JP2556548B2 - Lubricating oil used for CFC compressors - Google Patents
Lubricating oil used for CFC compressorsInfo
- Publication number
- JP2556548B2 JP2556548B2 JP63085347A JP8534788A JP2556548B2 JP 2556548 B2 JP2556548 B2 JP 2556548B2 JP 63085347 A JP63085347 A JP 63085347A JP 8534788 A JP8534788 A JP 8534788A JP 2556548 B2 JP2556548 B2 JP 2556548B2
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- cfc
- lubricating oil
- oil
- freon
- compressor
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Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、フロンを冷媒として使用する圧縮機用潤滑
油に関するものであり、特に、フロンのうちでも塩素を
含まないR134aフロン（1,1,1,2−テトラフルオロエタ
ン）を圧縮する際に用いるのに好適な潤滑油に関するも
のである。Description: TECHNICAL FIELD The present invention relates to a lubricating oil for a compressor that uses Freon as a refrigerant, and in particular, R134a Freon (1,1 , 1,2-Tetrafluoroethane), and a lubricant suitable for use in compressing (1,2,4-tetrafluoroethane).
（従来の技術） 従来、冷凍機、空調機、冷蔵庫等には冷媒としてフッ
素と塩素を構成元素とするフロン、例えばR11（トリク
ロロモノフルオロメタン）、R12（ジクロロジフルオロ
メタン）、R22（モノクロロジフルオロメタン）等のフ
ロンが使用されているが、最近のオゾン層破壊問題に関
連し、これへの影響が無い新しいタイプの冷媒としてR1
34aのフロンが出現し始めている。(Prior Art) Conventionally, in a refrigerator, an air conditioner, a refrigerator, etc., a CFC having fluorine and chlorine as constituent elements as a refrigerant, for example, R11 (trichloromonofluoromethane), R12 (dichlorodifluoromethane), R22 (monochlorodifluoromethane). ) Is used as a new type of refrigerant that is related to the recent ozone depletion problem and has no effect on it.
34a Freon is starting to appear.
一方フロン圧縮機用潤滑油に関しては、従来、鉱油系
や合成油系のものが多数知られているが、これらは前記
新しいフロンR134aに対しては、低温での相溶性が全く
悪く使用できないことが分かった。従って、今日この対
策が重要な課題となってきた。また、この他にも冷凍機
油に必要な性能には、潤滑性、省エネルギー性、耐摩耗
性、密封性、耐熱性、スラッジ析出防止性が挙げられ、
これらの点についても十分に配慮が必要である。On the other hand, with respect to the CFC compressor lubricating oil, a large number of mineral oil-based and synthetic oil-based lubricants have been conventionally known, but these are completely incompatible with the new CFC R134a at low temperatures and cannot be used. I understood. Therefore, this measure has become an important issue today. In addition to these, the performance required for refrigerating machine oil includes lubricity, energy saving, wear resistance, sealing property, heat resistance, and sludge precipitation prevention property.
It is necessary to give sufficient consideration to these points.
因みに、従来知られている合成油の例としてポリエー
テル系合成潤滑油があり、これについては油化学誌，第
29巻，第９号，第336〜343頁（1980）およびペトロテッ
ク誌，第８巻，第６号，第562〜566頁（1985）に概説さ
れている。また、従来知られている合成油の特許例とし
て、特開昭61−281199号公報には次式、 R1〔Ｏ−（R2O）−R3〕ｎ で表わされるポリグリコールとアルキルベンゼン等の混
合物、特開昭57−63395号公報にはポリエーテル、例え
ば付加モル数53のように高分子量のポリオキシプロピレ
ンモノブチルエーテルにエポキシシクロアルキル系化合
物を混合した油、また特開昭59−117590号公報にはポリ
エーテル系化合物とパラフィン系又はナフテン系鉱油の
高粘度混合油が夫々紹介されている。Incidentally, examples of conventionally known synthetic oils include polyether-based synthetic lubricating oils.
29, No. 9, pages 336-343 (1980) and Petrotech, Vol. 8, No. 6, pages 562-566 (1985). Further, as examples of conventionally known synthetic oils, JP-A-61-281199 discloses a polyglycol represented by the following formula, R 1 [O- (R 2 O) -R 3 ] n , an alkylbenzene, etc. JP-A-57-63395, a polyether, for example, an oil obtained by mixing an epoxycycloalkyl compound with a high molecular weight polyoxypropylene monobutyl ether having an addition mole number of 53, and JP-A-59-117590. In the publication, high viscosity mixed oils of polyether compounds and paraffinic or naphthenic mineral oils are introduced, respectively.
（発明が解決しようとする課題） しかしながら、上述の既知の合成油系の潤滑油はいず
れも相溶性等の問題からフロンR134a圧縮機用の潤滑油
にはなり得なかった。(Problems to be Solved by the Invention) However, none of the above-mentioned known synthetic oil-based lubricating oils can be used as a lubricating oil for a Freon R134a compressor because of problems such as compatibility.
一方、鉱油系についても検討を行ったが、現在までの
ところ好ましい結果が得られていないのが実情である。On the other hand, although mineral oil-based materials were also examined, the actual situation is that favorable results have not been obtained so far.
そこで本発明の目的は、特に新しい冷媒であり、フロ
ンR12の代替品として考えられているフロンR134aに対し
て、極めて低温相溶性の良いフロン圧縮機用潤滑油を提
供することにある。Therefore, an object of the present invention is to provide a lubricating oil for a CFC compressor which has a very low temperature compatibility with CFC R134a which is a new refrigerant and is considered as a substitute for CFC R12.
（課題を解決するための手段） 本発明者は各種の鉱油並びに合成油を対象に上記課題
解決のために鋭意研究を進めたところ、特定のポリオキ
シプロピレングリコールジアルキルエーテルが本発明の
目的達成に有効であることを見い出し、本発明を完成す
るに至った。(Means for Solving the Problem) The present inventor has conducted diligent research to solve the above problems targeting various mineral oils and synthetic oils, and as a result, a specific polyoxypropylene glycol dialkyl ether has achieved the object of the present invention. They found that it was effective and completed the present invention.
すなわち、本発明は、平均分子量300〜700（100℃に
おける粘度が4.0〜7.1cSt）を有する次の一般式（Ｉ） （式中のR1およびR2は炭素数１〜８個のアルキル基であ
り、R1とR2は同一もしくは異なり、ｎは整数を示す）で
表される化合物を基油とし、1,1,1,2−テトラフルオロ
エタンの圧縮に使用されることを特徴とする、フロン圧
縮機用潤滑油に係るものである。That is, the present invention has the following general formula (I) having an average molecular weight of 300 to 700 (viscosity at 100 ° C. is 4.0 to 7.1 cSt). (Wherein R 1 and R 2 are alkyl groups having 1 to 8 carbon atoms, R 1 and R 2 are the same or different, and n is an integer), and a compound represented by The present invention relates to a lubricating oil for a Freon compressor, which is used for compressing 1,1,2-tetrafluoroethane.
本発明で基油として使用するポリオキシプロピレング
リコールジアルキルエーテルは、プロピレンオキサイド
の付加重合で得られるポリオキシプロピレングリコール
（ポリエーテル）の両末端水素のジアルキル置換体であ
るが、そのうちでも本発明で使用するものは前記一般式
（Ｉ）で表わされる構造を有し、その平均分子量が300
〜700（100℃における粘度が4.0〜7.1cSt）の範囲内の
もので、しかも両末端の置換アルキル基が炭素数１〜８
個を有することを要するものである。かかるポリオキシ
プロピレングリコールジアルキルエーテルは、例えばユ
ニオン・カーバイドコーポレーション、日本油脂
（株）、旭電化工業（株）製等のものとして市場におい
て入手することができる。The polyoxypropylene glycol dialkyl ether used as the base oil in the present invention is a dialkyl-substituted product of hydrogen at both terminals of polyoxypropylene glycol (polyether) obtained by addition polymerization of propylene oxide, and among them, used in the present invention. Has a structure represented by the above general formula (I) and has an average molecular weight of 300
To 700 (viscosity at 100 ° C is 4.0 to 7.1 cSt), and the substituted alkyl groups at both ends have 1 to 8 carbon atoms.
It is necessary to have an individual. Such polyoxypropylene glycol dialkyl ether is commercially available as, for example, those manufactured by Union Carbide Corporation, NOF Corporation, Asahi Denka Kogyo Co., Ltd., and the like.
本発明において、前記一般式（Ｉ）で表わされる化合
物の平均分子量（100℃における粘度）を前記範囲内の
ものに限定する理由は次の通りである。In the present invention, the reason why the average molecular weight (viscosity at 100 ° C.) of the compound represented by the general formula (I) is limited to the above range is as follows.
すなわち、かかる平均分子量が300よりも小さいもの
では膨潤性が低下すると共に、シール材、ゴム等に対し
悪影響を及ぼすことになる。特に、カーエアコンに使用
する場合には、ゴムホースに対する潤滑性が大きな要因
となるため、ゴムへの浸透性の小さくなる分子量300以
上のものを選定することは不可欠である。一方、分子量
が700を超えるとフロンR134aとの相溶性が低下し、本発
明の目的を達成し得なくなる。因みに、相溶性の悪い油
はコンプレッサーへの油戻りが悪く、コンプレッサーの
焼き付き原因となる。That is, when the average molecular weight is less than 300, the swelling property is lowered and the sealing material, rubber and the like are adversely affected. In particular, when used in a car air conditioner, the lubricity of the rubber hose is a major factor, so it is essential to select one having a molecular weight of 300 or more, which has low permeability to rubber. On the other hand, when the molecular weight exceeds 700, the compatibility with Freon R134a decreases and the object of the present invention cannot be achieved. By the way, oils with poor compatibility do not return to the compressor well, which causes seizure of the compressor.
また、平均分子量が300〜700の範囲内（100℃におけ
る粘度が4.0cSt以上、7.1cSt以下）であっても、前記
（Ｉ）式中の両アルキル基の炭素数が９個以上のもので
はフロンR134aとの相溶性が悪く、二相分離温度が高く
なり、冷凍機油として使用することができない。つま
り、分子量が700以下で、かつ両末端のアルキル基の炭
素数が１〜８個のポリオキシプロピレングリコールジア
ルキルエーテルのみがフロンR134aと相溶性があり、冷
凍機油として使用することができる。Even if the average molecular weight is in the range of 300 to 700 (viscosity at 100 ° C. is 4.0 cSt or more and 7.1 cSt or less), if both alkyl groups in the formula (I) have 9 or more carbon atoms, The compatibility with Freon R134a is poor, the two-phase separation temperature becomes high, and it cannot be used as a refrigerator oil. That is, only polyoxypropylene glycol dialkyl ether having a molecular weight of 700 or less and having alkyl groups at both ends having 1 to 8 carbon atoms is compatible with Freon R134a and can be used as a refrigerating machine oil.
本発明のフロン圧縮機用潤滑油において、フロンR134
aとの低温相溶性を一層好ましいものにするためには、
前記（Ｉ）式の化合物のR1およびR2が炭素数２〜４個で
平均分子量が500〜700、あるいはR1およびR2が炭素数５
〜８で平均分子量が300〜600のものを選択するのが好ま
しい。また、潤滑性の面から100℃の粘度が４〜15cStの
ものを、また省エネルギーの面からは48〜10cStのもの
を選択するのが好ましい。In the CFC compressor lubricating oil of the present invention, CFC R134
In order to make the low temperature compatibility with a more preferable,
In the compound of formula (I), R 1 and R 2 have 2 to 4 carbon atoms and an average molecular weight of 500 to 700, or R 1 and R 2 have 5 carbon atoms.
It is preferable to select one having an average molecular weight of 300 to 600 and a molecular weight of 8 to 8. Further, it is preferable to select one having a viscosity of 4 to 15 cSt at 100 ° C. from the viewpoint of lubricity and 48 to 10 cSt from the viewpoint of energy saving.
上述の如く、本発明で使用するポリオキシプロピレン
グリコールジアルキルエーテルはフロンR134aとの低温
相溶性に優れ、また該フロン雰囲気下での潤滑性能、熱
安定性能も良好である。As described above, the polyoxypropylene glycol dialkyl ether used in the present invention has excellent low-temperature compatibility with Freon R134a, and also has good lubricating performance and thermal stability in the Freon atmosphere.
尚、本発明で使用するポリオキシプロピレングリコー
ルジアルキルエーテルに、従来潤滑油基油として使用さ
れている長鎖分岐型又は直鎖型アルキルベンゼンや精製
した鉱油系潤滑油を混合すると、フロンR134aとの相溶
性が低下するため、本発明のフロン圧縮機用潤滑油には
これらを混合すべきではない。Incidentally, when the polyoxypropylene glycol dialkyl ether used in the present invention is mixed with a long-chain branched or straight-chain alkylbenzene or a refined mineral oil-based lubricating oil which has been conventionally used as a lubricating base oil, a phase with CFC R134a is obtained. These should not be mixed with the CFC compressor lubricating oil of the present invention because of reduced solubility.
但し、本発明のフロン圧縮機用潤滑油には、従来冷凍
機油用に使用されている酸化防止剤や塩酸捕捉剤を適宜
添加することができるのは勿論のことである。However, it is needless to say that an antioxidant and a hydrochloric acid scavenger conventionally used for refrigerating machine oil can be appropriately added to the CFC compressor lubricating oil of the present invention.
（実施例） 以下に実施例、比較例および参考例により本発明をよ
り詳しく説明する。(Example) Hereinafter, the present invention will be described in more detail with reference to Examples, Comparative Examples and Reference Examples.
実施例１〜6,比較例１〜5,参考例1,2 ポリオキシプロピレングリコールモノアルキルエーテ
ルとして以下の第１表に示すA1〜６およびA10〜14の供
試油（日本油脂（株）製ユニセーフシリーズ）を使用し
て、R134aフロンの圧縮機用潤滑油としての性能を評価
した。Examples 1 to 6, Comparative Examples 1 to 5, Reference Examples 1 and 2 Test oils of A1 to 6 and A10 to 14 shown in Table 1 below as polyoxypropylene glycol monoalkyl ethers (manufactured by NOF Corporation) Unisafe series) was used to evaluate the performance of R134a Freon as a lubricating oil for compressors.
第１表に示す供試油の圧縮機用潤滑油としての性能と
して潤滑性、相溶性および熱安定性を下記に示す条件の
下で評価した。 As the performance of the test oils shown in Table 1 as lubricating oils for compressors, lubricity, compatibility and thermal stability were evaluated under the conditions shown below.
潤滑性 ASTM D−3233−73に準拠し、ファレックス（Falex）
焼付荷重を、フロンR134aを吹き込み（70ml/min）、雰
囲気を制御して測定した。Lubricity According to ASTM D-3233-73, Falex
The baking load was measured by blowing CFC R134a (70 ml / min) and controlling the atmosphere.
相溶性 供試油0.6gと冷媒（フロンR134a）2.4gとをガラスチ
ューブに封入した後、毎分１℃で冷却して行き、二相分
離を起こす温度、すなわち二相分離温度を測定した。Compatibility The test oil (0.6 g) and the refrigerant (CFC R134a) (2.4 g) were sealed in a glass tube and then cooled at 1 ° C./min to measure the temperature at which two-phase separation occurred, that is, the two-phase separation temperature.
熱安定性 供試油1gと冷媒（フロンR134a）1gと触媒（鉄、銅、
アルミニウムの各線）をガラスチューブに封入した後、
175℃に加熱し、10日後に供試油の色相をASTM表示にて
判定した。Thermal stability 1 g of test oil, 1 g of refrigerant (CFC R134a) and catalyst (iron, copper,
After enclosing each wire of aluminum) in a glass tube,
The sample was heated to 175 ° C., and after 10 days, the hue of the sample oil was judged by ASTM display.
ゴム膨潤性 供試油に対するアクリロニトリル−ブタジエンゴムの
膨潤率（％）を120℃,120時間の条件下で評価した。Rubber swelling The swelling ratio (%) of acrylonitrile-butadiene rubber to the sample oil was evaluated under the conditions of 120 ° C and 120 hours.
尚、参考例として、第１表に示すA3の供試油50％と分
岐型長鎖アルキルベンゼン（粘度29.4cSt（40℃））50
％との混合油、及びA3の供試油50％と中東原油から分離
した潤滑留分を溶剤抽出、水素化精製、脱蝋、白土処理
して得た粘度31.2cSt（40℃）の精製鉱油50％との混合
油についても同様の評価を行った。In addition, as a reference example, 50% of A3 sample oil shown in Table 1 and branched long-chain alkylbenzene (viscosity 29.4 cSt (40 ° C)) 50
%, And 50% A3 sample oil and lubricating fraction separated from Middle East crude oil, solvent-extracted, hydrorefined, dewaxed, and treated with clay to obtain a refined mineral oil with a viscosity of 31.2 cSt (40 ° C). The same evaluation was performed for the mixed oil with 50%.
上記評価結果を以下の第２表に示す。 The evaluation results are shown in Table 2 below.
第２表に示す評価結果より次のことが確認された。 From the evaluation results shown in Table 2, the following was confirmed.
フロンR12と相溶性のある潤滑油でも、フロンR134aと
は溶け合わないことが分かり、フロンR134aに対しては
専用の潤滑油とする必要があることが分かる。It can be seen that even a lubricating oil compatible with Freon R12 does not mix with Freon R134a, and it is necessary to use a dedicated lubricating oil for Freon R134a.
かかる専用潤滑油としての適合性という見地より先ず
実施例１〜６の評価結果を見ると、実施例１〜６はいず
れもフロンR134aとの二相分離温度が−50℃以下と低
く、潤滑性も一般の基準である227kg（500ポンド）より
も相当高く、また熱安定性も色相ASTMにおいてL5.0以下
で問題はなく、更にゴム膨潤率も低いレベルにある。従
って、実施例１〜６の供試油はいずれもフロンR134a用
冷凍機油として好適な油であるといえる。これら実施例
のうち、特に供試油化合物の平均分子量と両アルキル基
の炭素数とを本発明の好適範囲に設定した実施例２〜４
では、より良好な潤滑油としての性能を示している。Looking at the evaluation results of Examples 1 to 6 from the viewpoint of suitability as such a dedicated lubricating oil, in Examples 1 to 6, the two-phase separation temperature with CFC R134a is low at −50 ° C. or lower, and lubricity is low. Is considerably higher than the general standard of 227 kg (500 lbs), thermal stability is L5.0 or less in hue ASTM, there is no problem, and the rubber swelling rate is low. Therefore, it can be said that all of the sample oils of Examples 1 to 6 are suitable as refrigerating machine oil for Freon R134a. Among these Examples, Examples 2 to 4 in which the average molecular weight of the test oil compound and the carbon numbers of both alkyl groups are set within the preferred range of the present invention.
Shows better performance as a lubricating oil.
これに対し、比較例１はフロンR134aとの相溶性は問
題ないが、焼付荷重が他の例に比べると若干劣り、また
ゴム膨張率も高い。また、比較例２〜５は常用の温度範
囲（−40〜＋60℃）においてフロンR134aとの相溶性が
全くないことから、油戻り不良によるコンプレッサーの
焼付きの可能性が高い。従って、比較例１〜６の供試油
はいずれもフロンR134a用冷凍機油としては使用するこ
とができない。In contrast, Comparative Example 1 has no problem in compatibility with Freon R134a, but the baking load is slightly inferior to the other examples, and the rubber expansion coefficient is also high. Further, Comparative Examples 2 to 5 have no compatibility with Freon R134a in the usual temperature range (-40 to + 60 ° C.), and therefore there is a high possibility that the compressor will seize due to poor oil return. Therefore, none of the sample oils of Comparative Examples 1 to 6 can be used as a refrigerating machine oil for Freon R134a.
参考例１および２の供試油もフロンR134aとの相溶性
が悪く、フロンR134a用冷凍機油としては使用すること
ができない。The test oils of Reference Examples 1 and 2 also have poor compatibility with CFC R134a and cannot be used as a refrigerator oil for CFC R134a.
（発明の効果） 以上説明してきたように、本発明のフロン圧縮機用潤
滑油は、冷媒としてのフロンR134aに対し十分な相溶性
を維持しかつ総合性能にも優れていることから、フロン
規制の社会的動向の中、冷媒R12やR22のフロンの代替と
して注目されているフロンR134aを用いても従来システ
ムをそのまま使用することができ、従来フロンの使用量
削減を進める上で十分に寄与することができるという効
果が得られる。(Effects of the Invention) As described above, the lubricating oil for a CFC compressor of the present invention maintains sufficient compatibility with CFC R134a as a refrigerant and is excellent in overall performance. The conventional system can be used as it is even with the Freon R134a, which is attracting attention as an alternative to the Freon of the refrigerant R12 and R22 in the social trends of the above, and it contributes sufficiently in promoting the reduction of the conventional Freon usage The effect that can be obtained is obtained.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−281199（ＪＰ，Ａ) 特開 昭57−63395（ＪＰ，Ａ) 特開 昭55−161895（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-61-281199 (JP, A) JP-A-57-63395 (JP, A) JP-A-55-161895 (JP, A)
Claims (4)
（Ｉ） （式中のR1およびR2は炭素数１〜８個のアルキル基であ
り、R1とR2は同一もしくは異なり、ｎは整数を示す）で
表される化合物を基油とし、1,1,1,2−テトラフルオロ
エタンの圧縮に使用されることを特徴とする、フロン圧
縮機用潤滑油。1. The following general formula (I) having an average molecular weight of 300 to 700. (Wherein R 1 and R 2 are alkyl groups having 1 to 8 carbon atoms, R 1 and R 2 are the same or different, and n is an integer), and a compound represented by A lubricating oil for a CFC compressor, which is used for compressing 1,1,2-tetrafluoroethane.
る粘度が４〜15cStであることを特徴とする、請求項１
記載のフロン圧縮機用潤滑油。2. The lubricating oil for a Freon compressor has a viscosity at 100 ° C. of 4 to 15 cSt.
Lubricating oil for CFC compressor described.
の一般式（Ｉ） （式中のR1およびR2は炭素数１〜８個のアルキル基であ
り、R1とR2は同一もしくは異なり、ｎは整数を示す）で
表される化合物を基油とし、1,1,1,2−テトラフルオロ
エタンの圧縮に使用されることを特徴とする、フロン圧
縮機用潤滑油。3. The following general formula (I) having a viscosity at 100 ° C. of 4.0 to 7.1 cSt. (Wherein R 1 and R 2 are alkyl groups having 1 to 8 carbon atoms, R 1 and R 2 are the same or different, and n is an integer), and a compound represented by A lubricating oil for a CFC compressor, which is used for compressing 1,1,2-tetrafluoroethane.
る粘度が４〜15cStであることを特徴とする、請求項３
記載のフロン圧縮機用潤滑油。4. The viscosity of the freon compressor lubricating oil at 100 ° C. is 4 to 15 cSt.
Lubricating oil for CFC compressor described.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63085347A JP2556548B2 (en) | 1988-04-08 | 1988-04-08 | Lubricating oil used for CFC compressors |
| US07/944,342 US5543068A (en) | 1988-04-08 | 1992-09-14 | Lubricating oils for flon compressors, compositions adapted for flon compressors and composed of mixtures of said lubricating oils and flon, and process for lubricating flon compressor by using said lubricating oils |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63085347A JP2556548B2 (en) | 1988-04-08 | 1988-04-08 | Lubricating oil used for CFC compressors |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8083516A Division JP2831969B2 (en) | 1996-04-05 | 1996-04-05 | Lubricating oil used for CFC compressors for car air conditioners |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01259094A JPH01259094A (en) | 1989-10-16 |
| JP2556548B2 true JP2556548B2 (en) | 1996-11-20 |
Family
ID=13856138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63085347A Expired - Lifetime JP2556548B2 (en) | 1988-04-08 | 1988-04-08 | Lubricating oil used for CFC compressors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2556548B2 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5543068A (en) * | 1988-04-08 | 1996-08-06 | Japan Energy Corporation | Lubricating oils for flon compressors, compositions adapted for flon compressors and composed of mixtures of said lubricating oils and flon, and process for lubricating flon compressor by using said lubricating oils |
| US4916914A (en) * | 1988-05-27 | 1990-04-17 | Cpi Engineering Services, Inc. | Rotary displacement compression heat transfer systems incorporating highly fluorinated refrigerant-synthetic oil lubricant compositions |
| JP2837861B2 (en) * | 1989-01-10 | 1998-12-16 | 旭硝子株式会社 | Tetrafluoroethane refrigerator composition |
| JP2785066B2 (en) * | 1988-12-06 | 1998-08-13 | 出光興産株式会社 | Lubricating oil for compression refrigerators |
| JPH0768534B2 (en) * | 1988-12-06 | 1995-07-26 | 出光興産株式会社 | Lubricating oil for compression type refrigerator |
| JP2673587B2 (en) * | 1989-10-03 | 1997-11-05 | 東燃株式会社 | 1.1.1.2-Refrigerating Lubricating Oil Using Tetrafluoroethane Refrigerant |
| GB8924057D0 (en) | 1989-10-25 | 1989-12-13 | Ici Plc | Lubricants |
| ES2060204T3 (en) * | 1989-11-13 | 1994-11-16 | Idemitsu Kosan Co | USE OF A POLYESTER BASED SYNTHETIC LUBRICATING OIL AS A LUBRICANT IN REFRIGERATORS. |
| JP2967574B2 (en) | 1990-11-16 | 1999-10-25 | 株式会社日立製作所 | Refrigeration equipment |
| DE69221553T2 (en) * | 1991-07-01 | 1997-12-11 | Kao Corp | Working fluid composition for use in refrigeration systems |
| JPH07173479A (en) * | 1993-11-05 | 1995-07-11 | Japan Energy Corp | Lubricating oil for fluorohydrocarbon refrigerant compressor, method for lubricating fluorohydrocarbon refrigerant compressor using the lubricating oil, and working fluid composition for fluorohydrocarbon refrigerant compressor |
| EP0693546B2 (en) | 1994-07-19 | 2009-03-18 | Nippon Mitsubishi Oil Corporation | Refrigerator oil and fluid composition for refrigerator |
| ES2131240T3 (en) | 1994-08-03 | 1999-07-16 | Nippon Oil Co Ltd | COOLING OIL COMPOSITION AND FLUID COMPOSITION FOR REFRIGERATING MACHINES. |
| US5746933A (en) | 1994-11-07 | 1998-05-05 | Nippon Oil Co., Ltd. | Lubricating oil and composition for refrigerating machine, and refrigerating machine |
| US5711895A (en) | 1994-12-12 | 1998-01-27 | Nippon Oil Co., Ltd. | Fluid composition for use in a refrigerating machine in which the refrigerating machine oil is at least one hydrocarbon compound of a formula consisting of two phenyl groups joined through an alkylene or alkenylene group |
| JP2781766B2 (en) * | 1995-12-28 | 1998-07-30 | 旭硝子株式会社 | Tetrafluoroethane refrigerator composition |
| JP2831969B2 (en) * | 1996-04-05 | 1998-12-02 | 株式会社ジャパンエナジー | Lubricating oil used for CFC compressors for car air conditioners |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55161895A (en) * | 1979-06-04 | 1980-12-16 | Hitachi Ltd | Refrigerator oil composition |
| JPS5763395A (en) * | 1980-10-03 | 1982-04-16 | Nippon Oil & Fats Co Ltd | Polyether refrigerator oil composition |
-
1988
- 1988-04-08 JP JP63085347A patent/JP2556548B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01259094A (en) | 1989-10-16 |
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