JPH0662977B2 - Refrigerant oil for CFC compressor - Google Patents
Refrigerant oil for CFC compressorInfo
- Publication number
- JPH0662977B2 JPH0662977B2 JP63085348A JP8534888A JPH0662977B2 JP H0662977 B2 JPH0662977 B2 JP H0662977B2 JP 63085348 A JP63085348 A JP 63085348A JP 8534888 A JP8534888 A JP 8534888A JP H0662977 B2 JPH0662977 B2 JP H0662977B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- cfc
- refrigerating machine
- compressor
- freon
- 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
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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冷凍機
油に関するものであり、特に、フロンのうちでも塩素を
含まないフロンR134a（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冷凍機油に関する
ものである。Description: TECHNICAL FIELD The present invention relates to a refrigerating machine oil for a compressor that uses Freon as a refrigerant, and in particular, Freon R134a (1,1 The present invention relates to a refrigerating machine oil suitable for use in compressing (1,1,2-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フロ
ンR134a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). ) Are used, but related to the recent ozone depletion problem, Freon R134a is beginning to appear as a new type of refrigerant that has no effect on it.
一方フロン圧縮機用冷凍機油に関しては、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考慮が必要である。On the other hand, with regard to CFC compressor refrigerating machine oils, many mineral oil-based and synthetic oil-based oils are 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 consider these points as well.
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）に紹介があ
る。また、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, there is a polyether-based synthetic lubricating oil as an example of the conventionally known synthetic oil.
Volume, No. 9, pages 336-343 (1980) and Petrotech, Vol. 8, No. 6, pages 562-566 (1985). Further, JP-A-61-281199 discloses a mixture of polyglycol represented by the following formula, R 1 [O- (R 2 O) -R 3 ] n and alkylbenzene, and JP-A-57-63395. Is 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 in JP-A-59-117590, a polyether compound and a paraffin compound or High-viscosity mixed oils of naphthenic mineral oil 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冷凍機油はいず
れも相溶性等の問題からR134aフロン圧縮機用の冷凍機
油にはなり得なかった。(Problems to be Solved by the Invention) However, none of the above-described known synthetic oil-based refrigerating machine oils can be used as a refrigerating machine oil for the R134a CFC 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るR134aフ
ロンに対して、極めて低温相溶性の良いフロン圧縮機用
冷凍機油を提供することにある。Therefore, an object of the present invention is to provide a refrigerating machine oil for a Freon compressor, which has a very low temperature compatibility with R134a Freon, which is a new refrigerant.
（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
エチレンポリオキシプロピレン共重合体モノアルキルエ
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 Problems) The present inventor has conducted diligent research to solve the above problems for various mineral oils and synthetic oils, and found that a specific polyoxyethylene polyoxypropylene copolymer monoalkyl ether The inventors have found that the present invention is effective in achieving the object, and completed the present invention.
すなわち本発明は、平均分子量300〜3000を有する次の
一般式（Ｉ） （式中のＲは炭素数１〜14個のアルキル基、ｍ、ｎは整
数、m:nの比は6:4〜1:9を示す）で表される化合物を基
油とすることを特徴とするフロン圧縮機用冷凍機油に関
するものである。That is, the present invention provides the following general formula (I) having an average molecular weight of 300 to 3000. (Wherein R is an alkyl group having 1 to 14 carbon atoms, m and n are integers, and the ratio of m: n is 6: 4 to 1: 9) is used as a base oil. The present invention relates to a characteristic refrigerant oil for a CFC compressor.
本発明で基油として使用するポリオキシエチレンポリオ
キシプロピレン共重合体モノアルキルエーテルは、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300〜3000の範囲内のもので、ポリオキシエチレン末
端の置換アルキル基が炭素数１〜14個を有することを要
するものである。かかるポリオキシエチレンポリオキシ
プロピレン共重合体モノ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）、三洋化成（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 polyoxyethylene polyoxypropylene copolymer monoalkyl ether used as the base oil in the present invention has a structure represented by the general formula (I), and has an average molecular weight in the range of 300 to 3000, It is required that the substituted alkyl group at the polyoxyethylene terminal has 1 to 14 carbon atoms. Such polyoxyethylene polyoxypropylene copolymer monoalkyl ether can be obtained in the market as, for example, those manufactured by Union Carbide Corporation, NOF Corporation, Sanyo Chemical 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 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
3000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
はコンプレッサー起動時、冷媒潤滑になったり、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, the molecular weight
When it exceeds 3,000, the compatibility with Freon R134a decreases, and the object of the present invention cannot be achieved. By the way, oil with poor compatibility may cause refrigerant lubrication at the time of starting the compressor, or oil return to the compressor may be poor, causing seizure of the compressor.
また、分子量が本発明の300〜3000の範囲内であって
も、前記（Ｉ）式中のアルキル基の炭素数が15個以上の
ものではフロンR134aとの相溶性が悪く、二層分離温度
が高くなり、冷凍機油として使用することができない。Further, even if the molecular weight is in the range of 300 to 3000 of the present invention, if the alkyl group in the formula (I) has 15 or more carbon atoms, the compatibility with Freon R134a is poor and the two-layer separation temperature is high. Becomes too high to be used as refrigerating machine oil.
更に、ポリエチレンオキサイドとポリプロピレンオキサ
イドとの割合が6:4よりもポリエチレンオキサイドの方
が多くなる方向に変化すると、流動点等の低温特性が悪
化し、ついには室温で固化するようになる。又、ポリエ
チレンオキサイドとポリプロピレンオキサイドの割合1:
9よりポリエチレンオキサイドの方が少なくなるとフロ
ンR134aとの相溶性が低下する。Further, when the ratio of polyethylene oxide to polypropylene oxide is changed to be larger than that of 6: 4, the low temperature characteristics such as pour point are deteriorated, and finally solidification occurs at room temperature. Also, the ratio of polyethylene oxide and polypropylene oxide is 1:
When the amount of polyethylene oxide is less than that of 9, the compatibility with Freon R134a decreases.
本発明のフロン圧縮機要冷凍機油において、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Ｒが炭素数２〜４個で平均分子
量が500〜3000、あるいはＲが炭素数５〜14で平均分子
量が300〜2000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４〜40cStのものを選択
するのが好ましい。In the CFC compressor refrigeration oil of the present invention, CFC R134
In order to make the low temperature compatibility with a more preferable,
It is preferable to select a compound of the formula (I) in which R has 2 to 4 carbon atoms and an average molecular weight of 500 to 3000, or R has 5 to 14 carbon atoms and an average molecular weight of 300 to 2000. Also,
From the viewpoint of lubricity, it is preferable to select one having a viscosity of 4 to 40 cSt at 100 ° C.
上述の如く、本発明で使用するポリオキシエチレンポリ
オキシプロピレン共重合体モノ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 polyoxyethylene polyoxypropylene copolymer monoalkyl 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、本発明のフロン圧縮機用冷凍機油には、従来冷凍機
油用に使用されている一般的潤滑油添加剤、例えば酸化
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。Incidentally, it is needless to say that the refrigerating machine oil for the Freon compressor of the present invention can be appropriately added with a general lubricating oil additive conventionally used for refrigerating machine oil, for example, an antioxidant or a hydrochloric acid scavenger. Is.
（実施例） 以下に実施例および比較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 and Comparative Examples.
実施例１〜6,比較例１〜５ ポリオキシエチレンポリオキシプロピレン共重合体モノ
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の供試油を使用して、フロンR134aの圧縮機用
冷凍機油としての性能を評価した。Examples 1 to 6 and Comparative Examples 1 to 5 Polyoxyethylene polyoxypropylene copolymers Monoalkyl ethers were used, and the test oils of A1 to 6 and A10 to 14 shown in Table 1 below were used to prepare CFCs of R Freon R134a. The performance as a compressor refrigeration oil was evaluated.
尚、本実施例で使用した供試油は、いずれも日本油脂
（株）製のユニルーブシリーズのうちのポリオキシエチ
レンポリオキシプロピレン共重合体モノアルキルエーテ
ルタイプのものである。The test oils used in this example are all polyoxyethylene-polyoxypropylene copolymer monoalkyl ether type products from the Unilube series manufactured by NOF CORPORATION.
第１表に示す供試油の圧縮機用冷凍機油としての性能と
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。 The lubricity, compatibility and thermal stability of the test oils shown in Table 1 were evaluated under the conditions shown below as the performance of the compressor refrigerating machine oil.
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、二層分離
を起こす温度、すなわち二層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-layer separation occurred, that is, the two-layer 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、17
5℃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 the sample oil, 1 g of refrigerant (CFC R134a), and catalyst (wires of iron, copper, and aluminum) were sealed in a glass tube, then 17
The sample was heated to 5 ° C., and after 10 days, the hue of the sample oil was evaluated 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.
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.
従来の冷媒（フロンR12）と相溶性のある冷凍機油で
も、フロンR134aとは溶け合わないことが分かり、フロ
ンR134aに対しては専用の冷凍機油とする必要があるこ
とが分かる。It can be seen that even refrigerating machine oil that is compatible with the conventional refrigerant (CFC R12) does not mix with CFC R134a, and it is necessary to use CFC R134a as a dedicated refrigerating machine oil.
かかる専用冷凍機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、潤滑性も鉱油レベルである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、アルキル機の
炭素数、ｍとｎの比を本発明の好適範囲に設定した実施
例２〜４では、より良好な冷凍機油としての性能を示し
ている。From the viewpoint of suitability as such a dedicated refrigerating machine oil, first, when looking at the evaluation results of Examples 1 to 6, in all Examples 1 to 6, the two-phase separation temperature with Freon R134a is as low as −50 ° C. or less, and lubrication is performed. The properties are considerably higher than the mineral oil level of 227 kg (500 lbs), and the thermal stability is not more than L5.0 or less in the color ASTM, 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, particularly in Examples 2 to 4 in which the average molecular weight of the test oil compound, the carbon number of the alkyl machine, and the ratio of m and n are set within the preferred range of the present invention, the performance as a refrigerating machine oil is better. Is shown.
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、冷媒と油の二層分離によるコンプレッ
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。On the other hand, 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 normal temperature range (-40 to + 60 ° C.), and therefore, there is a high possibility that the compressor will seize due to the two-layer separation of the refrigerant and the oil. Therefore, none of the sample oils of Comparative Examples 1 to 6 can be used as a refrigerating machine oil for Freon 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冷凍
機油は、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、フロンR12やR22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、規制対象フロンの使用量削
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 refrigerating machine oil for the Freon compressor of the present invention maintains sufficient compatibility with Freon R134a as a refrigerant and is excellent in overall performance. In the social trend of, the conventional system can be used as it is even if CFC R134a, which is attracting attention as a substitute for CFC R12 and R22, can be used as it is, and it will contribute sufficiently in promoting the reduction of the amount of CFCs subject to regulation. The effect of being able to do is obtained.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 荒川 慶江 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56−131696（ＪＰ，Ａ) “ＰＥＴＲＯＴＥＣＨ”第８巻第６号 （1985）第68−72頁 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Keie Arakawa 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (56) Reference JP-A-56-131696 (JP, A) “PETROTECH” No. 8 Volume 6, (1985) Pages 68-72
Claims (3)
タンを使用するフロン圧縮機用の冷凍機油であって、平
均分子量300〜3000を有する次の一般式（Ｉ） （式中のＲは炭素数１〜14個のアルキル基、ｍ、ｎは整
数、m:nの比は6:4〜1:9を示す）で表される化合物を基
油とすることを特徴とするフロン圧縮機用冷凍機油。1. A refrigerating machine oil for a Freon compressor, which uses 1,1,1,2-tetrafluoroethane as a refrigerant, and has the following general formula (I) having an average molecular weight of 300 to 3000. (Wherein R is an alkyl group having 1 to 14 carbon atoms, m and n are integers, and the ratio of m: n is 6: 4 to 1: 9) is used as a base oil. Refrigerant oil for CFC compressors.
個のアルキル基で、平均分子量が500〜3000である請求
項１記載のフロン圧縮機用冷凍機油。2. In the above formula (I), R has 2 to 4 carbon atoms.
The refrigerating machine oil for a CFC compressor according to claim 1, which has a number of alkyl groups and an average molecular weight of 500 to 3000.
個のアルキル基で、平均分子量が300〜2000である請求
項１記載のフロン圧縮機よ冷凍機油。3. In the above formula (I), R has 5 to 14 carbon atoms.
The CFC-based refrigerating machine refrigerating machine oil according to claim 1, which has an average molecular weight of 300 to 2,000 with each alkyl group.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63085348A JPH0662977B2 (en) | 1988-04-08 | 1988-04-08 | Refrigerant oil for CFC compressor |
| 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 |
|---|---|---|---|
| JP63085348A JPH0662977B2 (en) | 1988-04-08 | 1988-04-08 | Refrigerant oil for CFC compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01259095A JPH01259095A (en) | 1989-10-16 |
| JPH0662977B2 true JPH0662977B2 (en) | 1994-08-17 |
Family
ID=13856169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63085348A Expired - Lifetime JPH0662977B2 (en) | 1988-04-08 | 1988-04-08 | Refrigerant oil for CFC compressor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0662977B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8950019B2 (en) | 2007-09-20 | 2015-02-10 | Bradley Fixtures Corporation | Lavatory system |
| US8997271B2 (en) | 2009-10-07 | 2015-04-07 | Bradley Corporation | Lavatory system with hand dryer |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2595346B2 (en) * | 1988-04-22 | 1997-04-02 | 日本石油株式会社 | Refrigeration oil composition for car air conditioners |
| 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 |
| JP2785185B2 (en) * | 1988-04-22 | 1998-08-13 | 日本石油株式会社 | Refrigeration oil composition for car air conditioners |
| DE68927858T3 (en) * | 1988-11-11 | 2007-05-03 | Asahi Glass Co., Ltd. | TETRAFLUORETHANGEMISCH FOR A REFRIGERATOR |
| JP2761021B2 (en) * | 1989-03-07 | 1998-06-04 | 出光興産株式会社 | Lubricating oil for compression refrigerator and method for producing the same |
| WO1991007479A1 (en) * | 1989-11-13 | 1991-05-30 | Idemitsu Kosan Co., Ltd. | Synthetic lubricating oil based on polyester |
| JP2967574B2 (en) | 1990-11-16 | 1999-10-25 | 株式会社日立製作所 | Refrigeration equipment |
| ES2106143T3 (en) * | 1991-07-01 | 1997-11-01 | Kao Corp | OPERATING FLUID COMPOSITION FOR USE IN A REFRIGERATION SYSTEM. |
| JP3200127B2 (en) | 1991-12-18 | 2001-08-20 | 旭電化工業株式会社 | Lubricants for refrigerators |
| JPH07173479A (en) * | 1993-11-05 | 1995-07-11 | Japan Energy Corp | Lubricating oil for compressor for fluorohydrocarbon refrigerant, method of using the oil for lubricating compressor for fluorohydrocarbon refrigerant, and hydraulic fluid composition for compressor for fluorohydrocarbon refrigerant |
| BR9503366A (en) | 1994-07-19 | 1996-02-27 | Nippon Oil Co Ltd | Cooler oil and oil composition for use with an HFC refrigerant and fluid composition for use in a refrigeration |
| DE69509716T2 (en) | 1994-08-03 | 1999-12-02 | Nippon Oil Co Ltd | Chiller oil composition and refrigerant composition for chiller |
| 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 |
| JP2651375B2 (en) * | 1996-04-04 | 1997-09-10 | 出光興産株式会社 | Refrigeration oil for fluorinated alkane refrigerant |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5558298A (en) * | 1978-10-25 | 1980-04-30 | Nippon Oil Co Ltd | Lubricating oil for rotary refrigerant compressor |
| JPS56131696A (en) * | 1980-03-17 | 1981-10-15 | Matsushita Electric Ind Co Ltd | Lubricating oil compostion |
| JPH06102792B2 (en) * | 1987-10-30 | 1994-12-14 | 出光興産株式会社 | Lubricating oil for fluorine-containing alkane refrigerant |
| JP2514090B2 (en) * | 1988-04-06 | 1996-07-10 | 日本石油株式会社 | Lubricating oil composition for freezers |
-
1988
- 1988-04-08 JP JP63085348A patent/JPH0662977B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| "ＰＥＴＲＯＴＥＣＨ"第８巻第６号（１９８５）第６８−７２頁 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8950019B2 (en) | 2007-09-20 | 2015-02-10 | Bradley Fixtures Corporation | Lavatory system |
| US8997271B2 (en) | 2009-10-07 | 2015-04-07 | Bradley Corporation | Lavatory system with hand dryer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01259095A (en) | 1989-10-16 |
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