JP2004300449A - グリース組成物 - Google Patents
グリース組成物 Download PDFInfo
- Publication number
- JP2004300449A JP2004300449A JP2004223469A JP2004223469A JP2004300449A JP 2004300449 A JP2004300449 A JP 2004300449A JP 2004223469 A JP2004223469 A JP 2004223469A JP 2004223469 A JP2004223469 A JP 2004223469A JP 2004300449 A JP2004300449 A JP 2004300449A
- Authority
- JP
- Japan
- Prior art keywords
- grease
- grease composition
- nickel
- oil
- rolling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
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- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/26—Carboxylic acids; Salts thereof
- C10M129/28—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M129/30—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 7 or less carbon atoms
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- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/26—Carboxylic acids; Salts thereof
- C10M129/28—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M129/38—Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms
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- C10M135/12—Thio-acids; Thiocyanates; Derivatives thereof
- C10M135/14—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond
- C10M135/18—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond thiocarbamic type, e.g. containing the groups
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Abstract
【解決手段】 ニッケルのジチオカルバミン酸塩をグリース全量に対し1.5重量%以上、モリブデンのジチオリン酸塩をグリース全量に対し1重量%以上、かつこれらを合計でグリース全量の20重量%以下となるように含有することを特徴とするグリース組成物。
【選択図】 なし
Description
(1)ニッケルのジチオカルバミン酸塩をグリース全量に対し1.5重量%以上、モリブデンのジチオリン酸塩をグリース全量に対し1重量%以上、かつこれらを合計でグリース全量の20重量%以下となるように含有することを特徴とするグリース組成物。
(2)ニッケルのジチオカルバミン酸塩がジエチルジチオカルバミン酸ニッケルまたはジブチルジチオカルバミン酸ニッケルであることを特徴とする上記(1)記載のグリース組成物。
(3)増ちょう剤がリチウム複合石けんまたはウレア化合物であり、かつ、転がり軸受用であることを特徴とする上記(1)または(2)に記載のグリース組成物。
本発明のグリース組成物は、基油及び増ちょう剤に加え、必須添加剤として、ニッケルのジチオカルバミン酸塩をグリース全量に対し1.5重量%以上、モリブデンのジチオリン酸塩をグリース全量に対し1重量%以上、かつこれらの合計でグリース全量の20重量%以下となるように含有する。
基油は、通常グリースに使用される鉱油、合成油あるいはこれらの混合油を使用できる。具体的には、鉱油としてはパラフィン系鉱油、ナフテン系鉱油を挙げることができ、合成炭化水素油としてはポリ−α−オレフィン油等を、エーテル油としてはジアルキルジフェニルエーテル油、アルキルトリフェニルエーテル油、アルキルテトラフェニルエーテル油等を、エステル油としてはジエステル油、ポリオールエステル油またはこれらのコンプレックスエステル油、芳香族エステル油等を挙げることができる。
増ちょう剤も特に制限されることはなく、例えばアルミニウム、バリウム、カルシウム、リチウム、ナトリウム等の金属石鹸、リチウムコンプレックス、カルシウムコンプレックス、アルミニウムコンプレックス等の複合金属石鹸、ジウレア、トリウレア、テトラウレア、ポリウレア等のウレア化合物、あるいは、シリカゲル、ベントナイト等の無機系化合物、ウレタン化合物、ウレア・ウレタン化合物、ナトリウムテレフタラメート化合物等を適宜使用できる。
酸化防止剤としてゴム、プラスチック、潤滑油等に添加する老化防止剤、オゾン劣化防止剤、酸化防止剤から適宜選択して使用する。例えば、以下の化合物を使用することができる。
防錆剤として、例えば以下の化合物を使用することができる。
即ち、有機スルホン酸のアンモニウム塩、バリウム、亜鉛、カルシウム、マグネシウム等アルカリ金属、アルカリ土類金属の有機スルホン酸塩、有機カルボン酸塩、フェネート、ホスホネート、アルキルもしくはアルケニルこはく酸エステル等のアルキル、アルケニルこはく酸誘導体、ソルビタンモノオレエート等の多価アルコールの部分エステル、オレオイルザルコシン等のヒドロキシ脂肪酸類、1−メルカプトステアリン酸等のメルカプト脂肪酸類あるいはその金属塩、ステアリン酸等の高級脂肪酸類、イソステアリルアルコール等の高級アルコール類、高級アルコールと高級脂肪酸とのエステル、2,5−ジメルカプト−1,3,4−チアジアゾール、2−メルカプトチアジアゾール等のチアゾール類、2−(デシルジチオ)−ベンゾイミダゾール、ベンズイミダゾール等のイミダゾール系化合物、あるいは、2,5−ビス(ドデシルジチオ)ベンズイミダゾール等のジスルフィド系化合物、あるいは、トリスノニルフェニルフォスファイト等のリン酸エステル類、ジラウリルチオプロピオネート等のチオカルボン酸エステル系化合物等を使用することができる。また、亜硝酸塩等も使用することができる。
油性剤として、例えば以下の化合物を使用することができる。
即ち、オレイン酸やステアリン酸等の脂肪酸、オレイルアルコール等の脂肪酸アルコール、ポリオキシエチレンステアリン酸エステルやポリグリセリルオレイン酸エステル等の脂肪酸エステル、リン酸、トリクレジルホスフェート、ラウリル酸エステルまたはポリオキシエチレンオレイルエーテルリン酸等のリン酸エステル等を使用することができる。
〔実施例1〜4、比較例1〜3〕
実施例1〜4並びに比較例1〜2のベースグリースを以下の如く調製した。
・増ちょう剤 : ジウレア化合物
・増ちょう剤量: 30重量%
・基油 : 鉱油(138mm2/sec,40℃)
軸受温度測定による試験グリースの発熱抑制効果と、四球試験による耐荷重性を評価した。
・発熱抑制効果−円すいころ軸受回転試験機での軸受温度測定
(試験条件)試験軸受:内径φ25、外径φ52の並勾配円すいころ軸受
負荷荷重:ラジアル50kgf、アキシアル50kgf
回転数 :10000rpm
雰囲気温度:室温
(評価)上記試験条件で24h経過した後の軸受外輪温度を測定
(判定基準)軸受上昇温度 60℃以上 :効果なし ×
50℃以上60℃未満:効果不十分 △
40℃以上50℃未満:効果有り ○
40℃未満 :効果優良 ◎
・耐荷重性−四球試験機を用いて測定。即ち、ASTMに規定された試験装置を用い、3つの下記試験球を互いに接するように正三角形状に配置して固定し、その中心に形成された窪み上に1つの試験球を載置する。そして、試験グリースを充填した状態で、載置した試験球を下記の一定の回転数で回転させながら下記の負荷を加えた。
(試験条件)ball:3/4″SUJ2製鋼球
回転数 :4000rpm一定速度
負荷荷重:70kgf/minの連続負荷
(評価)上記試験条件でトルクが急激に立ち上がり始めた荷重を焼き付き荷重とする。
(判定基準)焼付き荷重 30kgf 未満 :効果なし ×
30kgf 以上50kgf 未満:効果不十分 △
50kgf 以上65kgf 未満:効果有り ○
65kgf 以上 :効果優良 ◎
Claims (3)
- ニッケルのジチオカルバミン酸塩をグリース全量に対し1.5重量%以上、モリブデンのジチオリン酸塩をグリース全量に対し1重量%以上、かつこれらを合計でグリース全量の20重量%以下となるように含有することを特徴とするグリース組成物。
- ニッケルのジチオカルバミン酸塩がジエチルジチオカルバミン酸ニッケルまたはジブチルジチオカルバミン酸ニッケルであることを特徴とする請求項1記載のグリース組成物。
- 増ちょう剤がリチウム複合石けんまたはウレア化合物であり、かつ、転がり軸受用であることを特徴とする請求項1または2に記載のグリース組成物。
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JP2004223469A JP2004300449A (ja) | 1995-10-23 | 2004-07-30 | グリース組成物 |
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JP2004223469A JP2004300449A (ja) | 1995-10-23 | 2004-07-30 | グリース組成物 |
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JP51108797A Expired - Fee Related JP3605827B2 (ja) | 1995-10-23 | 1996-10-22 | グリース組成物 |
JP2004223469A Pending JP2004300449A (ja) | 1995-10-23 | 2004-07-30 | グリース組成物 |
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US (1) | US5922654A (ja) |
JP (2) | JP3605827B2 (ja) |
DE (1) | DE19681044B4 (ja) |
WO (1) | WO1997015644A1 (ja) |
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- 1996-10-22 JP JP51108797A patent/JP3605827B2/ja not_active Expired - Fee Related
- 1996-10-22 US US08/860,296 patent/US5922654A/en not_active Expired - Lifetime
- 1996-10-22 WO PCT/JP1996/003071 patent/WO1997015644A1/ja active Application Filing
- 1996-10-22 DE DE19681044T patent/DE19681044B4/de not_active Expired - Lifetime
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2004
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JP2007277459A (ja) * | 2006-04-10 | 2007-10-25 | Cosmo Sekiyu Lubricants Kk | 難燃性グリース組成物 |
Also Published As
Publication number | Publication date |
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DE19681044B4 (de) | 2008-08-28 |
WO1997015644A1 (fr) | 1997-05-01 |
DE19681044T1 (de) | 1998-01-08 |
JP3605827B2 (ja) | 2004-12-22 |
US5922654A (en) | 1999-07-13 |
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