JP5988891B2 - 変速機用潤滑油組成物 - Google Patents
変速機用潤滑油組成物 Download PDFInfo
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- JP5988891B2 JP5988891B2 JP2013029695A JP2013029695A JP5988891B2 JP 5988891 B2 JP5988891 B2 JP 5988891B2 JP 2013029695 A JP2013029695 A JP 2013029695A JP 2013029695 A JP2013029695 A JP 2013029695A JP 5988891 B2 JP5988891 B2 JP 5988891B2
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- 125000004437 phosphorous atom Chemical group 0.000 claims description 6
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- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 3
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- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
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- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
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- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 2
- 239000012964 benzotriazole Substances 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
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- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 2
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 description 2
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- BVXOPEOQUQWRHQ-UHFFFAOYSA-N dibutyl phosphite Chemical compound CCCCOP([O-])OCCCC BVXOPEOQUQWRHQ-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
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- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 2
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- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
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- CKDDRHZIAZRDBW-UHFFFAOYSA-N henicosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCC(O)=O CKDDRHZIAZRDBW-UHFFFAOYSA-N 0.000 description 2
- GOQYKNQRPGWPLP-UHFFFAOYSA-N heptadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 2
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- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
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Classifications
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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
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
-
- 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
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Description
しかしながら、上記手法だけでは粘度温度特性および低温性能と疲労防止性、耐焼付き性の両立が十分に図れておらず、これらの性能を両立させつつその他の諸性能についても問題ない性能を有する潤滑油組成物の開発が求められている。
(A)成分の100℃における動粘度は、好ましく2mm2/s以上であり、より好ましくは2.5mm2/s以上、さらに好ましくは2.7mm2/s以上である。また、好ましくは3.3mm2/s以下であり、より好ましくは3.1mm2/s以下である。
(A)成分の100℃における動粘度が3.5mm2/sを超える場合は、粘度温度特性及び低温粘度特性が悪化し、1.5mm2/s未満の場合は、潤滑箇所での油膜形成が不十分となるため金属疲労防止性、耐熱性に劣り、また潤滑油基油の蒸発損失が大きくなるため、それぞれ好ましくない。
なお、脱ろう工程としては溶剤脱ろう、接触脱ろうのいずれの工程を適用してもよいが、低温粘度特性をより改善できる点で接触脱ろう工程であることが特に好ましい。
なお、本発明でいう引火点とは、JIS K 2265(開放式引火点)に準拠して測定された引火点を意味する。
(A)成分の窒素分については特に制限はないが、熱・酸化安定性により優れる組成物を得ることができる点で、好ましくは5質量ppm以下であり、より好ましくは3質量ppm以下、最も好ましくは実質的に含まれないことが望ましい。
なお、本発明でいう硫黄分及び窒素分の含有量とは、ASTM D4951に準拠して測定される値を意味する。
(1)パラフィン基系原油及び/又は混合基系原油の常圧蒸留による留出油
(2)パラフィン基系原油及び/又は混合基系原油の常圧蒸留残渣油の減圧蒸留による留出油(WVGO)
(3)潤滑油脱ろう工程により得られるワックス(スラックワックス等)及び/又はガストゥリキッド(GTL)プロセス等により得られる合成ワックス(フィッシャートロプシュワックス、GTLワックス等)
(4)基油(1)〜(3)から選ばれる1種又は2種以上の混合油及び/又は当該混合油のマイルドハイドロクラッキング処理油
(5)基油(1)〜(4)から選ばれる2種以上の混合油
(6)基油(1)、(2)、(3)、(4)又は(5)の脱れき油
(7)基油(6)のハイドロクラッキング処理油
(8)基油(1)〜(7)から選ばれる2種以上の混合油
(10)上記基油(1)〜(8)から選ばれる基油又は当該基油から回収された潤滑油留分を水素化異性化し、その生成物又はその生成物から蒸留等により回収される潤滑油留分について溶剤脱ろうや接触脱ろうなどの脱ろう処理を行い、または、当該脱ろう処理をしたあとに蒸留することによって得られる水素化異性化鉱油
また、上記(9)又は(10)の潤滑油基油を得るに際して、必要に応じて溶剤精製処理及び/又は水素化仕上げ処理工程を更に設けてもよい。
本発明において、基油組成物中の(A)成分の含有量は50〜97質量%であり、好ましくは55質量%以上、より好ましくは60質量%以上、さらに好ましくは70質量%以上、特に好ましくは80質量%以上である。基油組成物中の(A)成分の含有量が50質量%未満の場合は、金属疲労防止性および耐熱性が劣る。
鉱油系基油としては、(A)成分以外の鉱油系基油が挙げられる。また合成系基油としては、具体的には、ポリブテン又はその水素化物;1−オクテンオリゴマー、1−デセンオリゴマー、1−ドデセンオリゴマー等のポリ−α−オレフィン又はその水素化物;アルキルナフタレン、アルキルベンゼンの芳香族系合成油又はこれらの混合物等が例示できる。
なかでも1−オクテンオリゴマー、1−デセンオリゴマー、1−ドデセンオリゴマー等のポリ−α−オレフィン又はその水素化物が好ましい。
本発明において、潤滑油基油として、(A)成分および(B)成分以外の他の基油を混合する場合の他の基油の含有量は、潤滑油基油全量基準で、0〜47質量%であり、好ましくは40質量%以下、より好ましくは30質量%以下、さらに好ましくは20質量%以下、特に好ましくは10質量%以下であり、最も好ましくは0質量%である。
なお、本発明の潤滑油基油が、前記(A)成分および(B)成分の混合基油に、さらに他の鉱油系基油および/または合成系基油を含有する基油である場合においても、その潤滑油基油の40℃における動粘度は18mm2/s以下であることが好ましい。
(C)成分の亜リン酸エスエルとしては、(C1)硫黄を含有しない亜リン酸エスエル、および/または(C2)硫黄を含有する亜リン酸エスエルが挙げられる。
アリールアルキル基としては、具体的には、ベンジル基、フェニルエチル基、フェニルプロピル基、フェニルブチル基、フェニルペンチル基、フェニルヘキシル基等の炭素数7〜12のアリールアルキル基(これらアルキル基は直鎖状でも分枝状でもよい)を挙げることができる。
これらの中でもジアルキルホスファイトが好ましく、特にジブチルホスファイトが好ましい。
なお、炭素数2〜30の炭化水素基としては、先に(C1)成分においてRで示したものと同じものが挙げられる。
ホウ素化無灰分散剤としては、炭素数40〜400の直鎖若しくは分枝状のアルキル基又はアルケニル基を分子中に少なくとも1個有する含窒素化合物又はその誘導体、あるいはアルケニルコハク酸イミドのホウ素化品等が挙げられる。これらの中から任意に選ばれる1種類あるいは2種類以上を配合することができる。
(D)成分としては、潤滑油に通常用いられるホウ素化した任意の無灰分散剤を用いることができるが、清浄性に優れるところから、ホウ素化コハク酸イミドであることが好ましい。
R1−SX−R2 (2)
一般式(2)において、R1は炭素数2〜15のアルケニル基、R2は炭素数2〜15のアルキル基またはアルケニル基を示し、xは1〜8の整数を示す。xは2以上が好ましく、4以上が特に好ましい。
この化合物は炭素数2〜15のオレフィンまたはその2〜4量体を硫黄、塩化硫黄等の硫化剤と反応させることによって得ることができる。
オレフィンとしては、例えば、プロピレン、イソブテン、ジイソブテンなどが好ましく用いられる。
R3−Sy−R4 (3)
一般式(3)において、R3及びR4は、それぞれ個別に、炭素数1〜20のアルキル基(シクロアルキル基も含む)、炭素数6〜20のアリール基、炭素数7〜20のアリールアルキル基又はアルキルアリール基を示し、それらは互いに同一であっても異なっていてもよく、yは2〜8の整数を示す。
100℃における動粘度が2.5mm2/s未満の場合には潤滑部位の油膜保持性および蒸発性に問題を生ずるおそれがあり、100℃における動粘度が4.0mm2/sを超える場合には省燃費性が不足するおそれがある。
ここで言うブルックフィールド粘度とは、ASTM D2983により測定される値である。
また、本発明の潤滑油組成物は、上記以外の変速機油としての性能にも優れており、自動車、建設機械、農業機械等の自動変速機用あるいは手動変速機用、ディファレンシャルギヤ用の潤滑油としても好適に用いられる。その他、摩耗防止性、疲労防止性及び低温粘度特性が要求される潤滑油、例えば、工業用ギヤ油、二輪車、四輪車等の自動車用、発電用、舶用等のガソリンエンジン、ディーゼルエンジン、ガスエンジン用の潤滑油、タービン油、圧縮機油等にも好適に使用することができる。
表1に示すように、本発明の潤滑油組成物(実施例1〜8)、比較用の潤滑油組成物(比較例1〜12)をそれぞれ調製した。得られた組成物について、動粘度、粘度指数、低温粘度特性、疲労防止性、四球耐焼付性を測定し、その結果を同じく表1に併記した。
ASTM D2983に準拠し、各潤滑油組成物の−40℃におけるBF粘度を測定した。本試験においては、BF粘度の値が小さいものほど低温流動性に優れていることを意味する。
(2)疲労防止性
転がり疲労試験機を用いて、以下の試験条件でピッチング発生寿命を評価した。寿命は10%累積破損確率で示した。
転がり疲労試験機では、試験片はスラストボールベアリング(NSKスラスト玉軸受51305、ボールは3球を使用)を使用した。試験条件は、面圧:5.9GPa、回転数:1500rpm、油温:120℃である。
(3)高速四球耐熱性
ASTM D2596に準拠し、高速四球試験機を用い、各潤滑油組成物の1800回転における最大非焼付き荷重(LNSL)を測定した。本試験においては、最大非焼付き荷重が大きいほど耐熱性に優れていることを意味する。
Claims (2)
- (A)100℃における動粘度が1.5mm2/s以上3.5mm2/s以下、流動点が−25℃以下、粘度指数が105以上、%CPが85以上、%CNが2以上15以下、%CAが3以下である鉱油系基油を基油組成物全量基準で50〜97質量%および(B)100℃における動粘度が2〜10mm2/sのモノエステル系基油を基油組成物全量基準で3〜10質量%含有してなる潤滑油基油に、(C)亜リン酸エステルを組成物中のリン分がリン原子換算で250〜350質量ppm、および(D)ホウ素化無灰分散剤を、ホウ素原子換算で潤滑油組成物全量を基準として30〜120質量ppm含有し、かつ組成物中ホウ素原子質量%のリン原子質量%に対する比率(B/P)が0.07〜0.42であり、組成物の100℃における動粘度が2.5〜4.0mm2/sであることを特徴とする変速機用潤滑油組成物。
- さらに(E)ポリサルファイド及び/又はチアジアゾールを含有することを特徴とする請求項1に記載の変速機用潤滑油組成物。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2013029695A JP5988891B2 (ja) | 2013-02-19 | 2013-02-19 | 変速機用潤滑油組成物 |
PCT/JP2013/081112 WO2014129032A1 (ja) | 2013-02-19 | 2013-11-19 | 変速機用潤滑油組成物 |
US14/768,602 US9540587B2 (en) | 2013-02-19 | 2013-11-19 | Lubricating oil composition for transmissions |
EP13875393.4A EP2960321B1 (en) | 2013-02-19 | 2013-11-19 | Lubricant oil composition for transmissions |
CN201380073357.6A CN105051171B (zh) | 2013-02-19 | 2013-11-19 | 变速机用润滑油组合物 |
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BR112015028641A2 (pt) * | 2013-05-14 | 2017-07-25 | Lubrizol Corp | composição e método de lubrificação de uma transmissão de lubrificação |
JP6247600B2 (ja) * | 2014-06-16 | 2017-12-13 | Jxtgエネルギー株式会社 | 変速機用潤滑油組成物 |
JP6284450B2 (ja) * | 2014-07-15 | 2018-02-28 | Jxtgエネルギー株式会社 | 変速機用潤滑油組成物 |
WO2016152230A1 (ja) * | 2015-03-20 | 2016-09-29 | Jxエネルギー株式会社 | 自動変速機用潤滑油組成物 |
JP6907461B2 (ja) * | 2016-02-29 | 2021-07-21 | 出光興産株式会社 | 潤滑油組成物、潤滑方法、及び変速機 |
JP6661435B2 (ja) * | 2016-03-23 | 2020-03-11 | 出光興産株式会社 | 潤滑油組成物、及び潤滑方法 |
JP6718349B2 (ja) * | 2016-09-27 | 2020-07-08 | Jxtgエネルギー株式会社 | 無段変速機用潤滑油組成物 |
JP6962677B2 (ja) * | 2016-10-27 | 2021-11-05 | Emgルブリカンツ合同会社 | 潤滑油組成物 |
WO2018112135A1 (en) | 2016-12-16 | 2018-06-21 | The Lubrizol Corporation | Lubrication of an automatic transmission with reduced wear on a needle bearing |
JP2019073570A (ja) * | 2017-10-12 | 2019-05-16 | Emgルブリカンツ合同会社 | 潤滑油組成物 |
JP2019073572A (ja) * | 2017-10-12 | 2019-05-16 | Emgルブリカンツ合同会社 | 潤滑油組成物 |
JP2019151804A (ja) * | 2018-03-06 | 2019-09-12 | Emgルブリカンツ合同会社 | 潤滑油組成物 |
JP7016733B2 (ja) * | 2018-03-13 | 2022-02-07 | 出光興産株式会社 | 潤滑油組成物、潤滑油組成物の製造方法及び無段変速機 |
JP7261528B2 (ja) * | 2019-02-15 | 2023-04-20 | エクソンモービル・テクノロジー・アンド・エンジニアリング・カンパニー | 潤滑油組成物 |
JP7454556B2 (ja) * | 2019-03-29 | 2024-03-22 | 出光興産株式会社 | 潤滑油組成物 |
FR3094377B1 (fr) * | 2019-04-01 | 2021-05-21 | Total Marketing Services | Composition lubrifiante pour transmission |
US20230002697A1 (en) * | 2019-12-04 | 2023-01-05 | The Lubrizol Corporation | Use of ester base stocks to improve viscosity index and efficiency in driveline and industrial gear lubricating fluids |
JP7563935B2 (ja) | 2020-10-09 | 2024-10-08 | Eneos株式会社 | 潤滑油組成物 |
JP2023008046A (ja) * | 2021-07-05 | 2023-01-19 | 出光興産株式会社 | 潤滑油組成物 |
DE102022116644A1 (de) | 2022-07-04 | 2024-01-04 | Volkswagen Aktiengesellschaft | Flüssigkeitszusammensetzung zur Verwendung in elektrischen Antrieben |
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JP4112070B2 (ja) | 1998-03-31 | 2008-07-02 | 新日本石油株式会社 | 内燃機関用潤滑油組成物 |
CA2390229A1 (en) | 1999-11-09 | 2001-05-17 | Barry C. Deane | Method for optimizing fuel economy of lubricant basestocks |
EP2479249B1 (en) * | 2003-02-21 | 2014-01-01 | Nippon Oil Corporation | Lubricating oil composition for transmissions |
JP3921178B2 (ja) | 2003-02-21 | 2007-05-30 | 新日本石油株式会社 | 変速機用潤滑油組成物 |
JP5288861B2 (ja) | 2008-04-07 | 2013-09-11 | Jx日鉱日石エネルギー株式会社 | 潤滑油組成物 |
JP5695815B2 (ja) * | 2008-08-04 | 2015-04-08 | Jx日鉱日石エネルギー株式会社 | 潤滑油組成物 |
JP2010090251A (ja) * | 2008-10-07 | 2010-04-22 | Nippon Oil Corp | 潤滑油基油及びその製造方法、潤滑油組成物 |
WO2010151514A1 (en) * | 2009-06-26 | 2010-12-29 | The Lubrizol Corporation | Engine oil formulations for biodiesel fuels |
JP5455480B2 (ja) * | 2009-07-15 | 2014-03-26 | 昭和シェル石油株式会社 | 潤滑油組成物 |
JP5756336B2 (ja) * | 2011-05-06 | 2015-07-29 | Jx日鉱日石エネルギー株式会社 | 潤滑油組成物 |
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CN105051171A (zh) | 2015-11-11 |
JP2014159496A (ja) | 2014-09-04 |
US9540587B2 (en) | 2017-01-10 |
EP2960321A1 (en) | 2015-12-30 |
US20150376544A1 (en) | 2015-12-31 |
CN105051171B (zh) | 2017-06-13 |
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