JPH02173195A - Lubricating oil for fluorocarbon compressor - Google Patents
Lubricating oil for fluorocarbon compressorInfo
- Publication number
- JPH02173195A JPH02173195A JP32798588A JP32798588A JPH02173195A JP H02173195 A JPH02173195 A JP H02173195A JP 32798588 A JP32798588 A JP 32798588A JP 32798588 A JP32798588 A JP 32798588A JP H02173195 A JPH02173195 A JP H02173195A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating oil
- fluorocarbon
- freon
- oil
- compressor
- 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.)
- Pending
Links
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 19
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 150000001875 compounds Chemical class 0.000 claims abstract description 11
- 125000005702 oxyalkylene group Chemical group 0.000 claims abstract description 6
- 125000006353 oxyethylene group Chemical group 0.000 claims abstract description 5
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000002199 base oil Substances 0.000 claims abstract description 4
- 229920001577 copolymer Polymers 0.000 claims abstract description 4
- 125000001731 2-cyanoethyl group Chemical group [H]C([H])(*)C([H])([H])C#N 0.000 claims abstract description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 4
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 125000004429 atom Chemical group 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract description 14
- 239000003507 refrigerant Substances 0.000 abstract description 12
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 6
- -1 glycol compound Chemical class 0.000 abstract description 6
- 239000003054 catalyst Substances 0.000 abstract description 4
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 abstract description 3
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 16
- 239000010695 polyglycol Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 4
- 238000005191 phase separation Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000004721 Polyphenylene oxide Substances 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000010721 machine oil Substances 0.000 description 3
- 229920000570 polyether Polymers 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-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
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 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
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 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
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- ICQJNCNVUCTBHZ-UHFFFAOYSA-N dec-1-en-1-ol Chemical compound CCCCCCCCC=CO ICQJNCNVUCTBHZ-UHFFFAOYSA-N 0.000 description 1
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 1
- UMNKXPULIDJLSU-UHFFFAOYSA-N dichlorofluoromethane Chemical compound FC(Cl)Cl UMNKXPULIDJLSU-UHFFFAOYSA-N 0.000 description 1
- 229940099364 dichlorofluoromethane Drugs 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- ZQXMSOOKSBKBTN-UHFFFAOYSA-N hexadec-1-ene-1,1-diol Chemical compound CCCCCCCCCCCCCCC=C(O)O ZQXMSOOKSBKBTN-UHFFFAOYSA-N 0.000 description 1
- 229940051250 hexylene glycol Drugs 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000010689 synthetic lubricating oil Substances 0.000 description 1
- FUDOTWBYKLBWCY-UHFFFAOYSA-N tetradec-1-ene-1,1-diol Chemical compound CCCCCCCCCCCCC=C(O)O FUDOTWBYKLBWCY-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Lubricants (AREA)
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 a compressor that uses fluorocarbons as a refrigerant, and in particular, fluorocarbons R134a (1,1 The present invention relates to a lubricating oil suitable for use in compressing 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()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 CFCs containing fluorine and chlorine as refrigerants, such as R11 (dichloromonofluoromethane), R12 (dichlorodifluoromethane), and R22 (monochloromethane). However, due to the recent issue of ozone layer depletion, R134a fluorocarbons have begun to appear as a new type of refrigerant that does not have any impact on the ozone layer depletion 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, 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, other performances required of the refrigerating machine oil include lubricity, energy saving properties, wear resistance, sealing properties, 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(1980)および
ベトロチツク誌、第8巻、第6号、第562〜566頁
(1985)に紹介がある。また、特開昭61−281
199号公報には次式、
R,+0−(R,0)−R3)。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 (1980) and Belotchik, Vol. 8, No. 6, pp. 562-566 (1985). Also, JP-A-61-281
No. 199 has the following formula: R,+0-(R,0)-R3).
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59−11759
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。JP-A No. 57-63395 discloses a mixture of polyglycol and alkylbenzene represented by the above formula, and an oil obtained by mixing an epoxycycloalkyl compound with a polyether, such as polyoxypropylene monobutyl ether having a high molecular weight of 53 moles. , also JP-A-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R−134aフロン圧縮機用の潤
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 R-134a Freon compressors due to problems such as compatibility.
そのような中で、米国特許第4,755,316号には
、フロンR134a用冷凍機油として両末端が水酸基(
−OH)であるポリオキシアルキレングリコール(以下
PAGと略す)が紹介されており、このPAGは末端が
水酸基とアルキル基とより成る一般的なPAGと比較す
るとフロンR134aとの相溶性においてより広い温度
範囲で溶けあい、冷凍システムでのコンプレッサへの油
戻りが改善され、また高温時コンプレッサが起動した時
の焼付きが防止されるとある。そのフロンR134aと
の相溶温度範囲は一40°C〜+50°Cと紹介されて
いる。Under such circumstances, U.S. Patent No. 4,755,316 describes a refrigerating machine oil for Freon R134a that has hydroxyl groups at both ends (
-OH) polyoxyalkylene glycol (hereinafter abbreviated as PAG) has been introduced, and this PAG has a wider temperature range in terms of compatibility with Freon R134a compared to general PAG whose terminals have a hydroxyl group and an alkyl group. This improves oil return to the compressor in refrigeration systems and prevents seizure when the compressor is started at high temperatures. The compatible temperature range with Freon R134a is introduced as -40°C to +50°C.
一方、フロンR134aはフロンR12の代替冷媒候補
であり、主にカーエアコン、冷蔵庫に使用される。特に
、カーエアコンの場合、夏場にコンプレッサが起動する
ためにその温度は+50°Cを遥かに超えることがある
。この場合、上記米国特許第4.755,316号記載
の冷凍機油では起動時コンプレッサ内で油と冷媒が二相
分離をおこし、比重の大きな冷媒が下層となり、潤滑油
がない状態での起動となりコンプレッサが焼付く可能性
がある。つまり、高温での二層分離温度が+50°Cで
は不充分であるといえる。On the other hand, Freon R134a is a candidate refrigerant alternative to Freon R12, and is mainly used in car air conditioners and refrigerators. In particular, in the case of a car air conditioner, the temperature can far exceed +50°C when the compressor starts up in the summer. In this case, with the refrigerating machine oil described in U.S. Pat. No. 4,755,316, the oil and refrigerant undergo two-phase separation in the compressor at startup, and the refrigerant with a higher specific gravity becomes the lower layer, resulting in startup without lubricating oil. The compressor may seize up. In other words, it can be said that a two-layer separation temperature of +50°C is insufficient.
そこで本発明の目的は、特に新しい冷媒であるフロンR
134aに対して、広い温度範囲に亘り極めて相溶性の
良いフロン圧縮機用潤滑油を提供することにある。Therefore, the object of the present invention is to use a new refrigerant, Freon R.
The object of the present invention is to provide a lubricating oil for a Freon compressor that has extremely good compatibility with No. 134a over a wide temperature range.
(課題を解決するための手段)
本発明者は各種の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、特定のシアノエチル化ポリオ
キシアルキレングリコー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 synthetic oils to solve the above problems, and found that a specific cyanoethylated polyoxyalkylene glycol was effective in achieving the object of the present invention. This discovery led to the completion of the present invention.
すなわち本発明は、次の一般式(1)
%式%(1)
(式中のRは炭素数1〜12個の炭化水素基、シアノエ
チル基、または水素原子、AOは炭素数2〜18個のオ
キシアルキレン基、n =1〜50である)で表わされ
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 based on the following general formula (1) % formula % (1) (R in the formula is a hydrocarbon group having 1 to 12 carbon atoms, a cyanoethyl group, or a hydrogen atom, and AO is a hydrogen atom having 2 to 18 carbon atoms. The present invention relates to a lubricating oil for a Freon compressor, characterized in that the base oil is a compound represented by the following oxyalkylene group, n = 1 to 50.
上記一般式(1)中のAOで示されるオキシアルキレン
基としては、オキシエチレン、オキシプロピレン、オキ
シブチレン、オキシヘキシレン、オキシスチレン、オキ
シオクテン、オキシドデセン、オキシテトラデセン、オ
キシヘキサデセン、オキシオクタデセン等がある。その
中でもフロンR134aとの相溶温度範囲がより広いも
のはオキシエチレン、オキシプロピレンであり、両者の
共重合体も好ましく、特に好ましくはオキシエチレンの
比率が75%以下の該共重合体である。The oxyalkylene group represented by AO in the above general formula (1) includes oxyethylene, oxypropylene, oxybutylene, oxyhexylene, oxystyrene, oxyoctene, oxidodecene, oxytetradecene, oxyhexadecene, and oxyoctadecene. etc. Among them, oxyethylene and oxypropylene have a broader temperature range of compatibility with Freon R134a, and copolymers of both are also preferred, and copolymers with an oxyethylene ratio of 75% or less are particularly preferred.
上記一般式(1)弐のRならびにn(重合度)を上述の
如く限定した理由は相溶温度範囲を一定レベル以上にす
るためであり、フロン圧縮機用潤滑油としての他の特性
である潤滑性能、熱安定性能については限定範囲外のも
のでも問題はない。尚、nについては大きくなるに従い
(すなわち、高分子量になるに従い)相溶性温度範囲が
狭くなる傾向にある。The reason why R and n (degree of polymerization) in general formula (1) 2 are limited as described above is to keep the compatible temperature range above a certain level, and other characteristics as lubricating oil for fluorocarbon compressors. Regarding lubrication performance and thermal stability performance, there is no problem even if it is outside the limited range. Note that as n increases (that is, as the molecular weight increases), the compatibility temperature range tends to become narrower.
上記一般式(1)弐で表わされるシアノエチル化ポリオ
キシアルキレングリコール化合物は市販品にはなく、試
作し検討した結果見い出されたものである。かかる化合
物は、次の一般式(2)、R−0−→AO母H(2)
(式中のR,AOおよびnは上記一般式(1)の化合物
のものと同じものである)で表わされる化合物に水酸化
ナトリウム、水酸化カリウム等を触媒として、所要量の
アクリロニトリルを反応させることによって得ることが
できる。The cyanoethylated polyoxyalkylene glycol compound represented by the above general formula (1)2 is not available commercially, but was discovered as a result of trial production and study. Such a compound has the following general formula (2), R-0-→AO mother H(2) (R, AO and n in the formula are the same as those of the compound of the above general formula (1)). It can be obtained by reacting the represented compound with a required amount of acrylonitrile using sodium hydroxide, potassium hydroxide, etc. as a catalyst.
上記一般式(2)の化合物は、Rで示される炭化水素基
を持つアルコール、またはAOで示されるオキシアルキ
レンと水との反応生成物とみなし得るグリコールに、触
媒の存在下でオキシアルキレンを付加させることによっ
て得ることができる。ここで言うアルコールまたはグリ
コールとしては、メタノール、エタノール、プロパツー
ル、ブタノール、エチレングリコール、プロピレングリ
コール、ブチレングリコール、ヘキシレングリコール、
オクテンジオール、ドデセンジオール、テトラデセンジ
オール、ヘキサデセンジオール、オクタデセンジオール
等がある。The compound of the above general formula (2) is an alcohol having a hydrocarbon group represented by R, or a glycol which can be regarded as a reaction product of oxyalkylene represented by AO and water, in which oxyalkylene is added in the presence of a catalyst. It can be obtained by letting The alcohols or glycols mentioned here include methanol, ethanol, propatool, butanol, ethylene glycol, propylene glycol, butylene glycol, hexylene glycol,
These include octenediol, dodecenediol, tetradecenediol, hexadecenediol, octadecenediol, and the like.
前述の如く、R134aのフロンは従来の冷媒と挙動が
異なり、低温時だけでなく高温時での二相分離の問題が
あるが、本発明で使用するシアノエチル化ポリオキシア
ルキレングリコールは低温と高温のいずれにおいても相
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, R134a fluorocarbons behave differently from conventional refrigerants and have the problem of two-phase separation not only at low temperatures but also at high temperatures. In either case, the compatibility is excellent, and the lubrication performance and thermal stability performance in the fluorocarbon atmosphere are also good.
尚、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、摩耗防止
剤を適宜添加することができるのは勿論のことであり、
また粘度調整等のため、船釣なPAGを混合して使用す
ることもできる。It goes without saying that the fluorocarbon compressor lubricating oil of the present invention may contain appropriate antioxidants, hydrochloric acid scavengers, and anti-wear agents that have been conventionally used in refrigeration oils.
In addition, for viscosity adjustment, etc., a boat fishing PAG can be mixed and used.
(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。(Examples) The present invention will be explained in more detail below using Examples and Comparative Examples.
−11〜 8 六 1〜5シアンエチ
ル化ポリオキシアルキレングリコールとして以下の第1
表に示すA1〜8の供試油を、また比較例として第2表
の一般的なPAGであるB1〜5(市販品二日本油脂(
株)製)を使用して、フロンR134aの圧縮機用潤滑
油としての性能を評価した。尚、A1〜8については、
いずれも試作品である。-11 to 8 6 1 to 5 cyanethylated polyoxyalkylene glycol as the following first
The test oils A1 to 8 shown in the table were used as comparative examples, and the common PAGs B1 to B5 (commercial product Nippon Oil Co., Ltd.) shown in Table 2 were used as comparative examples.
The performance of Freon R134a as a lubricating oil for compressors was evaluated. Regarding A1-8,
Both are prototypes.
」肢−じし−1=
?、D R1+ R2+ AO,nは次の一般式(3)
、RO−f−AO袷R2(3)
で表わされる化合物中のものに対応する。” Limb-Jishi-1 = ? , D R1+ R2+ AO,n is the following general formula (3)
, corresponds to that in the compound represented by RO-f-AO R2 (3).
第1表および第2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 performance of the test oils shown in Tables 1 and 2 as lubricating oils for compressors was evaluated under the conditions shown below in terms of lubricity, compatibility, and thermal stability.
M吋並
ASTM D−3233−73に準拠し、ファレックス
(Falex)焼付荷重をR134aフロンの吹き込み
制御雰囲気下(70mffi / m1n)、で測定し
た。The Falex seizure load was measured in accordance with ASTM D-3233-73 under a controlled atmosphere of R134a Freon blowing (70 mffi/m1n).
’AMJ±
供試油0.6g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での冷却
と昇温とを行い、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。'AMJ± 0.6 g of sample oil and 2.4 g of refrigerant (Freon R134a)
was sealed in a glass tube, and then cooled and heated at a rate of 1°C per minute, and the temperature at which two-phase separation occurs, that is, the two-phase separation temperature, was measured.
荒皮定住
供試油1gと冷媒(フロンRI34a) 1 g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°Cに加熱し、10日後に供試油の色
相をASTM表示にて判定した。After sealing 1 g of rough skin test oil, 1 g of refrigerant (Freon RI34a), and catalyst (iron, copper, and aluminum wires) in a glass tube, it was heated to 175°C, and after 10 days, the hue of the test oil was determined. Judgment was made using ASTM display.
上記評価結果を以下の第3表に示す。The above evaluation results are shown in Table 3 below.
」Δ−」L−1− 第3表に示す評価結果より次のことが確認された。"Δ-" L-1- From the evaluation results shown in Table 3, the following was confirmed.
供試油については、すべて焼付荷重、熱安定性は問題な
(、ポイントは二層分離温度である。低温の二層分離温
度については83. B5以外は充分低く、また高温の
二層分離温度については実施例はすべて60°C以上で
あり、米国特許第4,755,316号明細書開示の範
囲相当の比較例1よりも充分高いことが分かる。その中
でも、実施例1,2.4は特に高く、フロンR134,
aとの相溶温度範囲は広いといえる。Regarding the test oils, the seizure load and thermal stability are all problematic (the key point is the two-layer separation temperature.The low-temperature two-layer separation temperature is 83. It can be seen that the temperatures in all Examples are 60°C or higher, which is sufficiently higher than Comparative Example 1, which corresponds to the range disclosed in U.S. Pat. No. 4,755,316.Among them, Examples 1, 2.4 is particularly high, Freon R134,
It can be said that the temperature range of compatibility with a is wide.
(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、従来
のR12やR22のフロンに代わりR134aフロンを
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. Even if R134a Freon is used in place of R12 or R22 Freon, the effect is that the conventional system can be used as is.
Claims (1)
チル基、または水素原子、AOは炭素数2〜18個のオ
キシアルキレン基、n=1〜50である)で表わされる
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(1)式においてAOがオキシプロピレンであ
り、Rが水素原子である請求項1記載のフロン圧縮機用
潤滑油。 3、上記(1)式においてAOがオキシプロピレンとオ
キシエチレンの共重合体から成り、オキシエチレンの比
率が75%以下であり、Rが水素原子である請求項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 (1) ▲ Numerical formulas, chemical formulas, tables, etc. ▼ (1) (R in the formula is a hydrocarbon group having 1 to 12 carbon atoms, a cyanoethyl group, or hydrogen lubricating oil 2 for fluorocarbon compressors, characterized in that the base oil is a compound represented by atom, AO is an oxyalkylene group having 2 to 18 carbon atoms, n = 1 to 50, the above formula (1) The lubricating oil for a fluorocarbon compressor according to claim 1, wherein AO is oxypropylene and R is a hydrogen atom. 3. The lubricating oil for fluorocarbon compressors according to claim 1, wherein in the above formula (1), AO is composed of a copolymer of oxypropylene and oxyethylene, the ratio of oxyethylene is 75% or less, and R is a hydrogen atom. . 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 (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32798588A JPH02173195A (en) | 1988-12-27 | 1988-12-27 | Lubricating oil for fluorocarbon compressor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32798588A JPH02173195A (en) | 1988-12-27 | 1988-12-27 | Lubricating oil for fluorocarbon compressor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02173195A true JPH02173195A (en) | 1990-07-04 |
Family
ID=18205210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP32798588A Pending JPH02173195A (en) | 1988-12-27 | 1988-12-27 | Lubricating oil for fluorocarbon compressor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02173195A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5300245A (en) * | 1991-07-01 | 1994-04-05 | Kao Corporation | Working fluid composition having ketone-containing compound for use in refrigeration system |
-
1988
- 1988-12-27 JP JP32798588A patent/JPH02173195A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5300245A (en) * | 1991-07-01 | 1994-04-05 | Kao Corporation | Working fluid composition having ketone-containing compound for use in refrigeration system |
US5401433A (en) * | 1991-07-01 | 1995-03-28 | Kao Corporation | Working fluid composition having ketone-containing compound for use in refrigeration system |
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