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JP2586871B2 - 油中分散型非黒鉛系潤滑油 - Google Patents

油中分散型非黒鉛系潤滑油

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Publication number
JP2586871B2
JP2586871B2 JP5041271A JP4127193A JP2586871B2 JP 2586871 B2 JP2586871 B2 JP 2586871B2 JP 5041271 A JP5041271 A JP 5041271A JP 4127193 A JP4127193 A JP 4127193A JP 2586871 B2 JP2586871 B2 JP 2586871B2
Authority
JP
Japan
Prior art keywords
oil
lubricating oil
weight
calcium
carbohydrate
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.)
Expired - Fee Related
Application number
JP5041271A
Other languages
English (en)
Other versions
JPH06256784A (ja
Inventor
健次 酒井
孝一 後藤
均 横溝
一広 三田村
俊紀 川井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP5041271A priority Critical patent/JP2586871B2/ja
Priority to US08/201,992 priority patent/US5460737A/en
Priority to DE69420600T priority patent/DE69420600T2/de
Priority to ES94400428T priority patent/ES2138055T3/es
Priority to EP94400428A priority patent/EP0613939B1/en
Publication of JPH06256784A publication Critical patent/JPH06256784A/ja
Application granted granted Critical
Publication of JP2586871B2 publication Critical patent/JP2586871B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • C10M169/00Lubricating 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
    • C10M169/04Mixtures of base-materials and additives
    • C10M169/048Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
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    • C10M105/32Esters
    • C10M105/42Complex esters, i.e. compounds containing at least three esterified carboxyl groups and derived from the combination of at least three different types of the following five types of compound: monohydroxy compounds, polyhydroxy compounds, monocarboxylic acids, polycarboxylic acids and hydroxy carboxylic acids
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    • C10M129/28Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M129/38Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms
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Description

【発明の詳細な説明】
【0001】
【産業上の利用分野】本発明は炭素鋼、合金鋼、非鉄金
属を温間鍛造加工並びに熱間鍛造、圧延、製管、引抜
き、押し出し加工する際、加工面に使用される油中分散
型非黒鉛系潤滑油に関するもので、黒鉛系潤滑油に代わ
って作業環境を改善する事を目的として使用されるのに
有用である。
【0002】
【従来の技術】温間にて鍛造加工する際或いは熱間にて
鍛造、圧延、製管、引抜き、押し出し加工する際、加工
面に給油される潤滑油剤には黒鉛を油あるいは水中に分
散させたものが主に使用されている。油中分散のものは
潤滑性は良いが金型の冷却性に乏しい。水中分散のもの
は冷却性に優れるが潤滑性に劣る為、加工条件により使
い分けて使用されている。又、いずれの潤滑油剤とも外
観が黒色な為作業環境の汚れが問題となっている。
【0003】
【発明が解決しようとする課題】本発明の目的は、上記
大別される2種の潤滑油の内、油中分散型のものであっ
て、潤滑性が要求される温間鍛造加工或いは熱間鍛造、
圧延、製管、引抜き、押し出し加工で、従来の黒鉛系油
中分散型潤滑油のように作業環境を汚染することなく、
黒鉛系油分散型潤滑油と同等以上の潤滑性を有し金型の
寿命延長が可能な潤滑油を提供することにある。
【0004】
【課題を解決するための手段】本発明者らは上記課題を
解決すべく鋭意研究を重ねた結果、炭水化物及び/又は
炭水化物誘導体と特定の被膜増強剤更に特定の分散剤を
基油中へ分散してなることを特徴とする油中分散型非黒
鉛系潤滑油により、本発明の目的を達成出来ることを見
出し本発明に到達したものである。
【0005】すなわち本発明は粒径が10〜150μm
である炭水化物及び/又は炭水化物誘導体10〜40重
量%と被膜増強剤2〜20重量%及び分散剤0.1〜2
0重量%を基油中へ分散してなることを特徴とする。
【0006】本発明は上記3成分が特定の比率で基油中
に含まれる時に初めて本発明の効果が認められるもので
あり、1成分でも欠けていたり、比率が逸脱していると
その効果は得られない。
【0007】
【作用】本発明によると温間にて鍛造加工を行う際或い
は熱間にて鍛造、圧延、製管、引抜き、押し出し加工す
る際、潤滑条件が苛酷な温間鍛造について説明すれば金
型表面に黒鉛油中分散型潤滑油のような潤滑性及び熱安
定性を有し、金型内に堆積物が累積して生ずる、所謂欠
肉と言われているものを生じない潤滑被膜を形成し、し
かも作業環境の点より淡色な被膜とする為には、特定の
炭水化物及び/又は炭水化物誘導体と、被膜増強剤を特
定の割合にて混合したものを耐熱性のある基油中へ、特
定の油溶性分散剤にて分散させる事により得られる。
【0008】本発明で上記3成分を添加する基油として
は潤滑性を有し常温にて液体であることはもとより加工
物(200〜1200℃)に接しても燃え難いこと及び
金型表面(150〜500℃)へ均一に付着することが
必要である。例えば、引火点が250℃以上の精製鉱
油、ポリα−オレフィン、ポリフェニルエーテル、高級
脂肪酸グリセリンエステル(例えばナタネ白絞油、精製
コメヌカ油等)、高級脂肪酸トリメチロールプロパンエ
ステル(例えばトリメチロールプロパンオレイン酸トリ
エステル、トリメチロールプロパン・イソステアリン酸
トリエステル等)、高級脂肪酸ペンタエリスリトールエ
ステル(例えばペンタエリスリトール・オレイン酸ジエ
ステル、ペンタエリスリトール・イソステアリン酸フル
エステル等)、ヒンダードコンプレックスエステル(商
品名:ユニスターC−3373H,日本油脂)等及びこ
れらの混合物が挙げられるがこれに限定している訳では
ない。
【0009】本発明の第1番目の成分である炭水化物及
び/又は炭水化物誘導体としては化学構造の骨格が炭水
化物であり分子量が5,000以上のものすべてを含
む。分子量は120,000以上がより好ましい。特に
好ましいものとして炭水化物は米、小麦、とうもろこ
し、タピオカ、馬鈴薯から得た澱粉又は木材繊維のセル
ロースであり、炭水化物誘導体はそれらの澱粉燐酸エス
テル・アルカリ金属塩、セルロース燐酸エステル・アル
カリ金属塩が挙げられる。尚、アルカリ金属はリチウ
ム、ナトリウム、カリウムが好ましいが経済性の点より
特にナトリウムが適当である。炭水化物または炭水化物
誘導体は単独にて用いてもよく、炭水化物と炭水化物誘
導体を併用してもよい。
【0010】炭水化物及び/又は炭水化物誘導体の温間
鍛造加工時の作用機構は定かではないが、黒鉛のような
耐熱性とへき開性はない為単体では黒鉛の潤滑性より劣
るものの、10〜150μmの粒径を用いること及び本
発明の第2番目の成分である被膜増強剤と併用すること
により、上記の加工に必要な潤滑膜を均一で厚く形成出
来、黒鉛と同等かそれ以上の鍛造成形性を示すものと考
える。ここで、鍛造成形性とは加工物の形状寸法が規定
通りに得られ、しかも金型寿命も目標値以上になるよう
な潤滑油の性能を意味する。粒径としては10〜150
μmが望ましい。市場にてこの範囲の粒径を得る場合、
澱粉は米、小麦、とうもろこし、タピオカ、馬鈴薯等か
ら得たものがこれに相当する。セルロースはパルプ等を
酸加水分解、濾過水洗、脱水、乾燥、粉砕後に200か
ら400メッシュの篩にて篩別したものが適当である
が、これに限定しているわけではない。10μm未満で
は、形成される潤滑被膜が薄く、黒鉛に比べ早く燃え尽
きてしまう為か、鍛造成形性がない。150μmを超え
ると金型へ給油する時にスプレー不良を生じ好ましくな
い。特に好ましい粒径は平均粒径が20〜50μmであ
り、金網により篩分けする時は400メッシュ(37μ
m)通過品が適当である。
【0011】炭水化物及び/又は炭水化物誘導体の潤滑
油中への含有量は10〜40重量%とする。10重量%
未満では鍛造成形性に劣り、40重量%を超えると潤滑
油の流動性がなくなり給油する時にスプレー不良を生じ
る。尚、市販の炭水化物及び/又は炭水化物誘導体には
水分を含有しているものが多い。水分が多いと潤滑油自
体の金型への付着性を低下させるので好ましくない。し
かし、潤滑油の燃焼抑制の為、適度に水分を含有するの
が効果的である。水分は炭水化物及び/又は炭水化物誘
導体に対し1〜7%が好ましい。
【0012】本発明の第2番目の成分である被膜増強剤
とは、炭水化物及び/又は炭水化物誘導体と併用するこ
とにより炭水化物及び/又は炭水化物誘導体単体に比
べ、耐熱性、極圧潤滑性の優れた強靭な潤滑被膜を形成
し優れた鍛造成形性を発現させるものを言う。具体的に
はジアルキルジチオカルバミン酸(アルキル基:C3
8 )、2−メルカプトベンゾチアゾール、イソプロピ
ルキサントゲン酸、ジアルキルジチオ燐酸(アルキル
基:C3 〜C8 )の金属塩(金属が亜鉛、モリブデン、
カルシウム)、硫化ラード、ジ・ターシャリードデシル
ポリサルファイド等の有機化合物、硫黄等の元素、硫化
錫、硫酸カルシウム、硫酸バリウム、ピロ燐酸錫、ピロ
燐酸カルシウム、ヘキサメタ燐酸カルシウム、ピロ燐酸
カリウム、トリポリ燐酸カリウム、メタ燐酸カリウム等
の縮合燐酸カリウム、酸化亜鉛、酸化モリブデン、炭酸
亜鉛、炭酸カルシウム、モリブデン酸亜鉛、モリブデン
酸カルシウム等の無機化合物及びこれらの混合物が挙げ
られる。好ましくはジブチルジチオカルバミン酸、ジブ
チルジチオ燐酸の金属塩(金属が亜鉛、モリブデン、カ
ルシウム)、硫黄分が15〜30重量%の含有した硫化
ラード、粉末硫黄、モリブデン酸亜鉛、モリブデン酸カ
ルシウム、炭酸亜鉛、炭酸カルシウム、硫酸カルシウ
ム、ピロリン酸カルシウム、トリポリ燐酸カルシウム並
びにこれらの混合物が挙げられる。尚、モリブデン酸塩
について工業的には例えば酸化亜鉛とモリブデン酸亜
鉛や酸化カルシウムあるいは炭酸カルシウムとモリブ
デン酸カルシウムとの混晶粒子となっているような塩基
性塩があり、これらも有効である。
【0013】被膜増強剤は単体では炭水化物及び/又は
炭水化物誘導体より鍛造成形性がない。炭水化物及び/
又は炭水化物誘導体と併用する事により鍛造成形性が向
上する理由は定かではないが、大別すると二つに分けら
れると考える。有機化合物及び元素は所謂極圧剤あるい
は耐摩耗剤としての作用により、焼きつきの防止あるい
は成形時の金型表面温度の低下に寄与し金型の寿命延長
が期待される。無機化合物は炭水化物及び/又は炭水化
物誘導体の燃焼温度及び時間を黒鉛により近づけ、特
に、鍛造加工の場合は、成形時は無論のこと加工物を金
型から離型する(ノックアウト)時まで潤滑被膜を保持
し、所謂強靭な潤滑被膜の難燃効果あるいは断熱効果に
より金型表面の焼きつきや軟化を防ぎ金型の寿命延長が
期待されるのではないかと考える。尚、無機化合物は粒
径が5μm以下であると鍛造成形性の向上が顕著とな
る。0.5μm以下であるとなお好ましい。有機化合物
あるいは無機化合物を各々単独で用いても被膜増強剤と
しての効果は期待されるが有機化合物と無機化合物の併
用は一層好ましい。被膜増強剤の潤滑油中への含有量は
2〜20重量%とする。2重量%未満では鍛造成形性の
向上が顕著に認められず、20重量%を超えると潤滑油
自体の圧送性及びスプレー性に支障が生じる。炭水化物
及び/又は炭水化物誘導体に対する被膜増強剤の比率は
2〜8:1が好ましい。
【0014】本発明の第3番目の成分である分散剤とし
ては、耐熱性があり、炭水化物及び/又は炭水化物誘導
体と被膜増強剤を基油中へ安定に分散させる他、金型に
対し均一な被膜を形成させるすべての油溶性分散剤を包
含する。代表例としてはカルシウム・スルフォネート、
カルシウム・フェネート、炭素数12〜22の直鎖ある
いは分枝鎖モノカルボン酸ソルビタントリエステル、炭
素数12〜22の直鎖あるいは分枝鎖モノカルボン酸蔗
糖エステル、炭素数12〜22の直鎖あるいは分枝鎖モ
ノカルボン酸デキストリンエステル(例えばデキストリ
ンパルミチン酸エステル)、炭素数12〜22の直鎖あ
るいは分枝鎖モノカルボン酸セルロースエステル(例え
ばセルロースステアリン酸エステル)、炭素数12〜2
2の直鎖あるいは分枝鎖モノカルボン酸澱粉エステル等
及びこれらの混合物が挙げられるが、これに限定してい
る訳ではない。尚、スルフォネート及びフェネートは中
性よりアルカリ価(TBN)がKOH/mg換算で10
以上、好ましくは20〜400が最良である。モノカル
ボン酸は耐熱性の点より飽和脂肪酸が特に好ましく、炭
素数は16〜18個が最良である。油溶性分散剤の潤滑
油中への含有量は0.1〜20重量%が好ましい。0.
1重量%未満では均一分散性が不足し20重量%を超え
ては鍛造成形性の不足や組成物の流動性不足が生じいず
れも適当でない。
【0015】本発明においては上記の成分以外に公知の
添加剤、例えば窒化硼素、セリサイト、滑石、燐酸亜
鉛、燐酸カリウム、燐酸水素カルシウム、燐酸水素リチ
ウム、硼酸、硼酸ナトリウム、珪酸ナトリウム、ステア
リン酸亜鉛、ステアリン酸アルミニウム、牛脂脂肪酸カ
ルシウム、イソフタル酸アルミニウム、トリメリット酸
カルシウム、等の粉体類及びポリメタクリレート、ポリ
イソブチレン等の付着向上剤並びに市販の酸化防止剤、
難燃剤を適宜併用して使用する事が出来る。
【0016】本発明の潤滑油の製造方法は第1段階で基
油中へ油溶性分散剤を均一に溶解又は分散させる。油溶
性分散剤が粉体の時は最高温度110℃以下で加熱溶解
又は分散させる。次に炭水化物及び/又は炭水化物誘導
体と被膜増強剤を徐々に添加しつつ混合攪拌してスラリ
ー状の組成物を得る。第2段階にで3本ロールあるいは
モントンゴーリン・ホモジナイザーを用いて均一分散を
完了し製品が得られる。尚、この方法は一例であり、こ
れに限定するものではない。かようにして、得られた本
発明の潤滑油は原液の状態で金型へスプレー給油して使
用する。
【0017】
【実施例】次に本発明を特に、加工条件が苛酷な温間鍛
造加工にて、実施例及び比較例により説明する。 実施例1 表1に示す組成の成分を用い、以下に示す方法で実施例
1の潤滑油を製造した。基油である精製鉱油33.0重
量部とペンタエリスリトール・オレイン酸ジエステル2
0.0重量部の中に分散剤であるセルロースステアリン
酸エステル2.0重量部を加え100℃にて攪拌機を用
いて加熱攪拌し均一分散した後、カルシウムスルフォネ
ート5.0重量部を加え均一分散させた。次に残りの成
分である馬鈴薯澱粉リン酸エステルナトリウム30.0
重量部とジブチルジチオカルバミン酸モリブデン10.
0重量部を順次添加した後、全体をスラリー状にした。
このスラリーをモントンゴーリンホモジナイザーで35
0kgf/cm2 にて2パスして実施例1の潤滑油を得
た。
【0018】実施例2,3,5〜8,10,11 表1に示す基油、炭水化物、被膜増強剤および油溶性分
散剤を表示する配合量で、実施例1に示す方法と同様に
操作して実施例2,3,5〜8,10および11の潤滑
油を得た。
【0019】実施例4 基油である精製鉱油30.0重量部とペンタエリスリト
ール・オレイン酸ジエステル15.0重量部とユニスタ
ーC−3373H 30.0重量部の混合油中に分散剤
であるカルシウムフェネート10.0重量部を加え攪拌
機にて均一分散後、残りの成分であるタピオカ澱粉リン
酸エステルナトリウム10.0重量部とジブチルジチオ
カルバミン酸モリブデン5.0重量部を順次添加した
後、全体をスラリー状にした。このスラリーをモントン
ゴーリンホモジナイザーで350kgf/cm2 にて2
パスして実施例4の潤滑油を得た。
【0020】実施例9 表1に示す基油、炭水化物、被膜増強剤および油溶性分
散剤を表示する配合量で実施例4に示す方法と同様に操
作して実施例9の潤滑油を得た。
【0021】比較例1 基油である精製鉱油29.0重量部とペンタエリスリト
ール・オレイン酸ジエステル40.0重量部の混合油中
に木材繊維のセルロース粉末20.0重量部とモリブデ
ン酸カルシウム10.0重量部と炭酸カルシウム1.0
重量部を順次添加した後、全体をスラリー状にした。こ
のスラリーをモントンゴーリンホモジナイザーで350
kgf/cm2 にて2パスして比較例1の潤滑油を得
た。
【0022】比較例2〜9 実施例4の油溶性分散剤であるカルシウムフェネートを
カルシウムスルフォネートに置き換え、表2に示す配合
成分を用いて実施例4と同様の方法で比較例2〜9の潤
滑油を得た。
【0023】上記実施例1〜11および比較例1〜9で
得た潤滑油の試料及び更に比較の為、市販黒鉛油中分散
型潤滑油(比較例10)及び市販黒鉛水中分散型潤滑油
(比較例11)の試料につき、次に示す試験法により性
能試験を行い、得た結果を表1及び表2に併記する。
【0024】性能試験による確認 1.成形性:実験室(SRV試験) Schwingungs Reib und Verschieiss Tester を用いて鍛
造成形性のスクリーニング試験を行う。実機により近づ
ける為、下記の条件にて運転し、摩擦係数を求める。 (試験条件) 試験片 ボール(SUJ−2:金型想定)、シリンダー(S45C: 加工物想定) 荷重 100N(ヘルツ圧222kgf/mm2 ) すべり速度 240mm/sec 温度 750℃ 時間 10sec (評 価) 実機との対応で、摩擦係数=0.10以下であること。
【0025】2.成形性:実験室(後方押し出し試験) 小型鍛造機を用い、下記条件にて鍛造し、加工時の荷重
(トン)と加工物の底厚(mm)の関係から鍛造成形性
を判断する。荷重及び加工物の底厚共、小さい値の方が
好ましい。 (試験条件) 鍛造機 160トン・メカニカルプレス 試験片 S45C(直径30mm、厚さ16mm、温度700℃) 速度 32.5mm/sec 減面率 70%(パンチ直径25mm) 底厚設定 実施例10の試料で加工後の底厚が3.30mmになるよう にする。 (評 価) 実機との対応で、底厚3.32mm以下、荷重75トン
以下であること。
【0026】3.成形性:実機試験 等速ジョイントの部品について1〜3工程まで前方押し
出し、4工程では後方押し出し温間加工をしている。鍛
造成形性の評価としては加工後の部品が規定の寸法内に
あることと金型寿命を見る。 (評 価) ○:規定寸法の部品が得られ、金型寿命も実施例10の試料と 同等かそれ以上である。 □:規定寸法の部品が得られるが、金型寿命は実施例10の試 料の80%である。 △:規定寸法の部品は得られたが、金型寿命が80%未満であ る。 ×:規定寸法の部品が得られなかった。
【0027】4.スプレー性:実機試験 プランジャーポンプにて100〜200kgf/cm2
の圧力にてエアレススプレーした時に規定の流量が得ら
れる他、スプレー角度が確保出来ているか否かを確認す
る。 (評 価) ○:規定の流量が得られ、スプレー角度が確保出来た。 ×:ノズル詰まり等で規定の流量が確保出来ない。
【0028】5.ダイセットの汚れ:実機試験 余分に供給された試料がダイセット上へ黒色(特に黒鉛
含有油)に付着したり、試料が重合して流動性を失いヘ
ラにて除去しようとしても取れない等作業環境を汚染す
るか否かを観察する。 (評 価) ○:作業環境を汚染しない。 ×:ダイセット上が黒く汚れたり、重合膜を形成する。
【0029】6.消火性:実機試験 金型へ給油した試料は金型内へ加工物が置かれた時に引
火し燃焼する場合がある。但し、圧縮空気を用いて速や
かに炎を消している。ここでは引火しても速やかに消え
るか否かを見る。 (評 価) ○:引火し燃焼しても、すぐ消える。 ×:引火し燃焼後、圧縮空気でも消えない。
【0030】7.総合評価 スプレー性、成形性、ダイセットの汚れ、消火性の4項
目とも「○」であることが温間鍛造加工用潤滑油として
必要である。
【0031】
【表1】
【0032】
【表2】
【0033】
【発明の効果】以上説明してきたように本発明の潤滑油
は、特定の炭水化物誘導体と、被膜増強剤と、油溶性分
散剤を特定な比率で基油中へ分散させることにより表1
及び表2からも明らかなように比較例1〜11と比べ、
黒鉛等の黒色成分を使用していないので作業環境を改善
し、鍛造成形性及びその他の性能は市販黒鉛油中分散型
潤滑油(比較例10)と同等かそれ以上である事が示さ
れている。従って、ここに本発明の潤滑油は黒鉛系潤滑
油に代わって作業環境を改善した潤滑油である事が確認
された。
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 C10M 135:18 137:10 125:10 125:22 135:06) C10N 10:02 10:04 10:12 20:06 30:00 30:04 30:06 40:24 (72)発明者 横溝 均 神奈川県藤沢市辻堂神台1の4の1 協 同油脂株式会社辻堂工場内 (72)発明者 三田村 一広 神奈川県横浜市神奈川区宝町2番地 日 産自動車株式会社内 (72)発明者 川井 俊紀 神奈川県横浜市神奈川区宝町2番地 日 産自動車株式会社内 (56)参考文献 特開 昭50−140350(JP,A) 特開 昭54−143409(JP,A)

Claims (4)

    (57)【特許請求の範囲】
  1. 【請求項1】 油中分散型非黒鉛系潤滑油であって、粒
    径が10〜150μmである炭水化物及び/又は炭水化
    物誘導体10〜40重量%と被膜増強剤2〜20重量%
    と油溶性分散剤0.1〜20重量%を基油中へ分散して
    なることを特徴とする油中分散型非黒鉛系潤滑油。
  2. 【請求項2】 前記炭水化物が米、小麦、とうもろこ
    し、タピオカ、馬鈴薯から得た澱粉または木材繊維のセ
    ルロースであり、炭水化物誘導体が澱粉燐酸エステル・
    アルカリ金属塩またはセルロース燐酸エステル・アルカ
    リ金属塩またはこれらの混合物からなることを特徴とす
    る請求項1記載の油中分散型非黒鉛系潤滑油。
  3. 【請求項3】 前記被膜増強剤がジブチルジチオカルバ
    ミン酸、ジブチルジチオ燐酸の金属塩(金属が亜鉛、モ
    リブデン、カルシウム)、硫黄分を15〜30重量%含
    有した硫化ラードの有機化合物、粉末硫黄の元素、モリ
    ブデン酸亜鉛、モリブデン酸カルシウム、炭酸亜鉛、炭
    酸カルシウムの無機化合物またはこれらの混合物からな
    ることを特徴とする請求項1記載の油中分散型非黒鉛系
    潤滑油。
  4. 【請求項4】 前記油溶性分散剤がカルシウム・スルフ
    ォネート、カルシウム・フェネート、炭素数12〜22
    の直鎖あるいは分枝鎖モノカルボン酸蔗糖エステル、炭
    素数12〜22の直鎖あるいは分枝鎖モノカルボン酸デ
    キストリンエステル、炭素数12〜22の直鎖あるいは
    分枝鎖モノカルボン酸セルロースエステル、炭素数12
    〜22の直鎖あるいは分枝鎖モノカルボン酸澱粉エステ
    ルまたはこれらの混合物からなることを特徴とする請求
    項1記載の油中分散型非黒鉛系潤滑油。
JP5041271A 1993-03-02 1993-03-02 油中分散型非黒鉛系潤滑油 Expired - Fee Related JP2586871B2 (ja)

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US08/201,992 US5460737A (en) 1993-03-02 1994-02-25 Graphite-free lubricating oil
DE69420600T DE69420600T2 (de) 1993-03-02 1994-03-01 Graphitfreies Schmieröl
ES94400428T ES2138055T3 (es) 1993-03-02 1994-03-01 Aceite lubricante libre de grafito.
EP94400428A EP0613939B1 (en) 1993-03-02 1994-03-01 Graphite-free lubricating oil

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ES2138055T3 (es) 2000-01-01
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EP0613939A3 (en) 1994-09-14
US5460737A (en) 1995-10-24
DE69420600T2 (de) 2000-03-16
EP0613939A2 (en) 1994-09-07
DE69420600D1 (de) 1999-10-21

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