JP4956438B2 - 複数の酸化防止剤によって安定化された潤滑剤組成物 - Google Patents
複数の酸化防止剤によって安定化された潤滑剤組成物 Download PDFInfo
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- JP4956438B2 JP4956438B2 JP2007545454A JP2007545454A JP4956438B2 JP 4956438 B2 JP4956438 B2 JP 4956438B2 JP 2007545454 A JP2007545454 A JP 2007545454A JP 2007545454 A JP2007545454 A JP 2007545454A JP 4956438 B2 JP4956438 B2 JP 4956438B2
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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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/046—Overbasedsulfonic acid salts
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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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
- C10M2219/087—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
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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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/06—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
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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
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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- Anti-Oxidant Or Stabilizer Compositions (AREA)
Description
(A)天然及び合成の潤滑基油からなる群から選択された少なくとも1つの潤滑油;
(B)式
(R1)a−Ar1−NH−Ar2−(R2)b (I)
[式中、
Ar1及びAr2は、独立に、芳香族炭化水素からなる群から選択され、
R1及びR2は、独立に、水素及びヒドロカルビル基、好ましくは6〜約100個の炭素原子を有するヒドロカルビル基からなる群から選択され、
a及びbは、独立に、0〜3であり、但し、(a+b)は4以下である]によって表される第二級ジアリールアミンからなる群から選択された少なくとも1つの第1の酸化防止剤;及び
(C)式
[式中、R3及びR4は、独立に、水素及びヒドロカルビル基、好ましくは1〜100個の炭素原子を有するヒドロカルビル基からなる群から選択される]の置換パラ−フェニレンジアミンからなる群から選択された少なくとも1つの第2の酸化防止剤;及び、任意に、
(D)式
[式中、R5、R6及びR7は、独立に、水素及びヒドロカルビル基、好ましくは1〜100個の炭素原子を有するヒドロカルビル基からなる群から選択され、但し、少なくとも1個のヒドロカルビル基はオルト位にあり、かつ、好ましくはiso−又はtert−構造を有するアルキルである]の置換フェノールからなる群から選択された少なくとも1つの第3の酸化防止剤;
を含む潤滑剤組成物を対象とする。
(1)炭化水素置換基、すなわち脂肪族(例えば、アルキル又はアルケニル)、脂環族(例えば、シクロアルキル、シクロアルケニル)置換基、芳香族置換基、芳香族、脂肪族及び脂環族によって置換された芳香族置換基などに加えて環が分子の他の1部分を経て完結する環状置換基(すなわち、例えば、どれであれ2つの表示されている置換基が一緒になって脂環基を形成してもよい);
(2)置換炭化水素置換基、すなわち、本発明の意味において、置換基がほとんど炭化水素の性格を変えない非炭化水素基を含む置換基−当業者はこのような基を承知している(例えば、ハロ、ヒドロキシ、メルカプト、ニトロ、ニトロソ、スルホキシ、シアノ、エステルなど)。
(3)ヘテロ原子置換基、すなわち、本発明の意味の範囲内でほとんど炭化水素の性格を有しながら、環又は鎖中に炭素以外の原子を含有し、それ以外は炭素原子で構成されている置換基(例えば、アルコキシ又はアルキルチオ)。適当なヘテロ原子は、当業者には明白であり、例えば、イオウ、酸素、窒素であり、このような置換基は、例えば、ピリジル、フリール、チエニル、イミダゾリルなどである。ヒドロカルビル基中の炭素原子10個ごとに、好ましくは2個以下、より好ましくは1個以下のヘテロ置換基が存在する。最も好ましくは、ヒドロカルビル基中にはこのようなヘテロ原子置換基はない、すなわちヒドロカルビル基は純粋に炭化水素である。
(R1)a−Ar1−NH−Ar2−(R2)b (I)
[式中、
Ar1及びAr2は、独立に、芳香族炭化水素からなる群から選択され、
R1及びR2は、独立に、水素又はヒドロカルビル基、好ましくは6〜約100個の炭素原子を有するヒドロカルビル基であり、a及びbは、独立に、0〜3の選択された整数であり、但し、(a+b)は4以下である]によって表すことができる。
[式中、R3及びR4は、独立に、ヒドロカルビル基、好ましくは1〜100個の炭素原子を有するヒドロカルビル基である]で表される置換パラ−フェニレンジアミンから選択される。
[式中、R5、R6及びR7は、独立に、水素又はヒドロカルビル基、好ましくは1〜100個の炭素原子を有するヒドロカルビル基であり、但し、少なくとも1個のヒドロカルビル基はオルト位にあり、かつ、アルキルであり好ましくはiso−又はtert−構造を有するアルキルである]で表される置換フェノールから選択された第3の酸化防止剤が存在することができる。
(a)1〜約40個の炭素原子を含有している直鎖及び分岐鎖アルキル又はアルケニル基、より好ましくは1〜20個の炭素原子を含有している直鎖又は分岐鎖アルキル基、例えば、メチル、エチル、プロピル、ブチル、ペンチル、ヘキシル、ヘプチル、オクチル、2−エチルヘキシル、ノニル、デシル、ウンデシル、ドデシル、トリデシル、テトラデシル、ペンタデシル、ヘキサデシル、ヘプタデシル、オクタデシル、オレイル、ノナデシル、エイコシル、上記の異性体及び混合物など;
(b)環状のアルキル及びアルケニル基、例えば、シクロペンチル、シクロヘキシル、シクロヘプチル、シクロオクチル、シクロドデシル、シクロペンテニル、シクロヘキセニル、シクロヘプテニル、シクロオクテニル、シクロドデセニル、シクロペンタジエニル、シクロヘキサジエニル、シクロヘプタジエニル、シクロオクタジエニルなど、これらは1〜40個の炭素原子を有する、より好ましくは1〜16個の炭素原子を有するアルキル基又はアルケニル基、例えばメチル、エチル、プロピル、ブチル、ペンチル、ヘキシル、ヘプチル、オクチル、ノニル、デシル、ウンデシル、ドデシル、トリデシル、テトラデシル、ペンタデシル、ヘキサデシル、これらの異性体及び混合物などの1個又は複数で場合によっては置換されている;
(c)フェニル及び1〜40個、より好ましくは1〜16個の炭素原子を有する1個又は複数のアルキル基又はアルケニル基、例えば、メチル、エチル、プロピル、ブチル、ペンチル、ヘキシル、ヘプチル、オクチル、ノニル、デシル、ウンデシル、ドデシル、トリデシル、テトラデシル、ペンタデシル、ヘキサデシル、これらの異性体などで置換されたフェニル;
(d)ナフチル及び1〜40個、より好ましくは1〜16個の炭素原子を有する1個又は複数のアルキル基又はアルケニル基、例えば、メチル、エチル、プロピル、ブチル、ペンチル、ヘキシル、ヘプチル、オクチル、ノニル、デシル、ウンデシル、ドデシル、トリデシル、テトラデシル、ペンタデシル、ヘキサデシル、これらの異性体及び混合物などで置換されたナフチル;
(e)ヘテロ原子置換基、特に1〜40個、より好ましくは1〜20個の炭素原子を有するアルコキシアルキル基、アルコキシアリール基、例えば、メトキシメチル、エトキシメチル、エトキシエチル、プロポキシメチル、プロポキシエチル、プロポキシプロピルなど;並びに1つ又は複数の1〜16個の炭素原子を有するアルコキシ基、例えば、メトキシ、エトキシ、プロポキシ、ブトキシ、ペントキシ、ヘキソキシ、ヘプトキシ、オクトキシ、ノノキシ、デコキシ、ウンデコキシ、ドデコキシ、トリデシル、テトラデコキシ、テトラデコキシ、ペンタデコキシ、ヘキサデコキシ、これらの異性体及び混合物などで置換されたフェニル;並びに
(f)置換炭化水素の置換基、特にヒドロキシ、カルボキシ、ニトロ、シアノなど。
組成物は、それらがこれらの添加剤を含有しているときは、通常は基油中に、その中の添加剤がそれらに付随する正常な機能を提供するのに有効であるような量で、ブレンドする。こうした添加剤の代表的な有効量を表1に例示する。
加圧示差走査熱分析(PDSC)により、表4の各ブレンドの酸化誘導時間(OIT)を測定した。使用したPDSC測定器は、Mettler Toledo,Inc(スイス)製のMettler DSC27HPである。PDSC法は、それぞれの測定を通じて一定の酸素圧力下でスチール製セルを使用する。この測定器は、100分間のOITについて±2.5分間の標準的な再現性を95パーセントの信頼度で有している。PDSCの試験条件を表3に示す。PDSC測定の開始時には、スチールセルを酸素で加圧し、40℃/分の速度で所定の等温温度まで加熱する。誘導時間は、サンプルが等温温度に到達した時からエンタルピー変化が観察されるまでを測る。酸化誘導時間が長いほど、油の酸化安定性が良い。
エンジンオイル配合物の安定化における第二級ジアリールアミン及びパラ−フェニレンジアミンの混合物の相乗効果が、中〜高温熱酸化エンジンオイルシミュレーション試験(TEOST)(MHT)によってより明確に実証された。この試験法は、特別に構成されたスチールロッド(鋼棒)の上に、試験油8.5を、熱酸化及び触媒作用の条件下で連続的に圧力をかけて繰り返し通過させることによって、形成された付着物の質量を測定する。使用した測定器はTannas Co.製であり、0.15(x+16)の標準的な再現性を有しており、ここでのxは2回以上の繰り返し試験結果の平均値である。TEOST試験条件は、表5に記載されている。得られた付着物の量が少ないほど、油の酸化安定性が良い。
Claims (10)
- (A)天然及び合成の潤滑基油からなる群から選択された少なくとも1つの潤滑油;
(B)モノ−、ジ−、及びトリ−ノニルジフェニルアミンの混合物である第1の酸化防止剤;及び
(C)N−(ヘキシル/ヘプチル)−N’−フェニル−パラ−フェニレンジアミンのブレンドである第2の酸化防止剤;
を含む潤滑剤組成物。 - 第1の酸化防止剤と第2の酸化防止剤の含有比率が1:99から99:1である、請求項1に記載の組成物。
- 第1の酸化防止剤と第2の酸化防止剤の含有比率が10:90から90:10である、請求項1に記載の組成物。
- 分散化剤、洗浄剤、錆抑制剤、酸化防止剤、金属不活性化剤、磨耗防止剤、消泡剤、摩擦調整剤、シール膨潤剤、乳化破壊剤、粘度指数向上剤、及び流動点低下剤からなる群から選択された少なくとも1つの追加の添加剤をさらに含む、請求項1に記載の組成物。
- (A)少なくとも1つの自動車燃料;
(B)モノ−、ジ−、及びトリ−ノニルジフェニルアミンの混合物である第1の酸化防止剤;及び
(C)N−(ヘキシル/ヘプチル)−N’−フェニル−パラ−フェニレンジアミンのブレンドである第2の酸化防止剤;
を含む燃料組成物。 - (A)モノ−、ジ−、及びトリ−ノニルジフェニルアミンの混合物である第1の酸化防止剤;及び
(B)N−(ヘキシル/ヘプチル)−N’−フェニル−パラ−フェニレンジアミンのブレンドである第2の酸化防止剤;
を潤滑剤に加えることを含む、潤滑剤の酸化安定性を増大させる方法。 - 第1の酸化防止剤と第2の酸化防止剤の含有比率が1:99から99:1である、請求項6に記載の方法。
- 第1の酸化防止剤と第2の酸化防止剤の含有比率が10:90から90:10である、請求項6に記載の方法。
- 組成物が、分散化剤、洗浄剤、錆抑制剤、酸化防止剤、金属不活性化剤、磨耗防止剤、消泡剤、摩擦調整剤、シール膨潤剤、乳化破壊剤、粘度指数向上剤、及び流動点低下剤からなる群から選択された少なくとも1つの追加の添加剤をさらに含む、請求項6に記載の方法。
- (A)モノ−、ジ−、及びトリ−ノニルジフェニルアミンの混合物である第1の酸化防止剤;及び
(B)N−(ヘキシル/ヘプチル)−N’−フェニル−パラ−フェニレンジアミンのブレンドである第2の酸化防止剤;
を自動車燃料に加えることを含む、自動車燃料の酸化安定性を増大させる方法。
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US11/145,493 US7704931B2 (en) | 2004-12-10 | 2005-06-03 | Lubricant compositions stabilized with multiple antioxidants |
PCT/US2005/038206 WO2006065344A1 (en) | 2004-12-10 | 2005-10-24 | Lubricant compositions stabilized with multiple antioxidants |
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-
2005
- 2005-06-03 US US11/145,493 patent/US7704931B2/en not_active Expired - Fee Related
- 2005-10-24 CN CN2005800420172A patent/CN101072855B/zh not_active Expired - Fee Related
- 2005-10-24 EP EP05804958.6A patent/EP1833952B1/en not_active Not-in-force
- 2005-10-24 KR KR1020077012921A patent/KR101275425B1/ko not_active IP Right Cessation
- 2005-10-24 JP JP2007545454A patent/JP4956438B2/ja not_active Expired - Fee Related
- 2005-10-24 WO PCT/US2005/038206 patent/WO2006065344A1/en active Application Filing
- 2005-10-24 CN CN2012102935090A patent/CN102816626A/zh active Pending
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KR101275425B1 (ko) | 2013-06-19 |
CN101072855B (zh) | 2012-12-19 |
US20060128574A1 (en) | 2006-06-15 |
US7704931B2 (en) | 2010-04-27 |
JP2008523203A (ja) | 2008-07-03 |
CN102816626A (zh) | 2012-12-12 |
KR20070085907A (ko) | 2007-08-27 |
WO2006065344A1 (en) | 2006-06-22 |
EP1833952B1 (en) | 2015-12-23 |
EP1833952A1 (en) | 2007-09-19 |
CN101072855A (zh) | 2007-11-14 |
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