201002814 六、發明說明： 【發明所屬之技術領域】 本發明係關於潤滑油組成物，更詳細係關於内燃機等 塡充潤滑油之機械裝置運作時，抑制噪音產生、同時能賦 予省燃費性之潤滑油組成物。 【先前技術】 近年，因世界規模之汽車或產業機械類之製造與使用 急速增加，隨之，所消耗之石油等之能源增加。因此，能 源使用造成的大氣污染日益嚴重，成爲重大問題。 爲防止如此之大氣污染，需要降低大氣污染主要來源 之由汽車等排出之廢氣，將其以潤滑油之觀點來實現的方 法，要求以潤滑油來實現省燃費。 然而，潤滑油，例如，内燃機用潤滑油（引擎油）之 省燃費方法，爲降低引擎油造成之摩擦損失（攪拌阻力） ，已知降低其黏度（低黏度化）爲有效（例如，專利文獻 1作參照）。 然而，使用低黏度基油等、單純僅將潤滑油低黏度化 ，有招致引擎之噪音或振動變大之問題。該噪音或振動作 爲噪音振動公害，成爲對生活環境賦予極大負面影響之原 因。 因此，關於省燃費用潤滑油，期望使潤滑油低黏度化 、具省燃費性，同時可抑制噪音•振動之產生的潤滑油組 成物之開發。 -5- 201002814 [專利文獻1]特開2004 — 1 3 73 1 7號公報 【發明內容】 [發明所欲解決之課題] 本發明爲在此狀況下，以提供具優異省燃費性，同時 可抑制噪音•振動之產生的潤滑油組成物爲目的者。 [解決課題之手段] 本發明者努力硏究開發具前述較佳性質之潤滑油組成 物之結果，發現使用特定基油，同時搭配皆具有特定分子 量之乙烯- α -烯烴共聚合物及/或聚甲基丙烯酸酯，調 整爲特定動黏度之組成物可達成該目的。本發明係基於相 關知識而完成者。亦即，本發明爲提供： 〔1〕使用100°c時的動黏度爲3_5〜10mm2 / S且黏度 指數在1 00以上的潤滑油基油，且搭配（a )數平均分子量 爲2,500〜25,000的乙烯一α —烯烴共聚合物及/或（b) 數平均分子量爲10,〇〇〇〜30,000的聚甲基丙烯酸酯而成之 潤滑油組成物，而組成物之1 0 (TC時的動黏度爲5.6〜 15.0mm2/ s之潤滑油組成物， 〔2〕前述潤滑油組成物之1 〇 〇°c時的動黏度爲5.6〜 12.5mm2/ s之前述〔1〕所記載之潤滑油組成物， 〔3〕前述潤滑油基油之i〇〇°C動黏度爲3.5〜6mm2/s 之前述〔1〕或〔2〕所記載之潤滑油組成物， 〔4〕進而含有由抗氧化劑、極壓劑、耐磨損劑、油 -6 - 201002814 性劑、清淨分散劑、黏度指數提升劑'及流動點下降劑中 選出之至少一種的添加劑之前述〔1〕或〔2〕所記載之潤 滑油組成物， 〔5〕用於内燃機之前述〔1〕或〔2〕所記載之潤滑 油組成物者。 [發明效果] 根據本發明，可提供具優異省燃費性，同時可抑制噪 音•振動之產生的潤滑油組成物。 [實施發明之最佳形態] 本發明之潤滑油組成物所用之基油需要使用1 00 °c時 的動黏度爲3.5〜10mm2/s且黏度指數在100以上之基油。 lOOt時的動黏度未達3.5 mm2/ s則有無法充分防止噪 音或振動之產生的情況，超過1 0mm2 / s，則有妨礙省燃費 性能之虞。因此，l〇〇°C時的動黏度以3.5〜6mm2/s較佳 〇 又，本發明所用之基油，黏度指數需在1 〇〇以上。若 黏度指數在1 00以上，則因組成物之低溫黏度降低而省燃 費，同時因可抑制在更高溫之黏度降低，可提高抑制噪音 或振動之效果。 因此，基油之黏度指數以1 10以上爲佳，120以上更佳 本發明所用之基油，進而硫分以1000質量ppm以下爲 201002814 佳，500質量ppm以下更佳。硫分若在1 000質量ppm以内， 則可提高組成物之安定性。 本發明之潤滑油組成物中之基油在滿足上述之條件下 ，並無特別限制，可使用一般潤滑油所使用之礦油及/或 合成油。 礦油基油方面，例如將原油進行常壓蒸餾餾分、或將 常壓蒸餾後所得之常壓殘油進行減壓蒸餾而得之潤滑油餾 分，以進行一種以上之溶劑脫瀝青、溶劑萃取、氫化分解 、氫化脫蠟、溶劑脫蠟、氫化精製等處理所精製者、或礦 油系蠟或經費希爾-特普希製程等製造之蠟（gas-to-liquid wax )進行異性化所製造之基油等。 另外，合成油基油可舉例如聚丁烯或其氫化物、1 -癸烯寡聚物等聚α-烯烴或其氫化物、二-2 -乙基己基己 二酸酯、二一 2 -乙基己基癸二酸酯等二酯、三羥甲基丙 烷辛酸酯、季戊四醇- 2 -乙基已酸酯等多元醇酯、烷基 苯、烷基萘等芳香族系合成油、聚烷二醇或其衍生物等。 在本發明，基油可使用礦油基油、合成油基油或此等 之中所選出之2種以上任意混合物等。例如，1種以上的礦 油基油、1種以上的合成油基油、1種以上的礦油基油與1 種以上的合成油基油之混合油等。特別係以使用進行包含 氫化分解處理之精製所得之礦油基油或該基油與1-癸烯 寡聚物等之聚α -烯烴的氫化物之混合物爲佳。 在本發明，基油可使用礦油基油、合成油基油或由此 等之中所選出之2種以上的任意混合物。 -8 - 201002814 在本發明中，（a)成分係使用數平均分子量爲2,500 〜25,000的乙烯一 α -烯烴共聚合物。 在此，數平均分子量未達2,500者’抑制噪音或振動 之效果不足，又，超過25,〇〇〇者’剪斷安定性降低、難以 安定維持效果。考量噪音或振動之抑制及剪斷安定性等’ 則該乙烯- α-烯烴共聚合物之較佳數平均分子量在2,500 〜5,000的範圍。 又，該乙烯一 α —烯烴共聚合物所用之α—烯烴’以碳 數3〜20的α-烯烴爲佳，例如丙烯，1— 丁烯，1一癸烯等 爲佳。又，乙烯與α—烯烴之比以1: 9〜9: 1 (質量比） 之範圍爲佳。 該（a)成分之乙烯一 α -烯烴共聚合物可使用一種、 或二種以上組合使用。 又，其搭配量，通常基於組成物總量，在〇 · 1〜2 0質 量％之範圍來選擇。其量若在〇· 1質量％以上，則可得抑制 噪音或振動之效果，若爲2 0質量％以下，則無低溫時黏度 變高之問題且剪斷安定性亦良好，可安定地維持該效果。 在本發明中，（b)成分係使用數平均分子量爲 10,000〜30,〇〇〇的聚甲基丙烯酸酯。聚甲基丙烯酸酯可爲 非分散型、或分散型。 在此’數平均分子量爲未達1 0,000者，抑制噪音或振 動之效果不足’又，超過30,000者，其剪斷安定性降低， 難以安定維持效果。考量噪音或振動之抑制及剪斷安定性 等，則該聚甲基丙烯酸酯之較佳數平均分子量在15, 〇〇〇〜 201002814 25,000的範圍。 該（b)成分之聚甲基丙烯酸酯可使用一種或二種以 上組合使用。 又，其搭配量以滿足本發明組成物之1 0 0 °C時的動黏 度之條件之方式選擇即可，通常，基於組成物總量’在 0 _ 1〜1 0質量％之範圍來選擇。其量若在〇 · 1質量％以上’則 可獲得省燃費效果、以及抑制噪音或振動之效果’若在10 質量％以下，則無低溫時黏度變過高之問題，剪斷安定性 亦良好，可安定地維持該效果。 本發明如上述，爲於基油中搭配（a)成分及/或（b )成分而獲得之組成物，進一步，因應使用目的可於潤滑 油中使用通常搭配之各種添加劑。 例如，以搭配選自抗氧化劑、極壓劑、耐磨損劑、油 性劑、清淨分散劑、（a ) ， （ b )以外其他黏度指數提升 劑、及流動點下降劑之至少一種的添加劑爲佳。 抗氧化劑，搭配酚系抗氧化劑及/或胺系抗氧化劑。 前述酚系抗氧化劑可由用作習知潤滑油之抗氧化劑之 公知粉系抗氧化劑中，任意選擇適宜者使用。該酚系抗氧 化劑’例如以2,6-二一 tert — 丁基—4 一甲基酚；2,6-二 一 tert — 丁基一 4一 乙基酚：2,4,6 —三一tert — 丁基酚；2,6 一二一 tert — 丁基一 4一 羥基甲基酚；2,6 —二—tert — 丁基 酣 ’ 2,4 ——甲基—6— tert — 丁 基酣；2,6-二—tert — 丁基 一 4- (N，N-二甲基胺基甲基）酚；2,6一二一 tert—戊基 一 4 —甲基酚；4,4, 一亞甲基雙（2,6 —二一 tert _ 丁基酚） -10- 201002814 、4,4’_ 雙（2,6 -二一 tert- 丁基酚）、4,4’一 雙（2- 甲 基一 6 - tert _ 丁基酚）、2,2’一亞甲基雙（4_乙基一 6-tert_ 丁基酚）、2,2’一亞甲基雙（4 —甲基一 6 — tert—丁 基酚）、4,4’—亞丁基雙（3 -甲基一 6_ tert _ 丁基酚）、 4,4’ —異亞丙基雙（2,6 —二—tert — 丁基酚）、2,2’ 一亞 甲基雙（4_甲基一 6—壬基酚）、2,2’ 一異亞丁基雙（4,6 一二甲基酚）、2,2’ 一亞甲基雙（4 一甲基一 6 —環己基酚 )、2,4 一 二甲基—6— tert- 丁 基酚、4,4’ 一 硫代雙（2 -甲基一6-'^以一丁基酚）、4,4’—硫代雙（3—甲基—6-tert — 丁基酚）、2,2’ 一 硫代雙（4 一甲基 _6— tert-丁基 酚）、雙（3—甲基一 4 —羥基一 5 — tert-丁基苄基）硫化 物、雙（3,5 —二一 tert — 丁基一 4 —羥基苄基）硫化物、 2,2’-硫代一二乙烯雙〔3_(3,5—二_41^—丁基一4一 羥基苯基）丙酸酯〕、十三烷基一 3— (3,5 —二—tert - 丁基—4 -羥基苯基）丙酸酯、季戊四醇一肆〔3 -（3,5 一二_ tert — 丁基一 4一羥基苯基）丙酸酯〕、辛基一 3 -(3,5 _二一 tert - 丁基一 4一羥基苯基）丙酸酯、十八烷 基一 3 —（ 3,5 -二—tert—丁基一 4一羥基苯基）丙酸酯、 辛基一3— (3 —甲基一 5_tert_ 丁基一4 一羥基苯基）丙 酸醋等爲佳。 另外，胺系抗氧化劑，可由用作習知潤滑油之抗氧化 劑之公知胺系抗氧化劑中適宜選擇任意者來使用。該胺系 抗氧化劑，例如二苯基胺系之者、具體如二苯基胺或單辛 基二苯基胺；單壬基二苯基胺；4,4’ -二丁基二苯基胺； -11 - 201002814 4,4’—二己基二苯基胺；4,4’—二辛基二苯基胺；4,4’一二 壬基二苯基胺；四丁基二苯基胺；四己基二苯基胺；四辛 基二苯基胺：四壬基二苯基胺等碳數3〜20的具烷基之烷 基化二苯基胺等、及萘基胺系之者、具體如α -萘基胺； 苯基-α —萘基胺、進而爲丁基苯基- α -萘基胺；己基 苯基_ ct 一萘基胺；辛基苯基一 α —萘基胺；壬基苯基一 α -萘基胺等碳數3〜20的烷基取代苯基-α -萘基胺等 。此等之中，相較於萘基胺系，二苯基胺系之效果佳，特 別以碳數3〜20的具烷基之烷基化二苯基胺、尤以4,4’ -二 (C3〜C2g院基）二苯基胺爲佳。 在本發明中，前述酚系抗氧化劑可使用1種、或2種以 上組合使用。又，前述胺系抗氧化劑可使用1種、或2種以 上組合使用。進而，可組合酚系抗氧化劑1種以上與胺系 抗氧化劑1種以上使用。 前述抗氧化劑之搭配量，由效果及經濟性之均衡等之 觀點來看，基於潤滑油組成物總量，較佳爲0.0 5〜3質量％ 、更佳爲0.2〜2質量％之範圍來選擇。 極壓劑、耐磨損劑，如二硫代磷酸鋅、二硫代氨基甲 酸鋅（dithiocarbamic acid )、二硫化物類、硫化煤烴類 、硫化油脂類、硫化酯類、硫代碳酸酯類、硫代胺基甲酸 酯（thiocarbamate )類等含硫防磨損劑；亞磷酸酯類、磷 酸酯類、膦酸酯類及此等之胺鹽或金屬鹽等含磷防磨損劑 :硫代亞磷酸酯類、硫代磷酸酯類、硫代膦酸酯類及此等 之胺鹽或金屬鹽等含硫及磷防磨損劑。 -12- 201002814 油性劑（摩擦調整劑），可使用用作潤滑油用摩擦調 整劑通常使用之任意化合物，例如，碳數6〜30的烷基或 烯基、尤其係碳數6〜30的於分子中至少具有1個直鏈烷基 或直鏈烯基之脂肪族胺、脂肪酸酯、脂肪酸醯胺、脂肪酸 、脂肪族醇、脂肪族醚等。極壓劑、耐磨損劑、油性劑一 般分別在〇 . 0 1〜3質量％、較佳爲〇 . 1〜1 . 5質量％之範圍。 清淨分散劑可舉例如作爲金屬系清淨劑之含有Ca、 Mg、Ba等鹼土類金屬之中性或高鹼性之磺酸鹽、酚鹽、 水楊酸鹽、羧酸鹽、膦酸鹽等。此等之中，金屬系清淨劑 以Ca磺酸鹽、Ca水楊酸鹽、Ca酚鹽等爲佳，特別以高鹼性 (過氯酸法之鹼價爲1 50〜5 00mgKOH / g )之Ca磺酸鹽、 Ca水楊酸鹽、Ca酚鹽爲佳。 又，無灰系之分散劑，如琥珀酸醯亞胺（含硼化物） 、琥珀酸酯等。 此等清淨分散劑之搭配量，通常爲0.0 1〜1 0質量％、 較佳爲0.1〜5質量％之範圍。 (a ) ’ （ b )以外之其他黏度指數提升劑，例如，前 述以外之聚甲基丙烯酸酯、前述以外之烯烴系共聚合物、 分散型烯烴系共聚合物、苯乙烯系共聚合物（例如，苯乙 烯一二烯共聚合物、苯乙烯-異戊二烯共聚合物等）等。 此等黏度指數提升劑之搭配量，通常爲0.5〜15質量％程度 ，較佳爲1〜1 0質量％。 本發明中，可搭配其他、流動點下降劑、消泡劑、界 面活性劑等。 -13- 201002814 本發明之潤滑油組成物之100 °c時的動黏度必須爲5.6 〜15.0mm2 / s。組成物之l〇〇°C時的動黏度未達5.6mm2/ s 則有無法充分防止噪音或振動之產生之情形，超過 I5.0mm2/s則有阻礙省燃費性能之虞。因此，100°C時的 動黏度以5.6~12.51111]12/3較佳。 本發明之潤滑油組成物除具有優異省燃費性，同時具 有可抑制噪音•振動之產生之效果。 例如，將該潤滑油用於内燃機，適用作爲省燃費性内 燃機油（引擎油）’且引擎運作時’可抑制尤其係加速蓮 轉時噪音•振動之產生。因此，特別係在用作配備4行程 引擎之4輪汽車或2輪汽車等所使用之内燃機用潤滑油之利 用價値高。 【實施方式】 [實施例] 接著，將本發明藉由實施例更詳細説明’但本發明不 限於此等之例。 又，噪音、省燃費性使用以下方法來實施。 (1 )噪音之評估 經下述之引擎發動（engine motoring)裝置與噪音測 定方法測定噪音。 〔引擎發動裝置與運轉條件〕 -14- 201002814201002814 VI. Description of the Invention: [Technical Field] The present invention relates to a lubricating oil composition, and more particularly relates to a mechanical device for lubricating a lubricating oil such as an internal combustion engine, which suppresses noise generation and at the same time imparts a fuel-saving lubrication Oil composition. [Prior Art] In recent years, the production and use of automobiles or industrial machinery of a world scale has increased rapidly, and accordingly, the energy consumption of petroleum and the like has increased. Therefore, the air pollution caused by energy use is becoming more and more serious and has become a major problem. In order to prevent such air pollution, it is necessary to reduce the amount of exhaust gas emitted from automobiles and the like, and to implement the method of lubricating oil to achieve fuel economy. However, lubricating oils, for example, fuel-saving methods for lubricating oils for engine engines (engine oils) are known to reduce the friction loss (stirring resistance) caused by engine oil, and it is known to reduce the viscosity (low viscosity) (for example, Patent Literature) 1 for reference). However, the use of a low-viscosity base oil or the like simply reduces the viscosity of the lubricating oil, which causes a problem that the noise or vibration of the engine becomes large. This noise or vibration acts as a noise and vibration hazard, which is a cause of a great negative impact on the living environment. Therefore, regarding the fuel-saving lubricating oil, it is desired to develop a lubricating oil composition which is low in viscosity and fuel-saving, and which can suppress noise and vibration. [Patent Document 1] JP-A-2004- 1 3 73 1 7 SUMMARY OF THE INVENTION [Problems to be Solved by the Invention] The present invention provides excellent fuel economy at the same time in this case. A lubricant composition that suppresses noise and vibration is intended. [Means for Solving the Problem] The present inventors have diligently studied the results of the development of the lubricating oil composition having the above-described preferred properties, and found that a specific base oil is used together with an ethylene-α-olefin copolymer having a specific molecular weight and/or Polymethacrylate, which is adjusted to a specific dynamic viscosity composition, achieves this purpose. The present invention has been accomplished based on the relevant knowledge. That is, the present invention provides: [1] a lubricating base oil having a dynamic viscosity of 3_5 to 10 mm 2 /s and a viscosity index of 100 or more at 100 ° C, and the number average molecular weight of (a) is 2,500 to 25,000. An ethylene-α-olefin copolymer and/or (b) a lubricating oil composition having a number average molecular weight of 10, 〇〇〇~30,000 of polymethacrylate, and a composition of 10 (TC) The lubricating oil composition having a dynamic viscosity of 5.6 to 15.0 mm 2 /s, and the lubricating oil having the dynamic viscosity of 1 〇〇 °c of the lubricating oil composition of 5.6 to 12.5 mm 2 /s as described in the above [1] The composition, [3] the lubricating oil base oil has a viscosity of 3.5 to 6 mm 2 /s, and the lubricating oil composition described in the above [1] or [2], and [4] further contains an antioxidant. , the extreme pressure agent, the anti-wear agent, the oil -6 - 201002814 agent, the detergent dispersant, the viscosity index enhancer', and the additive selected from at least one of the pour point depressants are described in the above [1] or [2] The lubricating oil composition according to the above [1] or [2] for use in an internal combustion engine [Effect of the Invention] According to the present invention, it is possible to provide a lubricating oil composition which is excellent in fuel economy and can suppress generation of noise and vibration. [Best Mode for Carrying Out the Invention] Base Oil for Lubricating Oil Composition of the Present Invention It is necessary to use a base oil having a dynamic viscosity of 100 to 10 mm 2 /s at 100 ° C and a viscosity index of 100 or more. When the dynamic viscosity at 100 ° is less than 3.5 mm 2 / s, there is a case where noise or vibration cannot be sufficiently prevented. If it exceeds 10 mm2 / s, there is a hindrance to the fuel economy performance. Therefore, the dynamic viscosity at l〇〇 °C is preferably 3.5 to 6 mm 2 / s. Further, the base oil used in the present invention has a viscosity index of 1 〇. 〇 Above. If the viscosity index is above 100, the low-temperature viscosity of the composition is lowered to save fuel, and at the same time, the viscosity reduction at higher temperatures can be suppressed, and the effect of suppressing noise or vibration can be improved. Therefore, the viscosity index of the base oil More preferably, it is more than 10 or more, and more preferably 120 or more of the base oil used in the present invention, and further, sulfur is 1000 ppm by mass or less, more preferably 201002814, and more preferably 500 ppm by mass or less. If the sulfur content is within 1 000 ppm by mass, the sulfur content can be increased. Composition The base oil in the lubricating oil composition of the present invention is not particularly limited, and the mineral oil and/or synthetic oil used in general lubricating oil can be used. For example, in the case of mineral oil base oil, for example, crude oil The atmospheric pressure distillation fraction or the atmospheric residue obtained by atmospheric distillation is subjected to vacuum distillation to obtain a lubricating oil fraction for performing more than one solvent deasphalting, solvent extraction, hydrogenation decomposition, hydrodewaxing, solvent removal. A base oil produced by anisotropically obtained by a process such as a wax or a hydrotreating process, or a mineral oil wax or a gas-to-liquid wax produced by a hydrogen-purchase process. Further, the synthetic oil base oil may, for example, be a poly-α-olefin such as polybutene or a hydrogenated product thereof, a 1-decene oligomer or a hydrogenated product thereof, di-2-ethylhexyl adipate, or di-2-( Polyester esters such as diesters such as ethylhexyl sebacate, trimethylolpropane octanoate, pentaerythritol-2-ethylhexanoate, aromatic synthetic oils such as alkylbenzenes and alkylnaphthalenes, and polyalkanes a diol or a derivative thereof or the like. In the present invention, the base oil may be a mineral oil base oil, a synthetic oil base oil or a mixture of two or more selected from among these. For example, one or more kinds of mineral base oils, one or more synthetic oil base oils, one or more kinds of mineral oil base oils, and a mixed oil of one or more synthetic oil base oils. In particular, it is preferred to use a mineral oil base oil obtained by purification including a hydrogenation decomposition treatment or a mixture of the base oil and a hydride of a poly-α-olefin such as a 1-decene oligomer. In the present invention, the base oil may be any mixture of two or more selected from the group consisting of mineral oil base oils, synthetic oil base oils, and the like. -8 - 201002814 In the present invention, the component (a) is an ethylene-α-olefin copolymer having a number average molecular weight of 2,500 to 25,000. Here, the number average molecular weight is less than 2,500, and the effect of suppressing noise or vibration is insufficient, and when it exceeds 25, the cut stability is lowered, and it is difficult to maintain the effect. Considering the suppression of noise or vibration and the stability of shearing, etc., the preferred average molecular weight of the ethylene-α-olefin copolymer is in the range of 2,500 to 5,000. Further, the α-olefin of the ethylene-α-olefin copolymer is preferably an α-olefin having 3 to 20 carbon atoms, such as propylene, 1-butene or 1-decene. Further, the ratio of ethylene to α-olefin is preferably in the range of 1:9 to 9:1 (mass ratio). The ethylene-α-olefin copolymer of the component (a) may be used singly or in combination of two or more. Further, the amount of the collocation is usually selected based on the total amount of the composition in the range of 〇 1 to 2 0% by mass. When the amount is 〇·1% by mass or more, the effect of suppressing noise or vibration can be obtained, and if it is 20% by mass or less, the viscosity is high when there is no low temperature, and the shear stability is also good, and it can be stably maintained. This effect. In the present invention, the component (b) is a polymethacrylate having a number average molecular weight of 10,000 to 30, fluorene. The polymethacrylate may be non-dispersed or dispersed. Here, the number average molecular weight is less than 10,000, and the effect of suppressing noise or vibration is insufficient. In addition, when the number average molecular weight is less than 30,000, the shear stability is lowered, and it is difficult to maintain the effect. Considering the suppression of noise or vibration and the stability of shearing, the preferred average molecular weight of the polymethacrylate is in the range of 15, 〇〇〇~201002814 25,000. The polymethacrylate of the component (b) may be used singly or in combination of one or more. Further, the amount of the composition may be selected in such a manner as to satisfy the condition of the dynamic viscosity at 10 ° C of the composition of the present invention, and usually, it is selected based on the total amount of the composition in the range of 0 _ 1 to 10% by mass. . If the amount is 〇·1% by mass or more, the fuel economy effect and the effect of suppressing noise or vibration can be obtained. If the amount is 10% by mass or less, the viscosity is too high when there is no low temperature, and the shear stability is also good. , can maintain this effect calmly. As described above, the present invention is a composition obtained by mixing the component (a) and/or the component (b) with a base oil, and further, various additives which are usually used in the lubricating oil can be used for the purpose of use. For example, an additive selected from the group consisting of an antioxidant, an extreme pressure agent, an antiwear agent, an oily agent, a detergent dispersant, a viscosity index enhancer other than (a), (b), and a pour point depressant is good. Antioxidant with phenolic antioxidants and/or amine antioxidants. The phenolic antioxidant can be used by any suitable powder antioxidant which is used as an antioxidant of a conventional lubricating oil. The phenolic antioxidant 'for example, 2,6-di-tert-butyl-4-methylphenol; 2,6-di-tert-butyl-tetraethylol: 2,4,6-three Tert — butyl phenol; 2,6 1-2 tert — butyl 4- 4 hydroxymethyl phenol; 2,6 —di-tert — butyl fluorene ' 2,4 —methyl —6 — tert — butyl酣; 2,6-di-tert-butyl-4-(N,N-dimethylaminomethyl)phenol; 2,6-two-tert-pentyl-4-methylphenol; 4,4 , Methylene bis(2,6-di-tert-tert-butylphenol)-10-201002814, 4,4'_ double (2,6-two-tert-butyl phenol), 4,4' pair (2-methyl-6-tert-butylphenol), 2,2'-methylenebis(4-ethyl-6-tert-butylphenol), 2,2'-methylene double (4- Methyl-6-tert-butylphenol), 4,4'-butylidene bis(3-methyl-6-tert-butylphenol), 4,4'-isopropylidene bis (2,6-di —tert — butyl phenolate”, 2,2′-methylene bis(4-methyl-6-nonyl phenol), 2,2′-isobutylene bis(4,6-dimethyl phenol), 2,2'-methylene double (4-methyl group) a 6-cyclohexylphenol), 2,4-dimethyl- 6-tert-butylphenol, 4,4'-thiobis(2-methyl-6-'^-butylphenol), 4 , 4'-thiobis(3-methyl-6-tert-butylphenol), 2,2'-thiobis(4-methyl-6-tert-butylphenol), double (3-A Base 4-hydroxy-5-tert-butylbenzyl sulfide, bis(3,5-di-tert-butyl-4-hydroxybenzyl) sulfide, 2,2'-thiodiethylene Bis[3_(3,5-di-41^-butyl-4-hydroxyphenyl)propionate], tridecyl-3-(3,5-di-tert-butyl-4-hydroxybenzene) Propionate, pentaerythritol monoterpene [3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], octyl-3-(3,5-di-terter-tert Benzyl 4-hydroxyphenyl)propionate, octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, octyl-3-(3-A Preferably, the base is 5_tert_butyl-4-hydroxyphenyl)propionic acid vinegar or the like. Further, the amine-based antioxidant can be suitably selected from any of the known amine-based antioxidants which are used as antioxidants for conventional lubricating oils. The amine is an antioxidant, such as a diphenylamine system, specifically such as diphenylamine or monooctyldiphenylamine; monodecyldiphenylamine; 4,4'-dibutyldiphenylamine -11 - 201002814 4,4'-dihexyldiphenylamine; 4,4'-dioctyldiphenylamine; 4,4'-didecyldiphenylamine; tetrabutyldiphenylamine ; tetrahexyldiphenylamine; tetraoctyldiphenylamine: tetradecyldiphenylamine, such as alkylated diphenylamine having 3 to 20 carbon atoms, and naphthylamine Specifically, such as α-naphthylamine; phenyl-α-naphthylamine, further butylphenyl-α-naphthylamine; hexylphenyl- ct-naphthylamine; octylphenyl-α-naphthyl An alkyl group-substituted phenyl-α-naphthylamine having a carbon number of 3 to 20, such as a nonylphenyl-α-naphthylamine. Among these, the effect of the diphenylamine system is better than that of the naphthylamine series, particularly the alkylated diphenylamine having an alkyl group of 3 to 20, particularly 4,4'-di (C3 to C2g yard base) Diphenylamine is preferred. In the present invention, the phenolic antioxidant may be used singly or in combination of two or more. Further, the above-mentioned amine-based antioxidants may be used singly or in combination of two or more kinds. Further, one type or more of a phenolic antioxidant and one or more types of an amine antioxidant may be used in combination. The amount of the antioxidant is selected from the viewpoint of the balance of the effect and the economy, and is preferably selected from the range of 0.05 to 3% by mass, more preferably 0.2 to 2% by mass based on the total amount of the lubricating oil composition. . Extreme pressure agent, anti-wear agent, such as zinc dithiophosphate, dithiocarbamic acid, disulfide, sulfurized coal hydrocarbons, sulfurized oils, sulfurized esters, thiocarbonates , sulfur-containing anti-wear agents such as thiocarbamate; phosphites, phosphates, phosphonates, and phosphorus or anti-wear agents such as amine or metal salts: thio Sulfur-containing and phosphorous anti-wear agents such as phosphites, phosphorothioates, thiophosphonates, and amine or metal salts thereof. -12- 201002814 Oily agent (friction modifier), any compound generally used as a friction modifier for lubricating oil, for example, an alkyl group or an alkenyl group having a carbon number of 6 to 30, especially a carbon number of 6 to 30 An aliphatic amine, a fatty acid ester, a fatty acid decylamine, a fatty acid, an aliphatic alcohol, an aliphatic ether or the like having at least one linear alkyl group or linear alkenyl group in the molecule. The extreme pressure agent, the anti-wear agent, and the oil-based agent are generally in the range of 11 to 3% by mass, preferably 〇.1 to 1.5% by mass. Examples of the detergent dispersant include a sulfonate, a phenolate, a salicylate, a carboxylate, a phosphonate, etc., which are an alkali earth metal such as Ca, Mg or Ba, which is a metal-based detergent. . Among these, the metal-based detergent is preferably a Ca sulfonate, a Ca salicylate, a Ca phenolate or the like, and particularly high alkalinity (the base price of the perchloric acid method is 1 50 to 500 mg KOH / g ) The Ca sulfonate, Ca salicylate, and Ca phenate are preferred. Further, an ashless dispersant such as bismuth succinate (containing a boride), succinate or the like. The amount of such a clean dispersant is usually in the range of 0.01 to 10% by mass, preferably 0.1 to 5% by mass. (a) Other viscosity index-improving agents other than ' (b), for example, polymethacrylate other than the above, olefin-based copolymer other than the above, dispersed olefin-based copolymer, styrene-based copolymer ( For example, a styrene-diene copolymer, a styrene-isoprene copolymer, etc.). The amount of the viscosity index-increasing agent is usually from 0.5 to 15% by mass, preferably from 1 to 10% by mass. In the present invention, it is possible to use other kinds, a pour point depressant, an antifoaming agent, an surfactant, and the like. -13- 201002814 The dynamic viscosity of the lubricating oil composition of the present invention at 100 °c must be 5.6 to 15.0 mm 2 /s. When the dynamic viscosity of the composition at 〇〇 ° C is less than 5.6 mm 2 / s, there is a case where noise or vibration cannot be sufficiently prevented, and if it exceeds I5.0 mm 2 / s, there is a hindrance of the fuel economy performance. Therefore, the dynamic viscosity at 100 ° C is preferably 5.6 to 12.51111] 12 / 3 . The lubricating oil composition of the present invention has an excellent fuel economy and an effect of suppressing noise and vibration. For example, when the lubricating oil is used in an internal combustion engine, it is suitable as a fuel-saving internal combustion engine oil (engine oil) and the engine is operated to suppress the generation of noise and vibration particularly when the engine is accelerated. Therefore, the profit of the lubricating oil for internal combustion engines used in a four-wheeled vehicle or a two-wheeled vehicle equipped with a four-stroke engine is particularly high. [Embodiment] [Embodiment] Next, the present invention will be described in more detail by way of examples, but the invention is not limited thereto. Moreover, noise and fuel economy are implemented by the following methods. (1) Evaluation of noise The noise was measured by the following engine motoring device and noise measurement method. [Engine starting device and operating conditions] -14- 201002814
使用引擎 :水冷600cc、4汽缸引擎 動閥形式 :DOHC (直打（direct strike type)) 引擎回轉數 • 3 0 0 Orpm 承油盤（oil pan)油溫：100°C 驅動用馬達 :7.5KW 〔噪音測定方法〕 使用噪音計（ 小野測器社製「LA5 5 60」），以周波數 分析裝置（小野測器製Repolyzer XN — 8100 )，測定 63 00Hz之周波數的功率頻譜（dB)。 (2 )省燃費性之評估 使用（1 )之噪音之「引擎發動裝置」，藉由測量馬 達之引擎驅動扭力（Nm )，來評估省燃費性。 〔引擎發動裝置與運轉條件〕Engine: Water-cooled 600cc, 4-cylinder engine valve type: DOHC (direct strike type) Engine revolutions • 3 0 0 Orpm Oil pan oil temperature: 100°C Drive motor: 7.5KW [Measurement method of noise] Using a noise meter ("LA5 5 60" manufactured by Ono Co., Ltd.), the power spectrum (dB) of the number of cycles of 63 Hz was measured by a cycle number analyzer (Repolyzer XN-8100, manufactured by Ono Instruments). (2) Assessment of fuel economy The "engine engine" of noise using (1) is used to measure fuel economy by measuring the engine drive torque (Nm) of the motor. [Engine starting device and operating conditions]
使用引擎 :水冷600cc、4汽缸引擎 動閥形式 :D 0 H C (直打） 引擎回轉數 :5 0 0 0rpm 承油盤油溫 ：1 0 0〇c 驅動用馬達 ：7.5KW 實施例1〜5、及比較例1〜3 使用第1表之各基油及添加劑調製潤滑油，並以上述 之方法評估噪音及省燃費性。其結果如第1表。 -15- 201002814 比較例 1 1 00 ύ 〇 1 τ—^ 1 '·Μ ο ο Ο <'"Η (Ν 00 Ο 1 ο (Μ Ο 10.90 15.40 〇 <N 00 Ο 异 I 〇 yn 1 < 1 r-Η ο ο Ο (Ν 00 ο 1 I 03 Ο 15.50 CN r—Η oo Ό Ο 异 1 〇 1 I丨Η ο ο Ο »—Η (Ν 00 ο 1 1 (Ν Ο 寸· (Ν (Ν 卜: oo 卜 實施例 m Ο 异 1 yri p 1—Η ο 寸· ο ^-Η ο (Ν 00 ο I 1 CN Ο Ο r-^ Κ r^) Η 寸 1 00 00 1 p 1 ο ¥ q 1 11 < ρ oi 00 ο Ο <Ν 1 <Ν Ο 00 (Ν m (Ν od 00 〇〇 〇\ m rn 〇 1 ίΤ) 1 Ι"'Μ ο 寸 ρ ^-Η ο τ·^ r-i οο ο I ο CN Ο — S K m vo 〇\ (N 00 00 1 1 Ο (N 1 τ—^ ρ ^J- Ο ρ —- CN 00 ο Ο (Ν 1 (Ν Ο ο m (N σν 00 \o 〇 1 1 1 Ρ — ο "Η ο F" 1 < (N 00 ο Ο 1 οα ο g OO 00 Os 潤滑油基油Αυ 潤滑油基油Β2) 潤滑油基油c3) 聚甲基丙烯酸酯A4) 聚甲基丙烯酸酯Β5) 二烷基二硫磷酸鋅6) 金屬系清淨劑7) 硼改性琥珀酸醯亞胺Α8) 硼改性琥珀酸醯亞胺Β9) 聚丁烯基琥珀酸醯亞胺10) 抗氧化劑η) 乙烯-α-烯烴共聚合物α12) 乙烯-α-烯烴共聚合物β13) 其他添加劑14) 基油之100°c動黏度 mm2/s 組成物之100°C動黏度 mm2/s m T3 B 迪 m m 鲫 圇仞另匡（_( _ S ) -16- 201002814 〔注〕 1 )石蠟系礦油、100 °C動黏度4.469mm2 / s、黏度指 數1 27 2) 石蟾系礦油、100t動黏度5.2 8 5mm2/ s、黏度指 數1 〇 4 3) 石蠟系礦油、100°C動黏度l〇.89mm2/s、黏度指 數1 07 4 )數平均分子量3 00,000 5 )數平均分子量21，000 6 )第2級烷基型二烷基二硫代磷酸鋅、含P量8.6質 量％ 7) Ca磺酸鹽：鹼價（過氯酸法）300mgKOH/g、Ca 含有量1 2.5質量％ 8) 氮含有量1.8質量％、硼含有量2.0質量％、 9 )氮含有量2.3質量％、硼含有量1.9質量％ 1 〇 )氮含有量1 . 〇質量％、硼含有量0質量％ 1 1 )二烷基二苯基胺 12) 數平均分子量2,600、100°C動黏度600mm2/s、 黏度指數240 13) 數平均分子量 3,700、100°(：動黏度 2,0001111112/8 、黏度指數300 1 4 )消泡劑 由第1表可知，實施例1〜4爲使用數平均分子量爲 -17- 201002814 2,600或3,700的乙烯—α —烯烴共聚合物a或b，實施例5 爲使用數平均分子量爲21,000的聚甲基丙烯酸酯，又，任 一基油之性狀及組成物之1 0 0 °c動黏度爲滿足要件者。此 等本發明之潤滑油組成物可降低噪音，同時省燃費性能優 〇 相對於此，不具有本發明必要之數平均分子量的乙烯 一 α -烯烴共聚合物或聚甲基丙烯酸酯之比較例1、2，噪 音降低性、省燃費性之性能皆不足。又，雖使用數平均分 子量爲3,700的乙烯—α —烯烴共聚合物，組成物之100°C 動黏度爲15.4mm2/ s之比較例3的省燃費性差。 [產業上的利用性] 本發明之潤滑油使用於以内燃機爲首之各種機械裝置 時，爲顯示優異省燃費性，同時可抑制噪音•振動之產生 的潤滑油組成物。因此，有利於作爲防止大氣污染、及噪 音振動公害之潤滑油。 -18-Use engine: water-cooled 600cc, 4-cylinder engine valve type: D 0 HC (straight hit) Engine revolutions: 5 0 0 0rpm Oil pan oil temperature: 1 0 0〇c Drive motor: 7.5KW Example 1~5 And Comparative Examples 1 to 3 The lubricating oil was prepared using each of the base oils and additives of Table 1, and the noise and fuel economy were evaluated by the above methods. The result is shown in Table 1. -15- 201002814 Comparative Example 1 1 00 ύ 〇1 τ—^ 1 '·Μ ο ο Ο <'"Η (Ν 00 Ο 1 ο (Μ Ο 10.90 15.40 〇<N 00 Ο I 〇yn 1 < 1 r-Η ο ο Ο (Ν 00 ο 1 I 03 Ο 15.50 CN r—Η oo Ό Ο 1 〇 1 I丨Η ο ο Ο »—Η (Ν 00 ο 1 1 (Ν Ο ·· ( Ν Ν Ν 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1 1 1 1 1 1 1 1 1 1 1 1 1 1 00 00 1 p 1 ο ¥ q 1 11 < ρ oi 00 ο Ο <Ν 1 <Ν Ο 00 (Ν m (Ν od 00 〇〇〇\ m rn 〇1 ίΤ) 1 Ι"'Μ ο ρρ ^-Η ο τ·^ ri οο ο I ο CN Ο — SK m vo 〇\ (N 00 00 1 1 Ο (N 1 τ—^ ρ ^J- Ο ρ —- CN 00 ο Ο (Ν 1 (Ν Ο ο m ( N σν 00 \o 〇1 1 1 Ρ — ο "Η ο F" 1 < (N 00 ο Ο 1 οα ο g OO 00 Os Lubricating base oil 润滑油 Lubricating base oil Β 2) Lubricating base oil c3) Polymethacrylate A4) Polymethacrylate Β5) Zinc dialkyl dithiophosphate 6) Metal detergent 7) Boron modified succinic acid succinic acid Α 8) Boron modified succinic acid succinic acid Β 9) Poly Ding Alkenyl succinate iodide 10) Antioxidant η) Ethylene-α-olefin copolymer α12) Ethylene-α-olefin copolymer β13) Other additives 14) Base oil 100°c dynamic viscosity mm2/s Composition 100 ° C dynamic viscosity mm2 / sm T3 B di mm 鲫囵仞 another 匡 (_ ( _ S ) -16- 201002814 [Note] 1 ) paraffinic mineral oil, 100 °C dynamic viscosity 4.469mm2 / s, viscosity index 1 27 2) Dendrobium mineral oil, 100t dynamic viscosity 5.2 8 5mm2 / s, viscosity index 1 〇 4 3) paraffinic mineral oil, 100 °C dynamic viscosity l〇.89mm2 / s, viscosity index 1 07 4) Average molecular weight 3 00,000 5 ) number average molecular weight 21,000 6) second-order alkyl type dialkyl dithiophosphate zinc, containing P 8.6% by mass 7) Ca sulfonate: base price (perchloric acid method) 300 mg KOH/g, Ca content: 1.2.5 mass% 8) nitrogen content 1.8 mass%, boron content 2.0 mass%, 9) nitrogen content 2.3 mass%, boron content 1.9% by mass 1 〇) nitrogen content 1 . 〇% by mass, boron content 0% by mass 1 1) Dialkyldiphenylamine 12) Number average molecular weight 2,600, 100 ° C dynamic viscosity 600 mm 2 / s, viscosity index 240 13) Number average molecular weight 3,700, 100 ° (: Dynamic viscosity 2,0001111112/8, viscosity index 300 1 4 ) Antifoaming agent As can be seen from the first table, Examples 1 to 4 are ethylene-α-olefin copolymers having a number average molecular weight of -17-201002814 2,600 or 3,700. a or b, Example 5 is a polymethacrylate having a number average molecular weight of 21,000, and the properties of any of the base oils and the 10 0 °c dynamic viscosity of the composition are satisfactory. The lubricating oil composition of the present invention can reduce noise, and at the same time, the fuel economy performance is superior to that of the comparative example of the ethylene-α-olefin copolymer or polymethacrylate having no number average molecular weight necessary for the present invention. 1, 2, the performance of noise reduction and fuel economy are insufficient. Further, in the case of using an ethylene-α-olefin copolymer having a number average molecular weight of 3,700, Comparative Example 3 having a 100 ° C dynamic viscosity of 15.4 mm 2 /s was inferior in fuel economy. [Industrial Applicability] The lubricating oil of the present invention is used as a lubricating oil composition which exhibits excellent fuel economy and suppresses generation of noise and vibration when it is used in various mechanical devices including internal combustion engines. Therefore, it is advantageous as a lubricating oil that prevents air pollution and noise vibration. -18-