JP5795626B2 - 銅に対する腐食性を改良するための方法 - Google Patents
銅に対する腐食性を改良するための方法 Download PDFInfo
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Description
2.≡SiCl+NaOR→≡SiOR+NaCl
3.≡SiH+HOR(触媒)→≡SiOR+H2
4.≡SiOH+HOR→≡SiOR+H2O
5.SiCl+CH3NO2→≡SiOCH3+NO2Cl
6.≡SiSH+HOR→≡SiOR+H2S
7.≡SiCl+HOC(O)R→≡SiOC(O)R+HCl
8.≡SiCl+HONR’R”→≡SiONR’R”+HCl
基準となる潤滑油組成物を、以下の成分を一緒にして混合することにより製造して、SAEで15W−40の粘度グレードとなる処方を得た:
(b)2質量%の、PIBコハク酸無水物(PIBは2300の平均分子量を有する)と重質ポリアミンから製造され、エチレンカーボネートで後処理されたビスコハク酸イミド;
(c)3質量%の、PIBSA、N−フェニルフェニレンジアミン、および900乃至1000の平均分子量を有するポリエーテルジアミンから誘導されたポリコハク酸イミド分散剤;
(d)硫化カルシウムフェネート清浄剤;
(e)ジアルキルジチオリン酸亜鉛;
(f)ホウ素化スルホネート清浄剤;
(g)マグネシウムスルホネート清浄剤;
(h)カルシウムスルホネート清浄剤;
(i)モリブデンコハク酸イミド錯体;
(j)一種もしくは二種以上の酸化防止剤;
(k)消泡剤;
(l)粘度指数向上剤;および
(m)残り(II種基材油の混合物)
1質量%のテトラエトキシシラン(アルドリッチ社より入手可能)を比較例Aの基準となる潤滑油組成物に加えることで、潤滑油組成物を製造した。
比較例Aおよび実施例1の潤滑油組成物について、ASTM試験番号D6594に従い高温腐食性ベンチテスト(HTCBT)を採用して、銅に対する腐食性を試験した。ASTM試験番号D6594は、潤滑油の腐食性を測定するために使用される工業規格ベンチテストである。この試験は、銅、鉛、錫、およびリン青銅の四種の金属標本を、予め測定した量の試験エンジン油中に浸漬することにより実施される。この試験油には、高温において一定の時間、空気を吹き込む。試験の完了時に、鉛の標本および痛んだ油を調べて、それぞれ腐食および腐食生成物の検出を行う。各試験群について参照用の油を試験し、試験の許容度を検証する。
(ASTM D130−04 銅片分類)
────────────────────────────────────
分類 名称 記述1
────────────────────────────────────
1 わずかな曇り a.淡いオレンジ色(新たに研磨した銅片とほとんど同じ)
b.濃いオレンジ色
────────────────────────────────────
2 中程度の曇り a.濃い紫がかった赤色
b.ラベンダー色
c.ラベンダー青色もしくは銀色あるいはそれらの両方が、
濃い紫がかった赤色に重なっている多色
d.銀白色
e.真鍮色もしくは金色
────────────────────────────────────
3 濃い曇り a.真鍮色の銅片に重なっているマゼンタ色
b.赤色および緑色を示すが、灰色を含まない(クジャク様
の)多色
────────────────────────────────────
4 腐食 a.ピーコックグリーンをわずかに示す透明な黒、濃い灰色
もしくは茶色
b.光沢のある黒色もしくは漆黒色
────────────────────────────────────
註1:ASTM銅片腐食標準は、これらの記述の銅片の性質を色再現したものである。
──────────────────
実施例1 比較例A
──────────────────
銅1(ppm) 30.0 56.0
銅片 1b 2c
──────────────────
註1:痛んだ油における銅の濃度を記録
Claims (15)
- (a)主要量の潤滑粘度の基油および(b)一もしくは二以上の塩基性窒素原子を持つ一もしくは二以上の分散剤を含む潤滑油組成物の銅に対する腐食性を改良するための方法であって、当該潤滑油組成物に、一般式Si−X4で表される化合物またはその加水分解物、ただしXは、それぞれ独立に、ヒドロキシル含有基、ヒドロカルビルオキシ含有基、アシルオキシ含有基、アミノ含有基、モノアルキルアミノ含有基、もしくはジアルキルアミノ含有基である、からなる有効量の一もしくは二以上の銅腐食性改良剤を加えることを含む方法。
- 上記の潤滑粘度の基油が、I種基材油、II種基材油、III種基材油、IV種基材油、V種基材油、およびそれらの混合物からなる群より選ばれる請求項1に記載の方法。
- 上記の一もしくは二以上の分散剤が、コハク酸イミド、カルボン酸アミド、炭化水素モノアミン、炭化水素ポリアミン、マンニッヒ塩基、ホスホン酸アミド、チオホスホン酸アミド、リン酸アミド、チアゾール、トリアゾール、ボレートで後処理されたコハク酸イミド、エチレンカーボネートで後処理されたコハク酸イミド、およびそれらの混合物からなる群より選ばれる請求項1もしくは2に記載の方法。
- 上記の一もしくは二以上の分散剤がアルケニルコハク酸イミドである請求項1もしくは2に記載の方法。
- Xが、それぞれ独立に、C1乃至C6のアルコキシ基、C6乃至C20のアリールオキシ基、C7乃至C20のアルキルアリールオキシ基、C7乃至C20のアリールアルキルオキシ基、C6乃至C20のシクロアルキルオキシ基、C7乃至C20のシクロアルキルアルキルオキシ基、およびC7乃至C20のアルキルシクロアルキルオキシ基からなる群より選ばれる請求項1乃至4のいずれか一項に記載の方法。
- Xが、それぞれ独立に、C1乃至C6のアルコキシ、C6乃至C20のアリールオキシ、およびC1乃至C6のアシルオキシからなる群より選ばれる請求項1乃至4のいずれか一項に記載の方法。
- 上記の一もしくは二以上の銅腐食性改良剤が、下記式Iの一もしくは二以上の油溶性四官能加水分解性シラン化合物またはその加水分解物である請求項1乃至4のいずれか一項に記載の方法:
式中、Rは、それぞれ独立に、C1乃至C20の炭化水素基であり;R1は、それぞれ独立に、直鎖もしくは分岐鎖のアルキル、シクロアルキル、もしくはアリール基であり;そして、aは0乃至4の整数である。 - aが1乃至4の整数であり、ROが、それぞれ独立に、C1乃至C6のアルコキシ基、C6乃至C20のアリールオキシ基、C7乃至C20のアルキルアリールオキシ基、C7乃至C20のアリールアルキルオキシ基、C6乃至C20のシクロアルキルオキシ基、C7乃至C20のシクロアルキルアルキルオキシ基、およびC7乃至C20のアルキルシクロアルキルオキシ基からなる群より選ばれる請求項7に記載の方法。
- 上記の一もしくは二以上の銅腐食性改良剤が、テトラメトキシシラン、テトラエトキシシラン、テトラプロポキシシラン、テトライソプロポキシシラン、テトラブトキシシラン、テトライソブトキシシラン、テトラキス(メトキシエトキシ)シラン、テトラキス(メトキシプロポキシ)シラン、テトラキス(エトキシエトキシ)シラン、テトラキス(メトキシエトキシエトキシ)シラン、トリメトキシエトキシシラン、ジメトキシジエトキシシラン、トリエトキシメトキシシラン、およびそれらの混合物からなる群より選ばれる請求項1乃至5のいずれか一項に記載の方法。
- 上記の潤滑油組成物が、潤滑油組成物の全質量に基づき、下記成分を含む請求項1乃至9のいずれか一項に記載の方法:
0.05乃至15質量%の上記の一もしくは二以上の分散剤;および
0.01乃至5質量%の上記の一もしくは二以上の銅腐食性改良剤。 - 上記の潤滑油組成物が、さらに酸化防止剤、清浄剤、さび止め剤、曇り除去剤、抗乳化剤、金属不活性化剤、摩擦調整剤、耐摩耗剤、流動点降下剤、消泡剤、補助溶媒、パッケージ適合化剤、腐食防止剤、染料、極圧剤、およびそれらの混合物からなる群より選ばれる一種もしくは二種以上の潤滑油添加剤を含む請求項1乃至10のいずれか一項に記載の方法。
- 上記の潤滑油組成物が内燃機関のクランクケース用の潤滑油組成物である請求項1乃至11のいずれか一項に記載の方法。
- 上記の潤滑油組成物が圧縮点火ディーゼルエンジンのクランクケース用の潤滑油組成物である請求項1乃至11のいずれか一項に記載の方法。
- 上記の潤滑油組成物が内燃高負荷ディーゼルエンジンのクランクケース用の潤滑油組成物である請求項1乃至11のいずれか一項に記載の方法。
- (a)主要量の潤滑粘度の基油および(b)一もしくは二以上の塩基性窒素原子を持つ一もしくは二以上の分散剤を含む潤滑油組成物における一般式Si−X4またはその加水分解物、ただし、Xは、それぞれ独立に、ヒドロキシル含有基、ヒドロカルビルオキシ含有基、アシルオキシ含有基、アミノ含有基、モノアルキルアミノ含有基、もしくはジアルキルアミノ含有基である、からなる一もしくは二以上の銅腐食性改良剤の使用であって、内燃機関中にて当該潤滑油組成物の銅に対する腐食性の改良のための使用。
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PCT/US2011/027418 WO2011126642A2 (en) | 2010-03-31 | 2011-03-07 | Method for improving copper corrosion performance |
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