JP2911629B2 - 冷凍機油組成物 - Google Patents

冷凍機油組成物

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Publication number
JP2911629B2
JP2911629B2 JP3089070A JP8907091A JP2911629B2 JP 2911629 B2 JP2911629 B2 JP 2911629B2 JP 3089070 A JP3089070 A JP 3089070A JP 8907091 A JP8907091 A JP 8907091A JP 2911629 B2 JP2911629 B2 JP 2911629B2
Authority
JP
Japan
Prior art keywords
acid
carboxylic acid
oil composition
metal salt
glycol
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
Application number
JP3089070A
Other languages
English (en)
Other versions
JPH04300996A (ja
Inventor
啓通 清木
正人 金子
英夫 金森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Idemitsu Kosan Co Ltd
Original Assignee
Idemitsu Kosan Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Idemitsu Kosan Co Ltd filed Critical Idemitsu Kosan Co Ltd
Priority to JP3089070A priority Critical patent/JP2911629B2/ja
Priority to TW081101115A priority patent/TW217419B/zh
Priority to DE69232821T priority patent/DE69232821T2/de
Priority to EP92104856A priority patent/EP0507158B1/en
Priority to DE69221656T priority patent/DE69221656T2/de
Priority to EP96111075A priority patent/EP0739973B1/en
Priority to KR1019920004719A priority patent/KR970010867B1/ko
Priority to US07/859,100 priority patent/US5310492A/en
Publication of JPH04300996A publication Critical patent/JPH04300996A/ja
Application granted granted Critical
Publication of JP2911629B2 publication Critical patent/JP2911629B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
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    • C—CHEMISTRY; METALLURGY
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    • C—CHEMISTRY; METALLURGY
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    • C—CHEMISTRY; METALLURGY
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    • C10N2040/50—Medical uses

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、冷凍機油組成物に関
し、詳しくは環境汚染で問題となっている冷媒のジクロ
ロジフルオロメタン（以下フロン１２と称す）等のフロ
ン代替物となりうる１，１，１，２−テトラフルオロエ
タン（以下、フロン１３４ａと称す）等の水素含有フロ
ン化合物（フッ化アルカン）との相溶性が良好で、かつ
耐摩耗性，潤滑性能及びフロン雰囲気での安定性に優れ
た冷凍機油組成物に関するものである。
【０００２】
【従来の技術および発明が解決しようとする課題】近
年、環境汚染のおそれのないフロン１３４ａ等の水素含
有フロン冷媒を用いる冷凍機の潤滑油として、ポリオキ
シアルキレングリコール誘導体が、上記水素含有フロン
冷媒との相溶性が高い点で有効であることが報告されて
いる（米国特許第4,755,316 号明細書）。しかしなが
ら、これらのポリオキシアルキレングリコール誘導体
は、上記の冷媒雰囲気下では、耐摩耗性に劣り、特にカ
ーエアコンや電気冷蔵庫など冷凍機のアルミニウム材と
鋼材との間の摩耗を増大させ、実用上大きな問題となっ
ている。このアルミニウム材と鋼材の摩擦部分は、レシ
プロタイプの圧縮機（特に斜板式）では、ピストンとピ
ストンシュー，斜板とシュー部分など、ロータリータイ
プの圧縮機では、ベーンとハウジング部分などに使用さ
れており、潤滑上重要な要素である。一方、耐摩耗性向
上剤は種々のものが知られているが、フロン雰囲気とい
う特殊条件下でアルミニウム材と鋼材との摩耗を安定性
を害することなく防止できるという手段は知られていな
い。
【０００３】
【課題を解決するための手段】本発明者らは、フロン１
３４ａ等の水素含有フロン冷媒との相溶性にすぐれると
ともに、潤滑性能にすぐれ、しかも耐摩耗性、特にアル
ミニウム材と鋼材との間の耐摩耗性向上に有効な冷凍機
油（潤滑油）を開発すべく鋭意研究を重ねた。その結
果、特定の基油に特定のカルボン酸の金属塩を配合する
ことによって、上記目的を達成できることを見出した。
本発明はかかる知見に基いて完成したものである。
【０００４】すなわち本発明は、ポリオキシアルキレン
グリコール誘導体及び／又はポリエステル化合物からな
る基油に、炭素数３〜６０のカルボン酸の金属塩を配合
した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の基油は、一般に冷凍機
油として用いられるものであればよく、その種類や性状
については、特に限定されるものではないが、好ましく
は４０℃における動粘度が５〜１０００cSt であり、特
に好ましくは１０〜５００ｃＳｔの鉱油及び／又は合成
油である。また、この基油の低温流動性の指標である流
動点に関しては、特に制限はないが、−１０℃以下であ
ることが望ましい。
【０００５】このような鉱油及び合成油は、各種のもの
があり、用途等に応じて適宜選定すればよい。その好適
なものとして、例えば、鉱油としてはパラフィン系鉱
油，ナフテン系鉱油などが挙げられ、合成油としてはポ
リオキシアルキレン誘導体，エステル化合物（特にポリ
エステル化合物），アルキルベンゼン，アルキルナフタ
レン，ポリ−α−オレフィンなどが挙げられるが、特に
ポリオキシアルキレン誘導体やポリエステル化合物が好
ましい。ここで上記ポリオキシアルキレン誘導体には、
ポリオキシアルキレングリコール，そのモノアルキルエ
ーテル（分子片末端にアルキルエーテルが形成されたも
の），ジアルキルエーテル（分子両末端にアルキルエー
テルが形成されたもの）などがあり、またそのオキシア
ルキレン単位としては、オキシエチレン，オキシプロピ
レン，オキシブチレンあるいはこれら２種以上の混合物
（例えばオキシエチレンとオキシプロピレンとが共重合
したもの）などが挙げられる。一方、ポリエステル化合
物としては、各種のものがあり、用途等に応じて適宜選
定すればよい。その好適なものとしては、下記の（Ｉ）
〜（Ｖ）の反応生成物をあげることができる。 （Ｉ）多価カルボン酸あるいはその誘導体，多価ア
ルコールあるいはその誘導体および一価脂肪酸あるい
はその誘導体の反応生成物 （II）多価カルボン酸あるいはその誘導体，多価ア
ルコールあるいはその誘導体および一価脂肪族アルコ
ールあるいはその誘導体の反応生成物 （III)多価アルコールあるいはその誘導体および一
価脂肪酸あるいはその誘導体の反応生成物（好ましくは
当量反応生成物） （IV）一価脂肪族アルコールあるいはその誘導体およ
び多価カルボン酸あるいはその誘導体の反応生成物 （Ｖ）多価カルボン酸あるいはその誘導体および多
価アルコールあるいはその誘導体の反応生成物
【０００６】本発明は、上記基油にカルボン酸の金属塩
を配合することを特徴としている。ここで用いられるカ
ルボン酸の金属塩は、炭素数３〜６０のカルボン酸、好
ましくは炭素数６〜３０、より好ましくは１２〜３０の
脂肪酸の金属塩である。また前記脂肪酸のダイマー酸や
トリマー酸並びに炭素数３〜３０のジカルボン酸の金属
塩をあげることができる。これらのうち炭素数１２〜３
０の脂肪酸及び炭素数３〜３０のジカルボン酸の金属塩
が特に好ましい。一方、上記金属塩の金属については、
アルカリ金属あるいははアルカリ土類金属であるものが
好ましく、特にアルカリ金属塩が最適である。
【０００７】上記基油に配合されるカルボン酸の金属塩
を構成するカルボン酸としては、上述の如く各種のもの
があり、例えば、脂肪族飽和モノカルボン酸，脂肪族不
飽和カルボン酸，脂肪族ジカルボン酸，芳香族カルボン
酸などが挙げられる。さらに、具体例を挙げると、脂肪
族飽和モノカルボン酸としてはカプロン酸；カプリル
酸；カプリン酸；ラウリン酸；ミリスチン酸；パルミチ
ン酸；ステアリン酸；アラキン酸；セロチン酸；ラクセ
ル酸等の直鎖飽和酸、あるいはイソペンタン酸；２−メ
チルペンタン酸；２−メチルブタン酸；２，２−ジメチ
ルブタン酸；２−メチルヘキサン酸；５−メチルヘキサ
ン酸；２，２−ジメチルヘプタン酸；２−エチル−２−
メチルブタン酸；２−エチルヘキサン酸；ジメチルヘキ
サン酸；２−ｎ−プロピル−ペンタン酸；３，５，５ト
リメチルヘキサン酸；ジメチルオクタン酸；イソトリデ
カン酸；イソミリスチン酸；イソステアリン酸；イソア
ラキン酸；イソヘキサン酸等の分岐脂肪酸が挙げられ
る。また脂肪族不飽和カルボン酸としてはパルミトレイ
ン酸；オレイン酸；エライジン酸；リノール酸；リノレ
ン酸など、さらにはリシノール酸などの不飽和ヒドロキ
シ酸が挙げられる。また、脂肪族ジカルボン酸としては
アジピン酸，アゼライン酸，セバシン酸が挙げられ、芳
香族カルボン酸としては安息香酸，フタル酸，トリメリ
ット酸，ピロメリット酸などが挙げられる。また、ナフ
テン酸などの脂環式脂肪酸を用いることもできる。本発
明では、上記のカルボン酸を目的に応じて適宜二種以上
組み合わせて用いてもよい。
【０００８】上記カルボン酸と結合して金属塩を構成す
る金属も、特に限定されるものではなく各種のものが挙
げられる。例えば、リチウム，カリウム，ナトリウムな
どアルカリ金属、マグネシウム，カルシウム，ストロン
チウムなどアルカリ土類金属、他の金属として亜鉛，ニ
ッケル，アルミニウムなどを挙げることができる。本発
明では、上記カルボン酸一種あたりに化合される金属
は、一種に限らず二種以上であってもよく、目的に応じ
て適宜選定することができる。ここで、本発明に用いら
れる金属として好ましいものは、アルカリ金属及びアル
カリ土類金属であり、特にアルカリ金属が最適である。
本発明の冷凍機油組成物において、上記カルボン酸及び
金属からなるカルボン酸の金属塩の配合量は、目的に応
じて適宜選定可能であるが、好ましくは組成物全体に対
して0.００１〜１０重量％、特に好ましくは0.００５〜
３重量％である。ここで、上記配合量が0.００１重量％
未満の場合、耐摩耗性が充分でないという不都合があ
り、１０重量％を超えると安定性を低下させるという問
題がある。
【０００９】本発明の組成物を製造する方法は、上記基
油に上記カルボン酸の金属塩を配合すればよく、様々な
方法によることができる。しかし、基油に対してカルボ
ン酸の金属塩の溶解性を向上させるために、以下の方法
で組成物を製造することが有効である。但し、以下の製
造方法は、本発明の組成物を製造する多々ある方法の一
つである。まず、カルボン酸の金属塩を予め溶解させて
おくため、溶媒にカルボン酸及び水酸化アルカリとを投
入して、室温又は加温下で反応させて、カルボン酸の金
属塩を溶媒に溶解あるいは分散した状態で形成する。次
に上記溶媒に溶解，分散しているカルボン酸金属塩をそ
のまま、基油に配合し、混合分散する。このように、カ
ルボン酸の金属塩を予め溶媒に溶解あるいは分散させ、
しかる後に、基油に上記金属塩溶液あるいは分散液を配
合することにより、効率よく目的の組成物を製造するこ
とができる。
【００１０】ここで用いる溶媒は、種々のものがあり、
例えば、一価アルコール類としてはｎ−ブチルアルコー
ル；ｉｓｏ−ブチルアルコール；ｓｅｃ−ブチルアルコ
ール；ｔ−ブチルアルコール；ｎ−アミルアルコール；
ｉｓｏ−アミルアルコール；ｓｅｃ−アミルアルコー
ル；ｎ−ヘキシルアルコール；メチルアミルアルコー
ル；エチルブチルアルコール；ヘプチルアルコール；ｎ
−オクチルアルコール；ｓｅｃ−オクチルアルコール；
２−エチルヘキシルアルコール；ｉｓｏ−オクチルアル
コール；ｎ−ノニルアルコール；２，６−ジメチル−４
−ヘプタノール；ｎ−デシルアルコール；シクロヘキサ
ノールなど、グリコール類及び多価アルコール類として
はエチレングリコール；ジエチレングリコール；トリエ
チレングリコール；テトラエチレングリコール；プロピ
レングリコール；ジプロピレングリコール；１，４−ブ
チレングリコール；２，３−ブチレングリコール；ヘキ
シレングリコール；オクチレングリコール；グリセリン
など、セロソルブ類としてはエチレングリコールモノメ
チルエーテル；エチレングリコールエチルエーテル；エ
チレングリコールジエチルエーテル；エチレングリコー
ルブチルエーテル；エチレングリコールジブチルエーテ
ル；エチレングリコールフェニルエーテル；エチレング
リコールベンジルエーテル；エチレングリコールエチル
ヘキシルエーテル；ジエチレングリコールメチルエーテ
ル；ジエチレングリコールエチルエーテル；ジエチレン
グリコールジエチルエーテル；ジエチレングリコールブ
チルエーテル；ジエチレングリコールジブチルエーテ
ル；プロピレングリコールメチルエーテル；プロピレン
グリコールエチルエーテル；プロピレングリコールブチ
ルエーテル；ジプロピレングリコールメチルエーテル；
ジプロピレングリコールエチルエーテル；トリプロピレ
ングリコールメチルエーテル；テトラエチレングリコー
ルジメチルエーテル；テトラエチレングリコールジブチ
ルエーテルなどが挙げられる。さらに、クラウンエーテ
ル類としてはベンゾ−１５−クラウン−５，ベンゾ−１
２−クラウン−４，ベンゾ−１５−クラウン−５，ベン
ゾ−１８−クラウン−６，ジベンゾ−１８−クラウン−
６など、ケトン類としてはエチルブチルケトン，ジプロ
ピルケトン，メチルアミルケトン，メチルヘキシルケト
ン，ジイソブチルケトンなど、脂肪酸類としては前記炭
素数６〜３０の脂肪酸などが挙げられる。以上の如き溶
媒に溶解あるいは分散させる上記金属塩の濃度は、特に
限定されるものではなく各種状況に応じて適宜選定すれ
ばよい。
【００１１】本発明の組成物は、基油にカルボン酸の金
属塩を配合したものであるが、さらに必要に応じて従来
の潤滑油に使用されている各種添加剤、例えば耐荷重添
加剤（極圧剤，油性剤など），塩素捕捉剤，酸化防止
剤，金属不活性化剤，消泡剤，清浄分散剤，粘度指数向
上剤，流動点降下剤，防錆剤，腐食防止剤などを配合す
ることができる。
【００１２】上記耐荷重添加剤としては、モノスルフィ
ド類，ポリスルフィド類，スルホキシド類，スルホン
類，チオスルフィネート類，硫化油脂，チオカーボネー
ト類，チオフェン類，チアゾール類，メタンスルホン酸
エステル類などの有機硫黄化合物系のもの、リン酸モノ
エステル類，リン酸ジエステル類，リン酸トリエステル
類などのリン酸エステル系のもの、亜リン酸モノエステ
ル類，亜リン酸ジエステル類，亜リン酸トリエステル類
などの亜リン酸エステル系のもの、チオリン酸トリエス
テル類などのチオリン酸エステル系のもの、高級脂肪
酸，ヒドロキシアリール脂肪酸類，金属セッケンなどの
脂肪酸系のもの、アクリル酸エステル類などの脂肪酸エ
ステル系のもの、塩素化炭化水素類，塩素化カルボン酸
誘導体などの有機塩素系のもの、フッ素化脂肪族カルボ
ン酸類，フッ素化エチレン樹脂，フッ素化アルキルポリ
シロキサン類，フッ素化黒鉛などの有機フッ素系のも
の、高級アルコールなどのアルコール系のもの、ナフテ
ン酸塩類（ナフテン酸鉛），脂肪酸塩類（脂肪酸鉛），
チオリン酸塩類（ジアルキルジチオリン酸亜鉛），チオ
カルバミン酸塩類，有機モリブテン化合物，有機スズ化
合物，有機ゲルマニウム化合物，ホウ酸エステル類など
の金属化合物系のものがある。塩素捕捉剤としては、グ
リシジルエーテル基含有化合物，エポキシ化脂肪酸モノ
エステル類，エポキシ化油脂，エポキシシクロアルキル
基含有化合物などがある。酸化防止剤としては、フェノ
ール類（２，６−ジターシャリーブチル−ｐ−クレゾー
ル），芳香族アミン類（α−ナフチルアミン）などがあ
る。金属不活性化剤としては、ベンゾトリアゾール誘導
体などがある。消泡剤としては、シリコーンオイル（ジ
メチルポリシロキサン），ポリメタクリレート類などが
ある。清浄分散剤としては、スルホネート類，フェネー
ト類，コハク酸イミド類などがある。粘度指数向上剤，
流動点降下剤としては、ポリメタクリレート，ポリイソ
ブチレン，エチレン−プロピレン共重合体，スチレン−
ジエン水素化共重合体などがある。特に、上記添加剤の
うち、リン酸エステル系や亜リン酸エステル系のものが
好適であり、その添加量は、特に制限はなく適宜選定す
ればよいが、通常は全体の0.１〜５重量％程度である。
ここでリン酸エステル系の化合物は、アルキルホスフェ
ート化合物とアリールホスフェート化合物に大別するこ
とができる。このリン酸エステル系の化合物（ホスフェ
ート化合物）の好適なものとしては、一般式 （Ｒ
1 Ｏ)3Ｐ＝Ｏ（式中、Ｒ1 は総炭素数１５以上の炭化水
素基又は塩素化炭化水素基，特に炭素数８〜２０のアル
キル基（直鎖，分岐，飽和，不飽和），フェニル基，炭
素数１〜１２のアルキル基置換フェニル基，塩素化フェ
ニル基，塩素化アルキルフェニル基を示し、また各Ｒ1
は同じでも異なってもよい。）で表わされる化合物があ
げられる。具体的には、トリクレジルホスフェート（Ｔ
ＣＰ），トリフェニルホスフェート，トリ−イソプロピ
ルフェニルホスフェート，トリオクチルホスフェート，
トリラウリルホスフェート，トリステアリルホスフェー
ト，トリオレイルホスフェート，ジフェニルオクチルホ
スフェート，ｏ−，ｍ−，ｐ−モノクロロフェニルホス
フェート，ジクロロフェニルホスフェート，モノクロロ
トリルホスフェート，ジクロロトリルホスフェートなど
が挙げられるが、特にトリクレジルホスフェートを用い
ることが好ましい。また、亜リン酸エステル系の化合物
は、アルキルホスファイト化合物とアリールホスファイ
ト化合物に大別することができる。この亜リン酸エステ
ル系の化合物（ホスファイト化合物）の好適なものとし
ては、一般式 （Ｒ2 Ｏ)3Ｐ （式中、Ｒ2 は水素又は
総炭素数１５以上の炭化水素基、特に炭素数８〜２０の
アルキル基（直鎖，分岐，飽和，不飽和），フェニル
基，炭素数１〜１２のアルキル基置換フェニル基を示
し、また各Ｒ2 は同じでも異なってもよい。但し、Ｒ2
の２つ以上が水素である場合を除く。）で表わされる化
合物があげられる。具体的には、トリオクチルホスファ
イト，トリラウリルホスファイト，トリステアリルホス
ファイト，トリオレイルホスファイト，トリフェニルホ
スファイト，トリクレジルホスファイト，トリス（ノニ
ルフェニル）ホスファイト，ジフェニルデシルホスファ
イト，ジオクチルハイドロゲンホスファイト，ジラウリ
ルハイドロゲンホスファイト，ジオレイルハイドロゲン
ホスファイト，ジ（ノニルフェニル）ハイドロゲンホス
ファイトなどが挙げられる。
【００１３】
【実施例】次に、実施例により本発明をさらに詳細に説
明するが、本発明はこれらの例によって何ら限定される
ものではない。 実施例１〜１５及び比較例１〜３ カルボン酸の金属塩溶液の調製 (1) 溶媒としてジプロピレングリコール、カルボン酸と
してオレイン酸、水酸化アルカリとして水酸化カリウ
ム，水酸化ナトリウム又は水酸化リチウムを用いて、こ
れらの各水酸化アルカリと反応させて、それぞれオレイ
ン酸カリウム，オレイン酸ナトリウム，オレイン酸リチ
ウムの３０重量％溶液を調製した（実施例１〜４，７〜
１０，１２，１３，１４，１５）。 (2) 溶媒としてジプロピレングリコール、カルボン酸と
してパルミチン酸、水酸化アルカリとして水酸化カリウ
ムを用いて、パルミチン酸カリウムの３０重量％溶液を
調製した（実施例５，６）。 (3) 溶媒としてジプロピレングリコール、カルボン酸と
してセバシン酸、水酸化アルカリとして水酸化カリウム
を用いて、セバシン酸カリウムの３０重量％溶液を調製
した（実施例１１）。 (4) 溶媒としてエチレングリコール、カルボン酸として
オレイン酸、水酸化アルカリとして水酸化カリウム又は
水酸化ナトリウムを用いて、オレイン酸カリウム又はオ
レイン酸ナトリウムの３０重量％溶液を調製した（比較
例１，２）。 (5) 溶媒としてジエチルエーテル、カルボン酸としてオ
レイン酸、水酸化アルカリとして水酸化リチウムを用い
て、オレイン酸リチウムの３０重量％溶液を調製した
（比較例３）。 組成物の調製 上記溶液中に溶解，分散している金属塩をそのまま、第
１表に示す基油に配合し、混合分散した。ここで、配合
量は第１表に示す配合量（有効配合量）となるように調
整し、目的とする冷凍機油組成物を調製した。
【００１４】比較例４ オレイン酸カリウムを塩素化パラフィンに代え、また配
合量を変えたこと以外は実施例１と同様の操作を行っ
た。
【００１５】
【表１】
【００１６】
【表２】
【００１７】＊ １ 数平均分子量 １２７０ ＊ ２ 数平均分子量 ６４０ ＊ ３ 数平均分子量 １３００ ＊ ４ 数平均分子量 １１００ ＊ ５ １００℃の動粘度 4.６ｃＳｔ ＊ ６ ネオペンチルグリコール，アジピン酸及び２−
メチルカプロン酸のポリエステル （９
0.５ｃＳｔ（４０℃）） ＊ ７ ジペンタエリスリトールとｉｓｏ−バレイン酸
及びｎ−ヘキサン酸の混合脂肪酸のヘキサエステル（７
0.５ｃＳｔ（４０℃）） ＊ ８ ナフテン系鉱油 ( 5.０ｃＳｔ
（１００℃）） ＊ ９ トリクレシルホスフェート ＊１０ トリオクチルホスフェート
【００１８】上記実施例１〜１８及び比較例１で得られ
た冷凍機油組成物について、下記試験方法によりアルミ
ニウム材と鋼材間の耐摩耗性，安定性，外観及び高温臨
界溶解温度を測定した。得られた結果を第２表に示す。 （ａ）耐摩耗性 ファレックス耐摩耗性試験で、ブロックをアルミニウム
（Ａ４０３２），ピンを鋼（ＳＵＪ−２）として評価し
た。フロン吹き込み量を１０リットル／時間，荷重を４
００ポンド，時間を１時間、回転数を１２００ｒｐｍ，
油温を８０℃として摩耗量を測定した。 （ｂ）安定性 シールドチューブ試験により評価を行った。試料油と冷
媒（フロン１３４ａ）との２：１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、１７５℃に
おいて２４０時間加熱した後、油と触媒の外観を観察
し、スラッジの有無を調べた。 （ｃ）組成物の外観 組成物の配合を完了してから３０分後の外観を観察し、
くもり及び沈澱等の有無を確認した。 （ｄ）高温臨界溶解温度 内容積約１０mlのガラス製耐圧容器に、試料油と冷媒
（フロン１３４ａ）を１：９の比率（重量）で封入し、
均一に溶解した状態から徐々に温度を上昇させて行き、
試料油と冷媒が分離し始める温度を測定し、高温臨界溶
解温度とした。
【００１９】
【表３】
【００２０】
【発明の効果】本発明の冷凍機油組成物は、フロン１３
４ａ等の水素含有フロン冷媒雰囲気下での安定性，該冷
媒との相溶性および潤滑性能に優れるとともに、特にア
ルミニウム材と鋼材間の耐摩耗性向上に極めて有効に作
用する。更に水分の吸湿性も小さいという利点がある。
したがって、本発明の冷凍機油組成物は、圧縮型冷凍機
をはじめ、水素含有フロン冷媒を用いる各種の冷凍機の
潤滑油として利用される。特に、フロン１３４ａ等の水
素含有フロン化合物（水素含有フッ化アルカン）（具体
的には、上記フロン１３４ａ以外に、１，１，２，２−
テトラフルオロエタン（フロン−１３４）；１，１−ジ
クロロ−２，２，２−トリフルオロエタン（フロン−１
２３）；１−クロロ−１，１−ジフルオロエタン（フロ
ン−１４２ｂ）；１，１−ジフルオロエタン（フロン−
１５２ａ）；クロロジフルオロメタン（フロン−２２）
あるいはトリフルオロメタン（フロン−２３）など）と
の相溶性が良好である。したがって、本発明の冷凍機油
組成物は、各種の水素含有フロン化合物を冷媒として用
いる電気冷蔵庫，クーラー（特にカーエアコン），ヒー
トポンプ等の冷凍機の潤滑油として有効な利用が期待さ
れる。
フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ // Ｃ１０Ｎ 30:06 30:08 40:30 (58)調査した分野(Int.Cl.6，ＤＢ名) C10M 129/26 C10N 40:30

Claims (6)

    (57)【特許請求の範囲】
  1. 【請求項１】 ポリオキシアルキレングリコール誘導体
    及び／又はポリエステル化合物からなる基油に、炭素数
    ３〜６０のカルボン酸の金属塩を配合したことを特徴と
    する冷凍機油組成物。
  2. 【請求項２】 金属塩の金属が、アルカリ金属である請
    求項１記載の冷凍機油組成物。
  3. 【請求項３】 カルボン酸が、炭素数６〜３０の脂肪酸
    である請求項１又は２記載の冷凍機油組成物。
  4. 【請求項４】 カルボン酸が、炭素数３〜３０のジカル
    ボン酸である請求項１又は２記載の冷凍機油組成物。
  5. 【請求項５】 冷凍機における冷媒が、水素含有フロン
    冷媒である請求項１記載の冷凍機油組成物。
  6. 【請求項６】 水素含有フロン冷媒が、１，１，１，２
    −テトラフルオロエタンである請求項５記載の冷凍機油
    組成物。
JP3089070A 1991-03-29 1991-03-29 冷凍機油組成物 Expired - Lifetime JP2911629B2 (ja)

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JP3089070A JP2911629B2 (ja) 1991-03-29 1991-03-29 冷凍機油組成物
TW081101115A TW217419B (ja) 1991-03-29 1992-02-17
EP92104856A EP0507158B1 (en) 1991-03-29 1992-03-20 Refrigerating machine oil composition
DE69221656T DE69221656T2 (de) 1991-03-29 1992-03-20 Ölzusammensetzung für Kältemaschinen
DE69232821T DE69232821T2 (de) 1991-03-29 1992-03-20 Ölzusammensetzung für Kältemaschinen
EP96111075A EP0739973B1 (en) 1991-03-29 1992-03-20 Refrigerating machine oil composition
KR1019920004719A KR970010867B1 (ko) 1991-03-29 1992-03-23 냉동기유 조성물
US07/859,100 US5310492A (en) 1991-03-29 1992-03-27 Refrigerating machine oil composition

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DE3929071A1 (de) * 1989-09-01 1991-03-07 Henkel Kgaa Universalschmiermittel auf der basis einer syntheseoelloesung
JPH03285992A (ja) * 1990-03-31 1991-12-17 Idemitsu Kosan Co Ltd 水素含有フロン冷媒用冷凍機油組成物

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DE69221656D1 (de) 1997-09-25
JPH04300996A (ja) 1992-10-23
US5310492A (en) 1994-05-10
EP0507158A1 (en) 1992-10-07
KR920018203A (ko) 1992-10-21
KR970010867B1 (ko) 1997-07-01
DE69232821D1 (de) 2002-11-21
DE69232821T2 (de) 2003-03-13
DE69221656T2 (de) 1997-12-11
EP0739973B1 (en) 2002-10-16
EP0739973A1 (en) 1996-10-30
TW217419B (ja) 1993-12-11
EP0507158B1 (en) 1997-08-20

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