ｍＰａｓ未満で、好ましくは８０００ｍＰａｓ未満、より好ましくは７０００ｍＰａｓ未満、さらにより好ましくは６０００ｍＰａｓ未満である。 Usually, the Brookfield viscosity at −40 ° C. of the composition is between 2000 and 10,000 mPas, more typically above 4000 mPas. Preferably, the Brookfield viscosity of the composition at −40 ° C. is less than 9000 mPas, preferably less than 8000 mPas, more preferably less than 7000 mPas, and even more preferably less than 6000 mPas.
本発明による潤滑組成物は、組成物の全重量に基づいて、１．０重量％未満のＶＩ（粘度指数）向上剤を含む。当業者は、用語「ＶＩ向上剤」が意味するものを容易に理解する。 The lubricating composition according to the invention comprises less than 1.0% by weight of VI (viscosity index) improver, based on the total weight of the composition. Those skilled in the art will readily understand what the term “VI enhancer” means.
より具体的には、本発明による潤滑組成物は、少なくとも３００の平均分子量（特にＤＩＮ５５６７２−１によるゲルパーミエーションクロマトグラフィーで測定して）の分子量を有するＶＩ（粘度指数）向上剤を１．０重量％未満含み、ポリイソアルキレン成分のオレフィンコポリマー、ポリアルキルメタクリレート、スチレンマレイン酸エステルおよびこれらの組合せからなる群から選択される。当業者は、このようなＶＩ向上剤が意味するものを容易に理解し、この点において、ポリアルキルメタクリレートなどのいくつかのＶＩ向上剤が分散性にもまた効果を持ちうることが留意される。これらのＶＩ向上剤の例の具体的な記述については、ＥＰ−Ａ−１５８３１５８が参照され、その教示は引用により本明細書に包含される。 More specifically, the lubricating composition according to the present invention has a VI (viscosity index) improver of 1.0 having an average molecular weight of at least 300 (especially measured by gel permeation chromatography according to DIN 55672-1). Contains less than% by weight and is selected from the group consisting of olefin copolymers of polyisoalkylene components, polyalkylmethacrylates, styrene maleates and combinations thereof. Those skilled in the art will readily understand what these VI improvers mean, and in this respect it is noted that some VI improvers such as polyalkylmethacrylates can also have an effect on dispersibility. . For a specific description of examples of these VI improvers, reference is made to EP-A-1583158, the teachings of which are incorporated herein by reference.
好ましくは、ＶＩ向上剤は１０００を超え、より好ましくは２５００を超え、さらにより好ましくは５０００を超える平均分子量を有する。 Preferably, the VI improver has an average molecular weight greater than 1000, more preferably greater than 2500, and even more preferably greater than 5000.
本発明の好ましい実施形態によると、組成物は、組成物の全重量に基づいて、０．５重量％未満、好ましくは０．１重量％未満、より好ましくは０．０５重量％未満のＶＩ向上剤を含み、最も好ましくはＶＩ向上剤を全く含まない。 According to a preferred embodiment of the invention, the composition has a VI improvement of less than 0.5% by weight, preferably less than 0.1% by weight, more preferably less than 0.05% by weight, based on the total weight of the composition. Agent, most preferably no VI improver at all.
さらに、組成物は、組成物の全重量に基づいて、流動点降下剤を、０．３重量％未満を含むことが好ましく、より好ましくは０．１重量％未満で、より好ましくは、流動点降下剤を全く含まない。 Further, the composition preferably comprises less than 0.3 wt% pour point depressant, more preferably less than 0.1 wt%, more preferably pour point, based on the total weight of the composition. Contains no depressant.
本発明による潤滑組成物の特に好ましい実施形態によると、ＣＥＣ−Ｌ−４５−Ａ−９９による２０時間のＫＲＬ試験で評価して、組成物は、５％未満、好ましくは２％未満で、より好ましくは１％未満、最も好ましくは０．５％未満の剪断損失を有する。ＣＥＣ−Ｌ−４５−Ａ−９９によって、伝達潤滑油（円錐ころ軸受装置により、またドイツ語の短縮形「ＫＬＲ」で表される）の粘度剪断安定度を測定する。 According to a particularly preferred embodiment of the lubricating composition according to the invention, the composition is less than 5%, preferably less than 2%, more as evaluated by a 20 hour KRL test according to CEC-L-45-A-99. Preferably it has a shear loss of less than 1%, most preferably less than 0.5%. CEC-L-45-A-99 measures the viscosity shear stability of the transmission lubricant (by the tapered roller bearing device and also represented by the German abbreviation “KLR”).
本発明による潤滑組成物は、抗酸化剤、耐摩耗性添加剤、（好ましくは無灰の）分散剤、清浄剤、極圧添加剤、摩擦改良剤、金属不活性化剤、防蝕剤、解乳化剤、消泡剤、シール適合性剤および添加剤希釈基油、などの１種以上の添加剤をさらに含む。 Lubricating compositions according to the present invention comprise antioxidants, antiwear additives, (preferably ashless) dispersants, detergents, extreme pressure additives, friction modifiers, metal deactivators, corrosion inhibitors, It further includes one or more additives such as emulsifiers, antifoams, seal compatibility agents and additive diluent base oils.
当業者は上記および他の添加剤に精通しているため、本明細書においてはさらに詳細に論じない。この種の添加剤の具体的な例は、たとえば、Ｋｉｒｋ−Ｏｔｈｍｅｒ Ｅｎｃｙｃｌｏｐｅｄｉａ ｏｆ Ｃｈｅｍｉｃａｌ Ｔｅｃｈｎｏｌｏｇｙ、第３版（１４巻）、４７７−５２６ページに述べられている。また、具体的言及は前述のＥＰ−Ａ−１５５３１５８になされており、その教示は引用により本明細書に包含される。 Those skilled in the art are familiar with these and other additives and will not be discussed in further detail herein. Specific examples of this type of additive are described, for example, in Kirk-Othmer Encyclopedia of Chemical Technology, 3rd edition (volume 14), pages 477-526. Specific reference is also made to the aforementioned EP-A-1553158, the teachings of which are incorporated herein by reference.
本発明の潤滑組成物は、基油（複数可）と１種以上の添加剤との混合により都合よく調製することができる。 The lubricating composition of the present invention can be conveniently prepared by mixing the base oil (s) with one or more additives.
前述の添加剤は、潤滑組成物の全重量に基づいて、通常、０．０１から３５．０重量％の範囲の量で、好ましくは０．０５から２５．０重量％、より好ましくは、潤滑組成物の全重量に基づいて、１．０から２０．０重量％の範囲の量、存在する。 The aforementioned additives are usually in an amount ranging from 0.01 to 35.0% by weight, preferably 0.05 to 25.0% by weight, more preferably lubrication, based on the total weight of the lubricating composition. An amount ranging from 1.0 to 20.0% by weight, based on the total weight of the composition, is present.
別の態様において、本発明は、剪断安定度（特にＣＥＣ−Ｌ−４５−Ａ−９９による）および燃費の１つ以上を改善するために、本発明（特に伝達流体としての）による潤滑組成物の使用を提供する。好ましい剪断安定度は、限定的な剪断損失（ＡＳＴＭ Ｄ４４５によって測定された動粘度１００℃における減少）をもたらす。典型的には、本発明による組成物の剪断損失は、５％未満、好ましくは２％未満、より好ましくは１．５％未満、さらに好ましくは１％未満または０．５％未満である。剪断損失は、ＡＳＴＭ Ｄ４４５準拠粘度測定で、再現性のある測定はされないのが最も好ましい。 In another aspect, the present invention provides a lubricating composition according to the present invention (especially as a transmission fluid) to improve one or more of shear stability (especially according to CEC-L-45-A-99) and fuel economy. Provide the use of. Preferred shear stability results in limited shear loss (reduction at 100 ° C. kinematic viscosity as measured by ASTM D445). Typically, the shear loss of the composition according to the invention is less than 5%, preferably less than 2%, more preferably less than 1.5%, even more preferably less than 1% or less than 0.5%. Shear loss is most preferably not measured reproducibly with ASTM D445 viscosity measurement.
本発明は以下の実施例に関して下記に述べられるが、本発明の範囲の限定を意図するものでは決してない。 The invention is described below with reference to the following examples, which are in no way intended to limit the scope of the invention.
潤滑油組成物
自動変速装置、二段クラッチ変速装置、動力分配装置、パワーステアリング装置、油圧装置などで使用される実施可能な様々な伝達流体が配合された。
Lubricating oil composition Various transmission fluids that can be used in automatic transmissions, two-stage clutch transmissions, power distribution devices, power steering devices, hydraulic devices and the like were blended.
表１および２で示すように、十分に配合された伝達流体配合物（実施例１−５および比較例１−１３）の組成物および特性を試験した。成分の量は、十分に配合された配合物の全重量に基づいて、重量％で与えられる。 As shown in Tables 1 and 2, the composition and properties of fully formulated transmission fluid formulations (Examples 1-5 and Comparative Examples 1-13) were tested. The amount of ingredients is given in weight percent based on the total weight of the fully formulated formulation.
試験した伝達流体配合物はすべて、基油（または基油混合物）、添加剤パッケージ（この添加剤パッケージは試験したすべての組成物で同じだった）および消泡剤の組合せを含んでいた。比較例１２および１３はまたＶＩ向上剤を含んでいた。 All transmission fluid formulations tested included a combination of base oil (or base oil mixture), additive package (this additive package was the same for all compositions tested) and antifoam agents. Comparative Examples 12 and 13 also contained a VI improver.
「添加剤パッケージ」は伝達流体の特別の性能向上パッケージで、摩擦改良剤、抗酸化剤、抗さび剤、抗摩耗剤、分散剤および清浄剤を含む性能改善用添加剤の組合せを含んでいた。 "Additive Package" is a special performance enhancement package for transmission fluids that included a combination of performance improvement additives including friction modifiers, antioxidants, anti-rust agents, anti-wear agents, dispersants and detergents .
「ＶＩ向上剤１」および「ＶＩ向上剤２」は通常のＶＩ向上剤で、たとえばＥｖｏｎｉｋ ＲｏｈＭａｘ Ａｄｄｉｔｉｖｅｓ ＧｍｂＨ（Ｄａｒｍｓｔａｄｔ，独国）からそれぞれ、「Ｖｉｓｃｏｐｌｅｘ１２−４１０」および「Ｖｉｓｃｏｐｌｅｘ０−０５０」の取引名称で販売されている。 “VI improver 1” and “VI improver 2” are conventional VI improvers, for example, trade names “Viscoplex 12-410” and “Viscoplex 0-050” from Evonik RohMax Additives GmbH (Darmstadt, Germany), respectively. Sold.
「基油１」は、１００℃（ＡＳＴＭ Ｄ４４５）で約４ｃＳｔ（１ｃＳｔは１ｍｍ２ｓ−１に対応する）の動粘度を有しているフィッシャー−トロプシュ由来基油（「ＧＴＬ４」）であった。 “Base oil 1” was a Fischer-Tropsch derived base oil (“GTL4”) having a kinematic viscosity of about 4 cSt (1 cSt corresponds to 1 mm 2 s −1 ) at 100 ° C. (ASTM D445). .
「基油２」は、１００℃（ＡＳＴＭ Ｄ４４５）で約５ｃＳｔの動粘度を有しているフィッシャー−トロプシュ由来基油（「ＧＴＬ５」）であった。 “Base oil 2” was a Fischer-Tropsch derived base oil (“GTL5”) having a kinematic viscosity of about 5 cSt at 100 ° C. (ASTM D445).
これらのＧＴＬ４およびＧＴＬ５基油はＩＩＩ群の要件を満たし、たとえば、国際公開第０２／０７０６３１号に記載され、その教示が引用により本明細書に包含される方法または類似する方法によって、都合よく製造することができる。 These GTL4 and GTL5 base oils meet Group III requirements and are conveniently manufactured, for example, by the methods described in WO 02/070631, the teachings of which are incorporated herein by reference or by similar methods. can do.
「基油３」および「基油４」は、市販のＩＩ群の基油であった。基油３および４は、Ｎｅｓｔｅ Ｏｉｌ Ｂ．Ｖ（Ｂｅｒｉｎｇｅｎ、ベルギー国）からそれぞれ「Ｎｅｘｂａｓｅ３０２０」および「Ｎｅｘｂａｓｅ３０３０」の取引名称で販売されている。 “Base oil 3” and “Base oil 4” were commercially available Group II base oils. Base oils 3 and 4 are from Nest Oil B.I. V (Beringen, Belgium) are sold under the trade names “Nexbase 3020” and “Nexbase 3030”, respectively.
「基油５」は市販のＩＩＩ群の基油であった。基油５は、たとえばＮｅｓｔｅ Ｏｉｌ Ｂ．Ｖ（Ｂｅｒｉｎｇｅｎ、ベルギー国）「Ｎｅｘｂａｓｅ３０４３」の取引名称で販売されている。 “Base oil 5” was a commercially available Group III base oil. The base oil 5 is, for example, Nest Oil B.I. V (Beringen, Belgium) is sold under the trade name “Nexbase 3043”.
「基油６」および「基油７」は市販のＩＩ群の基油であった。基油６および７はたとえば、ＳＫ Ｅｎｅｒｇｙ（Ｕｌｓａｎ、韓国）からそれぞれ「Ｙｕｂａｓｅ ３」および「Ｙｕｂａｓｅ３Ｌ」の取引名称で販売されている。 “Base oil 6” and “Base oil 7” were commercially available Group II base oils. Base oils 6 and 7 are sold, for example, by SK Energy (Ulsan, South Korea) under the trade names “Yubase 3” and “Yubase 3L”, respectively.
「基油８」は市販のＩＩＩ群の基油であった。基油８はたとえばＳＫ Ｅｎｅｒｇｙ（Ｕｌｓａｎ、韓国）から「Ｙｕｂａｓｅ４」の取引名称で販売されている。 “Base oil 8” was a commercially available Group III base oil. The base oil 8 is sold under the trade name “Yubase 4”, for example, by SK Energy (Ulsan, Korea).
「基油９」は市販のＩＩ群の基油であった。基油９はたとえばＳ−Ｏｉｌ Ｃｏｒｐｏｒａｔｉｏｎ（Ｏｎｓａｎ、韓国）から「Ｓ−Ｏｉｌ Ｕｌｔｒａ３」の取引名称で販売されている。 “Base oil 9” was a commercially available Group II base oil. The base oil 9 is sold, for example, under the trade name “S-Oil Ultra 3” from S-Oil Corporation (Onsan, Korea).
「基油１０」は市販のＩＩ群の基油だった。基油１０はたとえばＳ−Ｏｉｌ Ｃｏｒｐｏｒａｔｉｏｎ（Ｏｎｓａｎ、韓国）から「Ｓ−Ｏｉｌ Ｕｌｔｒａ４」の取引名称で販売されている。 “Base oil 10” was a commercially available Group II base oil. The base oil 10 is sold under the trade name “S-Oil Ultra 4” from S-Oil Corporation (Onsan, Korea), for example.
「基油１１」および「基油１２」は、市販のＩＩ群の基油だった。基油１１はたとえばＰｅｔｒｏ−Ｃａｎａｄａ（カナダ国）から「ＶＨＶＩ４」の取引名称で販売されている。基油１２はたとえばＳｈｅｌｌから「ＸＨＶＩ４．０」の取引名称で販売されている。 “Base oil 11” and “Base oil 12” were commercially available Group II base oils. Base oil 11 is sold, for example, under the trade name “VHVI4” from Petro-Canada (Canada). Base oil 12 is sold, for example, by Shell under the trade name “XHVI4.0”.
実施例１−５および比較例１−１３の組成物は、普通の潤滑油配合手順を用いて、基油を添加剤パッケージと混合することにより得られた。 The compositions of Examples 1-5 and Comparative Examples 1-13 were obtained by mixing the base oil with the additive package using conventional lubricating oil formulation procedures.
検討
表１から知ることができるように、本発明によると、驚いたことに、ＶＩ向上剤（および／または流動点降下剤）を含まずに、１００℃で少なくとも３．６ｃＳｔの動粘度および−４０℃で少なくとも１０，０００ｍＰａｓ未満のブルックフィールド粘度の厳しい条件を満たす伝達流体を配合するのが可能であることが見出された。
DISCUSSION As can be seen from Table 1, according to the present invention, surprisingly, a kinematic viscosity of at least 3.6 cSt at −100 ° C. and − without the VI improver (and / or pour point depressant) It has been found that it is possible to formulate a transmission fluid that meets the stringent requirements of Brookfield viscosity at 40 ° C. of at least less than 10,000 mPas.
表２からわかるように、比較例１−１１は、実施例１−５の配合物と同じ添加剤パッケージ、およびフィッシャー−トロプシュ由来基油の代わりにＩＩ群および／またはＩＩＩ群の鉱物性基油を含むが、ＶＩ向上剤（または流動点降下剤の目的で添加されるＶＩ向上剤）を使用しないでは、上記の厳しい要件を満たさなかった。 As can be seen from Table 2, Comparative Example 1-11 is the same additive package as the formulation of Example 1-5, and Group II and / or Group III mineral base oils instead of Fischer-Tropsch derived base oil However, if the VI improver (or VI improver added for the purpose of a pour point depressant) is not used, the above strict requirements were not met.
ＶＩ向上剤が添加された比較例１２および１３は、１００℃での動粘度および−４０℃でのブルックフィールド粘度の上記の要件を満たすが、しかし望まれないレベルの剪断損失に終わった。それと反対に、表１からわかるように、実施例２および実施例４は非常に良好な剪断安定度を示し、剪断損失は全く見出されなかった。実施例１、３および５について剪断損失データをとらなかったが、類似した良好な値が予期される。 Comparative Examples 12 and 13 with added VI improver met the above requirements for kinematic viscosity at 100 ° C. and Brookfield viscosity at −40 ° C., but ended up with an undesirable level of shear loss. On the other hand, as can be seen from Table 1, Examples 2 and 4 showed very good shear stability and no shear loss was found. Although shear loss data was not taken for Examples 1, 3, and 5, similar good values are expected.
したがって、本発明による組成物がＶＩ向上剤の存在（または少なくとも相当なより少量）を必要としない程度に、組成物の剪断安定度は改良される。流体がポンプで送り込まれる応用分野において、この改善された剪断安定度は、より高い能力ポンプによる剪断損失を過剰補償する必要性を軽減または不要にさえし、したがってコストを下げ、最終的に燃費に寄与するものを有利にする。 Thus, the shear stability of the composition is improved to the extent that the composition according to the present invention does not require the presence of (or at least a significantly smaller amount of) a VI improver. In applications where fluid is pumped, this improved shear stability reduces or even eliminates the need to overcompensate for shear losses due to higher capacity pumps, thus reducing costs and ultimately fuel efficiency. Make contributions more advantageous.
また、本発明による組成物の低い動粘度および低いブルックフィールド粘度を考慮すると、低温での運転開始とポンプ動作、および高温での動作条件に関しても望ましい燃費特性を得ることができる。 Considering the low kinematic viscosity and the low Brookfield viscosity of the composition according to the present invention, desirable fuel consumption characteristics can be obtained with respect to operation start and pump operation at low temperature and operating conditions at high temperature.
上記でわかるのは、特にＩＩ群および／またはＩＩＩ群の鉱油を用いる類似した潤滑組成物と比較したとき、本発明による組成物が改善された剪断安定度特性だけでなく同時に望ましい燃費特性をも示すことである。 It can be seen from the above that the composition according to the present invention not only has improved shear stability characteristics but at the same time desirable fuel economy characteristics, especially when compared to similar lubricating compositions using Group II and / or Group III mineral oils. Is to show.
また、本発明による組成物は、望ましい引火点特性（ＤＩＮ ＩＳＯ２５９２による）およびＮｏａｃｋ揮発性値（ＣＥＣ−Ｌ−４０−９３Ｂによる）をもたらすことが見出された。 It has also been found that compositions according to the invention provide desirable flash point properties (according to DIN ISO 2592) and Noack volatility values (according to CEC-L-40-93B).
Claims (12)
−１００℃で少なくとも３．６ｃＳｔの動粘度（ＡＳＴＭ Ｄ４４５準拠）、
−−４０℃で１０，０００ｍＰａｓ未満のブルックフィールド粘度（ＤＩＮ５１３９８準拠）
を有し、組成物の全重量に基づいて１．０重量％未満のＶＩ向上剤を含む潤滑組成物。 A lubricating composition comprising a base oil and one or more additives, wherein the base oil comprises a Fischer-Tropsch derived base oil, and an oil slip composition comprising:
A kinematic viscosity (according to ASTM D445) of at least 3.6 cSt at −100 ° C.,
-Brookfield viscosity of less than 10,000 mPas at 40 ° C (according to DIN 51398)
And a lubricating composition comprising less than 1.0% by weight of VI improver based on the total weight of the composition.
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| EP3093334A4 (en) | 2014-02-25 | 2017-12-13 | Sanyo Chemical Industries, Ltd. | Viscosity index improver and lubricating oil composition |
| CN105969555A (en) * | 2016-05-12 | 2016-09-28 | 鲁东大学 | Non-disintegrating cleaning agent for hydraulic power assisted steering system |
| WO2018174188A1 (en) | 2017-03-23 | 2018-09-27 | 三洋化成工業株式会社 | Viscosity index improver and lubricating oil composition |
| JP6895861B2 (en) * | 2017-09-28 | 2021-06-30 | シェルルブリカンツジャパン株式会社 | Lubricating oil composition for internal combustion engine |
| KR20220023351A (en) | 2019-06-26 | 2022-03-02 | 산요가세이고교 가부시키가이샤 | Viscosity Index Improver Compositions and Lubricating Oil Compositions |
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