JP2617807B2 - Engine oil composition - Google Patents

Engine oil composition

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Publication number
JP2617807B2
JP2617807B2 JP2066315A JP6631590A JP2617807B2 JP 2617807 B2 JP2617807 B2 JP 2617807B2 JP 2066315 A JP2066315 A JP 2066315A JP 6631590 A JP6631590 A JP 6631590A JP 2617807 B2 JP2617807 B2 JP 2617807B2
Authority
JP
Japan
Prior art keywords
oil
molybdenum
weight
dithiophosphate
dithiocarbamate
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 - Lifetime
Application number
JP2066315A
Other languages
Japanese (ja)
Other versions
JPH03269094A (en
Inventor
清 井上
仁一 五十嵐
光明 石丸
峰夫 加賀谷
昌邦 平田
Original Assignee
日本石油株式会社
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Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=13312276&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JP2617807(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 日本石油株式会社 filed Critical 日本石油株式会社
Priority to JP2066315A priority Critical patent/JP2617807B2/en
Priority to DE69102172T priority patent/DE69102172T2/en
Priority to EP91103711A priority patent/EP0447916B1/en
Publication of JPH03269094A publication Critical patent/JPH03269094A/en
Application granted granted Critical
Publication of JP2617807B2 publication Critical patent/JP2617807B2/en
Priority to US09/771,924 priority patent/US6627583B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 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
    • 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
    • C10M2227/06—Organic compounds derived from inorganic acids or metal salts
    • C10M2227/061—Esters derived from boron
    • 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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/02—Unspecified siloxanes; Silicones
    • 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
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • 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
    • 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
    • C10N2010/12—Groups 6 or 16
    • 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
    • C10N2040/25—Internal-combustion engines
    • 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
    • C10N2040/25—Internal-combustion engines
    • C10N2040/251—Alcohol fueled engines
    • 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
    • C10N2040/25—Internal-combustion engines
    • C10N2040/252—Diesel engines
    • 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
    • C10N2040/25—Internal-combustion engines
    • C10N2040/252—Diesel engines
    • C10N2040/253—Small diesel engines
    • 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
    • C10N2040/25—Internal-combustion engines
    • C10N2040/255—Gasoline engines
    • 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
    • C10N2040/25—Internal-combustion engines
    • C10N2040/255—Gasoline engines
    • C10N2040/28—Rotary engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明はガソリンエンジン、ディーゼルエンジンなど
の潤滑油として有用なエンジン油組成物に関するもので
ある。Description: TECHNICAL FIELD The present invention relates to an engine oil composition useful as a lubricating oil for gasoline engines, diesel engines and the like.

［従来技術］ 石油危機を契機に、省エネルギー対策が各方面で実施
される中にあって、自動車の燃費改善を図るための潤滑
油の検討が進められている。潤滑油による省燃費対策と
しては、（１）流体潤滑下における摩擦損失の低下を意
図した低粘度化、および（２）混合潤滑下および境界潤
滑下における摩擦損失の低減を意図した摩擦低減剤の添
加、などが検討されている。特に近年の優れた省燃費油
では、摩擦低減剤の添加は必須となっており、これまで
に多くの種類の化合物が開発され、成果をあげている。[Prior Art] In the wake of the oil crisis, energy saving measures are being implemented in various fields, and studies are being made on lubricating oil for improving fuel efficiency of automobiles. As fuel saving measures by lubricating oil, (1) low viscosity intended to reduce friction loss under fluid lubrication, and (2) friction reducing agent intended to reduce friction loss under mixed lubrication and boundary lubrication. Addition is being studied. In particular, in recent years of excellent fuel-saving oils, the addition of a friction reducing agent is indispensable, and many types of compounds have been developed and produced with success.

しかしながら、摩擦低減剤は、一般に、劣化を受ける
前の新油中では優れた効果を発揮するが、エンジン運転
中の劣化に伴って、省燃費効果が徐々に失われてしまう
という問題を有している。この劣化を防止するために
は、酸化防止剤がある程度有効であることが知られてい
るが、まだその効果は十分とはいえず、解決が望まれて
いた。However, the friction reducing agent generally exerts an excellent effect in the new oil before being deteriorated, but has a problem that the fuel saving effect is gradually lost with the deterioration during the operation of the engine. ing. It is known that an antioxidant is effective to some extent to prevent this deterioration, but the effect is not yet sufficient, and a solution has been desired.

［発明が解決しようとする課題］ 本発明者等はこれらの問題を解決するため研究を重ね
た結果、摩擦低減剤及び酸化防止剤を含むエンジン油に
アルカリ土類金属ホウ酸塩で過塩基化させた金属系清浄
剤を含有せしめることにより、長期にわたって優れた省
燃費効果を有することを見いだし、本発明を完成するに
至った。[Problems to be Solved by the Invention] The inventors of the present invention have conducted studies to solve these problems, and as a result, overbased on an engine oil containing a friction reducing agent and an antioxidant with an alkaline earth metal borate. The inventor has found that by incorporating the metal-based detergent thus obtained, the fuel-saving effect is excellent over a long period of time, and the present invention has been completed.

本発明は、特定の添加剤組成を有する、長期にわたっ
て省燃費効果の優れたエンジン油組成物を提供すること
を目的とする。An object of the present invention is to provide an engine oil composition having a specific additive composition and having excellent fuel-saving effects over a long period of time.

［課題を解決するための手段］ すなわち、本発明は、潤滑油基油に、組成物全量基準
で、 （ａ）アルカリ土類金属ホウ酸塩で過塩基化させた油溶
性金属塩0.01〜30重量％、 （ｂ）摩擦低減剤0.01〜５重量％および、 （ｃ）酸化防止剤0.01〜５重量％ をそれぞれ必須成分として含有せしめたことを特徴とす
るエンジン油組成物を提供するものである。[Means for Solving the Problems] That is, the present invention relates to a lubricant base oil comprising, based on the total amount of the composition, (a) 0.01 to 30 oil-soluble metal salts overbased with an alkaline earth metal borate; (B) 0.01 to 5% by weight of a friction reducing agent; and (c) 0.01 to 5% by weight of an antioxidant, respectively, as essential components. .

以下、本発明の内容を詳細に説明する。 Hereinafter, the contents of the present invention will be described in detail.

本発明における潤滑油基油としては、特に限定される
ものではなく、通常、エンジン油の基油として用いられ
ているものであれば、鉱油、合成油を問わず使用でき
る。鉱油としては、例えば原油を常圧蒸留および減圧蒸
留して得られた潤滑油留分を、溶剤脱れき、溶剤抽出、
水素化分解、溶剤脱ろう、接触脱ろう、水素化精製、硫
酸洗浄、白土処理等の精製処理を適宜組み合わせて精製
したパラフィン系、ナフテン系などの基油が使用でき
る。また、合成油としては、例えば、ポリα−オレフィ
ン（ポリブテン、１−オクテンオリゴマー、１−デセン
オリゴマーなど）、アルキルベンゼン、アルキルナフタ
レン、ジエステル（ジトリデシルグルタレート、ジ２−
エチルヘキシルアジペート、ジイソデシルアジペート、
ジトリデシルアジペート、ジ３−エチルヘキシルセバケ
ートなど）、ポリオールエステル（トリメチロールプロ
パンカプリレート、トリメチロールプロパンペラルゴネ
ート、ペンタエリスリトール２−エチルヘキサノエー
ト、ペンタエリスリトールペラルゴネートなど）、ポリ
オキシアルキレングリコール、ポリフェニルエーテル、
シリコーン油、パーフルオロアルキルエーテルなどが使
用できる。これらの基油は単独でも、２種以上組み合わ
せて使用してもよい。これらの基油の好ましい動粘度
は,100℃において３〜20cStである。The lubricating base oil in the present invention is not particularly limited, and any mineral oil or synthetic oil can be used as long as it is generally used as a base oil for engine oils. As the mineral oil, for example, lubricating oil fraction obtained by atmospheric distillation and vacuum distillation of crude oil, solvent removal, solvent extraction,
A base oil such as a paraffinic or naphthenic oil refined by appropriately combining refining treatments such as hydrocracking, solvent dewaxing, catalytic dewaxing, hydrorefining, sulfuric acid washing, and clay treatment can be used. Examples of the synthetic oil include poly-α-olefin (polybutene, 1-octene oligomer, 1-decene oligomer, etc.), alkylbenzene, alkylnaphthalene, diester (ditridecylglutarate, di2-
Ethylhexyl adipate, diisodecyl adipate,
Ditridecyl adipate, di-3-ethylhexyl sebacate, etc.), polyol esters (trimethylolpropane caprylate, trimethylolpropaneperargonate, pentaerythritol 2-ethylhexanoate, pentaerythritol pelargonate, etc.), polyoxyalkylene glycol, poly Phenyl ether,
Silicone oil, perfluoroalkyl ether and the like can be used. These base oils may be used alone or in combination of two or more. The preferred kinematic viscosity of these base oils is 3-20 cSt at 100 ° C.

本発明の（ａ）アルカリ土類金属ホウ酸塩で過塩基化
させた油溶性金属塩とは、油溶性のアルカリ土類金属ス
ルホネート、アルカリ土類金属サリシレート、アルカリ
土類金属フェネート、アルカリ土類金属ホスホネートな
どの油溶性金属塩、アルカリ土類金属水酸化物または酸
化物、ならびにホウ酸または無水ホウ酸を反応せしめて
得られるものであって、アルカリ土類金属としては、マ
グネシウム、カルシウム、バリウムなどがあげられる
が、カルシウムが好ましい。また、油溶性金属塩として
は、アルカリ土類金属サリシレートを用いるのが好まし
い。さらに、この（ａ）成分のJIS K 2501 5.2.3による
全塩基価は、100以上、好ましくは、170以上であるのが
望ましく、粒径は0.1μｍ以下、好ましくは0.05μｍ以
下であるのが望ましい。この（ａ）アルカリ土類金属ホ
ウ酸塩で過塩基化させた油溶性金属塩の製造法は任意で
あるが、例えば、上記油溶性金属塩、アルカリ土類金属
水酸化物または酸化物，ならびにホウ酸または無水ホウ
酸を水、メタノール、エタノール、プロパノール、ブタ
ノールなどのアルコール及びベンゼン、トルエン、キシ
レンなどの希釈溶剤の存在下で20〜200℃で２〜８時間
反応させ、つぎに100〜200℃に加熱して水および必要に
応じてアルコールおよび希釈溶剤を除去することにより
得られる。これらの詳細な反応条件は、原料、反応物の
量などに応じて適宜選択される。なお、製造法の詳細に
ついては、例えば特開昭60−116688号公報、同61−2042
98号公報などに記載されている。上記方法で製造された
（ａ）アルカリ土類金属ホウ酸塩で過塩基化させた油溶
性金属塩の粒径は通常0.1μｍ以下、全塩基価は通常100
以上となるので、好ましく用いられる。The (a) oil-soluble metal salt overbased with an alkaline earth metal borate according to the present invention refers to an oil-soluble alkaline earth metal sulfonate, alkaline earth metal salicylate, alkaline earth metal phenate, alkaline earth metal These are obtained by reacting oil-soluble metal salts such as metal phosphonates, alkaline earth metal hydroxides or oxides, and boric acid or boric anhydride. Examples of alkaline earth metals include magnesium, calcium, barium Etc., but calcium is preferred. As the oil-soluble metal salt, it is preferable to use an alkaline earth metal salicylate. Further, the total base number of this component (a) according to JIS K 2501 5.2.3 is preferably 100 or more, preferably 170 or more, and the particle size is 0.1 μm or less, preferably 0.05 μm or less. desirable. The method for producing the (a) oil-soluble metal salt overbased with an alkaline earth metal borate is optional. For example, the above oil-soluble metal salt, alkaline earth metal hydroxide or oxide, and Boric acid or boric anhydride is reacted at 20 to 200 ° C. for 2 to 8 hours in the presence of water, alcohols such as methanol, ethanol, propanol and butanol and diluting solvents such as benzene, toluene and xylene, and then 100 to 200 It is obtained by heating to ° C. to remove water and, if necessary, alcohol and diluting solvent. These detailed reaction conditions are appropriately selected according to the raw materials, the amount of the reactants, and the like. For details of the production method, see, for example, JP-A-60-116688 and JP-A-61-2042.
No. 98, etc. The particle size of (a) the oil-soluble metal salt overbased with the alkaline earth metal borate produced by the above method is usually 0.1 μm or less, and the total base number is usually 100 μm.
As described above, it is preferably used.

この（ａ）アルカリ土類金属ホウ酸塩で過塩基化させ
た油溶性金属塩の含有量は、組成物全量基準で0.01〜30
重量％、好ましくは0.05〜５重量％である。含有量が0.
01重量％に満たない場合には、省燃費効果が短期間しか
持続せず、30重量％を越える場合には、含有量に見合っ
た効果が得られず、それぞれ好ましくない。また、
（ａ）成分を用いず、かわりに、その他の金属塩、例え
ばアルカリ土類金属炭酸塩で過塩基化させた油溶性金属
塩を用いた場合も、省燃費効果が短期間しか持続しない
ので好ましくない。The content of the (a) oil-soluble metal salt overbased with an alkaline earth metal borate is 0.01 to 30 based on the total amount of the composition.
%, Preferably 0.05 to 5% by weight. Content is 0.
When the amount is less than 01% by weight, the fuel-saving effect is maintained only for a short period of time, and when it exceeds 30% by weight, the effect corresponding to the content cannot be obtained, which is not preferable. Also,
It is also preferable to use an oil-soluble metal salt overbased with another metal salt, for example, an alkaline earth metal carbonate, instead of using the component (a), since the fuel saving effect lasts only for a short period of time. Absent.

本発明の（ｂ）摩擦低減剤としては、一般にエンジン
油に使用されているものであれば何を用いても支障はな
い。例えば、モリブデンジチオホスフェート、モリブデ
ンジチオカーバメート、二硫化モリブデン、フッ化カー
ボン、ほう酸エステル、脂肪族アミン、高級アルコー
ル、高級脂肪酸、脂肪エステル、脂肪酸アミドなどが挙
げられる。As the friction reducing agent (b) of the present invention, any material can be used as long as it is generally used in engine oil. For example, molybdenum dithiophosphate, molybdenum dithiocarbamate, molybdenum disulfide, carbon fluoride, borate ester, aliphatic amine, higher alcohol, higher fatty acid, fatty ester, fatty acid amide and the like can be mentioned.

さらに具体的には、硫化モリブデンジエチルジチオホ
スフェート、硫化モリブデンジプロピルジチオホスフェ
ート、硫化モリブデンジブチルジチオホスフェート、硫
化モリブデンジペンチルジチオホスフェート、硫化モリ
ブデンジヘキシルジチオホスフェート、硫化モリブデン
ジオクチルジチオホスフェート、硫化モリブデンジデシ
ルジチオホスフェート、硫化モリブデンジドデシルジチ
オホスフェート、硫化モリブデンジ（ブチルフェニル）
ジチオホスフェート、硫化モリブデンジ（ノニルフェニ
ル）ジチオホスフェート、硫化オキシモリブデンジエチ
ルジチオホスフェート、硫化オキシモリブデンジプロピ
ルジチオホスフェート、硫化オキシモリブデンジブチル
ジチオホスフェート、硫化オキシモリブデンジペンチル
ジチオホスフェート、硫化オキシモリブデンジヘキシル
ジチオホスフェート、硫化オキシモリブデンジオクチル
ジチオホスフェート、硫化オキシモリブデンジデシルジ
チオホスフェート、硫化オキシモリブデンジドデシルジ
チオホスフェート、硫化オキシモリブデンジ（ブチルフ
ェニル）ジチオホスフェート、硫化オキシモリブデンジ
（ノニルフェニル）ジチオホスフェート、硫化モリブデ
ンジエチルジチオカーバメート、硫化モリブデンジプロ
ピルジチオカーバメート、硫化モリブデンジブチルジチ
オカーバメート、硫化モリブデンジペンチルジチオカー
バメート、硫化モリブデンジヘキシルジチオカーバメー
ト、硫化モリブデンジオクチルジチオカーバメート、硫
化モリブデンジデシルジチオカーバメート、硫化モリブ
デンジドデシルジチオカーバメート、硫化モリブデンジ
（ブチルフェニル）ジチオカーバメート、硫化モリブデ
ンジ（ノニルフェニル）ジチオカーバメート、硫化オキ
シモリブデンジエチルジチオカーバメート、硫化オキシ
モリブデンジプロピルジチオカーバメート、硫化オキシ
モリブデンジブチルジチオカーバメート、硫化オキシモ
リブデンジペンチルジチオカーバメート、硫化オキシモ
リブデンジヘキシルジチオカーバメート、硫化オキシモ
リブデンジオクチルジチオカーバメート、硫化オキシモ
リブデンジデシルジチオカーバメート、硫化オキシモリ
ブデンドデシルジチオカーバメート、硫化オキシモリブ
デンジ（ブチルフェニル）ジチオカーバメート、硫化オ
キシモリブデンジ（ノニルフェニル）ジチオカーバメー
ト、ラウリルアミン、ミリスチルアミン、パルミチルア
ミン、ステアリルアミン、オレイルアミン、ラウリルア
ルコール、ミリスチルアルコール、パルミチルアルコー
ル、ステアリルアルコール、オレイルアルコール、ラウ
リン酸、ミリスチン酸、パルミチン酸、ステアリン酸、
オレイン酸、ラウリン酸メチル、ミリスチン酸メチル、
パルミチン酸メチル、ステアリン酸メチル、オレイン酸
メチル、ラウリルアミド、ミリスチルアミド、パルミチ
ルアミド、ステアリルアミド、オレイルアミドなどが好
ましく用いられる。この（ｂ）摩擦低減剤の含有量は、
組成物全量基準で、0.01〜５重量％、好ましくは0.05〜
２重量％である。含有量が0.01重量％に満たない場合に
は、摩擦低減効果がなく、５重量％を越える場合には、
含有量に見合った効果が得られず、それぞれ好ましくな
い。More specifically, molybdenum sulfide diethyl dithiophosphate, molybdenum dipropyl dithiophosphate, molybdenum dibutyl dithiophosphate, molybdenum dipentyl dithiophosphate, molybdenum dihexyl dithiophosphate, molybdenum dioctyl dithiophosphate, molybdenum didecyl dithiophosphate, molybdenum sulfide, molybdenum sulfide Dodecyl dithiophosphate, molybdenum sulfide (butylphenyl)
Dithiophosphate, molybdenum sulfide (nonylphenyl) dithiophosphate, oxymolybdenum sulfide diethyl dithiophosphate, oxymolybdenum dipropyl dithiophosphate, oxymolybdenum dibutyl dithiophosphate, oxymolybdenum dipentyl dithiophosphate, oxymolybdenum dihexyl dithiophosphate, oxymolybdenum sulfide Dioctyl dithiophosphate, oxymolybdenum didecyl dithiophosphate sulfide, oxymolybdenum didodecyl dithiophosphate sulfide, oxymolybdenum di (butylphenyl) dithiophosphate, oxymolybdenum di (nonylphenyl) dithiophosphate, molybdenum diethyl dithiocarbamate, molybdenum dipropyl dithiocarbamate , Molybdenum dibutyl dithiocarbamate, molybdenum dipentyl dithiocarbamate, molybdenum dihexyl dithiocarbamate, molybdenum dioctyl dithiocarbamate, molybdenum didecyl dithiocarbamate, molybdenum didodecyl dithiocarbamate, molybdenum di (butylphenyl) molybdenum dithiocarbamate (Nonylphenyl) dithiocarbamate, oxymolybdenum sulfide diethyl dithiocarbamate, oxymolybdenum dipropyl dithiocarbamate, oxymolybdenum dibutyl dithiocarbamate, oxymolybdenum dipentyl dithiocarbamate, oxymolybdenum dihexyl dithiocarbamate, oxymolybdenum dioctyl dithiocarbamate G, oxymolybdenum didecyl dithiocarbamate sulfide, oxymolybdenum decyl dithiocarbamate sulfide, oxymolybdenum di (butylphenyl) dithiocarbamate, oxymolybdenum sulfide (nonylphenyl) dithiocarbamate, laurylamine, myristylamine, palmitylamine, stearylamine, oleylamine , Lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, oleyl alcohol, lauric acid, myristic acid, palmitic acid, stearic acid,
Oleic acid, methyl laurate, methyl myristate,
Methyl palmitate, methyl stearate, methyl oleate, laurylamide, myristylamide, palmitylamide, stearylamide, oleylamide and the like are preferably used. The content of the (b) friction reducing agent is as follows:
0.01 to 5% by weight, preferably 0.05 to 5% by weight, based on the total amount of the composition
2% by weight. When the content is less than 0.01% by weight, there is no friction reducing effect, and when the content exceeds 5% by weight,
An effect commensurate with the content cannot be obtained, which is not preferred.

本発明の（ｃ）酸化防止剤としては、一般にエンジン
油に使用されているものであれば何を用いても支障はな
い。例えば、フェノール系、アミン系、硫黄系、チオリ
ン酸亜鉛系、フェノチアジン系のものなどが用いられ
る。さらに具体的には、ジフェニルアミン、p,p′−ジ
オクチルジフェニルアミン、p,p′−ジノニルジフェニ
ルアミン、p,p′−ジドデシルジフェニルアミン、フェ
ニル−α−ナフチルアミン、ｐ−オクチルフェニル−α
−ナフチルアミン、ｐ−ノニルフェニル−α−ナフチル
アミン、ｐ−ドデシルフェニル−α−ナフチルアミン、
2,6−ジ−ｔ−ブチルフェノール、2,6−ジ−ｔ−ブチル
−ｐ−クレゾール、2,6−ジ−ｔ−ブチル−４−エチル
フェノール、2,2′−メチレンビス（４−メチル−６−
ｔ−ブチルフェノール）、2,2′−メチレンビス（４−
エチル−６−ｔ−ブチルフェノール）、4,4′−メチレ
ンビス（2,6−ジ−ｔ−ブチルフェノール）、4,4′−ビ
ス（2,6−ジ−ｔ−ブチルフェノール）、4,4′−チオビ
ス（６−ｔ−ブチル−ｏ−クレゾール）、ジアルキルジ
チオリン酸亜鉛、フェノチアジン及びこれらの混合物な
どが挙げられる。この（ｃ）酸化防止剤の含有量は、組
成物全量基準で、0.01〜５重量％、好ましくは0.1〜２
重量％である。含有量が0.01重量％に満たない場合に
は、省燃費効果が短期間しか持続せず、５重量％を越え
る場合には、含有量に見合った効果が得られず、それぞ
れ好ましくない。As the antioxidant (c) of the present invention, any one can be used as long as it is generally used in engine oils. For example, phenol-based, amine-based, sulfur-based, zinc thiophosphate-based, and phenothiazine-based ones are used. More specifically, diphenylamine, p, p'-dioctyldiphenylamine, p, p'-dinonyldiphenylamine, p, p'-didodecyldiphenylamine, phenyl-α-naphthylamine, p-octylphenyl-α
-Naphthylamine, p-nonylphenyl-α-naphthylamine, p-dodecylphenyl-α-naphthylamine,
2,6-di-t-butylphenol, 2,6-di-t-butyl-p-cresol, 2,6-di-t-butyl-4-ethylphenol, 2,2'-methylenebis (4-methyl- 6-
t-butylphenol), 2,2'-methylenebis (4-
Ethyl-6-t-butylphenol), 4,4'-methylenebis (2,6-di-t-butylphenol), 4,4'-bis (2,6-di-t-butylphenol), 4,4'- And thiobis (6-t-butyl-o-cresol), zinc dialkyldithiophosphate, phenothiazine, and mixtures thereof. The content of the (c) antioxidant is 0.01 to 5% by weight, preferably 0.1 to 2% by weight, based on the total amount of the composition.
% By weight. When the content is less than 0.01% by weight, the fuel-saving effect is maintained for a short period of time, and when it exceeds 5% by weight, the effect corresponding to the content cannot be obtained, which is not preferable.

本発明のエンジン油組成物に対して、さらにその優れ
た性能を高めるため、必要に応じて公知の添加剤を使用
することができる。この添加剤としては例えば、トリク
レジルホスフェート、トリフェニルホスフェート、ジチ
オリン酸亜鉛などの極圧剤、石油スルホネート、ジノニ
ルナフタレンスルホネートなどの錆止め剤、ベンゾトリ
アゾールなどの金属不活性化剤、アルカリ土類金属スル
ホネート、アルカリ土類金属フェネート、アルカリ土類
金属サリシレート、アルカリ土類金属ホスホネートなど
の金属系清浄剤、こはく酸イミド、こはく酸エステル、
ベンジルアミンなどの無灰分散剤、シリコーンなどの消
泡剤、ポリメタクリレート、ポリイソブチレン、ポリス
チレンなどの粘度指数向上剤、流動点降下剤などが挙げ
られ、これらを単独または２種以上組み合わせて添加す
ることができる。粘度指数向上剤の含有量は通常１〜30
重量％、消泡剤の含有量は通常0.0005〜１重量％、金属
不活性化剤の含有量は通常0.005〜１重量％、その他の
添加剤の含有量は、それぞれ通常0.1〜15重量％（いず
れも組成物全量基準）である。In order to further enhance the excellent performance of the engine oil composition of the present invention, known additives can be used as needed. Examples of the additive include extreme pressure agents such as tricresyl phosphate, triphenyl phosphate and zinc dithiophosphate, rust inhibitors such as petroleum sulfonate and dinonylnaphthalene sulfonate, metal deactivators such as benzotriazole, and alkaline earths. Metal detergents such as metal sulfonates, alkaline earth metal phenates, alkaline earth metal salicylates, alkaline earth metal phosphonates, succinimides, succinates,
Examples include ashless dispersants such as benzylamine, defoamers such as silicone, viscosity index improvers such as polymethacrylate, polyisobutylene, and polystyrene, and pour point depressants. These may be added alone or in combination of two or more. Can be. The content of the viscosity index improver is usually from 1 to 30.
%, The content of the defoamer is usually 0.0005 to 1% by weight, the content of the metal deactivator is usually 0.005 to 1% by weight, and the content of other additives is usually 0.1 to 15% by weight ( All are based on the total amount of the composition).

本発明のエンジン油組成物は、２輪車、４輪車等のガ
ソリンエンジン、陸用ディーゼルエンジン、舶用ディー
ゼルエンジンなどの潤滑油として好ましく使用できる。The engine oil composition of the present invention can be preferably used as a lubricating oil for gasoline engines such as motorcycles and four-wheeled vehicles, land-based diesel engines, marine diesel engines, and the like.

［実施例］ 以下、本発明の内容を実施例および比較例によりさら
に具体的に説明するが、本発明はこれらの実施例に何等
限定されるものではない。EXAMPLES Hereinafter, the content of the present invention will be described more specifically with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples.

実施例および比較例 実施例および比較例に用いたエンジン油組成物の組成
を表に示した。これらのエンジン油の性能を以下に示す
性能評価試験により評価した。Examples and Comparative Examples The compositions of the engine oil compositions used in the examples and comparative examples are shown in the table. The performance of these engine oils was evaluated by a performance evaluation test shown below.

（LFW摩擦試験） 試料油の新油および酸化劣化油のLFW摩擦試験を行っ
た。条件は、荷重301b、回転数1500rpm、油温80℃とし
た。なお、酸化劣化油としては、JIS K 2514 3.1に規定
される潤滑油酸化安定度試験に準拠し、試験温度150
℃、72時間の条件で酸化劣化させた油を用いた。(LFW friction test) An LFW friction test was performed on a new sample oil and an oxidatively degraded oil. The conditions were a load of 301b, a rotation speed of 1500 rpm, and an oil temperature of 80 ° C. The oxidatively degraded oil is based on the lubricating oil oxidation stability test specified in JIS K 2514 3.1, and has a test temperature of 150.
An oil that had been oxidatively degraded at a temperature of 72 ° C for 72 hours was used.

［発明の効果］ 表に示す結果から明かなように、本発明のエンジン油
は、各成分の相乗効果により、酸化劣化後も摩擦係数が
変化せず、優れた省燃費効果が長期間持続することがわ
かる。一方、（ａ）成分のかわりに炭酸カルシウムで過
塩基化させた油溶性金属塩を用いたもの（比較例１）お
よび（ｃ）成分を用いないもの（比較例２）は、いずれ
も酸化劣化後に摩擦係数が増大し、省燃費効果の持続期
間が本発明品に比べて短いことが明らかである。 [Effects of the Invention] As is clear from the results shown in the table, the engine oil of the present invention does not change its friction coefficient even after oxidative deterioration due to the synergistic effect of each component, and has an excellent fuel saving effect for a long time. You can see that. On the other hand, those using the oil-soluble metal salt overbased with calcium carbonate instead of the component (a) (Comparative Example 1) and those not using the component (c) (Comparative Example 2) were all oxidatively degraded. It is clear that the coefficient of friction increases later, and the duration of the fuel-saving effect is shorter than that of the product of the present invention.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ１０Ｍ 125:10） (Ｃ１０Ｍ 163/00 159:20 129:10 133:12） Ｃ１０Ｎ 10:04 30:04 30:06 30:10 40:25 60:14 (72)発明者 加賀谷 峰夫 神奈川県横浜市中区千鳥町８番地 日本 石油株式会社中央技術研究所内 (72)発明者 平田 昌邦 神奈川県横浜市中区千鳥町８番地 日本 石油株式会社中央技術研究所内 (56)参考文献 特開 昭62−240388（ＪＰ，Ａ) 特開 昭59−122597（ＪＰ，Ａ) 特開 平２−503929（ＪＰ，Ａ)──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification number Office reference number FI Technical display location C10M 125: 10) (C10M 163/00 159: 20 129: 10 133: 12) C10N 10:04 30 : 04 30:06 30:10 40:25 60:14 (72) Inventor Mineo Kagaya 8 Chidori-cho, Naka-ku, Yokohama-shi, Kanagawa Japan Petroleum Corporation Central Technology Research Institute (72) Inventor Masakuni Hirata Yokohama-shi, Kanagawa 8, Chidori-cho, Naka-ku, Japan The Central Research Laboratory of Petroleum Corporation (56) References JP-A-62-240388 (JP, A) JP-A-59-122597 (JP, A) JP-A-2-503929 (JP, A A)

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】潤滑油基油に、組成物全量基準で、 （ａ）アルカリ土類金属ホウ酸塩で過塩基化させた油溶
性金属塩0.01〜30重量％、 （ｂ）摩擦低減剤0.01〜５重量％および、 （ｃ）酸化防止剤0.01〜５重量％ をそれぞれ必須成分として含有せしめたことを特徴とす
るエンジン油組成物。(1) 0.01 to 30% by weight of an oil-soluble metal salt overbased with an alkaline earth metal borate in a lubricating base oil, based on the total amount of the composition; An engine oil composition comprising, as essential components, 1 to 5% by weight and (c) 0.01 to 5% by weight of an antioxidant.
JP2066315A 1990-03-16 1990-03-16 Engine oil composition Expired - Lifetime JP2617807B2 (en)

Priority Applications (4)

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JP2066315A JP2617807B2 (en) 1990-03-16 1990-03-16 Engine oil composition
DE69102172T DE69102172T2 (en) 1990-03-16 1991-03-11 Engine oil composition.
EP91103711A EP0447916B1 (en) 1990-03-16 1991-03-11 Engine oil composition
US09/771,924 US6627583B2 (en) 1990-03-16 2001-01-30 Engine oil composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2066315A JP2617807B2 (en) 1990-03-16 1990-03-16 Engine oil composition

Publications (2)

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JPH03269094A JPH03269094A (en) 1991-11-29
JP2617807B2 true JP2617807B2 (en) 1997-06-04

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JPH03269094A (en) 1991-11-29
DE69102172T2 (en) 1994-09-22
EP0447916B1 (en) 1994-06-01
EP0447916A1 (en) 1991-09-25

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