JP2013538930A - 抗ミスト添加剤を有する潤滑油組成物 - Google Patents
抗ミスト添加剤を有する潤滑油組成物 Download PDFInfo
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Abstract
Description
開示技術の1つの成分は潤滑粘度の油である。本発明の潤滑油組成物で使用する基油は、米国石油協会(American Petroleum Institute(API))の基油互換性ガイドライン(Interchangeability Guidelines)で指定されているようなグループI〜Vの基油のいずれかから選択することができる。5つの基油グループは以下の通りである:
本発明の潤滑組成物は、エチレン誘導モノマー単位(すなわち、エチレンモノマー誘導単位)を実質的に含まない高分子量のオレフィンポリマーを含む。一実施形態では、このポリマーは、少なくとも1つのメタロセン(例えば、シクロペンタジエニル遷移金属化合物)およびアルモキサン化合物を含む触媒系の存在下で、αオレフィンモノマーもしくはαオレフィンモノマーの混合物またはエチレンおよび少なくとも1つのC3〜C28αオレフィンモノマーを含む混合物を重合させることによって調製することができる。
本発明の潤滑組成物は、1つまたは複数の過塩基性清浄剤を含む。あるいは過塩基性または超塩基性(superbased)塩を指す過塩基性材料は一般に、金属およびその金属と反応する特定の酸性有機化合物の化学量論にしたがって中和するために存在する含量より過剰な金属含量を特徴とする、単相の均一なニュートン系である。過塩基性材料は、酸性材料(一般に無機酸または低級カルボン酸、例えば二酸化炭素)を、酸性有機化合物、前記酸性有機材料のための少なくとも1つの不活性な有機溶媒(鉱油、ナフサ、トルエン、キシレン等)を含む反応媒体、化学量論的に過剰な金属塩基および塩化カルシウム、酢酸、フェノールまたはアルコールなどの促進剤を含む混合物と反応させることによって調製される。酸性有機材料は通常、オイル中での溶解度を提供するのに十分な数の炭素原子を有することになる。過剰金属の量は一般に金属比で表される。「金属比」という用語は、酸性有機化合物の当量に対する金属の全当量の比である。中性金属塩は1の金属比を有する。通常の塩の中に存在する金属の3.5倍の金属を有する塩は、3.5当量過剰、すなわち4.5の比の金属を有することになる。「金属比」という用語は、表題「Chemistry and Technology of Lubricants」第2版、R. M. MortierおよびS. T. Orszulik編、著作権1997年のような標準的な教科書においても説明されている。
潤滑組成物は、任意選択で他の性能添加剤(以下に記載)の存在下、本明細書に記載のプロセスの生成物を潤滑粘度の油に添加することによって調製することができる。
で表すことができる。適切なエステル含有ヒンダードフェノール酸化防止剤の化学のより詳細な説明は米国特許第6,559,105号に見られる。
で表すことができる。一実施形態では、Uが脂肪族基である場合、Uは特に1〜5個の炭素原子を含むアルキレン基である。あるいは、アミンは式(1a)
本発明に記載の潤滑剤は、本明細書に記載の潤滑剤を機械装置に供給することによって、その装置を潤滑するのに使用することができる。その装置は、内燃機関、例えばガソリン燃焼またはディーゼル燃焼自動車エンジン、大型車両用ディーゼルエンジン、船舶用ディーゼルエンジンまたは定置ガスエンジンであってよい。そうしたエンジンはサンプ潤滑され得、その潤滑剤は、そこからエンジンの運動部分を潤滑し得るサンプに供給することができる。あるいは、潤滑剤を、サンプの一部ではなく別個の供給源から供給することができる。
**この試験について確立されている合格限界は<0.819である
ポリマー添加剤を含むオイルは著しい改善をもたらし、ベースラインと比べてIVDを>32%低下させた。ポリマー添加剤を含むオイルは試験に合格したが、ベースラインオイルは明らかに不合格であった。
Claims (21)
- 潤滑剤組成物であって、
(a)潤滑粘度の油、
(b)少なくとも約20,000の数平均分子量のポリオレフィンであって、ポリマーが0〜約20重量%のエチレン誘導モノマー単位を含み、前記ポリオレフィンが前記組成物の約0.001重量%〜約1.0重量%の量で存在するポリオレフィン、および
(c)過塩基性金属含有清浄剤
を含む潤滑剤組成物。 - 前記ポリオレフィンが、4個以上の炭素原子を有する少なくとも1つのオレフィンモノマーから誘導される単位を約50〜100重量%含む、請求項1に記載の組成物。
- 前記ポリオレフィンが、少なくとも約50,000の数平均分子量を有し、イソブチレン誘導単位を含む、請求項1または請求項2に記載の組成物。
- 前記ポリマーの数平均分子量が約200,000〜約10,000,000である、請求項1から3のいずれか一項に記載の組成物。
- 前記過塩基性清浄剤が、少なくとも約3.5の金属比を有するスルホン酸カルシウムを含む、請求項1から4のいずれかに記載の組成物。
- 前記過塩基性清浄剤がフェノール系清浄剤を含む、請求項1から5のいずれかに記載の組成物。
- 前記過塩基性清浄剤が、約90%〜約100%のTBNを組成物に提供する、請求項1から6のいずれかに記載の組成物。
- 前記過塩基性清浄剤が、約40%〜約90%のTBNを組成物に提供する、請求項1から6のいずれかに記載の組成物。
- 約0.3重量%〜約10重量%の硫酸灰分含量を有する、請求項1から8のいずれかに記載の組成物。
- 約0.3重量%〜約1.0重量%の硫酸灰分含量を有する、請求項1から8のいずれかに記載の組成物。
- 無灰分散剤、摩耗防止剤、無灰酸化防止剤、摩擦調整剤、粘度指数向上剤またはその組合せをさらに含む、請求項1から10のいずれかに記載の組成物。
- 前記潤滑粘度の油が、APIグループIIIもしくはグループIVのオイルまたはその混合物を含む、請求項1から11のいずれかに記載の組成物。
- 内燃機関を潤滑する方法であって、請求項1から12のいずれかに記載の潤滑剤組成物を前記内燃機関に供給するステップを含む、方法。
- 前記内燃機関が直接噴射ガソリンエンジンである、請求項13に記載の方法。
- 前記内燃機関が圧縮点火エンジンである、請求項13に記載の方法。
- 前記内燃機関が、前記潤滑剤で潤滑されるシリンダーを含む船舶用ディーゼルエンジンである、請求項13に記載の方法。
- 直接噴射ガソリンエンジン中の吸入弁デポジットを減少させる方法であって、前記エンジンに請求項1から12のいずれかに記載の潤滑剤組成物を供給するステップを含む、方法。
- 直接噴射ガソリンエンジン中のオイルミスティングを減少させる方法であって、前記エンジンに請求項1から12のいずれかに記載の潤滑剤組成物を供給するステップを含む、方法。
- 圧縮点火エンジン中のオイルミスティングを減少させる方法であって、前記エンジンに請求項1から12のいずれかに記載の潤滑剤を供給するステップを含む方法。
- 船舶用ディーゼルシリンダー中のオイルミスティングを減少させる方法であって、前記シリンダーに請求項1から12のいずれかに記載の潤滑剤組成物を供給するステップを含む方法。
- 前記船舶用ディーゼルシリンダーが2ストローク船舶用ディーゼルエンジン中にある、請求項20に記載の方法。
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US39023710P | 2010-10-06 | 2010-10-06 | |
US61/390,237 | 2010-10-06 | ||
PCT/US2011/054842 WO2012047949A1 (en) | 2010-10-06 | 2011-10-05 | Lubricating oil composition with anti-mist additive |
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JP2013538930A true JP2013538930A (ja) | 2013-10-17 |
JP2013538930A5 JP2013538930A5 (ja) | 2014-11-20 |
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US (1) | US9115615B2 (ja) |
EP (1) | EP2625254B1 (ja) |
JP (1) | JP2013538930A (ja) |
KR (1) | KR20130126608A (ja) |
CN (1) | CN103237875A (ja) |
CA (1) | CA2813585A1 (ja) |
SG (1) | SG188668A1 (ja) |
WO (1) | WO2012047949A1 (ja) |
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KR20130126608A (ko) | 2013-11-20 |
EP2625254B1 (en) | 2021-02-24 |
EP2625254A1 (en) | 2013-08-14 |
WO2012047949A1 (en) | 2012-04-12 |
CN103237875A (zh) | 2013-08-07 |
CA2813585A1 (en) | 2012-04-12 |
US9115615B2 (en) | 2015-08-25 |
US20130263807A1 (en) | 2013-10-10 |
SG188668A1 (en) | 2013-05-31 |
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