JP4004021B2 - Oil-based lubricant composition for plastic working of metal materials - Google Patents
Oil-based lubricant composition for plastic working of metal materials Download PDFInfo
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- JP4004021B2 JP4004021B2 JP2001355497A JP2001355497A JP4004021B2 JP 4004021 B2 JP4004021 B2 JP 4004021B2 JP 2001355497 A JP2001355497 A JP 2001355497A JP 2001355497 A JP2001355497 A JP 2001355497A JP 4004021 B2 JP4004021 B2 JP 4004021B2
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Description
【０００１】
【発明の属する技術分野】
本発明は金属材料の塑性加工用油性潤滑剤組成物（以下、単に油性潤滑剤組成物という）に関し、更に詳しくは金属材料を圧延、押出し、引抜き、鍛造、プレス等の塑性加工に供するときに用いる油性潤滑剤組成物に関する。
【０００２】
【従来の技術】
従来、油性潤滑剤組成物として一般に、ベース油としてナフテン系やパラフィン系の鉱油、或はかかる鉱油に菜種油、大豆油、パーム油、牛脂、豚脂、鯨油等の動植物油を加えた混合油を用い、必要に応じて、かかるベース油に脂肪酸、脂肪酸エステル、高級アルコール等の油性向上剤、含硫黄有機化合物、含塩素有機化合物、含リン有機化合物等の極圧添加剤、更にはステアリン酸亜鉛、ステアリン酸カルシウム、二硫化モリブデン等の固形潤滑剤を配合したものが使用されている。ところが、これら従来の油性潤滑剤組成物には、金属材料の塑性加工における潤滑性に劣り、またベース油として生分解性の低い鉱油を用いるため、環境汚染の原因になり易いという問題がある。
【０００３】
【発明が解決しようとする課題】
本発明が解決しようとする課題は、金属材料の塑性加工における潤滑性に優れ、また環境汚染を惹起しない油性潤滑剤組成物を提供する処にある。
【０００４】
【課題を解決するための手段】
しかして本発明者らは、上記の課題を解決するべく研究した結果、ベース油としてゴマ油を用い、これと非イオン性界面活性剤及び含硫黄有機化合物を所定割合で含有するものが正しく好適であることを見出した。
【０００５】
すなわち本発明は、ゴマ油、非イオン性界面活性剤及び含硫黄有機化合物から成り、且つ該ゴマ油を５０〜９０重量％、該非イオン性界面活性剤を５〜２０重量％及び該含硫黄有機化合物を５〜４５重量％含有して成ることを特徴とする油性潤滑剤組成物に係る。
【０００６】
本発明に係る油性潤滑剤組成物は、ベース油としてゴマ油を用いたものであり、したがって鉱油を含有しない。かかるゴマ油それ自体としては公知のものを適用できる。これには例えば、１）生ゴマ種子を間接熱風焙煎したゴマ種子から圧搾搾油して得られるゴマ油、２）生ゴマ種子を遠赤焙煎したゴマ種子から圧搾搾油して得られるゴマ油、３）前記１）又は２）の焙煎したゴマ種子から有機溶剤で抽出処理して得られるゴマ油、４）生ゴマ種子から圧搾搾油して得られるゴマ油、５）生ゴマ種子から有機溶剤で抽出処理して得られるゴマ油等が挙げられるが、なかでも前記１）〜３）の焙煎したゴマ種子から得られるゴマ油が好ましい。
【０００７】
本発明に係る油性潤滑剤組成物は、ベース油として以上説明したようなゴマ油を用いたもので、具体的にはゴマ油を５０〜９０重量％含有するものとするが、５０〜８０重量％含有するものとするのが好ましい。
【０００８】
本発明に係る油性潤滑剤組成物は、ゴマ油に加えて、更に非イオン性界面活性剤を含有するものである。かかる非イオン性界面活性剤としては、多価アルコール脂肪酸エステルのポリオキシアルキレン付加物、多価アルコール部分脂肪酸エステルのポリオキシアルキレン付加物、脂肪酸エステルのポリオキシアルキレン付加物、脂肪族アルコールのポリオキシアルキレン付加物、脂肪族アミンのポリオキシアルキレン付加物、アルキル置換フェノールのポリオキシアルキレン付加物等が挙げられるが、なかでも多価アルコール脂肪酸エステルのポリオキシアルキレン付加物が好ましい。以上説明した非イオン性界面活性剤の含有量は、油性潤滑剤組成物中、５〜２０重量％とするが、５〜１０重量％とするのが好ましい。
【０００９】
本発明に係る油性潤滑剤組成物は、ゴマ油及び非イオン性界面活性剤に加えて、更に含硫黄有機化合物を含有するものである。かかる含硫黄有機化合物としては、１）硫化抹香油、硫化ラード油、硫化大豆油等の硫化油脂、２）ジｎ−ヘキシルジサルファイド、ジｔ−オクチルトリサルファイド、ジベンジルテトラサルファイド等のポリサルファイド、３）ブチル−ラウリルチオ酢酸エステル、２−エチルヘキシル−ラウリルチオプロピオン酸エステル、オレイル−フェニルメルカプト酢酸エステル等の、脂肪族１価アルコールと含硫黄脂肪族モノカルボン酸とのエステル類、４）ジイソオクチル−チオジコハク酸エステル、ジラウリル−チオジプロピオン酸エステル、ジステアリル−メチレンビスチオプロピオン酸エステル等の、脂肪族１価アルコールと含硫黄脂肪族ジカルボン酸とのエステル類、５）ネオペンチルグリコール−ラウリルチオ酢酸ジエステル、１，６−ヘキサンジオール−ラウリルチオプロピオン酸ジエステル、トリメチロールプロパン−フェニルメルカプト酢酸トリエステル等の、多価アルコールと含硫黄脂肪族モノカルボン酸とのエステル類、６）ラウリルチオ酢酸＝トリエチルアミン、ラウリルチオプロピオン酸＝ジエタノールアミン、フェニルメルカプト酢酸＝α−ラウリルアミノ−ω−ヒドロキシ−ポリオキシエチレン（オキシエチレン単位の数６、以下ｎ＝６という）等の含硫黄脂肪族モノカルボン酸アミン塩、７）チオジコハク酸＝オクチルアミン、チオジプロピオン酸＝オクチルジエタノールアミン、メチレンビスチオプロピオン酸＝α−ステアリルアミノ−ω−ヒドロキシ−ポリオキシプロピレン（オキシプロピレン単位の数６、以下ｍ＝６という）等の含硫黄脂肪族ジカルボン酸アミン塩、８）石油スルホン酸カルシウム、ジラウリルセチルスルホン酸マグネシウム、ナフタレンスルホン酸ナトリウム、パラフィンワックス置換ベンゼンスルホン酸カリウム、石油スルホン酸バリウム等の有機スルホン酸塩等が挙げられるが、なかでもポリサルファイド、脂肪族１価アルコールと含硫黄脂肪族モノカルボン酸とのエステル、有機スルホン酸塩が好ましい。以上説明した含硫黄有機化合物の含有割合は、油性潤滑剤組成物中、５〜４５重量％とするが、１０〜４０重量％とするのが好ましい。
【００１０】
以上、本発明に係る油性潤滑剤組成物について説明したが、本発明に係る油性潤滑剤組成物としては、前記したように、ゴマ油を５０〜８０重量％、非イオン性界面活性剤を５〜１０重量％及び含硫黄有機化合物を１０〜４０重量％（合計１００重量％）の割合で含有するものが好ましい。
【００１１】
本発明に係る油性潤滑剤組成物は、本発明の効果を損なわない範囲内で、合目的的に抗酸化剤、防腐剤、防黴剤、防錆剤、防食剤、消泡剤、キレート剤等と併用することもできる。
【００１２】
【発明の実施の形態】
本発明に係る油性潤滑剤組成物の実施形態としては、次の１）〜５）が挙げられる。
１）生ゴマ種子を間接熱風焙煎したゴマ種子から圧搾搾油して得たゴマ油を７０重量％、ポリオキシエチレン（ｎ＝２０）硬化ひまし油エーテルのオレイン酸トリエステルを１０重量％及びジベンジルテトラサルファイドを２０重量％の割合で含有して成る油性潤滑剤組成物。
【００１３】
２）生ゴマ種子を遠赤焙煎したゴマ種子から圧搾搾油して得たゴマ油を６０重量％、ポリオキシエチレン（ｎ＝２０）硬化ひまし油エーテルのオレイン酸トリエステルを１０重量％及び２−エチルヘキシル−ラウリルチオプロピオン酸エステルを３０重量％の割合で含有して成る油性潤滑剤組成物。
【００１４】
３）生ゴマ種子を間接熱風焙煎したゴマ種子から圧搾搾油して得たゴマ油を７０重量％、ポリオキシエチレン（ｎ＝２０）硬化ひまし油エーテルのオレイン酸トリエステルを１０重量％及び石油スルホン酸カルシウムを２０重量％の割合で含有して成る油性潤滑剤組成物。
【００１５】
４）生ゴマ種子を遠赤焙煎したゴマ種子からｎ−ヘキサンで抽出処理して得たゴマ油を７０重量％、ポリオキシエチレン（ｎ＝２０）硬化ひまし油エーテルのオレイン酸トリエステルを１０重量％及びジベンジルテトラサルファイドを２０重量％の割合で含有して成る油性潤滑剤組成物。
【００１６】
５）生ゴマ種子を間接熱風焙煎したゴマ種子からｎ−ヘキサンで抽出処理して得たゴマ油を６０重量％、ポリオキシエチレン（ｎ＝２０）硬化ひまし油エーテルのオレイン酸トリエステルを１０重量％及び２−エチルヘキシル−ラウリルチオプロピオン酸エステルを３０重量％の割合で含有して成る油性潤滑剤組成物。
【００１７】
以下、本発明の構成及び効果をより具体的にするため、実施例等を挙げるが、本発明が該実施例に限定されるというものではない。尚、以下の実施例等において、別に記載しない限り、部は重量部、％は重量％である。
【００１８】
【実施例】
試験区分１（油性潤滑剤組成物の調製）
実施例１〜１２
表１記載のゴマ油、非イオン性界面活性剤及び含硫黄有機化合物を表１記載の割合となるよう混合したものを油性潤滑剤組成物とした。
【００１９】
比較例１〜４及び７
表２記載のベース油を油性潤滑剤組成物とした。
【００２０】
比較例５及び６
表２記載のベース油及び含硫黄有機化合物を表２記載の割合となるよう混合したものを油性潤滑剤組成物とした。
【００２１】
試験区分２（油性潤滑剤組成物の評価）
・摩擦係数の測定
試験区分１で調製した各例の油性潤滑剤組成物の塑性加工性を評価する指標として、下記の摩擦係数測定法により、各例の油性潤滑剤組成物の摩擦係数を測定し、下記の基準で評価した。結果を表１及び２にまとめて示した。
摩擦係数測定法：各例の油性潤滑剤組成物を曽田式振子型油性摩擦試験機（神鋼造機社製）に供し、接触面最大応力１１１kg／mm２、測定温度８０℃での摩擦係数を測定した。
評価基準
◎：摩擦係数が０．１００未満
◎〜○：摩擦係数が０．１００以上０．１１５未満
○：摩擦係数が０．１１５以上０．１５０未満
△：摩擦係数が０．１５０以上０．２００未満
×：摩擦係数が０．２００以上
【００２２】
・生分解性の評価
試験区分１で調製した各例の油性潤滑剤組成物を環境へ排出した場合の環境汚染性を評価する指標として、下記の生分解性評価法により、各例の油性潤滑剤組成物の生分解性を測定し、下記の基準で評価した。結果を表１及び２にまとめて示した。
生分解性評価法：ＥＭＰＡのＯＥＣＤ３０２Ｂ法により１週間後の生分解率を測定した。
評価基準
○：生分解率が７０％以上
×：生分解率が７０％未満
【００２３】
【表１】
【表２】
表１及び表２において、
割合：％
Ｍ−１：生ゴマ種子から圧搾搾油して得たゴマ油。ここでは、中国産生ゴマ種子から圧搾搾油した粗油を、脱酸処理→脱色処理→脱臭処理の手順で精製したゴマ油をＭ−１とした。
Ｍ−２：生ゴマ種子を間接熱風焙煎したゴマ種子から圧搾搾油して得たゴマ油。ここでは、中国産生ゴマ種子を雰囲気温度２５０℃のロータリーキルンで間接熱風焙煎したゴマ種子から圧搾搾油して得たゴマ油をＭ−２とした。
Ｍ−３：生ゴマ種子を遠赤焙煎したゴマ種子から圧搾搾油して得たゴマ油。ここでは、中国産生ゴマ種子を雰囲気温度２５０℃の遠赤外線加熱炉で遠赤焙煎したゴマ種子から圧搾搾油して得たゴマ油をＭ−３とした。
Ｍ−５：生ゴマ種子を間接熱風焙煎したゴマ種子から有機溶剤で抽出処理して得たゴマ油。ここでは、中国産生ゴマ種子を雰囲気温度２５０℃のロータリーキルンで間接熱風焙煎したゴマ種子からｎ−ヘキサンで抽出処理して得たゴマ油をＭ−５とした。
Ｍ−６：生ゴマ種子を遠赤焙煎したゴマ種子から有機溶剤で抽出処理して得たゴマ油。ここでは、中国産生ゴマ種子を雰囲気温度２５０℃の遠赤外線加熱炉で遠赤焙煎したゴマ種子からｎ−ヘキサンで抽出処理して得たゴマ油をＭ−６とした。
【００２６】
Ｎ−１：ポリオキシエチレン（ｎ＝２５）硬化ひまし油エーテルのオレイン酸トリエステル
【００２７】
Ｓ−１：硫化ラード油
Ｓ−２：ジベンジルテトラサルファイド
Ｓ−３：２−エチルヘキシル−ラウリルチオプロピオン酸エステル
Ｓ−４：ジラウリル−チオジプロピオン酸エステル
Ｓ−５：１，６−ヘキサンジオール−ラウリルチオプロピオン酸ジエステル
Ｓ−６：ラウリルチオプロピオン酸＝ジエタノールアミン
Ｓ−７：チオプロピオン酸＝オクチルジエタノールアミン
Ｓ−８：石油スルホン酸カルシウム
【００２８】
Ｌ−１：ナフテン油
Ｌ−２：菜種油
Ｌ−３：牛脂
Ｌ−４：塩素化パラフィン
【００２９】
【発明の効果】
既に明らかなように、以上説明した本発明には、金属材料の塑性加工において、潤滑性に優れ、且つ環境汚染を惹起しないという効果がある。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an oil-based lubricant composition for plastic working of a metal material (hereinafter simply referred to as an oil-based lubricant composition), and more specifically, when the metal material is subjected to plastic working such as rolling, extruding, drawing, forging, and pressing. The present invention relates to an oil-based lubricant composition to be used.
[0002]
[Prior art]
Conventionally, as a base oil, a naphthenic or paraffinic mineral oil or a mixed oil obtained by adding animal and vegetable oils such as rapeseed oil, soybean oil, palm oil, beef tallow, lard, and whale oil as a base oil has been generally used as an oil-based lubricant composition. Used, if necessary, such base oils as oily improvers such as fatty acids, fatty acid esters, higher alcohols, extreme pressure additives such as sulfur-containing organic compounds, chlorine-containing organic compounds, phosphorus-containing organic compounds, and further zinc stearate A compound containing a solid lubricant such as calcium stearate or molybdenum disulfide is used. However, these conventional oil-based lubricant compositions are inferior in lubricity in plastic processing of metal materials, and use a mineral oil with low biodegradability as a base oil, so that they tend to cause environmental pollution.
[0003]
[Problems to be solved by the invention]
The problem to be solved by the present invention is to provide an oil-based lubricant composition which is excellent in lubricity in plastic working of a metal material and does not cause environmental pollution.
[0004]
[Means for Solving the Problems]
Therefore, as a result of studies conducted by the present inventors to solve the above-mentioned problems, it is correctly suitable that sesame oil is used as a base oil and that it contains a nonionic surfactant and a sulfur-containing organic compound in a predetermined ratio. I found out.
[0005]
That is, the present invention comprises sesame oil, a nonionic surfactant and a sulfur-containing organic compound, 50 to 90% by weight of the sesame oil, 5 to 20% by weight of the nonionic surfactant and the sulfur-containing organic compound. The present invention relates to an oil-based lubricant composition comprising 5 to 45% by weight.
[0006]
The oil-based lubricant composition according to the present invention uses sesame oil as a base oil, and therefore does not contain mineral oil. As such sesame oil itself, known ones can be applied. For example, 1) sesame oil obtained by squeezing raw sesame seeds from sesame seeds indirectly roasted with hot air, 2) sesame oil obtained by squeezing raw sesame seeds from sesame seeds roasted in red ) Sesame oil obtained by extraction treatment from roasted sesame seeds of 1) or 2) with an organic solvent, 4) Sesame oil obtained by pressing oil from raw sesame seeds, 5) Extraction treatment from raw sesame seeds with an organic solvent Among them, sesame oil obtained from the roasted sesame seeds 1) to 3) above is preferable.
[0007]
The oil-based lubricant composition according to the present invention uses sesame oil as described above as a base oil, and specifically contains 50 to 90% by weight of sesame oil, but contains 50 to 80% by weight. It is preferable to do so.
[0008]
The oil-based lubricant composition according to the present invention further contains a nonionic surfactant in addition to sesame oil. Such nonionic surfactants include polyoxyalkylene adducts of polyhydric alcohol fatty acid esters, polyoxyalkylene adducts of polyhydric alcohol partial fatty acid esters, polyoxyalkylene adducts of fatty acid esters, polyoxyalkylenes of aliphatic alcohols. Examples include alkylene adducts, polyoxyalkylene adducts of aliphatic amines, and polyoxyalkylene adducts of alkyl-substituted phenols. Among them, polyoxyalkylene adducts of polyhydric alcohol fatty acid esters are preferred. The content of the nonionic surfactant described above is 5 to 20% by weight in the oil-based lubricant composition, but is preferably 5 to 10% by weight.
[0009]
The oil-based lubricant composition according to the present invention further contains a sulfur-containing organic compound in addition to sesame oil and a nonionic surfactant. Examples of the sulfur-containing organic compound include 1) sulfurized fats and oils such as sulfurized green perfume oil, sulfurized lard oil and sulfurized soybean oil, 2) polysulfides such as di-n-hexyl disulfide, di-t-octyl trisulfide, and dibenzyl tetrasulfide. 3) Esters of aliphatic monohydric alcohols and sulfur-containing aliphatic monocarboxylic acids such as butyl-lauryl thioacetate, 2-ethylhexyl-lauryl thiopropionate, oleyl-phenyl mercaptoacetate, etc. 4) diisooctyl-thiodisuccinate Esters of aliphatic monohydric alcohols and sulfur-containing aliphatic dicarboxylic acids such as acid esters, dilauryl-thiodipropionic acid esters, distearyl-methylenebisthiopropionic acid esters, 5) neopentyl glycol-lauryl thioacetic acid diesters, 1, -Esters of polyhydric alcohols and sulfur-containing aliphatic monocarboxylic acids, such as hexanediol-laurylthiopropionic acid diester, trimethylolpropane-phenylmercaptoacetic acid triester, 6) laurylthioacetic acid = triethylamine, laurylthiopropionic acid = Diethanolamine, phenylmercaptoacetic acid = α-laurylamino-ω-hydroxy-polyoxyethylene (number 6 of oxyethylene units, hereinafter referred to as n = 6) and other sulfur-containing aliphatic monocarboxylic acid amine salts, 7) thiodisuccinic acid = octyl Sulfur-containing aliphatic dica such as amine, thiodipropionic acid = octyldiethanolamine, methylenebisthiopropionic acid = α-stearylamino-ω-hydroxy-polyoxypropylene (number of oxypropylene units 6, hereinafter referred to as m = 6) Examples include sulfonic acid amine salts, 8) organic sulfonates such as calcium petroleum sulfonate, magnesium dilauryl cetyl sulfonate, sodium naphthalene sulfonate, potassium paraffin wax-substituted benzene sulfonate, and barium petroleum sulfonate. Polysulfide, esters of aliphatic monohydric alcohols and sulfur-containing aliphatic monocarboxylic acids, and organic sulfonates are preferred. Although the content rate of the sulfur-containing organic compound demonstrated above shall be 5-45 weight% in an oil-based lubricant composition, it is preferable to set it as 10-40 weight%.
[0010]
The oily lubricant composition according to the present invention has been described above. As described above, the oily lubricant composition according to the present invention includes 50 to 80% by weight of sesame oil and 5 to 5% of a nonionic surfactant. What contains 10 weight% and a sulfur-containing organic compound in the ratio of 10 to 40 weight% (total 100 weight%) is preferable.
[0011]
The oil-based lubricant composition according to the present invention is an antioxidant, antiseptic, antifungal agent, rust preventive, anticorrosive, antifoaming agent, chelating agent within the range not impairing the effects of the present invention. Etc. can also be used together.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Examples of the oil-based lubricant composition according to the present invention include the following 1) to 5).
1) 70% by weight of sesame oil obtained by squeezing raw sesame seeds from indirect hot air roasted sesame seeds, 10% by weight of polyoxyethylene (n = 20) hardened castor oil ether oleic acid triester and dibenzyltetra An oily lubricant composition comprising sulfide in a proportion of 20% by weight.
[0013]
2) 60% by weight of sesame oil obtained by squeezing raw sesame seeds from roasted sesame seeds, 10% by weight of oleic acid triester of polyoxyethylene (n = 20) hardened castor oil ether and 2-ethylhexyl An oily lubricant composition comprising lauryl thiopropionic acid ester in a proportion of 30% by weight.
[0014]
3) 70% by weight of sesame oil obtained by squeezing raw sesame seeds from indirect hot air roasted sesame seeds, 10% by weight of oleic acid triester of polyoxyethylene (n = 20) hardened castor oil ether and petroleum sulfonic acid An oily lubricant composition comprising calcium in a proportion of 20% by weight.
[0015]
4) 70% by weight of sesame oil obtained by extraction treatment of raw sesame seeds with far-red roasted sesame seeds with n-hexane, 10% by weight of oleic acid triester of polyoxyethylene (n = 20) hardened castor oil ether And an oil-based lubricant composition comprising dibenzyltetrasulfide in a proportion of 20% by weight.
[0016]
5) 60% by weight of sesame oil obtained by extraction treatment of raw sesame seeds with indirect hot air roasted sesame seeds with n-hexane, 10% by weight of oleic acid triester of polyoxyethylene (n = 20) hardened castor oil ether And an oily lubricant composition comprising 2-ethylhexyl-lauryl thiopropionic acid ester in a proportion of 30% by weight.
[0017]
Hereinafter, in order to make the configuration and effects of the present invention more specific, examples and the like will be described. However, the present invention is not limited to the examples. In the following examples and the like, unless otherwise indicated, parts are parts by weight and% is% by weight.
[0018]
【Example】
Test category 1 (Preparation of oil-based lubricant composition)
Examples 1-12
The oily lubricant composition was prepared by mixing the sesame oil described in Table 1, the nonionic surfactant and the sulfur-containing organic compound so as to have the ratio described in Table 1.
[0019]
Comparative Examples 1-4 and 7
The base oil described in Table 2 was used as the oil-based lubricant composition.
[0020]
Comparative Examples 5 and 6
An oil-based lubricant composition was prepared by mixing the base oil and the sulfur-containing organic compound shown in Table 2 so as to have the ratio shown in Table 2.
[0021]
Test category 2 (Evaluation of oil-based lubricant composition)
・ Measurement of friction coefficient As an index to evaluate the plastic workability of the oil lubricant composition of each example prepared in Test Category 1, the friction coefficient of the oil lubricant composition of each example was measured by the following friction coefficient measurement method. And evaluated according to the following criteria. The results are summarized in Tables 1 and 2.
Friction coefficient measurement method: The oil lubricant composition of each example was subjected to a Kamata-type pendulum type oil friction tester (manufactured by Shinko Engineering Co., Ltd.), and the friction coefficient at a contact surface maximum stress of 111 kg / mm 2 and a measurement temperature of 80 ° C. was measured. did.
Evaluation criteria A: Friction coefficient is less than 0.100 A to B: Friction coefficient is 0.100 or more and less than 0.115 B: Friction coefficient is 0.115 or more and less than 0.150 Δ: Friction coefficient is 0.150 or more and 0.1. Less than 200 ×: The friction coefficient is 0.200 or more.
・ Evaluation of biodegradability As an index for evaluating the environmental pollution when the oily lubricant composition of each example prepared in Test Category 1 is discharged to the environment, the oily lubrication of each example is performed by the following biodegradability evaluation method. The biodegradability of the agent composition was measured and evaluated according to the following criteria. The results are summarized in Tables 1 and 2.
Biodegradability evaluation method: The biodegradability after 1 week was measured by the OEPA OECD 302B method.
Evaluation criteria ○: Biodegradation rate is 70% or more ×: Biodegradation rate is less than 70% [0023]
[Table 1]
[Table 2]
In Table 1 and Table 2,
Percentage:%
M-1: Sesame oil obtained by squeezing oil from raw sesame seeds. Here, the sesame oil refine | purified in the procedure of the deoxidation process-> decoloring process-> deodorizing process was used as M-1 for the crude oil squeezed from the Chinese sesame seed.
M-2: Sesame oil obtained by squeezing raw sesame seeds from sesame seeds roasted with indirect hot air. Here, sesame oil obtained by squeezing oil from Chinese sesame seeds obtained by indirect hot air roasting with a rotary kiln having an atmospheric temperature of 250 ° C. was designated as M-2.
M-3: Sesame oil obtained by squeezing raw sesame seeds from deep red roasted sesame seeds. Here, sesame oil obtained by squeezing oil from Chinese sesame seeds roasted in a far-infrared heating furnace with an ambient temperature of 250 ° C. was M-3.
M-5: Sesame oil obtained by subjecting raw sesame seeds to extraction with an organic solvent from sesame seeds roasted with indirect hot air. Here, sesame oil obtained by extraction treatment with hexane seed from sesame seeds indirectly roasted with hot air in a rotary kiln with an atmosphere temperature of 250 ° C. was designated as M-5.
M-6: Sesame oil obtained by subjecting raw sesame seeds to a deep red roasted sesame seed and extracted with an organic solvent. Here, the sesame oil obtained by extracting with n-hexane from the sesame seeds roasted in the far-infrared heating furnace with the atmosphere temperature of 250 ° C. in the far-infrared heating furnace was designated as M-6.
[0026]
N-1: Polyoxyethylene (n = 25) hardened castor oil ether oleic acid triester
S-1: Sulfurized lard oil S-2: Dibenzyltetrasulfide S-3: 2-ethylhexyl-lauryl thiopropionate S-4: Dilauryl-thiodipropionate S-5: 1,6-hexanediol Laurylthiopropionic acid diester S-6: Laurylthiopropionic acid = diethanolamine S-7: Thiopropionic acid = octyldiethanolamine S-8: Petroleum calcium sulfonate
L-1: Naphthenic oil L-2: Rape seed oil L-3: Beef tallow L-4: Chlorinated paraffin
【The invention's effect】
As is apparent from the above, the present invention described above has an effect that it is excellent in lubricity and does not cause environmental pollution in plastic working of a metal material.
Claims (5)
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| JP2001355497A JP4004021B2 (en) | 2001-11-21 | 2001-11-21 | Oil-based lubricant composition for plastic working of metal materials |
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