JPH01153792A - 冷凍機油組成物 - Google Patents
冷凍機油組成物Info
- Publication number
- JPH01153792A JPH01153792A JP62312357A JP31235787A JPH01153792A JP H01153792 A JPH01153792 A JP H01153792A JP 62312357 A JP62312357 A JP 62312357A JP 31235787 A JP31235787 A JP 31235787A JP H01153792 A JPH01153792 A JP H01153792A
- Authority
- JP
- Japan
- Prior art keywords
- fluorine
- oil
- carbon atoms
- substituted
- group
- 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
- 239000000203 mixture Substances 0.000 title claims abstract description 18
- 239000003921 oil Substances 0.000 claims abstract description 20
- 239000002199 base oil Substances 0.000 claims abstract description 16
- 239000002480 mineral oil Substances 0.000 claims abstract description 7
- 235000010446 mineral oil Nutrition 0.000 claims abstract description 6
- 125000003118 aryl group Chemical group 0.000 claims abstract description 4
- 125000000753 cycloalkyl group Chemical group 0.000 claims abstract description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 23
- 239000010721 machine oil Substances 0.000 claims description 10
- 150000002222 fluorine compounds Chemical class 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 1
- 239000003507 refrigerant Substances 0.000 abstract description 10
- 150000001875 compounds Chemical class 0.000 abstract description 5
- 229920001296 polysiloxane Polymers 0.000 abstract description 4
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 150000002148 esters Chemical class 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 2
- 150000004996 alkyl benzenes Chemical class 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 229920013639 polyalphaolefin Polymers 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 229920000151 polyglycol Polymers 0.000 description 2
- 239000010695 polyglycol Substances 0.000 description 2
- -1 polyol ester Chemical class 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000003054 catalyst 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
- 239000004927 clay Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000006078 metal deactivator Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
Classifications
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- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/50—Lubricating compositions characterised by the base-material being a macromolecular compound containing silicon
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
- C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
- C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
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- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
- C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
- C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
- C09K5/045—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
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Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
め要約のデータは記録されません。
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は冷凍機油組成物に関し、詳しくは基油に特定の
フッ素化合物を添加しでなり、各種のフロン系化合物等
の冷媒に対して安定で、しかも耐焼付性等の優れた冷凍
機油組成物に関する。
フッ素化合物を添加しでなり、各種のフロン系化合物等
の冷媒に対して安定で、しかも耐焼付性等の優れた冷凍
機油組成物に関する。
〔従来の技術及び発明が解決しようとする問題点〕一般
に、冷凍機油に要求される性能は、フロン等の冷媒に対
して安定であるとともに、耐焼付性や耐摩耗性等の潤滑
性に優れていることがあげられる。特に、最近に至って
はコンプレッサーの回転数が高くなり、またインバータ
ー化されるなど冷凍機が過酷な条件下で運転されるよう
になってきており、潤滑性の一層の向上が必要不可欠の
条件になってきている。
に、冷凍機油に要求される性能は、フロン等の冷媒に対
して安定であるとともに、耐焼付性や耐摩耗性等の潤滑
性に優れていることがあげられる。特に、最近に至って
はコンプレッサーの回転数が高くなり、またインバータ
ー化されるなど冷凍機が過酷な条件下で運転されるよう
になってきており、潤滑性の一層の向上が必要不可欠の
条件になってきている。
従来、冷凍機油の潤滑性を向上させる方策としては、基
油にトリクレジルホスフェート(TCP)等のリン系化
合物やジアルキルスルフィド等のイオウ系化合物などが
配合されていたが、潤滑性の向上に限界があり、しかも
、冷媒に対する安定性が悪いという問題があった。
油にトリクレジルホスフェート(TCP)等のリン系化
合物やジアルキルスルフィド等のイオウ系化合物などが
配合されていたが、潤滑性の向上に限界があり、しかも
、冷媒に対する安定性が悪いという問題があった。
そこで、本発明者は上記従来の冷凍機油等の問題点を解
消し、耐焼付荷重が高く、しかも各種の冷媒に対して安
定性を有する冷凍機油組成物を開発すべく鋭意研究を重
ねた。
消し、耐焼付荷重が高く、しかも各種の冷媒に対して安
定性を有する冷凍機油組成物を開発すべく鋭意研究を重
ねた。
その結果、特定のフッ素化合物を基油に添加することに
より上記目的を達成しうろことを見出し、本発明を完成
するに至った。すなわち本発明は、鉱油及び/又は合成
油からなる基油に、−数式 %式% 〔式中、R1,R2はそれぞれ炭素数1〜20のアルキ
ル基、炭素数6〜30のアリール基、炭素数6〜30の
シクロアルキル基。
より上記目的を達成しうろことを見出し、本発明を完成
するに至った。すなわち本発明は、鉱油及び/又は合成
油からなる基油に、−数式 %式% 〔式中、R1,R2はそれぞれ炭素数1〜20のアルキ
ル基、炭素数6〜30のアリール基、炭素数6〜30の
シクロアルキル基。
炭素数1〜20のフッ素置換アルキル基。
炭素数6〜30のフッ素置換アリール基あるいは炭素数
6〜30のフッ素置換シクロアルキル基を示し、R3−
Rhはそれぞれ炭素数1〜20のフッ素置換アルキル基
、炭素数6〜30のフッ素置換アリール基あるいは炭素
数6〜30のフッ素置換シクロアルキル基を示す。また
、mは1〜100のいずれかの数を示す。〕 で表わされるフッ素化合物をO,OOO5〜50重量%
の割合で配合することを特徴とする冷凍機油組成物を提
供するものである。
6〜30のフッ素置換シクロアルキル基を示し、R3−
Rhはそれぞれ炭素数1〜20のフッ素置換アルキル基
、炭素数6〜30のフッ素置換アリール基あるいは炭素
数6〜30のフッ素置換シクロアルキル基を示す。また
、mは1〜100のいずれかの数を示す。〕 で表わされるフッ素化合物をO,OOO5〜50重量%
の割合で配合することを特徴とする冷凍機油組成物を提
供するものである。
本発明の冷凍機油組成物は、上述の如く鉱油。
合成油を単独であるいは両者を混合したものを基油とし
て用いる。この基油の性状については特に制限はないが
、通常は40°Cにおける動粘度が5〜500cSt、
好ましくは10〜300cStである。
て用いる。この基油の性状については特に制限はないが
、通常は40°Cにおける動粘度が5〜500cSt、
好ましくは10〜300cStである。
ここで動粘度が5cSt未満のものでは、蒸発による油
消費量が多く、また油循環量が多くなり、さらにシール
性が悪いという問題がある。ここで基油として用いる鉱
油の例としては、パラフィン基系原油、中間基系原油あ
るいはナフテン基系原油を常圧蒸留するかあるいは常圧
蒸留の残渣油を減圧蒸留して得られる留出油、またはこ
れを常法にしたがって精製することによって得られる精
製油、例えば溶剤精製油、水添精製油、脱ロウ処理油。
消費量が多く、また油循環量が多くなり、さらにシール
性が悪いという問題がある。ここで基油として用いる鉱
油の例としては、パラフィン基系原油、中間基系原油あ
るいはナフテン基系原油を常圧蒸留するかあるいは常圧
蒸留の残渣油を減圧蒸留して得られる留出油、またはこ
れを常法にしたがって精製することによって得られる精
製油、例えば溶剤精製油、水添精製油、脱ロウ処理油。
白土処理油等をあげることができる。
また、合成油としてはアルキルベンゼン、アルキルジフ
ェニル、ポリα−オレフィン、エステル(ヒンダードエ
ステル、二塩基酸エステル、ポリオールエステル、リン
酸エステル)、ポリエーテル(ポリフェニルエーテル、
ポリグリコールエーテル)、シリコーンオイルなどがあ
る。
ェニル、ポリα−オレフィン、エステル(ヒンダードエ
ステル、二塩基酸エステル、ポリオールエステル、リン
酸エステル)、ポリエーテル(ポリフェニルエーテル、
ポリグリコールエーテル)、シリコーンオイルなどがあ
る。
本発明の基油としては、上記の鉱油あるいは合成油を用
いることができるが、難溶性冷媒に対する熔解性(安定
性)を考慮すると、合成油を用いることが好ましく、特
にアルキルベンゼン、アルキルジフェニル、エステル、
ポリエーテルが好ましい。
いることができるが、難溶性冷媒に対する熔解性(安定
性)を考慮すると、合成油を用いることが好ましく、特
にアルキルベンゼン、アルキルジフェニル、エステル、
ポリエーテルが好ましい。
本発明の組成物は、上記基油に前記−数式(I)で表わ
されるフッ素化合物を添加する。ここで−数式(1)で
表わされるフッ素化合物としては、各種のものがあるが
、−数式(I)中におけるR’IR2はそれぞれ炭素数
1〜20のアルキル基、炭素数6〜30のアリール基、
炭素数6〜30のシクロアルキル基、炭素数1〜20の
フッ素置換アルキル基、炭素数6〜30のフッ素置換ア
リール基あるいは炭素数6〜30のフッ素置換シクロア
ルキル基を示す。またR3−R6はそれぞれ炭素数1〜
20のフッ素置換アルキル基、炭素数6〜30のフッ素
置換アリール基あるいは炭素数6〜30のフッ素置換シ
クロアルキル基を示すが、好ましくは炭素数1〜4のフ
ッ素置換アルキル基である。
されるフッ素化合物を添加する。ここで−数式(1)で
表わされるフッ素化合物としては、各種のものがあるが
、−数式(I)中におけるR’IR2はそれぞれ炭素数
1〜20のアルキル基、炭素数6〜30のアリール基、
炭素数6〜30のシクロアルキル基、炭素数1〜20の
フッ素置換アルキル基、炭素数6〜30のフッ素置換ア
リール基あるいは炭素数6〜30のフッ素置換シクロア
ルキル基を示す。またR3−R6はそれぞれ炭素数1〜
20のフッ素置換アルキル基、炭素数6〜30のフッ素
置換アリール基あるいは炭素数6〜30のフッ素置換シ
クロアルキル基を示すが、好ましくは炭素数1〜4のフ
ッ素置換アルキル基である。
mは1〜100、好ましくは3〜50のいずれかの数を
示す。
示す。
この−数式(1)の化合物の具体例としては、弐
F 3 CH4Cz C2H4CF sCH3
+5i−0+r−3i−CH3・ ・ ・ (■I)I F s CH4Cz C2Ha CF 3で表
わされるポリフルオロアルキルシロキサンをあげること
ができ、このような化合物の市販品としては、上記式(
I”)(但し、mは約10〜30)のポリフルオロアル
キルシロキサン(信越シリコーン■製、FL−100)
を充当すればよい。
+5i−0+r−3i−CH3・ ・ ・ (■I)I F s CH4Cz C2Ha CF 3で表
わされるポリフルオロアルキルシロキサンをあげること
ができ、このような化合物の市販品としては、上記式(
I”)(但し、mは約10〜30)のポリフルオロアル
キルシロキサン(信越シリコーン■製、FL−100)
を充当すればよい。
本発明の組成物では、基油に対して上記−数式(I)の
フッ素化合物を0.0005〜50重量%、好ましくは
0.001〜30重量%、さらに好ましくは0.01〜
10重量%の割合で配合する。配合割合が0. OOO
5重量%未満では、潤滑性の向上効果がほとんど認めら
れず、また50重量%を超えると基油中にフッ素化合物
が均一に分散しないなどの問題が生ずる。
フッ素化合物を0.0005〜50重量%、好ましくは
0.001〜30重量%、さらに好ましくは0.01〜
10重量%の割合で配合する。配合割合が0. OOO
5重量%未満では、潤滑性の向上効果がほとんど認めら
れず、また50重量%を超えると基油中にフッ素化合物
が均一に分散しないなどの問題が生ずる。
本発明の組成物では、さらに必要に応じて摩耗防止剤、
塩素捕捉剤、酸化防止剤、金属不活性化剤、消泡剤等を
適量配合すことも有効である。
塩素捕捉剤、酸化防止剤、金属不活性化剤、消泡剤等を
適量配合すことも有効である。
次に、本発明を実施例および比較例により更に詳しく説
明する。
明する。
実施例1〜8および比較例1〜6
第1表に示す鉱油、ポリα−オレフィン、アルキルヘン
ゼン、ヒンダードエステルあるいはポリグリコールを基
油とし、またフッ素化合物として一般式(I゛)のフッ
素化シリコーン(式中のmは約12(平均値)であり、
40°Cの動粘度80cSt。
ゼン、ヒンダードエステルあるいはポリグリコールを基
油とし、またフッ素化合物として一般式(I゛)のフッ
素化シリコーン(式中のmは約12(平均値)であり、
40°Cの動粘度80cSt。
粘度指数210)を用いて組成物を調製し、下記の方法
にしたがってその性能評価を行った。結果を第2.3表
に示す。
にしたがってその性能評価を行った。結果を第2.3表
に示す。
ファレックス焼付試験
ASTM D 3233に準拠し、焼付荷重(ボンド
)で評価した。
)で評価した。
シールドチューブ試験
試料とフロン−22との2:1(重量)混合物を鉄、銅
、アルミニウムの触媒とともに、ガラス管に封入し、1
75°Cにおいて720時間加熱後、その外観ならびに
析出物の有無を測定し、促S AK′看 P 穆− 餐 薫 第2.3表かられかるように、比較例では焼付荷重が小
さく、またシールドチューブ試験でも析出物が生じた。
、アルミニウムの触媒とともに、ガラス管に封入し、1
75°Cにおいて720時間加熱後、その外観ならびに
析出物の有無を測定し、促S AK′看 P 穆− 餐 薫 第2.3表かられかるように、比較例では焼付荷重が小
さく、またシールドチューブ試験でも析出物が生じた。
これに対して、実施例では焼付荷重も大きく、耐熱性に
もすぐれている。
もすぐれている。
以上の如く、本発明の冷凍機油組成物は、各種の冷媒に
安定であり、特に一般に難溶性冷媒とされる冷媒に対し
ても、相溶性が良好であり安定性にすぐれている。また
耐焼付性が高く、蒸発による油消費量も少なく、油循環
量も少なくすることができる。
安定であり、特に一般に難溶性冷媒とされる冷媒に対し
ても、相溶性が良好であり安定性にすぐれている。また
耐焼付性が高く、蒸発による油消費量も少なく、油循環
量も少なくすることができる。
したがって、本発明の冷凍機油組成物は、各種のフロン
化合物等を冷媒として用いる冷凍機、クーラー(特にカ
ーエアコン)、ヒートポンプ等の潤滑剤として有効に利
用される。
化合物等を冷媒として用いる冷凍機、クーラー(特にカ
ーエアコン)、ヒートポンプ等の潤滑剤として有効に利
用される。
Claims (1)
- (1)鉱油及び/又は合成油からなる基油に、一般式 ▲数式、化学式、表等があります▼ 〔式中、R^1、R^2はそれぞれ炭素数1〜20のア
ルキル基、炭素数6〜30のアリール 基、炭素数6〜30のシクロアルキル基、 炭素数1〜20のフッ素置換アルキル基、 炭素数6〜30のフッ素置換アリール基あ るいは炭素数6〜30のフッ素置換シクロ アルキル基を示し、R^3〜R^6はそれぞれ炭素数1
〜20のフッ素置換アルキル基、炭 素数6〜30のフッ素置換アリール基ある いは炭素数6〜30のフッ素置換シクロア ルキル基を示す。また、mは1〜100の いずれかの数を示す。〕 で表わされるフッ素化合物を0.0005〜50重量%
の割合で配合することを特徴とする冷凍機油組成物。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62312357A JP2543919B2 (ja) | 1987-12-11 | 1987-12-11 | 冷凍機油組成物 |
US07/280,959 US4946611A (en) | 1987-12-11 | 1988-12-07 | Refrigerator oil containing fluorinated siloxane compounds |
KR1019880016614A KR930010532B1 (ko) | 1987-12-11 | 1988-12-12 | 냉동기유 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62312357A JP2543919B2 (ja) | 1987-12-11 | 1987-12-11 | 冷凍機油組成物 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01153792A true JPH01153792A (ja) | 1989-06-15 |
JP2543919B2 JP2543919B2 (ja) | 1996-10-16 |
Family
ID=18028273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62312357A Expired - Lifetime JP2543919B2 (ja) | 1987-12-11 | 1987-12-11 | 冷凍機油組成物 |
Country Status (3)
Country | Link |
---|---|
US (1) | US4946611A (ja) |
JP (1) | JP2543919B2 (ja) |
KR (1) | KR930010532B1 (ja) |
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US4324671A (en) * | 1979-12-04 | 1982-04-13 | The United States Of America As Represented By The Secretary Of The Air Force | Grease compositions based on fluorinated polysiloxanes |
-
1987
- 1987-12-11 JP JP62312357A patent/JP2543919B2/ja not_active Expired - Lifetime
-
1988
- 1988-12-07 US US07/280,959 patent/US4946611A/en not_active Expired - Fee Related
- 1988-12-12 KR KR1019880016614A patent/KR930010532B1/ko not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59105091A (ja) * | 1982-12-06 | 1984-06-18 | Nishi Nippon Tsusho Kk | 冷凍機油組成物 |
JPS59105092A (ja) * | 1982-12-06 | 1984-06-18 | Nishi Nippon Tsusho Kk | 冷凍機油組成物 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991009921A1 (en) * | 1989-12-21 | 1991-07-11 | Allied-Signal Inc. | Partially fluorinated silicone refrigeration lubricants |
JPH08127787A (ja) * | 1994-10-28 | 1996-05-21 | Toray Dow Corning Silicone Co Ltd | 液状組成物 |
WO1997003153A1 (en) * | 1995-07-10 | 1997-01-30 | Idemitsu Kosan Co., Ltd. | Refrigerator oil and method for lubricating therewith |
AU704899B2 (en) * | 1995-07-10 | 1999-05-06 | Idemitsu Kosan Co. Ltd | A refrigerator oil and process for lubrication using the refrigerator oil |
WO1997024415A1 (en) * | 1995-12-28 | 1997-07-10 | Daikin Industries, Ltd. | Refrigerating machine oil and refrigerator using same |
US6569347B1 (en) | 1995-12-28 | 2003-05-27 | Daikin Industries, Ltd. | Refrigerating machine oil and refrigerator using the same |
JP2000087069A (ja) * | 1998-09-08 | 2000-03-28 | Idemitsu Kosan Co Ltd | 潤滑油組成物 |
JP2008074933A (ja) * | 2006-09-20 | 2008-04-03 | Japan Energy Corp | 潤滑油組成物 |
JP2010116493A (ja) * | 2008-11-13 | 2010-05-27 | Nippon Oil Corp | 消泡性に優れた潤滑油組成物及び潤滑油の消泡方法 |
Also Published As
Publication number | Publication date |
---|---|
KR930010532B1 (ko) | 1993-10-25 |
JP2543919B2 (ja) | 1996-10-16 |
KR890010171A (ko) | 1989-08-07 |
US4946611A (en) | 1990-08-07 |
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