JPH01259094A - Lubricating oil useful for fluorocarbon compressor - Google Patents
Lubricating oil useful for fluorocarbon compressorInfo
- Publication number
- JPH01259094A JPH01259094A JP8534788A JP8534788A JPH01259094A JP H01259094 A JPH01259094 A JP H01259094A JP 8534788 A JP8534788 A JP 8534788A JP 8534788 A JP8534788 A JP 8534788A JP H01259094 A JPH01259094 A JP H01259094A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- lubricating oil
- freon
- molecular weight
- average molecular
- 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.)
- Granted
Links
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 22
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 10
- 239000002199 base oil Substances 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims 1
- 229920001451 polypropylene glycol Polymers 0.000 abstract description 9
- 150000001983 dialkylethers Chemical class 0.000 abstract description 7
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 33
- 239000003507 refrigerant Substances 0.000 description 7
- 239000002480 mineral oil Substances 0.000 description 6
- 238000005057 refrigeration Methods 0.000 description 6
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 5
- 239000004721 Polyphenylene oxide Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 235000010446 mineral oil Nutrition 0.000 description 4
- 238000005191 phase separation Methods 0.000 description 4
- 229920000570 polyether Polymers 0.000 description 4
- 239000005060 rubber Substances 0.000 description 4
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 150000004996 alkyl benzenes Chemical class 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004338 Dichlorodifluoromethane Substances 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001346 alkyl aryl ethers Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- -1 polyoxypropylene monobutyl ether Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 125000000547 substituted alkyl group Chemical group 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 239000010689 synthetic lubricating oil Substances 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- 229940029284 trichlorofluoromethane Drugs 0.000 description 1
Abstract
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１１ｉ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（Ｉ，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。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a lubricating oil for pressure 11i that uses fluorocarbons as a refrigerant, and in particular, R134a fluorocarbons (I, 1), which do not contain chlorine among fluorocarbons. , 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Ｒ１３４ａのフロンが出現し始めている。(Prior Art) Conventionally, refrigerators, air conditioners, refrigerators, etc. have used fluorocarbons containing fluorine and chlorine as refrigerants, such as R11 (trichloromonofluoromethane), R12 (dichlorodifluoromethane), and R22 (monochlorodifluoromethane). ), but in connection with the recent ozone layer depletion issue, R134a fluorocarbons have begun to appear as a new type of refrigerant that does not have any impact on this problem.
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
機油に必要な性能ニハ、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, many mineral oil-based and synthetic oil-based lubricants have been known for CFC compressor lubricants, but these cannot be used because they are completely incompatible with the new CFC R134a at low temperatures. I understand. Therefore, this countermeasure has become an important issue today. In addition, there are other performance requirements for refrigeration oil, such as lubricity, energy saving, wear resistance, sealing performance, heat resistance, and sludge precipitation prevention properties, and these points also need to be taken into consideration. .
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２
９巻、第９号、第３３６〜３４３頁（Ｉ９８０）および
ベトロチツク誌、第８巻１第６号、第５６２〜５６６頁
（Ｉ９８５）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、
Ｒ＋ （０（ＲＺＯ） Ｒ３） ｎ
で表わされるポリグリコールとアルキルヘンゼン等の混
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５９−１１７５９
０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, polyether-based synthetic lubricating oil is an example of conventionally known synthetic oil, and this is described in Oil Chemistry Journal, Vol. 2.
9, No. 9, pp. 336-343 (I980) and Betrochik, Vol. 8, No. 1, No. 6, pp. 562-566 (I985). Furthermore, as patent examples of conventionally known synthetic oils, Japanese Patent Application Laid-open No. 1981-281199 describes a mixture of polyglycol and alkylhenzene represented by the following formula, R+ (0(RZO) R3) n, JP-A No. 57-63395 discloses an oil in which an epoxycycloalkyl compound is mixed with a polyether, such as polyoxypropylene monobutyl ether having a high molecular weight of 53 moles, and JP-A No. 59-11759.
Publication No. 0 introduces high viscosity mixed oils of polyether compounds and paraffinic or naphthenic mineral oils.
（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 could be used as a lubricating oil for Freon R134a compressors due to 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, mineral oil systems have also been investigated, but the reality is that no favorable results have 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、極めて低温和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, the object of the present invention is to use Freon R134a, which is a new refrigerant and is considered as a substitute for Freon R12.
The object of the present invention is to provide a lubricating oil for fluorocarbon compressors that has extremely good low-temperature compatibility.
（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 Problems) The present inventor conducted intensive research on various mineral oils and synthetic oils to solve the above problems, and found that a specific polyoxypropylene glycol dialkyl ether was able to achieve the object of the present invention. They have found that this is effective and have completed the present invention.
すなわち本発明は、平均分子量３００〜７００を有する
次の一般式（Ｉ）
（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、Ｒ，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することを特徴とする
フロン圧縮機用潤滑油に関するものである。That is, the present invention is directed to the following general formula (I) (I) (wherein R1 and R2 are an alkyl group having 1 to 8 carbon atoms, and R and R2 are the same or different) and have an average molecular weight of 300 to 700. , n is an integer) as a base oil.
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−液式（
Ｉ）で表わされる構造を有し、その平均分子量が３００
〜７００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■、旭電化工業■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 polyoxypropylene glycol (
Among them, those used in the present invention are dialkyl substituted products of both terminal hydrogens of polyether).
It has a structure represented by I), and its average molecular weight is 300.
-700, and the substituted alkyl groups at both ends must have 1 to 8 carbon atoms. Such polyoxypropylene glycol dialkyl ethers can be obtained on the market, for example, from Union Carbide Corporation, Nippon Oil & Fats Corporation (2), Asahi Denka Kogyo (2), and the like.
本発明において、前記−液式（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 liquid formula (I) is limited to within 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, if the average molecular weight is less than 300, the swelling property will be lowered and it will have an adverse effect on sealing materials, rubber, etc. In particular, when used in car air conditioners, the lubricity to the rubber hose is a major factor, so the molecular weight of
It is essential to select the above items. On the other hand, if the molecular weight exceeds 700, the compatibility with Freon R134a decreases, making it impossible to achieve the object of the present invention. Incidentally, oils with poor compatibility do not return well to the compressor, causing the compressor to seize.
また、分子量が本発明の３００〜７００の範囲内であっ
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
。Furthermore, even if the molecular weight is within the range of 300 to 700 according to the present invention, if both alkyl groups in the formula (I) have 9 or more carbon atoms, the compatibility with Freon R134a is poor, resulting in two-phase separation. It becomes too hot to be used as refrigeration oil. In other words, only polyoxypropylene glycol dialkyl ether with a molecular weight of 700 or less and alkyl groups at both ends having 1 to 8 carbon atoms is Freon R134a.
It is compatible with the oil and can be used as refrigeration oil.
本発明のフロン圧縮機用潤滑油において、フロンＲ１３
４ａ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，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１
００°Ｃの粘度が４〜１５ｃＳｔのものを、また省エネ
ルギーの面からは４〜１０ｃＳｔのものを選択するのが
好ましい。In the lubricating oil for a Freon compressor of the present invention, Freon R13
In order to make the low-temperature compatibility with 4a more preferable, R and R2 of the compound of formula (I) have 2 to 2 carbon atoms.
It is preferable to select 4 members with an average molecular weight of 500 to 700, or one in which R1 and R2 have 5 to 8 carbon atoms and an average molecular weight of 300 to 600. Also, in terms of lubricity, 1
It is preferable to select one having a viscosity of 4 to 15 cSt at 00°C, and from the viewpoint of energy saving, one having a viscosity of 4 to 10 cSt.
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 mentioned above, the polyoxypropylene glycol dialkyl ether used in the present invention has excellent low-temperature compatibility with Freon R134a, and has excellent lubrication performance under the atmosphere of Freon.
Thermal stability performance is also good.
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。Furthermore, when long-chain branched or linear alkylbenzenes conventionally used as lubricating oil base oils or refined mineral oil-based lubricating oils are mixed with the polyoxypropylene glycol dialkyl ether used in the present invention, a phase with Freon R134a may occur. These should not be mixed with the fluorocarbon compressor lubricating oil of the present invention, since the solubility will be reduced.
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 goes without saying that the lubricating oil for a fluorocarbon compressor of the present invention may appropriately contain antioxidants and hydrochloric acid scavengers conventionally used in refrigeration oils.
（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。(Examples) The present invention will be explained in more detail below using Examples, Comparative Examples, and Reference Examples.
１１〜６ 巾六 １１〜５ 参
１１ 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
ＡＩＯ〜１４の供試油（日本油脂■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。11-6 width six 11-5 san
11 Using test oils A1 to 6 and AIO to 14 shown in Table 1 below (Unisafe series manufactured by NOF ■) as 2 polyoxypropylene glycol monoalkyl ether, R134a Freon compressor lubricating oil was prepared. The performance was evaluated as follows.
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。The lubricity, compatibility, and thermal stability of the test oils shown in Table 1 as lubricating oils for compressors were evaluated under the conditions shown below.
皿滑盟
ＡＳＴＭ Ｄ−３２３３−７３に準拠し、ファレックス
（Ｆａ １ｅｘ）焼付荷重を、フロンＲ１３４ａを吹き
込み（７０ｍＡ／ｍ１ｎ）、雰囲気を制御して測定した
。In accordance with ASTM D-3233-73, the Falex seizure load was measured by blowing Freon R134a (70 mA/ml) and controlling the atmosphere.
柾溶且
供試油０．６ ｇと冷媒（フロンＲ１３４ａ）２．４
ｇとをガラスチューブに封入した後、毎分１°Ｃ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。0.6 g of dissolved sample oil and 2.4 g of refrigerant (Freon R134a)
g was sealed in a glass tube, and then cooled at 1°C per minute, and the temperature at which two-phase separation occurs, that is, the two-phase separation temperature, was measured.
九皮定且
供試油１ｇと冷媒（フロンＲ１３４ａ） １ ｇと触媒
（鉄、銅、アルミニウムの各！ｆｌＡ）をガラスチュー
ブに封入した後、１７５°Ｃに加熱し、１０日後に供試
油の色相をＡＳＴ？Ｉ表示にて判定した。After sealing 1 g of sample oil, 1 g of refrigerant (Freon R134a), and catalyst (iron, copper, and aluminum flA) in a glass tube, it was heated to 175°C, and after 10 days, the sample oil was sealed. AST the hue of? Judgment was made using I display.
エムｌ星性
供試油に対するアクリロニトリル−ブタジェンゴムの膨
潤率（％）を１２０°Ｃ，１２０時間の条件下で評価し
た。The swelling ratio (%) of the acrylonitrile-butadiene rubber with respect to the emulsion star test oil was evaluated under 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（４
０’Ｃ） ） ５０％との混合油、及びＡ３の供試油５
０％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°Ｃ）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。As a reference example, 50% of the A3 test oil shown in Table 1 and branched long-chain alkylbenzene (viscosity 29.4 cSt (4
0'C)) Mixed oil with 50% and A3 test oil 5
31.2 cSt (viscosity 31.2 cSt) obtained by solvent extraction, hydrorefining, dewaxing, and clay treatment of the lubricating fraction separated from 0% and Middle East crude oil.
A similar evaluation was also performed on a mixed oil with 50% refined mineral oil (40°C).
上記評価結果を以下の第２表に示す。The above 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ｌｉｆ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Ｒ１３
４ａとは溶は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
。Even if lubricating oil is compatible with Freon R12, Freon R13
4a was found to be incompatible with Freon R134a.
It can be seen that it is necessary to use a special lubricant for this purpose.
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一５０°Ｃ以下
と低く、潤滑性も一般の基準であるｎ７ｋｇ （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■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。First, looking at the evaluation results of Examples 1 to 6 from the standpoint of compatibility as such a dedicated lubricating oil, we find that Examples 1 to 6 all have a low two-phase separation temperature with Freon R134a of 150°C or less, and have a low lubrication temperature. Gender is also the general standard n7kg (500
lb), and the heat stability is also as high as Hue ASTM.
There is no problem at L5.0 or less, and the rubber swelling rate is also at a low level. Therefore, it can be said that the sample oils of Examples 1 to 6 are all suitable as refrigeration oil for Freon R134a. Among these Examples, Examples 2 to 4, in which the average molecule (■) of the test oil compound and the number of carbon atoms of both alkyl groups were set within the preferred range of the present invention, showed better performance as a lubricating oil. There is.
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”Ｃ）においてフロンＲ１３４ａ
との相溶性が全くないことから、油戻す不良によるコン
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。On the other hand, Comparative Example 1 has no problem in compatibility with Freon R134a, but its seizure load is slightly inferior compared to other examples, and its rubber expansion rate is also high. In addition, Comparative Examples 2 to 5 are CFC R134a in the normal temperature range (-40 to +60"C).
Since there is no compatibility with the oil, there is a high possibility that the compressor will seize due to poor oil return. Therefore, Comparative Example 1
None of the sample oils No. 6 to 6 can be used as 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 sample oils of Reference Examples 1 and 2 also have poor compatibility with Freon R134a and cannot be used as refrigeration oils 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 explained above, the fluorocarbon compressor lubricating oil of the present invention maintains sufficient compatibility with fluorocarbon R134a as a refrigerant and has excellent overall performance. Amid social trends, the conventional system can be used as is even if fluorocarbon R134a, which is attracting attention as an alternative to the refrigerant R12 and R22, is used as is, making a sufficient contribution to reducing the amount of conventional fluorocarbons used. You can get the effect that you can.
同弁理士 杉 村 興 作Written by the same patent attorney Oki Sugimura
Claims (1)
I ） ▲数式、化学式、表等があります▼（ I ） （式中のＲ＿１およびＲ＿２は炭素数１〜８個のアルキ
ル基であり、Ｒ＿１とＲ＿２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することを特
徴とするフロン圧縮機用潤滑油。 ２、上記（ I ）式において、Ｒ＿１およびＲ＿２が炭
素数２〜４個のアルキル基で、平均分子量が５００〜７
００である請求項１記載のフロン圧縮機用潤滑油。 ３、上記（ I ）式において、Ｒ＿１およびＲ＿２が炭
素数５〜８個のアルキル基で、平均分子量が３００〜６
００である請求項１記載のフロン圧縮機用潤滑油。 ４、Ｒ１３４ａフロンの圧縮に使用するための請求項１
〜３のうちいずれか一項記載のフロン圧縮機用潤滑油。[Claims] 1. The following general formula (having an average molecular weight of 300 to 700)
I) ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) (R_1 and R_2 in the formula are alkyl groups with 1 to 8 carbon atoms, R_1 and R_2 are the same or different, and n
A lubricating oil for fluorocarbon compressors, characterized in that the base oil is a compound represented by (indicates an integer). 2. In the above formula (I), R_1 and R_2 are alkyl groups having 2 to 4 carbon atoms, and the average molecular weight is 500 to 7.
The lubricating oil for a Freon compressor according to claim 1, which is 00. 3. In the above formula (I), R_1 and R_2 are alkyl groups having 5 to 8 carbon atoms, and the average molecular weight is 300 to 6.
The lubricating oil for a Freon compressor according to claim 1, which is 00. 4. Claim 1 for use in compressing R134a Freon
The lubricating oil for a Freon compressor according to any one of 3 to 3.
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 true JPH01259094A (en) | 1989-10-16 |
| JP2556548B2 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) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0237256A (en) * | 1988-05-27 | 1990-02-07 | Cpi Eng Services Inc | Improved refrigerator and method of improving efficiency of refrigerator |
| JPH02182780A (en) * | 1989-01-10 | 1990-07-17 | Asahi Glass Co Ltd | Tetrafluoroethane-base composition for refrigerator |
| JPH02305893A (en) * | 1988-12-06 | 1990-12-19 | Idemitsu Kosan Co Ltd | Lubricating oil for compression refrigerating machine |
| JPH0314894A (en) * | 1988-12-06 | 1991-01-23 | Idemitsu Kosan Co Ltd | Lubricating oil for compression refrigerating machine |
| JPH03121195A (en) * | 1989-10-03 | 1991-05-23 | Tonen Corp | Lubricating oil for refrigerator using 1,1,1,2-tetrafluoroethane refrigerant |
| WO1991007479A1 (en) * | 1989-11-13 | 1991-05-30 | Idemitsu Kosan Co., Ltd. | Synthetic lubricating oil based on polyester |
| US5300245A (en) * | 1991-07-01 | 1994-04-05 | Kao Corporation | Working fluid composition having ketone-containing compound for use in refrigeration system |
| EP0688855A1 (en) | 1990-11-16 | 1995-12-27 | Hitachi, Ltd. | Refrigerating apparatus and refrigerant compressor |
| EP0693546A1 (en) | 1994-07-19 | 1996-01-24 | NIPPON OIL Co. Ltd. | Refrigerator oil and fluid composition for refrigerator |
| EP0699742A2 (en) | 1994-08-03 | 1996-03-06 | Nippon Oil Co. Ltd. | Refrigerator oil composition and fluid composition for refrigerator |
| EP0711824A2 (en) | 1994-11-07 | 1996-05-15 | Nippon Oil Co. Ltd. | Lubricating oil and composition for refrigerating machine, and refrigerating machine |
| EP0717098A2 (en) | 1994-12-12 | 1996-06-19 | Nippon Oil Co. Ltd. | A refrigerating machine oil and a fluid composition for use in a refrigerating machine |
| 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 |
| JPH08239676A (en) * | 1995-12-28 | 1996-09-17 | Asahi Glass Co Ltd | Tetrafluoroethane composition for refrigerator |
| JPH08311473A (en) * | 1996-04-05 | 1996-11-26 | Japan Energy Corp | Lubricating oil for use in chlorofluorocarbon compressor for automotive air conditioner |
| US5711896A (en) * | 1993-11-05 | 1998-01-27 | Japan Energy Corporation | Polyoxyalkylene glycol lubricating oils, working fluid compositions and methods of lubricating |
| US6183661B1 (en) | 1989-10-25 | 2001-02-06 | Imperial Chemical Industries Plc | Composition comprising a hydrofluoroalkane or hydrochlorofluoroalkane and a polyether lubricant |
Citations (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
Patent Citations (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 |
Cited By (19)
| 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 |
| JPH0237256A (en) * | 1988-05-27 | 1990-02-07 | Cpi Eng Services Inc | Improved refrigerator and method of improving efficiency of refrigerator |
| JPH02305893A (en) * | 1988-12-06 | 1990-12-19 | Idemitsu Kosan Co Ltd | Lubricating oil for compression refrigerating machine |
| JPH0314894A (en) * | 1988-12-06 | 1991-01-23 | Idemitsu Kosan Co Ltd | Lubricating oil for compression refrigerating machine |
| JPH02182780A (en) * | 1989-01-10 | 1990-07-17 | Asahi Glass Co Ltd | Tetrafluoroethane-base composition for refrigerator |
| JPH03121195A (en) * | 1989-10-03 | 1991-05-23 | Tonen Corp | Lubricating oil for refrigerator using 1,1,1,2-tetrafluoroethane refrigerant |
| US6183661B1 (en) | 1989-10-25 | 2001-02-06 | Imperial Chemical Industries Plc | Composition comprising a hydrofluoroalkane or hydrochlorofluoroalkane and a polyether lubricant |
| WO1991007479A1 (en) * | 1989-11-13 | 1991-05-30 | Idemitsu Kosan Co., Ltd. | Synthetic lubricating oil based on polyester |
| EP0688855A1 (en) | 1990-11-16 | 1995-12-27 | Hitachi, Ltd. | Refrigerating apparatus and refrigerant compressor |
| EP0688854A1 (en) | 1990-11-16 | 1995-12-27 | Hitachi, Ltd. | Refrigerating apparatus and refrigerant compressor |
| US5401433A (en) * | 1991-07-01 | 1995-03-28 | Kao Corporation | Working fluid composition having ketone-containing compound for use in refrigeration system |
| US5300245A (en) * | 1991-07-01 | 1994-04-05 | Kao Corporation | Working fluid composition having ketone-containing compound for use in refrigeration system |
| US5711896A (en) * | 1993-11-05 | 1998-01-27 | Japan Energy Corporation | Polyoxyalkylene glycol lubricating oils, working fluid compositions and methods of lubricating |
| EP0693546A1 (en) | 1994-07-19 | 1996-01-24 | NIPPON OIL Co. Ltd. | Refrigerator oil and fluid composition for refrigerator |
| EP0699742A2 (en) | 1994-08-03 | 1996-03-06 | Nippon Oil Co. Ltd. | Refrigerator oil composition and fluid composition for refrigerator |
| EP0711824A2 (en) | 1994-11-07 | 1996-05-15 | Nippon Oil Co. Ltd. | Lubricating oil and composition for refrigerating machine, and refrigerating machine |
| EP0717098A2 (en) | 1994-12-12 | 1996-06-19 | Nippon Oil Co. Ltd. | A refrigerating machine oil and a fluid composition for use in a refrigerating machine |
| JPH08239676A (en) * | 1995-12-28 | 1996-09-17 | Asahi Glass Co Ltd | Tetrafluoroethane composition for refrigerator |
| JPH08311473A (en) * | 1996-04-05 | 1996-11-26 | Japan Energy Corp | Lubricating oil for use in chlorofluorocarbon compressor for automotive air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2556548B2 (en) | 1996-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0498152B1 (en) | Lubricant composition for fluorinated refrigerants | |
| JP2759057B2 (en) | Lubricating compositions for refrigeration and air conditioning | |
| JPH01259094A (en) | Lubricating oil useful for fluorocarbon compressor | |
| JP2514090B2 (en) | Lubricating oil composition for freezers | |
| US5154846A (en) | Fluorinated butylene oxide based refrigerant lubricants | |
| JPH01259095A (en) | Lubricating oil useful for fluorocarbon compressor | |
| US5560854A (en) | Working fluid composition for HFC refrigerant compressor containing benzotriazole derivatives, and a process for improving lubrication in a compressor | |
| JPH01259093A (en) | Lubricating oil useful for fluorocarbon compressor | |
| JPH0819430B2 (en) | Refrigerating machine oil composition for refrigerating equipment | |
| JP2774307B2 (en) | Refrigeration oil for fluorinated alkane refrigerant | |
| JPH01118598A (en) | Lubricating oil for chlorofluorocarbon refrigerant | |
| JPH03109492A (en) | Lubricating oil for fluorocarbon compressor | |
| JP2930963B2 (en) | Lubricating oil composition for CFC refrigerant | |
| JP2815160B2 (en) | Refrigeration oil for fluorinated refrigerants | |
| JP2554737B2 (en) | Refrigeration oil for fluorinated alkane refrigerants | |
| JPH0333193A (en) | Refrigerator oil | |
| JP2004043611A (en) | Lubricating oil for refrigerant compression type refrigerating cycle apparatus and working fluid | |
| CA2022832A1 (en) | Polyglycol lubricant composition for use with tetrafluoroethane refrigerant | |
| JP2859253B2 (en) | Refrigeration oil for fluorinated alkane refrigerant | |
| JP3347614B2 (en) | Refrigerator oil composition and lubrication method using the composition | |
| JPH0333192A (en) | Lubricating oil composition for refrigerating machine | |
| JPH0324197A (en) | Refrigerator oil composition | |
| JPH0688086A (en) | Lubricating oil composition | |
| JPH0428792A (en) | Refrigerating machine oil composition | |
| JPH02286780A (en) | Composition for compression refrigerating machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070905 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080905 Year of fee payment: 12 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080905 Year of fee payment: 12 |