JPH07103388B2 - １，１，１，２−テトラフルオロエタン冷媒用潤滑油 - Google Patents

１，１，１，２−テトラフルオロエタン冷媒用潤滑油

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Publication number
JPH07103388B2
JPH07103388B2 JP4345705A JP34570592A JPH07103388B2 JP H07103388 B2 JPH07103388 B2 JP H07103388B2 JP 4345705 A JP4345705 A JP 4345705A JP 34570592 A JP34570592 A JP 34570592A JP H07103388 B2 JPH07103388 B2 JP H07103388B2
Authority
JP
Japan
Prior art keywords
lubricating oil
polyglycol
refrigerant
tetrafluoroethane
monoalkyl ether
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 - Lifetime
Application number
JP4345705A
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English (en)
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JPH05247484A (ja
Inventor
正人 金子
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.)
Idemitsu Kosan Co Ltd
Original Assignee
Idemitsu Kosan Co Ltd
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Application filed by Idemitsu Kosan Co Ltd filed Critical Idemitsu Kosan Co Ltd
Publication of JPH05247484A publication Critical patent/JPH05247484A/ja
Publication of JPH07103388B2 publication Critical patent/JPH07103388B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • C10M5/00—Solid or semi-solid compositions containing as the essential lubricating ingredient mineral lubricating oils or fatty oils and their use
    • 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
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    • 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
    • C—CHEMISTRY; METALLURGY
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
    • C10M171/008—Lubricant compositions compatible with refrigerants
    • 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
    • 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
    • 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/107—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106
    • 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
    • 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
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/109—Polyethers, i.e. containing di- or higher polyoxyalkylene groups esterified
    • 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
    • C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/02—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
    • C10M2211/022—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aliphatic
    • 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
    • C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/06—Perfluorinated compounds
    • 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
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • 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
    • 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
    • C10N2040/30—Refrigerators lubricants or compressors lubricants
    • 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
    • C10N2040/32—Wires, ropes or cables lubricants
    • 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
    • C10N2040/34—Lubricating-sealants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/36—Release agents or mold release agents
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/38—Conveyors or chain belts
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Lubricants (AREA)

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は１，１，１，２−テトラ
フルオロエタン冷媒用潤滑油に関し、詳しく特定のポリ
グリコールのモノアルキルエーテルを主成分とし、１，
１，１，２−テトラフルオロエタンを冷媒とする開放型
冷凍機又は高速多気筒冷凍機の潤滑剤として好適な潤滑
油に関する。
【０００２】
【従来の技術及び発明が解決しようとする課題】従来か
ら、ポリグリコール系の化合物は、冷凍機等の潤滑油と
して利用されているが、冷媒、特に１，１，１，２−テ
トラフルオロエタン等の水素含有フロン冷媒との相溶性
が不充分である。また、比較的低粘度であるため開放型
冷凍機等では蒸発損失が多く、特に高速多気筒冷凍機に
おいては、油消費量が著しく多く実用性に欠けるもので
あった。そこで、本発明者は上記従来のポリグリコール
系化合物の欠点を解消し、冷凍機油等として好適な性状
を有するポリグリコール系化合物を開発すべく鋭意研究
を重ねた。
【０００３】
【課題を解決するための手段】その結果、オキシエチレ
ン単位およびオキシプロピレン単位を有するポリグリコ
ールのモノアルキルエーテルが、目的を達成できること
を見出した。本発明はこのような知見に基いて完成した
ものである。すなわち、本発明はオキシエチレン単位お
よびオキシプロピレン単位を有するとともに、４０℃に
おける動粘度が２０〜２２７ｃＳｔであるポリグリコー
ルのモノアルキルエーテル（但し、アルキル基の炭素数
は１〜１０である）を主成分とする１，１，１，２−テ
トラフルオロエタン冷媒用開放型冷凍機又は高速多気筒
冷凍機潤滑油を提供するものである。
【０００４】本発明の潤滑油は、オキシエチレン単位
（Ｃ2 Ｈ4 Ｏ）およびオキシプロピレン単位（Ｃ3 Ｈ6
Ｏ）を有するポリグリコールのモノアルキルエーテル、
つまり 一般式 Ｒ（Ｃ2 Ｈ4 Ｏ）m （Ｃ3 Ｈ6 Ｏ）n Ｈ ・・・（Ｉ） （式中、Ｒは炭素数１〜１０のアルキル基を示し、ｍお
よびｎはそれぞれオキシエチレン単位およびオキシプロ
ピレン単位の繰り返し数を示す。）で表されるポリグリ
コールのモノアルキルエーテルを主成分とするものであ
る。また、このポリグリコールのモノアルキルエーテル
は、４０℃における動粘度が２０〜２２７ｃＳｔのもの
である。
【０００５】なお、本発明の潤滑油は、このポリグリコ
ールのモノアルキルエーテルを主成分とするものである
が、必要に応じて摩耗防止剤，塩素捕捉剤，酸化防止
剤，金属不活性化剤，消泡剤等を適量配合することも有
効である。ここで、塩素捕捉剤としては各種のものがあ
るが、トリフェニルホスファイト，トリクレシルホスフ
ァイト等の亜リン酸エステル系化合物を好適なものとし
てあげることができ、これを0.００１〜0.５重量％の割
合で添加すればよい。本発明の潤滑油は、１，１，１，
２−テトラフルオロエタン（フロン１３４ａ）を冷媒と
して用いる冷凍機，クーラー（特にカーエアコン），ヒ
ートポンプ等の潤滑剤として有効である。
【０００６】
【実施例】次に、本発明を実施例および比較例に基いて
さらに詳しく説明する。 実施例１および比較例１〜５ 第１表に示す鉱油，アルキルベンゼンあるいはポリグリ
コールを試料として下記の方法にしたがってその性能評
価を行った。結果を第２表に示す。 フロン−２２（モノクロロジフルオロメタン）との二層
分離温度 試料とフロン−２２を２：８（重量）で混合し、二層に
分離する温度を測定した。 フロン−１３４ａとの二層分離温度 試料とフロン−１３４ａを２：８（重量）で混合し、二
層に分離する温度を低温側と高温側で測定した。 ファレックス焼付試験 ＡＳＴＭ Ｄ ３２３３に準拠し、焼付荷重（ポンド）
で評価した。 シールドチューブ試験 試料とフロン−２２との２：１（重量）混合物を鉄，
銅，アルミニウムの触媒とともに、ガラス管に封入し、
１７５℃において７２０時間加熱後、その外観ならびに
析出物の有無を測定した。
【０００７】
【表１】
【０００８】
【表２】
【０００９】
【発明の効果】以上の如く、本発明の潤滑油は、１，
１，１，２−テトラフルオロエタン（フロン１３４ａ）
冷媒下での安定性が良好であって、二層分離温度が低
く、相溶性が良好である。特に、フロン−１３４ａ冷媒
に対する低温側の二層分離温度が低く、高温側の二層分
離温度が高いので、この種の冷媒を用いる開放型冷凍機
又は高速多気筒冷凍機の潤滑に有用である。したがっ
て、本発明の潤滑油は、フロン１３４ａを冷媒として用
いる冷凍機，クーラー（特にカーエアコン），ヒートポ
ンプ等の潤滑剤として有効に利用される。

Claims (2)

    【特許請求の範囲】
  1. 【請求項１】 オキシエチレン単位およびオキシプロピ
    レン単位を有するとともに、４０℃における動粘度が２
    ０〜２２７ｃＳｔであるポリグリコールのモノアルキル
    エーテル（但し、アルキル基の炭素数は１〜１０であ
    る）を主成分とする１，１，１，２−テトラフルオロエ
    タン冷媒用開放型冷凍機又は高速多気筒冷凍機潤滑油。
  2. 【請求項２】 モノアルキルエーテルのアルキル基が、
    ブチル基である請求項１記載の潤滑油。
JP4345705A 1987-10-30 1992-12-25 １，１，１，２−テトラフルオロエタン冷媒用潤滑油 Expired - Lifetime JPH07103388B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62-273418 1987-10-30
JP27341887 1987-10-30

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP63270835A Division JPH06102792B2 (ja) 1987-10-30 1988-10-28 フッ素含有アルカン冷媒用潤滑油

Publications (2)

Publication Number Publication Date
JPH05247484A JPH05247484A (ja) 1993-09-24
JPH07103388B2 true JPH07103388B2 (ja) 1995-11-08

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JP4345705A Expired - Lifetime JPH07103388B2 (ja) 1987-10-30 1992-12-25 １，１，１，２−テトラフルオロエタン冷媒用潤滑油

Country Status (3)

Country Link
US (3) US6316395B1 (ja)
JP (1) JPH07103388B2 (ja)
KR (1) KR940001530B1 (ja)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940001530B1 (ko) * 1987-10-30 1994-02-23 이데미쓰 고산 가부시끼가이샤 플론 냉매용 윤활유
KR100706434B1 (ko) 2006-02-24 2007-04-10 현대자동차주식회사 자동 변속기용 윤활유 조성물
KR20110042284A (ko) * 2008-07-16 2011-04-26 다우 글로벌 테크놀로지스 엘엘씨 윤활제로서 실릴 종결된 폴리알킬렌 글라이콜을 포함하는 냉매 조성물 및 그의 제조 방법
JP2013014673A (ja) 2011-07-01 2013-01-24 Idemitsu Kosan Co Ltd 圧縮型冷凍機用潤滑油組成物

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JPS53140469A (en) * 1977-05-13 1978-12-07 Nippon Oil Co Ltd Component of high viscosity refrigerator oil
JPS5558298A (en) 1978-10-25 1980-04-30 Nippon Oil Co Ltd Lubricating oil for rotary refrigerant compressor
JPS5679175A (en) * 1979-11-30 1981-06-29 Daikin Ind Ltd Absorption refrigerant carrier composition
JPS5742119A (en) 1980-08-27 1982-03-09 Mitsubishi Electric Corp Decompression cvd device
JPS5763395A (en) 1980-10-03 1982-04-16 Nippon Oil & Fats Co Ltd Polyether refrigerator oil composition
US4507314A (en) 1983-07-20 1985-03-26 Midit, Societe Fiduciaire Drug for treating affections provoked by a too high histamine level, of the gastroduodenal mucosa and allergic affections
JPS6088679A (ja) 1983-10-21 1985-05-18 Toyoda Gosei Co Ltd ステアリングホイ−ル
US4613445A (en) 1984-07-23 1986-09-23 Union Carbide Corporation Organophosphate-containing antifreeze
US4569774A (en) 1984-11-13 1986-02-11 Mobil Oil Corporation Polyglycol lubricants comprising trifluoromethane sulfonate
JPH0631363B2 (ja) 1985-06-06 1994-04-27 日本石油株式会社 冷凍機用潤滑油組成物
US4755316A (en) 1987-10-23 1988-07-05 Allied-Signal Inc. Refrigeration lubricants
KR940001530B1 (ko) * 1987-10-30 1994-02-23 이데미쓰 고산 가부시끼가이샤 플론 냉매용 윤활유
US4948525A (en) * 1988-04-06 1990-08-14 Nippon Oil Co., Ltd. Lubricating oil compositions for refrigerators
BR9706748A (pt) * 1996-09-12 1999-07-20 Japan Energy Corp Óleo refrigerador fluído de operacão para refrigerador e método e método para lubrificar um sistema de refrigeração

Also Published As

Publication number Publication date
JPH05247484A (ja) 1993-09-24
US20010018406A1 (en) 2001-08-30
KR890006798A (ko) 1989-06-16
US6316395B1 (en) 2001-11-13
US6191082B1 (en) 2001-02-20
KR940001530B1 (ko) 1994-02-23

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