JPWO2018066700A1 - 潤滑油組成物、冷凍機用組成物及び漏洩箇所の検出方法 - Google Patents
潤滑油組成物、冷凍機用組成物及び漏洩箇所の検出方法 Download PDFInfo
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- JPWO2018066700A1 JPWO2018066700A1 JP2018543992A JP2018543992A JPWO2018066700A1 JP WO2018066700 A1 JPWO2018066700 A1 JP WO2018066700A1 JP 2018543992 A JP2018543992 A JP 2018543992A JP 2018543992 A JP2018543992 A JP 2018543992A JP WO2018066700 A1 JPWO2018066700 A1 JP WO2018066700A1
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- Prior art keywords
- lubricating oil
- oil composition
- composition
- refrigerator
- oil
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- 238000000034 method Methods 0.000 title description 11
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- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 12
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- 125000004432 carbon atom Chemical group C* 0.000 claims description 24
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Classifications
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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
- C10M169/00—Lubricating 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
- C10M169/04—Mixtures of base-materials and additives
- C10M169/045—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and non-macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
- C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
- C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
- C09K5/045—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
-
- 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
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
- C10M105/38—Esters of polyhydroxy compounds
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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
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
- C10M107/22—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M107/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an alcohol, aldehyde, ketonic, ether, ketal or acetal radical
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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
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
- C10M107/30—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M107/32—Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
- C10M107/34—Polyoxyalkylenes
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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
- C10M127/00—Lubricating compositions characterised by the additive being a non- macromolecular hydrocarbon
- C10M127/04—Lubricating compositions characterised by the additive being a non- macromolecular hydrocarbon well-defined aromatic
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Abstract
Description
また、蛍光剤を用いた漏出検知方法も開発されており、カーエアコン用冷凍サイクルでは、レシーバドライヤ内に冷媒漏れ検出用の蛍光剤を含有させたものも提案されている。
例えば、空調機システムや冷却システムにおいて従来使用されていた冷媒は、地球温暖化に影響を与えるため、地球温暖化係数(GWP)が低い新規冷媒として、分子中に不飽和結合を有する冷媒(R1234yf冷媒等)や地球温暖化係数が低くシステム容量を小型化できる冷媒(R32等)が検討されている。このような地球温暖化係数の低い冷媒用の潤滑油組成物を検討する上で、蛍光剤入りの潤滑油組成物の熱的安定性、化学的安定性が不十分であることが本発明者により確認された。
特許文献8〜10の蛍光剤を含む潤滑油組成物は、熱的安定性及び化学的安定性を課題としているものの、十分な熱的安定性及び化学的安定性を付与し得るものではなかった。
(1)基油(A)と、分子内に、窒素、酸素及び硫黄を有さず、かつ3環以上の縮合環を有する蛍光性の縮合環式化合物(B)とを含有してなり、前記縮合環式化合物(B)を潤滑油組成物全量基準で0.001〜1.0質量%含む潤滑油組成物。
(2)前記(1)に記載の潤滑油組成物と、冷媒とを含む冷凍機用組成物。
(3)潤滑油組成物を含む機器において、前記(1)に記載の潤滑油組成物を用い、前記縮合環式化合物(B)の発光の有無に基づき、潤滑油組成物の漏洩の有無を判断する、漏洩箇所の検出方法。
<潤滑油組成物>
本実施形態の潤滑油組成物は、基油(A)と、分子内に、窒素、酸素及び硫黄を有さず、かつ3環以上の縮合環を有する蛍光性の縮合環式化合物(B)とを含有してなり、前記縮合環式化合物(B)を潤滑油組成物全量基準で0.001〜1.0質量%含むものである。
基油としては特に制限されることなく、鉱油及び各種の合成油を用いることができる。合成油としては、ポリアルキレングリコール、ポリビニルエーテル、ポリオールエステル、アルキルベンゼン及びポリα−オレフィンが好適に用いられる。
本実施形態において、基油は、鉱油、ポリアルキレングリコール、ポリビニルエーテル、ポリオールエステル、アルキルベンゼン及びポリα−オレフィンから選ばれる1種以上であることが好ましく、ポリアルキレングリコール、ポリビニルエーテル及びポリオールエステルから選ばれる1種以上であることがより好ましい。特に、化学的安定性及び熱的安定性の観点から、ポリビニルエーテルが好適である。
R1−[(OR2)m1−OR3]n1 (1)
式(1)中、R1は水素原子、炭素数1〜10のアルキル基、炭素数2〜10のアシル基、結合部2〜6個を有する炭素数1〜10の脂肪族炭化水素基を示し、R2は炭素数2〜4のアルキレン基を示し、R3は水素原子、炭素数1〜10のアルキル基、炭素数2〜10のアシル基を示し、n1は1から6までの整数、m1はm1×n1の平均値が6〜80となる数を示す。
オレフィン性二重結合を有する炭化水素モノマーとしては、エチレン、プロピレン、各種ブテン、各種ペンテン、各種ヘキセン、各種ヘプテン、各種オクテン、ジイソブチレン、トリイソブチレン、スチレン、α−メチルスチレン、各種アルキル置換スチレン等が挙げられる。
脂肪酸は、直鎖状脂肪酸、分岐状脂肪酸の何れであってもよく、潤滑性の点からは直鎖状脂肪酸が好ましく、加水分解安定性の点からは分岐状脂肪酸が好ましい。また、脂肪酸は、飽和脂肪酸、不飽和脂肪酸の何れであってもよい。
脂肪酸としては、例えば、イソ酪酸、ペンタン酸、ヘキサン酸、ヘプタン酸、オクタン酸、ノナン酸、デカン酸、ウンデカン酸、ドデカン酸、トリデカン酸、テトラデカン酸、ペンタデカン酸、ヘキサデカン酸、ヘプタデカン酸、オクタデカン酸、ノナデカン酸、イコサン酸、オレイン酸等の直鎖または分岐のもの、あるいはα炭素原子が4級である、いわゆるネオ酸等が挙げられる。
なお、ポリ−α−オレフィンとしては、熱安定性の観点から、ポリ−α−オレフィンの水素化処理物が好ましい。
基油の40℃動粘度は、好ましくは1mm2/s以上250mm2/s以下であり、より好ましくは10mm2/s以上150mm2/s以下であり、さらに好ましくは30mm2/s以上80mm2/s以下である。
基油の粘度指数は、好ましくは60以上であり、より好ましくは80以上であり、さらに好ましくは100以上である。
40℃の動粘度、100℃の動粘度及び粘度指数は、JIS K2283:2000に準拠して測定する。
本実施形態の潤滑油組成物は、分子内に、窒素、酸素及び硫黄を有さず、かつ3環以上の縮合環を有する蛍光性の縮合環式化合物(B)を用いる。
本実施形態において「蛍光性」は、紫外線又は可視光線の照射を受けた際に、可視光領域の光を発光する性質のことをいう。縮合環式化合物(B)は、非発光時は無色であってもよいし、有色であってもよい。
一方、本実施形態で用いる蛍光性化合物としての縮合環式化合物(B)は、分子内に、窒素、酸素及び硫黄を有さないことから、基油との反応が抑制されるため、潤滑油組成物の熱安定性及び化学的安定性に優れ、潤滑油組成物の経時的な劣化(変質、分解)を抑制できる。また、本実施形態で用いる蛍光性化合物としての縮合環式化合物(B)は、それ自身が経時的に劣化(変質、分解)しにくいものである。すなわち、本実施形態の潤滑油組成物は、経時的な変色、酸価の上昇、スラッジの発生、機器内の金属腐食を抑制できるとともに、蛍光性能の経時的な劣化も抑制し得るものである。
縮合環式化合物(B)の含有量が0.001質量%未満の場合、潤滑油組成物の漏洩箇所の検出が困難となる。また、縮合環式化合物(B)の含有量が1.0質量%超の場合、潤滑油組成物に縮合環式化合物(B)が溶解できない場合があり、潤滑性等に悪影響を与える可能性がある。また、縮合環式化合物(B)の含有量が1.0質量%を超えても、潤滑油組成物の漏洩箇所の検出精度の向上は期待できない。
縮合環式化合物(B)の含有量は、潤滑油組成物全量基準で0.001〜0.8質量%であることが好ましく、潤滑油組成物全量基準で0.001〜0.5質量%であることがより好ましく、潤滑油組成物全量基準で0.002〜0.2質量%であることがさらに好ましく、潤滑油組成物全量基準で0.002〜0.1質量%であることがよりさらに好ましい。
このような置換基を有する縮合環式化合物(B)を用いることで、より熱安定性及び化学的安定性に優れた潤滑油組成物を提供することができる。
置換基として有するペリレンの具体例としては、2,3,10,11−テトラメチルペリレン、3−メチルペリレン、3,7−ジプロピルペリレン、2,5,7,10−テトラフェニルペリレン、3,9−ビス(2−ナフチル)ペリレンが挙げられる。
置換基として有するナフタセンの具体例としては、5,6,11,12−テトラフェニルナフタセン、1−メチルナフタセン、2,9−ジオクチルナフタセンが挙げられる。この中でも、5,6,11,12−テトラフェニルナフタセンが好ましい。
置換基として有するアントラセンの具体例としては、9−フェニルアントラセン、9,10−ジフェニルアントラセン、9−9’−ビアントラセン、9−メチルアントラセン、2−エチルアントラセンが挙げられる。この中でも、9−フェニルアントラセン、9,10−ジフェニルアントラセン、9−9’−ビアントラセンのいずれかが好ましい。
本実施形態の潤滑油組成物は、さらに着色剤を含有してもよい。潤滑油組成物に着色剤を含有させることにより、潤滑油組成物を所望の色に調整することができ、縮合環式化合物(B)が非発光時に無色のものであっても、潤滑油組成物中の縮合環式化合物(B)の含有の有無を容易に判別することができる。また、縮合環式化合物(B)の発光色と、着色剤の色とを合成することにより、暗い所で人間の目が視認しやすい色に調整することができる。暗い所で人間の目が視認しやすい色とは、紫色〜青色〜緑色〜黄色の範囲である。橙色〜赤色は暗いところで人間の目が視認しにくい。
着色剤としては、潤滑性等の諸性能を維持しやすくする観点から、染料が好適に用いられる。
潤滑油組成物中には、酸化防止剤、極圧剤、酸捕捉剤、酸素捕捉剤及び銅不活性化剤からなる添加剤から選択される少なくとも一種を含有してもよい。各添加剤の含有量は、潤滑油組成物全量に対して、通常0.01〜5質量%、好ましくは0.05〜3質量%である。
極圧剤としては、リン酸エステル、酸性リン酸エステル、亜リン酸エステル、酸性亜リン酸エステル及びこれらのアミン塩等のリン系極圧剤、硫化油脂、硫化脂肪酸、硫化エステル等の硫黄系極圧剤、炭素数3〜60の脂肪酸金属塩等が挙げられる。
酸捕捉剤としては、フェニルグリシジルエーテル、アルキルグリシジルエーテル、アルキレングリコールグリシジルエーテル、グリシジルエステル、シクロヘキセンオキシド、α−オレフィンオキシド、エポキシ化大豆油等のエポキシ化合物が挙げられる。
酸素捕捉剤としては、4,4’−チオビス(3−メチル−6−t−ブチルフェノール)、ジフェニルスルフィド、ジオクチルジフェニルスルフィド、ジアルキルジフェニレンスルフィド、ベンゾチオフェン、ジベンゾチオフェン、フェノチアジン、ベンゾチアピラン、チアピラン、チアントレン、ジベンゾチアピラン、ジフェニレンジスルフィド等の含硫黄芳香族化合物、各種オレフィン、ジエン、トリエン等の脂肪族不飽和化合物、二重結合を有するテルペン類等が挙げられる。
銅不活性化剤としては、N−[N,N’−ジアルキル(炭素数3〜12のアルキル基)アミノメチル]トリアゾール等が挙げられる。
潤滑油組成物の40℃動粘度、100℃動粘度及び粘度指数の好適な範囲は、上述した基油(A)の40℃動粘度、100℃動粘度及び粘度指数の好適な範囲と同様である。
なお、酸価、並びに、後述する水酸基価及び体積抵抗率は、新油の状態で満たすことが好ましく、実施例のオートクレーブ試験を行った後にも満たすことがより好ましい。
上述した本実施形態の潤滑油組成物の用途は特に制限されないが、例えば、冷凍機油、油圧作動油、軸受油、歯車油、タービン油、変速機油、ショックアブソーバー油及びモーター冷却油の何れかに用いることができる。
本実施形態の冷凍機用組成物は、上述した本実施形態の潤滑油組成物と、冷媒とを含むものである。
冷媒としては、炭素数1〜3の飽和フッ化炭化水素冷媒及び炭素数3の不飽和フッ化炭化水素冷媒から選ばれる1種以上を含むことが好ましい。
特に、炭素数1〜3の飽和フッ化炭化水素冷媒は安定性に優れ分解しにくいことから、縮合環式化合物(B)及び基油(A)に対して悪影響を及ぼすことを抑制でき、ひいては、潤滑油組成物の経時的な変色、潤滑油組成物の酸価の上昇、潤滑油組成物を元にしたスラッジ発生、潤滑油組成物を原因とする機器内の金属腐食、蛍光性能の経時的な劣化等を抑制しやすくできる点で好ましい。
その他の冷媒としては、フッ化エーテル化合物冷媒、フッ化アルコール化合物冷媒、フッ化ケトン化合物冷媒、及び自然冷媒等が挙げられる。
冷凍機は圧縮型冷凍機が好ましい。また、圧縮型冷凍機圧縮機は、凝縮器、膨張機構(膨張弁等)及び蒸発器を備える冷凍サイクルを有するもの、又は、圧縮機、凝縮器、膨張機構、乾燥器及び蒸発器を備える冷凍サイクルを有するものがより好ましい。
冷凍機用組成物は、例えば、圧縮機等に設けられる摺動部分を潤滑するために使用される。
なお、摺動部分は、特に限定されないが、摺動部分のいずれかが鉄等の金属を含むことが好ましく、金属−金属間で摺動するものであることが好ましい。
冷凍機用組成物の酸価、水酸基価、体積抵抗率及び水分含有量の好適な範囲は、上述した潤滑油組成物の好適な範囲と同様である。
本実施形態の漏洩箇所の検出方法は、潤滑油組成物を含む機器において、上述した本実施形態の潤滑油組成物を用い、前記縮合環式化合物の発光の有無に基づき、潤滑油組成物等の漏洩の有無を検出するものである。
かかる機器の潤滑油組成物として、上述した本実施形態の潤滑油組成物を用い、ブラックライト等で紫外線又は可視光線を機器に照射することにより、潤滑油組成物が漏洩している箇所で、縮合環式化合物(B)が発する可視光領域の光を確認することで、潤滑油組成物等の漏洩箇所を検出することができる。
なお、縮合環式化合物(B)が発する可視光領域の光の確認は、目視で行ってもよく、受光素子を備えた機器で行ってもよい。
なお、縮合環式化合物(B)が発する可視光領域の光の確認は、目視で行ってもよく、受光素子を備えた機器で行ってもよい。
表1〜3の組成からなる実施例1〜26及び比較例1〜4の潤滑油組成物(冷凍機用組成物)を調製した。
2−1.安定性
実施例1〜26及び比較例1〜4の潤滑油組成物(冷凍機用組成物)について、下記条件でオートクレーブ試験を行った後、油の外観(目視で観察される油の色)、触媒の外観(目視で観察される触媒の色)、スラッジの有無、油の酸価を評価又は測定した。酸価はJIS K2501:2003の「指示薬滴定法」に準拠して測定した。結果を表1〜3に示す。なお、表1〜3において、油の外観が良好及び触媒の外観が良好とは、評価前後で概ね色の変化がないことを示す。
<オートクレーブ試験>
内容積200mLのオートクレーブに、実施例1〜26及び比較例1〜4の冷凍機用組成物(組成物中の水分500質量ppm)60gと、鉄、銅及びアルミニウムからなる金属触媒とを封入し、真空引きした後(空気残量25mL)、温度175℃の条件にて336時間保持した。
<基油(A)>
・基油A:ポリビニルエーテル(ポリエチルビニルエーテル、40℃動粘度:67.5mm2/s、100℃動粘度:8.03mm2/s、粘度指数:81)
・基油B:ポリオールエステル(ペンタエリスリトール及びジペンタエリスリトールの混合ポリオール(質量比5:1)と、2−エチルヘキサン酸及び3,5,5−トリメチルヘキサン酸の混合脂肪酸(質量比9:10)とのヒンダードエステル、40℃動粘度:88.33mm2/s、100℃動粘度:9.60mm2/s、粘度指数:91)
・基油C:ポリアルキレングリコール(ポリプロピレングリコールジメチルエーテル、40℃動粘度:39.2mm2/s、100℃動粘度:8.65mm2/s、粘度指数:208)
<縮合環式化合物(B)>
・蛍光性化合物A:ペリレン
・蛍光性化合物B:5,6,11,12−テトラフェニルナフタセン
・蛍光性化合物C:9−フェニルアントラセン
・蛍光性化合物D:9,10−ジフェニルアントラセン
・蛍光性化合物E:9,9’−ビアントラセン
・蛍光性化合物F:アントラセン
<その他の蛍光性化合物>
・蛍光性化合物G:2−(4−tert−ブチルフェニル)−5−(4−ビフェニリル)−1,3,4−オキサジアゾール
<添加剤>
・酸化防止剤:2,6−ジ−tert−ブチル−4−メチルフェノール
・極圧剤:トリクレジルフォスフェート
・酸捕捉剤:2−エチルヘキシルグリシジルエーテル
<冷媒>
ジフルオロメタン(R32)
<着色剤>
・着色剤A:Solvent Yellow116(油溶性黄色染料、有効成分10質量%)
・着色剤B:Solvent Green20(油溶性緑色染料、有効成分10質量%)
・着色剤C:Solvent Blue35(油溶性青色染料、有効成分10質量%)
・着色剤D:Solvent Red207(油溶性赤色染料、有効成分10質量%)
一方、比較例1〜4の潤滑油組成物(冷凍機用組成物)は、経時的な変色、酸価の上昇、スラッジの発生、機器内の金属腐食を抑制できないものであった。また、表中では評価していないが、比較例1〜4の潤滑油組成物(冷凍機用組成物)は、オートクレーブ試験後の蛍光性能が低下し、長期に渡って漏洩箇所を検出することが困難なものであった。
表4の組成からなる実施例及び比較例の潤滑油組成物(冷凍機用組成物)を調製した。
また、実施例27〜36の冷凍機用組成物は、縮合環式化合物(B)が非発光時であっても冷凍機用組成物を着色することができ、さらには、縮合環式化合物(B)の発光色と、着色剤の色との合成により、発光時に視認される色が暗いところで視認しやすい色(紫色〜黄色)であった。
Claims (8)
- 基油(A)と、分子内に、窒素、酸素及び硫黄を有さず、かつ3環以上の縮合環を有する蛍光性の縮合環式化合物(B)とを含有してなり、前記縮合環式化合物(B)を潤滑油組成物全量基準で0.001〜1.0質量%含む潤滑油組成物。
- 前記基油(A)が、鉱油、ポリアルキレングリコール、ポリビニルエーテル、ポリオールエステル、アルキルベンゼン及びポリα−オレフィンから選ばれる1種以上である請求項1に記載の潤滑油組成物。
- 前記縮合環式化合物(B)が、ペリレン系化合物、ナフタセン系化合物及びアントラセン系化合物から選ばれる1種以上である請求項1又は2に記載の潤滑油組成物。
- さらに、着色剤(C)を含む請求項1〜3の何れか1項に記載の潤滑油組成物。
- 冷凍機油、油圧作動油、軸受油、歯車油、タービン油、変速機油、ショックアブソーバー油及びモーター冷却油の何れかに用いられる請求項1〜4の何れか1項に記載の潤滑油組成物。
- 請求項1〜4の何れか1項に記載の潤滑油組成物と、冷媒(D)とを含む冷凍機用組成物。
- 前記冷媒(D)が、炭素数1〜3の飽和フッ化炭化水素冷媒及び炭素数3の不飽和フッ化炭化水素冷媒から選ばれる1種以上を含む請求項6に記載の冷凍機用組成物。
- 潤滑油組成物を含む機器において、請求項1〜4の何れか1項に記載の潤滑油組成物を用い、前記縮合環式化合物(B)の発光の有無に基づき、潤滑油組成物の漏洩の有無を判断する、漏洩箇所の検出方法。
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JPS61211391A (ja) * | 1985-02-25 | 1986-09-19 | スペクトロニクス コーポレイション | 蛍光染料で着色された多ハロゲン化炭化水素冷却剤 |
JPS63214633A (ja) * | 1987-03-03 | 1988-09-07 | Toyota Central Res & Dev Lab Inc | 摺動シ−ル部の液漏れ測定法 |
JP2001348589A (ja) * | 2000-06-08 | 2001-12-18 | Minebea Co Ltd | 蛍光グリースとその応用軸受 |
JP2007511645A (ja) * | 2003-11-13 | 2007-05-10 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | 紫外線蛍光染料および可溶化剤を含有する冷媒組成物 |
EP2166040A1 (en) * | 2008-09-22 | 2010-03-24 | Radiant Color N.V. | Novel lipophilic fluorescent dyes and a process for their production |
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EP3524662A4 (en) | 2020-06-10 |
JP6995764B2 (ja) | 2022-02-21 |
KR20190058448A (ko) | 2019-05-29 |
CN109477019A (zh) | 2019-03-15 |
EP3524662A1 (en) | 2019-08-14 |
WO2018066700A1 (ja) | 2018-04-12 |
EP3524662B1 (en) | 2023-11-29 |
US20200024544A1 (en) | 2020-01-23 |
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