JPH0459894A - 潤滑油組成物 - Google Patents

潤滑油組成物

Info

Publication number
JPH0459894A
JPH0459894A JP2169867A JP16986790A JPH0459894A JP H0459894 A JPH0459894 A JP H0459894A JP 2169867 A JP2169867 A JP 2169867A JP 16986790 A JP16986790 A JP 16986790A JP H0459894 A JPH0459894 A JP H0459894A
Authority
JP
Japan
Prior art keywords
fatty acid
composition
carbon atoms
lubricating oil
formula
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
Application number
JP2169867A
Other languages
English (en)
Inventor
Hiroyuki Takashima
高島 宏之
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.)
Eneos Corp
Original Assignee
Nippon Oil Corp
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 Nippon Oil Corp filed Critical Nippon Oil Corp
Priority to JP2169867A priority Critical patent/JPH0459894A/ja
Priority to US07/717,269 priority patent/US5145593A/en
Priority to DE69103976T priority patent/DE69103976T2/de
Priority to EP91110158A priority patent/EP0464491B1/en
Publication of JPH0459894A publication Critical patent/JPH0459894A/ja
Pending legal-status Critical Current

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    • C10M169/00Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04Mixtures of base-materials and additives
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    • C10M101/04Fatty oil fractions
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    • C10M105/08Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
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    • C10M129/02Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
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    • C10M129/02Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/26Carboxylic acids; Salts thereof
    • C10M129/28Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M129/38Carboxylic acids; Salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms
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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。

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は潤滑油組成物に関し、詳しくは圧縮機等の機器
に用いられる潤滑油組成物に関するものである。
[従来の技術および発明が解決しようとすゝる課題1食
品関連業界、医療機器、医薬品製造、および医療等の人
体に影響を及ぼすと思われる部分で使用される圧縮空気
は、通常の場合、油冷式の圧縮機とミストフィルターを
組み合わせた使われ方か多い。オイルフリータイプの圧
縮機は現在最も小型のもので15kWであり、装置コス
トは油冷式の約2倍以上であるため、中小の製造所ある
いは医療機関で使われるケースは極めて少ない。
人体に接触し、影響を及ぼすと思われる部分での圧縮空
気の使用例としては、アイスクリーム等の食品の撹拌用
、玉葱等の野菜の皮むき用(皮を瞬間的に吹き飛ばす)
、味噌等の食品の発酵の際のかき混ぜ用、清涼飲料水や
酒瓶の充填時の口回りにこぼれた汚れの吹き飛ばし用、
瓶の洗浄用、砂糖等の粉体輸送用、歯科医のハンドエア
ドリルのエア源および口腔内洗浄用等があるが、油冷式
装置とミストフィルタとを組み合わせた場合、圧縮空気
中の長時間にわたってのオイルミストの完全な除去は極
めて難しく、通常でも数ppm〜数十ppmの油が系外
に出る可能性を持っている。
また、CO2ガスを圧縮してドライアイスを製造する場
合、一般に中大型規模の工場ではスクリュー型の圧縮機
が用いられている。その際に用いられる潤滑油はこのガ
スと直接接触しながら装置の潤滑が行われるため、ドラ
イアイスの用途上、人体に対する安全性・を考慮した潤
滑油が用いられる。また、微量の空気の混入もあるため
、酸化防止能力も要求される。
このため、上記のような用途に使用される圧縮機用潤滑
油としては、従来から安全性の高い動植物油、流動パラ
フィン等が用いられている。しかしながら、動植物油お
よび流動パラフィン等は錆止め性、酸化安定性に問題が
ある。
従って、現状では、このような装置に対する安全性の高
い油で、かつ酸化安定性、錆止め性および潤滑性に優れ
る油がなく、課題となる点を多々残したまま今日に至っ
ていた。
本発明者は、上記の課題に鑑み、人体に対して安全であ
り、かつ、潤滑性、錆止め性、酸化安定性に優れた潤滑
油を開発すべく鋭意研究した結果、特定構造を有するグ
リセリドを基油とし、これに特定の化合物を含有せしめ
た潤滑油が上記の条件を満足することを見いだし、本発
明を完成するに至った。
本発明は、人体に対して安全であり、かつ、潤滑性、錆
止め性、酸化安定性に優れた潤滑油組成物を提供するこ
とを目的とする。
[課題を解決するための手段] すなわち、本発明は、(1)一般式 %式% [式中、Rr 、R2およびR9は同一でも異なってい
てもよく、それぞれ炭素数5〜21の直鎖アルキル基を
示す] で表される飽和脂肪酸グリセリドを基油とし、これに必
須成分として、 (n)炭素数12〜22の脂肪酸を組成物全量基準で0
.001〜5.0重量%含有させたことを特徴とする潤
滑油組成物(但し、食品加工機械油としての用途を除く
)を提供するものである。
以下、本発明の内容をより詳細に説明する。
本発明に用いられる(1)飽和脂肪酸グリセリドとは、
一般式 %式% びR3は同一でも異なっていてもよく、それぞれ炭素数
5〜21.好ましくは5〜11の直鎖アルキル基を示し
ている。炭素数が上記の数値を満たさない直鎖アルキル
基、分枝アルキル基、あるいは不飽和基を使用すると、
潤滑油としての粘度、流動点、あるいは酸化安定性等の
面で好ましくない。
本発明で用いられる(I)飽和脂肪酸グリセリドにおい
て、R1、R2およびR5で表される直鎖アルキル基と
しては、具体的には、ペンチル基、ヘキシル基、ヘプチ
ル基、オクチル基、ノニル基、デシル基、ウンデシル基
、ドデシル基、トリデシル基、テトラデシル基、ペンタ
デシル基、ヘキサデシル基、ヘプタデシル基、オクタデ
シル基、ノナデシル基、エイコシル基、ヘネイコシル基
が挙げられる。
この(I)飽和脂肪酸グリセリドの製造方法は任意であ
るが、例えば、天然油脂を加水分解し、脂肪酸とグリセ
リンを分離し、さらに脂肪酸中の飽和脂肪酸中のみを抽
出し、この抽出された飽和脂肪酸とグリセリンを反応さ
せることにより得られる。
また、本発明に係る(1−)飽和脂肪酸グリセリドは食
品添加物に指定されていることから明らかな通り、人体
に対し極めて無毒性の物質である。
本発明に用いられる(n)成分は炭素数12〜22の脂
肪酸、好ましくは炭素数’12〜20の飽和脂肪酸であ
る。(n)成分の代わりに、炭素数が上記の数値を満た
さない脂肪酸を使用すると、酸化安定性、潤滑性等の性
能が劣るため好ましくない。
本発明における(II)炭素数12〜22の脂肪酸とし
ては、天然に存在する脂肪酸を使用してもよいし、合成
で得られたものを使用してもよい。また、直鎖のもので
も分枝のものでもよい。具体的には、例えばラウリン酸
、トリデシル酸、ミリスチン酸、ペンタデシル酸、バル
ミチン酸、ヘプタデシル酸、ステアリン酸、ノナデカン
酸、アラキン酸、ベヘン酸、オレイン酸、エライジン酸
、セトレイン酸、エルカ酸、ブラシジン酸、リノール酸
、リルン酸、アラキドン酸、ステアロール酸、またはこ
れらの混合物等が挙げられる。これらの脂肪酸のうち、
炭素数14.16.18または20の飽和脂肪酸、ある
いはこれらの2種以上の混合物が好ましく用いられる。
これらの脂肪酸は着香料として食品添加物に指定されて
おり、さらに化粧品原料基準品目にも選ばれていること
から明らかな通り、人体に対して極めて無毒性の物質で
ある。
この炭素数12〜22の飽和脂肪酸の含有量は、組成物
全量基準で0.001〜5.0重量%、好ましくは0.
01〜1.0重量%である。含有量が上記範囲に達しな
い場合には、酸化安定性、錆止め性、および潤滑性が満
足できず、含有量が上記範囲を超える場合には、含有量
に見合った効果が得られない。
本発明においては、(■)飽和脂肪酸グリセリドを基油
とし、これに(II)炭素数12〜22の脂肪酸を必須
成分として特定量含有させることにより、各種性能に優
れた潤滑油組成、物が得られるが、その潤滑油としての
性能をさらに高めるため、ジブチルヒドロキシトルエン
および/またはトコフェロール類(ビタミンE)を含有
させてもよい。このジブチルヒドロキシトルエンおよび
/またはトコフェロール類としては、具体的には、例え
ば2.6−ジターシャリ−ブチル−4−ヒドロキシトル
エン、α−トコフェロール、β−トコフェロール、γ−
トコフェロール、δ−トコフェロールまたはこれらの混
合物等が挙げられる。
これらの物質は酸化防止剤として食品添加物に指定され
ており、人体に対して極めて無毒性の物質である。
本発明において、ジブチルヒドロキシトルエンおよび/
またはトコフェロール類を含有せしめる場合、その含有
量は組成物全量基準で0.01〜5.0重量%、好まし
くは0.01〜1.0重量%である。
本発明の潤滑油組成物に対して、さらにその優れた性能
を高めるため、必要に応じて他の添加剤を配合すること
ができる。しかしながら、他の添加剤を配合する場合に
は、人体に対して無毒性のものを用いる必要があり、具
体的には、例えば油性剤としてオレイルアルコール等の
高級脂肪族アルコール、動植物油脂またはこれらの部分
水素添加物、メチルラウレート、ブチルステアレート等
の高級脂肪酸エステル、酸化防止剤としてターシャリ−
ブチルヒドロキシアニソール、錆止め剤としてソルビタ
ンモノオレエート等のソルビタン脂肪酸エステル、ショ
糖モノラウレート等のシジ糖脂肪酸エステル等が挙げら
れる。
これら添加剤は単独で添加してもよく、また数種併用し
て添加してもよい。添加量も任意であるが、通常、個々
の添、論量は組成物全量基準で20.0重量%以下、好
ましくは0.1〜1O90重量%である。
本発明の潤滑油は、圧縮機用として特に好ましく用いら
れるが、その他、切削、研削、圧延等の金属加工、滑り
案内面、油圧作動機械、チェーン、軸受、チェンソー等
の潤滑油が人体に接触しやすい部分の潤滑に好ましく用
いられる。
[実施例コ 以下、本発明の内容を、実施例および比較例によりさら
に具体的に説明するが、本発明は、これらに何等限定さ
れるものではない。
実施例1〜5および比較例1〜2 第1表に記載の組成により、本発明に係る圧縮機用潤滑
油組成物を得た(実施例1〜5)。その性能(耐摩耗性
、錆止め性、酸化安定性、実機推定寿命)を以下に示す
方法により評価し、その結果も第1表に示した。さらに
比較のため、(1)成分のみのもの(比較例1)および
流動パラフィンを用いたもの(比較例2)についても同
様に評価を行い、その結果も第1表に示した。
く耐摩耗性〉 ASTM  D 4172 +11m規定すtLルrW
EARPREVENTIVE CHARACTERIS
TIC8OF LUBURICATINに FLUID
(FO,UR−BALL METHOD) J +、:
従い、1.20Orpm、15Kfl、30mjnの条
件でその摩耗こん径(#)を測定した。
く錆止め性〉 JIS・ K 2510に規定される「潤滑油錆止め性
能試験方法(蒸留水を用いる試験方法)」に従い、鯖止
め性能を評価した。
く酸化安定性〉 J I S  K 2514 3.8に規定される「回
転ボンベ式酸化安定度試験方法」に従い、120’Cで
酸化寿命(win )を測定した。
く実機推定寿命〉 神戸製鋼製スクリューコンプレーサ(モータ出力8kW
)を用い、タンク圧カフ8FJf/cm、平均タンク油
温80℃の連続運転による実験で評価した。
[発明の効果コ 第1表に示す結果からも明らかな通り、本発明の潤滑油
組成物は、従来の潤滑油に比べて優れた潤滑性、錆止め
性、酸化安定性゛を有している。しかも、人体に対して
極めて安全である。

Claims (4)

    【特許請求の範囲】
  1. (1)( I )一般式 ▲数式、化学式、表等があります▼ [式中、R_1、R_2およびR_3は同一でも異なっ
    ていてもよく、それぞれ炭素数5〜21の直鎖アルキル
    基を示す] で表される飽和脂肪酸グリセリドを基油とし、これに必
    須成分として、 (II)炭素数12〜22の脂肪酸を組成物全量基準で0
    .001〜5.0重量%含有させたことを特徴とする潤
    滑油組成物(但し、食品加工機械油としての用途を除く
    )。
  2. (2)( I )一般式 ▲数式、化学式、表等があります▼ [式中、R_1、R_2およびR_3は同一でも異なっ
    ていてもよく、それぞれ炭素数5〜21の直鎖アルキル
    基を示す] で表される飽和脂肪酸グリセリドを基油とし、これに必
    須成分として、 (II)炭素数12〜22の脂肪酸を組成物全量基準で0
    .001〜5.0重量%含有させたことを特徴とする圧
    縮機用潤滑油組成物。
  3. (3)請求項1または2に記載の組成物に、さらに、ジ
    ブチルヒドロキシトルエンおよび/またはトコフェロー
    ル類を組成物全量基準で0.01〜5.0重量%含有さ
    せたことを特徴とする潤滑油組成物。
  4. (4)前記脂肪酸が炭素数14、16、18または20
    の飽和脂肪酸、あるいはこれらの2種以上の混合物であ
    る請求項1、2または3に記載の潤滑油組成物。
JP2169867A 1990-06-29 1990-06-29 潤滑油組成物 Pending JPH0459894A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2169867A JPH0459894A (ja) 1990-06-29 1990-06-29 潤滑油組成物
US07/717,269 US5145593A (en) 1990-06-29 1991-06-18 Lubricating oil compositions containing a glyceride from a saturated fatty acid and a fatty acid
DE69103976T DE69103976T2 (de) 1990-06-29 1991-06-20 Verwendung von einem Schmierölzusammensetzung in Kompressoren.
EP91110158A EP0464491B1 (en) 1990-06-29 1991-06-20 Use of a lubricating oil composition in compressors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2169867A JPH0459894A (ja) 1990-06-29 1990-06-29 潤滑油組成物

Publications (1)

Publication Number Publication Date
JPH0459894A true JPH0459894A (ja) 1992-02-26

Family

ID=15894420

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2169867A Pending JPH0459894A (ja) 1990-06-29 1990-06-29 潤滑油組成物

Country Status (4)

Country Link
US (1) US5145593A (ja)
EP (1) EP0464491B1 (ja)
JP (1) JPH0459894A (ja)
DE (1) DE69103976T2 (ja)

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JP2006052415A (ja) * 1999-10-25 2006-02-23 Nippon Oil Corp 極微量油剤供給式切削・研削加工用油剤組成物
JP2006083397A (ja) * 1999-10-25 2006-03-30 Nippon Oil Corp 極微量油剤供給式切削・研削加工用油剤組成物
JP2006282778A (ja) * 2005-03-31 2006-10-19 Nippon Oil Corp 圧縮機用潤滑油組成物
JP2008127426A (ja) * 2006-11-17 2008-06-05 Japan Energy Corp 油圧作動油及びそれを用いた油圧システム
JP2010241858A (ja) * 2009-04-01 2010-10-28 Nsk Ltd 潤滑剤組成物及び転動装置

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WO2021154004A1 (ko) * 2020-01-31 2021-08-05 주식회사 한국발보린 합성식물유 및 이를 포함하는 환경친화형-난연성 유압 작동유 조성물 및 그 제조방법
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JP2006282778A (ja) * 2005-03-31 2006-10-19 Nippon Oil Corp 圧縮機用潤滑油組成物
JP2008127426A (ja) * 2006-11-17 2008-06-05 Japan Energy Corp 油圧作動油及びそれを用いた油圧システム
JP2010241858A (ja) * 2009-04-01 2010-10-28 Nsk Ltd 潤滑剤組成物及び転動装置

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Publication number Publication date
DE69103976D1 (de) 1994-10-20
EP0464491A1 (en) 1992-01-08
US5145593A (en) 1992-09-08
EP0464491B1 (en) 1994-09-14
DE69103976T2 (de) 1995-03-02

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