JP3017803B2 - 耐火性作動液組成物 - Google Patents

耐火性作動液組成物

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Publication number
JP3017803B2
JP3017803B2 JP3515619A JP51561991A JP3017803B2 JP 3017803 B2 JP3017803 B2 JP 3017803B2 JP 3515619 A JP3515619 A JP 3515619A JP 51561991 A JP51561991 A JP 51561991A JP 3017803 B2 JP3017803 B2 JP 3017803B2
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Prior art keywords
fluid
hydraulic fluid
hydraulic
polyalkylene glycol
vinyl ester
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JP3515619A
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JPH06500587A (ja
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アール． ミラー，フィリップ
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ゲイトウエイ アディティブ カンパニー
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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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/225—Heterocyclic nitrogen compounds the rings containing both nitrogen and oxygen
    • C10M2215/226—Morpholines
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/28—Amides; Imides
    • 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
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/30—Heterocyclic compounds
    • 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
    • C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
    • C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
    • C10M2219/066—Thiocarbamic type compounds
    • C10M2219/068—Thiocarbamate metal salts
    • 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
    • C10M2219/085—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms containing carboxyl groups; Derivatives thereof
    • 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
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • 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
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C10M2219/102—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon only in the ring
    • 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
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
    • 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
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
    • C10M2219/106—Thiadiazoles
    • 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
    • C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
    • C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
    • C10M2219/108—Phenothiazine
    • 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
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • 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
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/042—Metal salts thereof
    • 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
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/045—Metal containing thio derivatives
    • 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
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/12—Groups 6 or 16
    • 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
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/08—Hydraulic fluids, e.g. brake-fluids

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Lubricants (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Description

【発明の詳細な説明】 本発明は概して、油圧装置（hydraulic system,液圧
システム）へ作動液（hydraulic fluid,制御液）組成物
を添加することを含む、その油圧装置へ難燃性、加水分
解安定性及び減少摩耗特性を与える方法に関する。
従来は、流体の耐炎性に関する工場相互調査（the Fa
ctory Mutual Research）第Ｉ群、第6930類承認（いわ
ゆる“FM承認”）を充分満たす耐火性を得るためには、
一般にポリアルキレングリコールをベースとする作動液
は中に水が存在することを必要とした。水は作動液中の
添加剤としていくつかの理由で、最も顕著には水の蒸気
圧によって付与される操作圧制限により、そして液圧シ
ステムの金属表面上の水により生ずる腐食の問題により
望ましくない。
ポリアルキレングリコールをベースとする作動液中の
水系添加剤の使用のかわりとして、ポリオールエステル
タイプの流体、例えばトリメチロールプロパンのトリオ
レイン酸エステルでは典型的には、FM承認を取得するた
めに、高分子量重合体抗ミスト添加剤を用いている。残
念ながらこの様な抗ミスト剤は、使用中ずっと作動液が
通常受けている剪断力によって劣化し易い。従ってこの
様な先行技術の抗ミスト添加剤を含有する作動液は、作
動液が使用されている個々の使用例での運転条件や使用
要件に依存して、２〜３ヶ月かそれ以下と比較的短い寿
命になり易い。さらにポリオールエステルタイプの潤滑
剤基剤はまた一定の条件下で加水分解をうけ易く、それ
により作動液の性能特性が変わる可能性がある。
上記のゆえに、難燃性と剪断安定性との向上した組み
合わせを示す新しい非水性作動液が、作動液製造業界で
切望されている。
本発明は、油圧装置へ作動液組成物を添加することを
含む、その油圧装置へ難燃性、加水分解安定性及び減少
摩耗特性を与える方法において、 その作動液組成物は、（ａ）ポリアルキレングリコー
ルベース流体、及び（ｂ）約5,000〜約100,000の分子量
を有し、該ポリアルキレングリコールベース流体に可溶
な、抗ミスト添加剤としてのアルキレン−ビニルエステ
ル共重合体を含み； 該共重合体中のアルキレン基対ビニルエステル基の比
は、約1:10〜約10:1であり；しかも、 前記抗ミスト添加剤は、該作動液組成物中の抗ミスト
添加剤とポリアルキレングリコールベース流体との合計
量に基づいて約0.1〜約20重量％の量で存在する、上記
方法に関する。
これらの、そして他の点は以下の本発明に関する詳細
な記載を読むことにより明白になるであろう。
本発明によれば、優れた耐摩耗性ならびに使用中の時
間にわたっての向上した難燃性を提供する作動液組成物
が得られることができることが今や驚くべきことに見い
出された。本作動液はポリアルキレングリコールがベー
スとされており、そしてポリオールエステルタイプの作
動液で使用されているものに対して向上した剪断安定性
を示す抗ミスト剤を含有している。
本発明の作動液においてベース流体として有用なポリ
アルキレングリコール類は、一般に、例えば低級アルカ
ノールのアルカリ金属塩開始剤を用いてアニオン性、も
しくはカチオン性触媒作用をうける。例示例は水酸化カ
リウム触媒作用のブタノール開始ポリプロピレングリコ
ールである。モノオール、ジオール、トリオール等を包
含する種々のポリアルキレングリコールが当業界に周知
であり、そして例えば、オリンコーポレーション（Olin
Corporation）のPOLY-G、ユニオンカーバイトコーポレ
ーション（Union Carbide Corporation）のUCON、ビー
エーエスエフコーポレーション（BASF Corporation）の
PLURACOLを含む種々の商標で市販されている。
本発明で有用な抗ミスト添加剤は約5,000〜約100,000
の分子量を有するアルキレン−ビニルエステル共重合体
であり、その中でもアルキレン化合物はエチレン、プロ
ピレン、ブチレン及びそれらの組み合わせからなる群か
ら選ばれるのが望ましい。共重合体は、その共重合体が
ベース流体中に可溶性であるという条件下で、約1:10〜
約10:1であるアルキレン基対ビニルエステル基の比を有
するランダムまたはブロックタイプの共重合体であり得
る。最も好ましい共重合体はオハイオ州クリーブランド
のファンクショナルプロダクツコーポレーション（Func
tional Products Corporation）のV-152として市販され
ているエチレン−ビニルエステル共重合体である。共重
合体は例えば米国特許第3,254,063号及び同第3,591,502
号に開示されている既知のエチレン−ビニルエステル共
重合法を用いて適当に合成される。
例示としてはアルキレン−ビニルエステル共重合体
は、アルキレン化合物（例えばエチレン、プロピレン、
ブチレンまたはそれらの組み合わせ）を、共重合可能な
不飽和ケトンと共重合させることによって適当に造られ
る。適当なケトンとして、例えば、ビニルメチルケト
ン、ビニルｎ−オクチルケトン、ビニルイソオクチルケ
トン、ビニルドデシルケトン、ビニルシクロヘキシルケ
トン、３−ペンテン−２−オン及びそれらの組み合わせ
を包含する。ケトンに対するアルキレン化合物のモルパ
ーセントは、共重合体を生成するのに使われるアルキレ
ン化合物とケトンとの合計量に基いて５〜80パーセント
が適している。
本発明の作動液中の抗ミスト添加剤の量は、作動液中
の抗ミスト添加剤とベース流体との合計量に基づいて好
ましくは約0.1重量パーセント〜約20重量パーセント、
さらに好ましくは約0.5重量パーセント〜約10重量パー
セントである。
本発明の作動液は、その作動液がその液の重量に基づ
いて５重量パーセントより多くない、好ましくは２重量
パーセントより多くない水を含有する様に意図される、
非水性、即ち“本質的に水を含まない。” 本発明の組成物においては、望ましい難燃性と耐摩耗
性を提供するために、成分（ａ）と成分（ｂ）との両方
が存在することが必須である。追加の任意添加剤が要望
に応じて適当に使用され、例えば本発明の機能性流体は
通常きわめて少量、典型的には約0.01〜約5.0重量パー
セントの、防錆剤及び酸化防止剤、腐食防止剤、金属不
動態化剤、耐摩耗剤、そして他に特別の目的を有する添
加剤の様な、作動液や潤滑剤を配合する際に通常導入さ
れるタイプの種々の添加剤を通常含有する。
適切に利用される防錆剤、腐食防止剤及び金属不動態
化剤は、トリルトリアゾール、ベンゾチアゾール、ベン
ゾトリアゾール及びそれらの誘導体、亜燐酸アルキル、
亜燐酸アリール、サルコシン、及びコハク酸誘導体を包
含する。酸化防止剤はジアルキルチオジプロプリオナー
ト、例えばジラウリルチオジプロプリオナート等、有機
アミン、例えばジオクチルジフェニルアミン、フェニル
ナフチルアミン、ヒンダードフェノール類、フェノチア
ジン等がある。耐摩耗添加剤はジチオホスファート、ア
ミンホスフィト、有機モリブデン化合物、ホスホロチオ
ナート、カルバマート等がある。この様な任意の添加剤
の適合性は運転条件と作動液が使われている特定の場合
の使用要件により左右される。前記の要件以外は存在す
べきこれら各成分の相対的割合及び最大量、そしてその
組み合わせは本発明では重要ではない。経済的要因はま
た、使用する最適量を決めるのに役立つ。使用される場
合、任意の添加剤は作動液の合計重量に基づいて約40重
量パーセントまでの量で適当に使用される。
本発明の作動液組成物は、40℃で約15〜約3000センチ
ストークスの粘度を有するのが好ましい。
以下の例は本発明を詳説するものであるが、本発明の
範囲を制限するものではない。
例１ 作動液の調製とそのポンプ試験 本発明の範囲にある作動液組成物は以下の配合を用い
て、以下の方法に従って造られた： 成分量配合成分 重量部 POLY-G WI-285 95.8 （ブタノール開始ポリプロピレングリコール） フェノチアジン 0.5 V-152（エチレン−ビニルエステル共重合体） 3.0 トリフェニルホスホロチオナート 0.5 チバガイキー社製 IRGALUBE 349 0.2 市販ポリオールエステル作動液、即ち、ペンシルバニ
ア州バレーフォージのイーエフホートン社（E.F. Hough
ton Co.）製コスモルブリックHF 130を比較対照品とし
て使用した。
特定の流体の使用から生ずるポンプ摩耗の程度を測定
するために、ASTM-D2882に従って、実験室での作動液ポ
ンプテストを使用して配合物を試験した。要するに、本
試験は以下のとおりにして行なわれる。
５ガロンの作動液がポンプの速度1200±60回転／分、
ポンプ出口部圧力2000±40psiで回転羽根ポンプシステ
ム中を100時間循環される。ポンプ入口部での流体の温
度は150±５°Ｆである。この試験中に減少したカムリ
ングと羽根12の重さの和が得られる結果となる。
数回のポンプ摩耗試験の結果が0.1mg〜10.0mgの範囲
にわたったことから、本流体は特に優れた性能の作動液
であることを示す。それと較べて、ポリオールエステル
作動液の摩耗量は100時間の摩耗テストの間で2.0mg〜15
mgの重量範囲にわたる減少となった。
耐火性を試験するために工場相互調査（the Factory
Mutual Research）第II群、第6930類の試験手順に従っ
て、作動液の試験をまた行った。簡単に言えば、本試験
は以下の様に行なわれた。
作動液試料を鋼鉄製容器に入れ140゜Fに加熱し、そし
て窒素で1000psig迄加圧する。試料を100psiで1.5ガロ
ン／時に調節した80°中空円錐HAGOオイルバーナーノズ
ルから離れた開放されている場所へ流し出す。この装置
は以下に記述する炎伝播試験と高熱表面試験の両方に用
いられる。
炎伝播試験 プロパントーチをノズルの先端から６イン
チ及び18インチの位置で各々の作動液の噴霧中に導く。
各距離で着火を10回行い、すべての得られた流体着火は
時間を記録する。10回の試験のうち、５秒以上続く燃焼
はすべて失敗とみなす。
高熱表面着火試験 水平面から30°傾いた両側に熱遮蔽
物を持つ鋼鉄製溝形鋼を、２基のプロパン−空気バーナ
ーで1300゜Fまで下方から加熱する。バーナーを消して流
体を６インチの距離で60秒間流し出す。もし発火したら
流体は流れることになる。しかし、高熱表面から離れて
いるときには炎は噴霧の後を追うことはない。
耐火試験の結果から本発明のポリアルキレングリコー
ル含有組成物は試験に合格し、比較対照であるポリオー
ルエステル類の流体よりも少なくとも３倍の期間（ポン
プテストで、比較対照流体が平均８時間以内に対して24
時間）耐火性を保持することが明らかになった。これは
ASTM D2882ポンプテスト中に上記２種の流体の定期的サ
ンプル採取に基づいている。このポンプ一式の一部とし
て使用した機器には圧力制御バルブがあり、それゆえ極
度に剪断性の高い条件を創り出すことができ、そのよう
な条件は通常、現場にある設備では実験できないことに
注目すべきである。また、本耐火試験を上記類似配合の
ものに、ブタノール開始ポリプロピレングリコールをポ
リプロピレングリコールジオールに置き換えて、施した
ことも述べておく。この類似配合のものも耐火試験に合
格した。
比較対照流体で使用されている添加剤に比較して、本
発明で使用されている抗ミスト剤の分子量の欠損を測定
するためにGPCによって本流体の分析も行った。本発明
の添加剤はポンプ中での時間に伴い分子量は低下した。
しかし、時間に対して作動液配合中の濃度は大きく変わ
らなかった。対照的に、比較対照流体ではポンプテスト
の間に、ポンプ中で時間とともに分子量と比較対照流体
中の濃度の両方が低下した。
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｃ１０Ｎ 30:00 30:06 40:08 (58)調査した分野(Int.Cl.7，ＤＢ名) C10M 169/04 C10M 107/34 C10M 145/08 C10N 30:00 C10N 40:08

Claims (4)

    (57)【特許請求の範囲】
  1. 【請求項１】油圧装置へ作動液組成物を添加することを
    含む、該油圧装置へ難燃性と減少摩耗特性とを与える方
    法において、該作動液組成物は、 （ａ）ポリアルキレングリコールベース流体、及び （ｂ）5,000〜100,000の分子量を有し、該ポリアルキレ
    ングリコールベース流体に可溶な、抗ミスト添加剤とし
    てのアルキレン−ビニルエステル共重合体 を含み；該共重合体中のアルキレン基対ビニルエステル
    基の比は、1:10〜10:1であり；しかも、前記抗ミスト添
    加剤は、該作動液組成物中の抗ミスト添加剤とポリアル
    キレングリコールベース流体との合計量に基づいて0.1
    〜20重量％の量で存在する、上記方法。
  2. 【請求項２】ポリアルキレングリコールベース流体が、
    ポリエチレングリコール、ポリプロピレングリコール、
    ポリブチレングリコール及びそれらの組み合わせからな
    る群から選ばれる、請求項１記載の方法。
  3. 【請求項３】アルキレン−ビニルエステル共重合体が、
    エチレン、プロピレン、ブチレン及びそれらの組み合わ
    せからなる群から選ばれるアルキレン部分を用いる、請
    求項１記載の方法。
  4. 【請求項４】ポリアルキレングリコールベース流体が低
    級アルカノール開始ポリアルキレングリコールである、
    請求項１記載の方法。
JP3515619A 1990-08-31 1991-08-06 耐火性作動液組成物 Expired - Fee Related JP3017803B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US57630190A 1990-08-31 1990-08-31
US576,301 1990-08-31
PCT/US1991/005573 WO1992004428A1 (en) 1990-08-31 1991-08-06 Fire resistant hydraulic fluid composition

Publications (2)

Publication Number Publication Date
JPH06500587A JPH06500587A (ja) 1994-01-20
JP3017803B2 true JP3017803B2 (ja) 2000-03-13

Family

ID=24303839

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JP3515619A Expired - Fee Related JP3017803B2 (ja) 1990-08-31 1991-08-06 耐火性作動液組成物

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JP (1) JP3017803B2 (ja)
KR (1) KR0157643B1 (ja)
AU (1) AU8530791A (ja)
DE (1) DE69127754T2 (ja)
ES (1) ES2106085T3 (ja)
WO (1) WO1992004428A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011125679A1 (ja) 2010-03-31 2011-10-13 出光興産株式会社 難燃性能を有する生分解性潤滑油組成物

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2006288962B2 (en) * 2005-09-09 2011-08-25 Castrol Limited Method of monitoring fire resistance of hydraulic fluids

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499723A (en) * 1947-07-28 1950-03-07 Du Pont Lubricants containing copolymers of ethylene and vinyl acetate
NL134313C (ja) * 1966-06-01
DE1914756C3 (de) * 1968-04-01 1985-05-15 Exxon Research and Engineering Co., Linden, N.J. Verwendung von Ethylen-Vinylacetat- Mischpolymerisaten für Erdöl-Destillate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011125679A1 (ja) 2010-03-31 2011-10-13 出光興産株式会社 難燃性能を有する生分解性潤滑油組成物

Also Published As

Publication number Publication date
DE69127754D1 (de) 1997-10-30
EP0547127A1 (en) 1993-06-23
EP0547127B1 (en) 1997-09-24
WO1992004428A1 (en) 1992-03-19
KR0157643B1 (ko) 1999-02-18
AU8530791A (en) 1992-03-30
JPH06500587A (ja) 1994-01-20
EP0547127A4 (en) 1993-11-24
ES2106085T3 (es) 1997-11-01
DE69127754T2 (de) 1998-04-30

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