JP6088805B2 - Anti-rust oil composition - Google Patents

Anti-rust oil composition Download PDF

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JP6088805B2
JP6088805B2 JP2012252721A JP2012252721A JP6088805B2 JP 6088805 B2 JP6088805 B2 JP 6088805B2 JP 2012252721 A JP2012252721 A JP 2012252721A JP 2012252721 A JP2012252721 A JP 2012252721A JP 6088805 B2 JP6088805 B2 JP 6088805B2
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oil composition
oil
rust
mass
component
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JP2014101536A (en
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さやか 平田
さやか 平田
直樹 長瀬
直樹 長瀬
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Idemitsu Kosan Co Ltd
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Description

本発明は、防錆油組成物に関し、詳しくは焼結部品用の防錆油組成物に関する。   The present invention relates to a rust preventive oil composition, and more particularly to a rust preventive oil composition for sintered parts.

焼結部品は、原料となる金属紛体を混合して成形、焼結後、熱処理や切削等の金属加工を行い、防錆油を塗布した後に検品して出荷される。そのため、防錆油には前工程の金属加工油の影響を受けないこと、検品時の耐べとつき性、および出荷時の防錆性が要求される。
ここで、防錆油には、厚膜型と薄膜型がある。厚膜型は、空隙に防錆油が浸入しても表面で油膜を保持し、防錆性に優れるが、耐べとつき性に劣る。一方、薄膜型を焼結部品に塗布すると、材料の空隙に防錆油が浸入して表面が乾き、防錆性に劣るが、検品時の耐べとつき性に優れ、作業性がよい。
特許文献1には、薄膜型の防錆油組成物として多価アルコール(グリセリン、ソルビタン)の部分エステルとカルボン酸(ダイマー酸)を配合してなる薄膜型の防錆油組成物が開示されている。この防錆油組成物によれば、薄膜型でありながら防錆性およびその長期維持性に優れる(特許文献1の段落[0006]参照)。
Sintered parts are mixed with metal powders as raw materials, molded, sintered, subjected to metal processing such as heat treatment and cutting, coated with rust preventive oil, inspected and shipped. For this reason, the rust preventive oil is required not to be affected by the metal working oil in the previous process, to be sticky at the time of inspection, and to prevent rust at the time of shipment.
Here, the antirust oil includes a thick film type and a thin film type. The thick film type retains the oil film on the surface even when rust-preventing oil enters the gap, and is excellent in rust prevention, but is inferior in tackiness. On the other hand, when a thin film mold is applied to a sintered part, rust preventive oil enters the gaps in the material and the surface dries, resulting in poor rust prevention, but excellent stickiness during inspection and good workability.
Patent Document 1 discloses a thin-film rust preventive oil composition obtained by blending a partial ester of polyhydric alcohol (glycerin, sorbitan) and a carboxylic acid (dimer acid) as a thin-film rust preventive oil composition. Yes. According to this rust preventive oil composition, although it is a thin film type, it is excellent in rust prevention and its long-term maintainability (see paragraph [0006] of Patent Document 1).

特開2007−039764号公報JP 2007-039764 A

しかしながら、特許文献1で使用されるカルボン酸(ダイマー酸)は、防錆性を向上できるが、前工程の金属加工油に配合されるCaスルホネート等と反応物を生成し、反応物が焼結部品に付着して検品精度を低下させてしまう。   However, although the carboxylic acid (dimer acid) used in Patent Document 1 can improve rust prevention, it produces a reaction product such as Ca sulfonate blended with the metal processing oil in the previous step, and the reaction product is sintered. It will adhere to the parts and reduce the inspection accuracy.

本発明は、防錆性と耐べとつき性に優れ、前工程の金属加工油の影響を受けない防錆油組成物を提供することを目的とする。   An object of this invention is to provide the rust prevention oil composition which is excellent in rust prevention property and stickiness resistance, and is not influenced by the metalworking oil of a previous process.

前記課題を解決すべく、本発明は以下のような防錆油組成物を提供するものである。
〔1〕基油に、以下の(A)成分、(B)成分および(C)成分を配合してなることを特徴とする防錆油組成物。
(A)分子中に水酸基を有する、グリセリンの不飽和脂肪酸エステル
(B)分子中に水酸基を有する、ソルビタンの不飽和脂肪酸エステル
(C)分子中に水酸基を有するアルケニルグリセリルエーテル
〔2〕上述の〔1〕に記載の防錆油組成物において、前記(A)成分における不飽和脂肪酸がオレイン酸であることを特徴とする防錆油組成物。
〔3〕上述の〔1〕または〔2〕に記載の防錆油組成物において、前記(B)成分における不飽和脂肪酸がオレイン酸であることを特徴とする防錆油組成物。
〔4〕上述の〔1〕から〔3〕までのいずれか1つに記載の防錆油組成物において、前記(C)成分におけるアルケニルグリセリルエーテルがオレイルグリセリルエーテルである特徴とする防錆油組成物。
〔5〕上述の〔1〕から〔3〕までのいずれか1つに記載の防錆油組成物において、前記(C)成分が下記一般式(1)で示される
ことを特徴とする防錆油組成物。
RO(CH−CHOH−CH−O) −H (1)
(Rは炭素数12から30までのアルケニル基であり、nは1または2である。)
〔6〕上述の〔1〕から〔5〕までのいずれか1つに記載の防錆油組成物において、前記(A)成分の配合量が組成物全量基準で1.5質量%以上10質量%以下であることを特徴とする防錆油組成物。
〔7〕上述の〔1〕から〔6〕までのいずれか1つに記載の防錆油組成物において、前記(B)成分の配合量が組成物全量基準で0.3質量%以上5質量%以下であることを特徴とする防錆油組成物。
〔8〕上述の〔1〕から〔7〕までのいずれか1つに記載の防錆油組成物において、前記(C)成分の配合量が組成物全量基準で0.1質量%以上5質量%以下であることを特徴とする防錆油組成物。
〔9〕上述の〔1〕から〔8〕までのいずれか1つに記載の防錆油組成物が焼結部品用であることを特徴とする防錆油組成物。
In order to solve the above-mentioned problems, the present invention provides the following antirust oil composition.
[1] A rust preventive oil composition comprising the following components (A), (B) and (C) in a base oil.
(A) Unsaturated fatty acid ester of glycerin having a hydroxyl group in the molecule (B) Unsaturated fatty acid ester of sorbitan having a hydroxyl group in the molecule (C) Alkenyl glyceryl ether having a hydroxyl group in the molecule [2] 1] The antirust oil composition according to 1), wherein the unsaturated fatty acid in the component (A) is oleic acid.
[3] The rust preventive oil composition according to the above [1] or [2], wherein the unsaturated fatty acid in the component (B) is oleic acid.
[4] Rust preventive oil composition according to any one of [1] to [3] above, wherein the alkenyl glyceryl ether in component (C) is oleyl glyceryl ether object.
[5] Rust preventive oil composition according to any one of [1] to [3] above, wherein the component (C) is represented by the following general formula (1) Oil composition.
RO (CH 2 -CHOH-CH 2 -O) n -H (1)
(R is an alkenyl group having 12 to 30 carbon atoms, and n is 1 or 2.)
[6] In the rust preventive oil composition according to any one of [1] to [5], the blending amount of the component (A) is 1.5% by mass or more and 10% by mass based on the total amount of the composition. % Anti-rust oil composition characterized by being less than or equal to%.
[7] In the rust preventive oil composition according to any one of [1] to [6], the blending amount of the component (B) is 0.3% by mass or more and 5% by mass based on the total amount of the composition. % Anti-rust oil composition characterized by being less than or equal to%.
[8] In the rust preventive oil composition according to any one of [1] to [7], the blending amount of the component (C) is 0.1% by mass or more and 5% by mass based on the total amount of the composition. % Anti-rust oil composition characterized by being less than or equal to%.
[9] A rust-preventing oil composition, wherein the rust-preventing oil composition according to any one of [1] to [8] is for sintered parts.

本発明によれば、防錆性と耐べとつき性に優れ、前工程の金属加工油の影響を受けない防錆油組成物を提供することができる。この組成物は焼結部品用として好適である。   ADVANTAGE OF THE INVENTION According to this invention, it is excellent in rust prevention property and stickiness resistance, and can provide the rust prevention oil composition which is not influenced by the metalworking oil of a previous process. This composition is suitable for sintered parts.

本発明の防錆油組成物(以下、「本組成物」ともいう。)は、基油に、以下の(A)成分、(B)成分および(C)成分を配合してなることを特徴とする。
(A)分子中に水酸基を有する、グリセリンの不飽和脂肪酸エステル
(B)分子中に水酸基を有する、ソルビタンの不飽和脂肪酸エステル
(C)分子中に水酸基を有するアルケニルグリセリルエーテル
以下、本発明を詳細に説明する。
The rust preventive oil composition of the present invention (hereinafter also referred to as “the present composition”) is characterized by blending the following components (A), (B) and (C) with a base oil. And
(A) Unsaturated fatty acid ester of glycerin having a hydroxyl group in the molecule (B) Unsaturated fatty acid ester of sorbitan having a hydroxyl group in the molecule (C) Alkenyl glyceryl ether having a hydroxyl group in the molecule Explained.

[基油]
基油は鉱油でもよく合成油でもよい。鉱油としては、潤滑油の基油として用いられるものであれば特に限定されるものではない。パラフィン基系原油、中間基系原油、またはナフテン基系原油を常圧蒸留した残渣油、または常圧蒸留の残渣油を減圧蒸留して得られる留出油、さらにはこれらを常法に従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、白土処理油などを挙げることができる。
また、合成油としては、例えば、ポリ−α−オレフィン、α−オレフィンコポリマー、ポリブテン、アルキルベンゼン、ポリオールエステル、二塩基酸エステル、ポリオキシアルキレングリコール、ポリオキシアルキレングリコールエステル、ポリオキシアルキレングリコールエーテル、ヒンダードエステル、シリコーンオイルなどを挙げることができる。
これらの潤滑油基油は、1種単独で、または2種以上を混合して、さらには鉱油と合成油を組み合わせて使用することができる。
基油の40℃動粘度は、1mm/s以上1000mm/s以下が好ましく、より好ましくは2mm/s以上500mm/s、さらに好ましくは3mm/s以上100mm/s以下である。
[Base oil]
The base oil may be mineral oil or synthetic oil. The mineral oil is not particularly limited as long as it is used as a base oil for lubricating oil. Residual oil obtained by atmospheric distillation of paraffinic, intermediate, or naphthenic crude oil, or distillate obtained by vacuum distillation of atmospheric distillation residual oil, and these are refined according to conventional methods. The refined oil obtained by this, for example, solvent refined oil, hydrogenated refined oil, dewaxed oil, clay-treated oil, etc. can be mentioned.
Synthetic oils include, for example, poly-α-olefin, α-olefin copolymer, polybutene, alkylbenzene, polyol ester, dibasic acid ester, polyoxyalkylene glycol, polyoxyalkylene glycol ester, polyoxyalkylene glycol ether, hinder. Examples include polyesters and silicone oils.
These lubricating base oils can be used singly or in combination of two or more, and a combination of mineral oil and synthetic oil can be used.
The 40 ° C. kinematic viscosity of the base oil is preferably 1 mm 2 / s or more and 1000 mm 2 / s or less, more preferably 2 mm 2 / s or more and 500 mm 2 / s, and further preferably 3 mm 2 / s or more and 100 mm 2 / s or less. .

本組成物は、いわゆる薄膜型の防錆油として用いることが望ましく、その場合の基油は以下のような低粘度基油と中・高粘度基油を混合して用いることが好ましい。その際の基油としては上述した鉱油および合成油のいずれでもよい。   The present composition is desirably used as a so-called thin-film rust preventive oil, and the base oil in that case is preferably used by mixing a low-viscosity base oil and a medium / high-viscosity base oil as described below. As the base oil at that time, any of the above-described mineral oil and synthetic oil may be used.

(低粘度基油)
低粘度基油は、いわゆる溶剤として用いるものであるが、40℃動粘度が0.8mm/s以上4mm/s以下の範囲の基油が好ましく、1.5mm/s以上2mm/s以下の範囲の基油がより好ましい。
40℃動粘度が0.8mm/s未満であると引火点が低くなり取扱いが困難になるおそれがある。一方、40℃動粘度が4mm/sを超えると焼結部品の空隙に浸透しにくくなるおそれがあり、防錆性が低下するおそれがある。
また、この低粘度基油は、基油全体に占める割合が55質量%以上75質量%以下であることが好ましい。この割合が55質量%未満であると焼結部品の空隙に浸透する基油の量が少なくなり、防錆性が低下するおそれがある。一方この割合が75質量%を超えると防錆性等を発揮する不揮発分の含有量が減るため、表面に残留する油膜が薄くなり、防錆性が低下するおそれがある。
このような低粘度基油としては、芳香族分が少ないことが好ましく、鉱油系基油であれば、パラフィン系基油あるいはナフテン系基油を用いることが好ましい。
(Low viscosity base oil)
Low viscosity base oil, but is to use a so-called solvent, 40 ° C. kinematic viscosity are preferred base oil of the range 0.8 mm 2 / s or more 4mm 2 / s, 1.5mm 2 / s or more 2 mm 2 / A base oil in the range of s or less is more preferred.
If the 40 ° C. kinematic viscosity is less than 0.8 mm 2 / s, the flash point may be low and handling may be difficult. On the other hand, if the kinematic viscosity at 40 ° C. exceeds 4 mm 2 / s, there is a possibility that it will be difficult to penetrate into the voids of the sintered part, and the rust prevention property may be lowered.
Moreover, it is preferable that the ratio for which this low-viscosity base oil accounts to the whole base oil is 55 to 75 mass%. If this proportion is less than 55% by mass, the amount of base oil penetrating into the voids of the sintered part is reduced, and the rust prevention property may be lowered. On the other hand, if this ratio exceeds 75% by mass, the content of non-volatile components exhibiting rust prevention properties and the like is reduced, so that the oil film remaining on the surface becomes thin and the rust prevention properties may be lowered.
Such a low-viscosity base oil preferably has a low aromatic content, and if it is a mineral oil base oil, it is preferable to use a paraffin base oil or a naphthenic base oil.

(中粘度基油)
中粘度基油は造膜剤として機能する。好ましい40℃動粘度は5mm/s以上200mm/s以下である。40℃動粘度が5mm/sより低くなると焼結部品表面での油膜保持が難しくなる。40℃動粘度が200mm/sより高くなるとべとつく原因になる。
(Medium viscosity base oil)
The medium viscosity base oil functions as a film forming agent. A preferable 40 ° C. kinematic viscosity is 5 mm 2 / s or more and 200 mm 2 / s or less. When the 40 ° C. kinematic viscosity is lower than 5 mm 2 / s, it is difficult to hold the oil film on the surface of the sintered part. If the 40 ° C. kinematic viscosity is higher than 200 mm 2 / s, it will cause stickiness.

(高粘度基油)
高粘度基油も造膜剤として機能する。好ましい40℃動粘度は300mm/s以上1000mm/s以下である。40℃動粘度が300mm/sより低くなると焼結部品表面での油膜保持が難しくなる。40℃動粘度が1000mm/sより高くなるとべとつく原因になる。
造膜剤としては、不揮発分全体の粘度を所望の値に調整する観点より上述の中粘度基油と高粘度基油を混合して用いることが好ましい。
(High viscosity base oil)
A high viscosity base oil also functions as a film forming agent. A preferable 40 ° C. kinematic viscosity is 300 mm 2 / s or more and 1000 mm 2 / s or less. When the 40 ° C. kinematic viscosity is lower than 300 mm 2 / s, it becomes difficult to hold the oil film on the surface of the sintered part. If the 40 ° C. kinematic viscosity is higher than 1000 mm 2 / s, it will cause stickiness.
The film-forming agent is preferably used by mixing the above-mentioned medium viscosity base oil and high viscosity base oil from the viewpoint of adjusting the viscosity of the entire nonvolatile content to a desired value.

[(A)成分]
本組成物における(A)成分は、分子中に水酸基を有する、グリセリンの不飽和脂肪酸エステルである。本発明では、モノヒドロキシエステル体とジヒドロキシエステル体のいずれでもよい。(A)成分の分子中に水酸基がないと防錆性が低下する。防錆性の観点より、ジヒドロキシエステル体が好ましい。不飽和脂肪酸としては溶解性と防錆性の観点よりオレイン酸が好ましい。
それ故、(A)成分としては、グリセリンモノオレエートが好ましい。
[(A) component]
The component (A) in the present composition is an unsaturated fatty acid ester of glycerin having a hydroxyl group in the molecule. In the present invention, either a monohydroxy ester or a dihydroxy ester may be used. When there is no hydroxyl group in the molecule of component (A), the rust prevention property is lowered. From the viewpoint of rust prevention, a dihydroxy ester is preferred. As the unsaturated fatty acid, oleic acid is preferable from the viewpoints of solubility and rust prevention.
Therefore, glycerin monooleate is preferable as the component (A).

(A)成分の配合量は、組成物全量基準で1.5質量%以上10質量%以下であることが好ましく、5質量%以上8質量%以下であることがより好ましい。
(A)成分の配合量が1.5質量%未満であると防錆性が十分ではなくなるおそれがある。一方、(A)成分の配合量が10質量%を超えると、耐べとつき性が低下するおそれがある。
The blending amount of the component (A) is preferably 1.5% by mass or more and 10% by mass or less, more preferably 5% by mass or more and 8% by mass or less based on the total amount of the composition.
When the blending amount of the component (A) is less than 1.5% by mass, the rust prevention property may not be sufficient. On the other hand, if the blending amount of the component (A) exceeds 10% by mass, the stickiness resistance may be lowered.

[(B)成分]
本組成物における(B)成分は、分子中に水酸基を有する、ソルビタンの不飽和脂肪酸エステルである。
ソルビタン自身には水酸基が4つあるが、モノヒドロキシエステル体、ジヒドロキシエステル体およびトリヒドロキシ体のいずれでもよい。(B)成分の分子中に水酸基がないと防錆性が低下するが、防錆性の観点よりジヒドロキシエステル体が好ましい。不飽和脂肪酸としては溶解性と防錆性の観点よりオレイン酸が好ましい。
それ故、(B)成分としては、ソルビタンセスキオレエートが好ましい。
[Component (B)]
Component (B) in the present composition is a sorbitan unsaturated fatty acid ester having a hydroxyl group in the molecule.
Sorbitan itself has four hydroxyl groups, but may be any of monohydroxy ester, dihydroxy ester, and trihydroxy. If there is no hydroxyl group in the molecule of component (B), the rust prevention property is lowered, but a dihydroxy ester is preferred from the viewpoint of rust prevention property. As the unsaturated fatty acid, oleic acid is preferable from the viewpoints of solubility and rust prevention.
Therefore, sorbitan sesquioleate is preferable as the component (B).

(B)成分の好ましい配合量は、組成物全量基準で0.3質量%以上5質量%以下であることが好ましく、0.7質量%以上2質量%以下であることがより好ましい。
(B)成分の配合量が0.3質量%未満であると防錆性が十分ではなくなるおそれがある。一方、(B)成分の配合量が5質量%を超えても防錆効果の向上はそれほど望めない。
(B) It is preferable that it is 0.3 mass% or more and 5 mass% or less, and, as for the preferable compounding quantity of a component, it is more preferable that it is 0.7 mass% or more and 2 mass% or less.
When the blending amount of the component (B) is less than 0.3% by mass, the rust prevention property may not be sufficient. On the other hand, even if the blending amount of the component (B) exceeds 5% by mass, the improvement of the rust prevention effect cannot be expected so much.

[(C)成分]
本組成物における(C)成分は、分子中に水酸基を有するアルケニルグリセリルエーテルである。(C)成分の分子中に水酸基がないと防錆性が低下する。
防錆性および耐べとつき性の観点より、上記アルケニルグリセリルエーテルは、オレイルグリセリルエーテルであることが好ましい。
また、上記アルケニルグリセリルエーテルは、下記一般式(1)で示される構造を有することが好ましい。
RO(CH−CHOH−CH−O) −H (1)
ここで、Rは炭素数12から30までのアルケニル基であり、オレイル基であることが好ましい。nは1または2である。このような構造を有するアルケニルグリセリルエーテルは、防錆性および耐べとつき性に優れる。
[Component (C)]
(C) component in this composition is the alkenyl glyceryl ether which has a hydroxyl group in a molecule | numerator. If there is no hydroxyl group in the component (C) molecule, the rust-proofing property is lowered.
The alkenyl glyceryl ether is preferably oleyl glyceryl ether from the viewpoint of rust prevention and stickiness resistance.
Moreover, it is preferable that the said alkenyl glyceryl ether has a structure shown by following General formula (1).
RO (CH 2 -CHOH-CH 2 -O) n -H (1)
Here, R is an alkenyl group having 12 to 30 carbon atoms, and is preferably an oleyl group. n is 1 or 2. The alkenyl glyceryl ether having such a structure is excellent in rust resistance and stickiness resistance.

(C)成分の好ましい配合量は、組成物全量基準で0.1質量%以上5質量%以下であることが好ましく、0.1質量%以上2質量%以下であることがより好ましい。
(C)成分の配合量が0.1質量%未満であると防錆性や耐べとつき性が十分ではなくなるおそれがある。一方、(C)成分の配合量が5質量%を超えても防錆効果の向上はそれほど望めない。
(C) It is preferable that it is 0.1 to 5 mass% with respect to the composition whole quantity, and, as for the preferable compounding quantity of a component, it is more preferable that it is 0.1 to 2 mass%.
When the blending amount of the component (C) is less than 0.1% by mass, the rust prevention property and stickiness resistance may not be sufficient. On the other hand, even if the blending amount of the component (C) exceeds 5% by mass, the improvement of the rust prevention effect cannot be expected so much.

上述した本組成物は、防錆性と耐べとつき性に優れ、前工程の金属加工油の影響を受けない防錆油として提供することができる。それ故、本組成物は焼結部品用防錆油として極めて優れている。
また、本組成物には、必要に応じ、本発明の目的を損なわない範囲で、酸化防止剤や金属不活性化剤等の各種添加剤を配合することができる。
The present composition described above can be provided as a rust-preventing oil that is excellent in rust prevention and stickiness resistance and is not affected by the metalworking oil in the previous step. Therefore, this composition is extremely excellent as a rust preventive oil for sintered parts.
Moreover, various additives, such as antioxidant and a metal deactivator, can be mix | blended with this composition as needed in the range which does not impair the objective of this invention.

酸化防止剤としては、2,6−ジ−t−ブチルフェノールや2,6−ジ−t−ブチル−p−クレゾールなどのフェノール系酸化防止剤、アルキル化ジフェニルアミンやフェニル−α−ナフチルアミンなどのアミン系酸化防止剤を用いることができる。
金属不活性剤としては、例えばベンゾトリアゾール、チアジアゾール、アルケニルコハク酸エステル、およびこれらの誘導体などが挙げられる。
これらの添加剤の好ましい配合量は、組成物全量基準で0.1質量%以上10質量%以下の範囲である。
本組成物を焼結部品等の金属材料に塗布する方法としては特に限定はなく、浸漬法、シャワー法、静電塗装法などの一般的な手法を用いることができる。
Antioxidants include phenolic antioxidants such as 2,6-di-t-butylphenol and 2,6-di-t-butyl-p-cresol, and amines such as alkylated diphenylamine and phenyl-α-naphthylamine. Antioxidants can be used.
Examples of the metal deactivator include benzotriazole, thiadiazole, alkenyl succinate, and derivatives thereof.
A preferable blending amount of these additives is in a range of 0.1% by mass or more and 10% by mass or less based on the total amount of the composition.
A method for applying the composition to a metal material such as a sintered part is not particularly limited, and general techniques such as a dipping method, a shower method, and an electrostatic coating method can be used.

次に、本発明を実施例によりさらに詳細に説明するが、本発明はこれらの例によってなんら限定されるものではない。
〔実施例1〜6、比較例1〜4〕
以下に示す基油および添加剤を用いて表1に示す配合組成を有する防錆油組成物(供試油)を調製した。
(1)基油1:鉱油(40℃動粘度:1.621mm/s)
(2)基油2:鉱油(40℃動粘度:90.51mm/s)
(3)基油3:鉱油(40℃動粘度:408.8mm/s)
(3)添加剤A:グリセリンモノオレエート((A)成分)
(4)添加剤B:ソルビタンセスキオレエート((B)成分)
(5)添加剤C:オレイルグリセリルエーテル((C)成分)
(6)添加剤D:ダイマー酸(C36 Dimer acid CAS:61788-89-4)
(7)添加剤E:ペンタエリスリトールの部分エステル
(8)添加剤F:ラノリン脂肪酸のエステル
(9)添加剤G:ナトリウムスルホネート
(10)添加剤H:ベンゾトリアゾール
(11)添加剤I:酸化防止剤(Antioxidant5057 CAS:68411-46-1)
EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not limited at all by these examples.
[Examples 1-6, Comparative Examples 1-4]
A rust preventive oil composition (sample oil) having the composition shown in Table 1 was prepared using the base oil and additives shown below.
(1) Base oil 1: mineral oil (40 ° C. kinematic viscosity: 1.621 mm 2 / s)
(2) Base oil 2: mineral oil (40 ° C. kinematic viscosity: 90.51 mm 2 / s)
(3) Base oil 3: mineral oil (40 ° C. kinematic viscosity: 408.8 mm 2 / s)
(3) Additive A: Glycerol monooleate (component (A))
(4) Additive B: Sorbitan sesquioleate (component (B))
(5) Additive C: oleyl glyceryl ether (component (C))
(6) Additive D: Dimer acid (C36 Dimer acid CAS: 61788-89-4)
(7) Additive E: Partial ester of pentaerythritol (8) Additive F: Ester of lanolin fatty acid (9) Additive G: Sodium sulfonate (10) Additive H: Benzotriazole (11) Additive I: Antioxidation Agent (Antioxidant5057 CAS: 68411-46-1)

Figure 0006088805
Figure 0006088805

〔評価方法〕
(1)防錆性(水半浸漬試験)
供試油を塗布した焼結材料(市販品:SMF4030(φ20×10mm))を0.35質量%の食塩水に半浸漬させ、さび発生状況を目視で観察した。判定基準は以下のように、「さびるまでの日数」、「さびの程度」、および「液の色」について点数を付け、それらの合計を評価点とした。
さびるまでの日数:最高10点
(10点:5日以上、8点:4日、6点:3日、4点:2日、2点:1日)
さびの程度 :最高16点
(試験片側面 10点:さび無、8点:微小、6点:軽度:、4点:中度、2点:重度)
(試験片底面 6点:さび無、4点:中度、2点:重度)
液の色 :最高4点
(4点:透明、3点:淡黄色、2点:淡黄褐色、1点:黄褐色)
合計(評価点) :30点満点
また、比較例1の評点(25点)を基準として、以下の基準で評価した。
○:評価点が25点以上
△:評価点が23点または24点
×:評価点が22点以下
〔Evaluation method〕
(1) Rust prevention (water half immersion test)
The sintered material coated with the test oil (commercial product: SMF4030 (φ20 × 10 mm)) was half-immersed in 0.35% by mass of saline, and the state of rust generation was visually observed. Judgment criteria were scored for “number of days until rust”, “degree of rust”, and “color of liquid” as follows, and the sum of them was used as an evaluation score.
Number of days until rust: Up to 10 points (10 points: 5 days or more, 8 points: 4 days, 6 points: 3 days, 4 points: 2 days, 2 points: 1 day)
Degree of rust: Up to 16 points (side of test piece 10 points: no rust, 8 points: fine, 6 points: mild: 4 points: moderate, 2 points: severe)
(Bottom of test piece 6 points: no rust, 4 points: moderate, 2 points: severe)
Liquid color: Up to 4 points (4 points: transparent, 3 points: light yellow, 2 points: light tan, 1 point: tan)
Total (evaluation score): 30 points maximum Further, the evaluation was made according to the following criteria based on the score (25 points) of Comparative Example 1.
○: 25 or more evaluation points
Δ: 23 or 24 evaluation points
×: Evaluation score is 22 points or less

(2)耐べとつき性
表1における配合組成において、基油1(溶剤)を配合しない点を除き、同様に各供試油を調製した。
これらの供試油について、20℃における動粘度(不揮発分動粘度)を測定し、耐べとつき性の尺度とした。具体的には、比較例1(基油1なし)の不揮発分動粘度を基準値とし、この基準値に対する不揮発分動粘度の減少量(質量%)を以下の基準で評価した。
A:20質量%以上
B:20質量%未満
(2) Stickiness Resistance Each sample oil was prepared in the same manner except that the base oil 1 (solvent) was not blended in the blending composition in Table 1.
About these sample oil, kinematic viscosity (non-volatile partial kinematic viscosity) in 20 degreeC was measured, and it was set as the scale of stickiness resistance. Specifically, the non-volatile fractional kinematic viscosity of Comparative Example 1 (without base oil 1) was used as a reference value, and the amount of decrease (mass%) of the non-volatile fractional kinematic viscosity with respect to this reference value was evaluated according to the following criteria.
A: 20% by mass or more B: Less than 20% by mass

(3)前工程油の影響
前工程油として、40℃動粘度が20.44mm/sの鉱油系基油にCaスルホネートを0.5質量%添加した潤滑油組成物を用いた。そして、供試油と前工程油を9:1の質量比で混合し、23℃で24時間放置して反応物が生じるか確認した。反応物が認められなかったものを○とし、反応物が認められたものを×とした。
(3) Influence of pre-process oil As the pre-process oil, a lubricating oil composition in which 0.5% by mass of Ca sulfonate was added to a mineral base oil having a kinematic viscosity at 40 ° C of 20.44 mm 2 / s was used. Then, the test oil and the pre-process oil were mixed at a mass ratio of 9: 1 and left at 23 ° C. for 24 hours to confirm whether a reaction product was generated. A sample in which no reaction product was observed was marked with ◯, and a sample in which a reaction product was identified was marked with x.

〔評価結果〕
表1に示すように実施例1〜6の供試油は、基油に所定の3成分を配合しているので、いずれも十分な防錆性を示し、溶剤(基油1)が蒸発した後を想定した耐べとつき性の評価結果も優れている。さらに、前工程で使用された加工油の影響も受けない。これに対して、比較例1〜4の供試油は、本発明における所定の3成分のいずれかを欠いているため、防錆性、耐べとつき性、および前工程で使用された加工油に対する安定性のすべてを満足することができない。
〔Evaluation results〕
As shown in Table 1, since the sample oils of Examples 1 to 6 were blended with the predetermined three components in the base oil, all showed sufficient rust prevention properties and the solvent (base oil 1) evaporated. The evaluation results of stickiness resistance assuming the later are also excellent. Furthermore, it is not affected by the processing oil used in the previous process. On the other hand, since the test oils of Comparative Examples 1 to 4 lack any one of the predetermined three components in the present invention, the antirust property, stickiness resistance, and the processing oil used in the previous step Not all of the stability can be satisfied.

Claims (9)

基油に、以下の(A)成分、(B)成分および(C)成分を配合してなる
ことを特徴とする防錆油組成物。
(A)分子中に水酸基を有する、グリセリンの不飽和脂肪酸エステル
(B)分子中に水酸基を有する、ソルビタンの不飽和脂肪酸エステル
(C)分子中に水酸基を有するアルケニルグリセリルエーテル
A rust-preventive oil composition comprising the base oil blended with the following components (A), (B) and (C):
(A) Unsaturated fatty acid ester of glycerin having a hydroxyl group in the molecule (B) Unsaturated fatty acid ester of sorbitan having a hydroxyl group in the molecule (C) Alkenyl glyceryl ether having a hydroxyl group in the molecule
請求項1に記載の防錆油組成物において、
前記(A)成分における不飽和脂肪酸がオレイン酸である
ことを特徴とする防錆油組成物。
In the rust preventive oil composition according to claim 1,
The unsaturated fatty acid in the said (A) component is oleic acid. The antirust oil composition characterized by the above-mentioned.
請求項1または請求項2に記載の防錆油組成物において、
前記(B)成分における不飽和脂肪酸がオレイン酸である
ことを特徴とする防錆油組成物。
In the rust preventive oil composition according to claim 1 or 2,
The unsaturated fatty acid in the said (B) component is oleic acid. The antirust oil composition characterized by the above-mentioned.
請求項1から請求項3までのいずれか1項に記載の防錆油組成物において、
前記(C)成分におけるアルケニルグリセリルエーテルがオレイルグリセリルエーテルである特徴とする防錆油組成物。
In the rust preventive oil composition according to any one of claims 1 to 3,
The rust preventive oil composition wherein the alkenyl glyceryl ether in the component (C) is oleyl glyceryl ether.
請求項1から請求項3までのいずれか1項に記載の防錆油組成物において、
前記(C)成分が下記一般式(1)で示される
ことを特徴とする防錆油組成物。
RO(CH−CHOH−CHO) −H (1)
(Rは炭素数12から30までのアルケニル基であり、nは1または2である。)
In the rust preventive oil composition according to any one of claims 1 to 3,
The said (C) component is shown by following General formula (1). The antirust oil composition characterized by the above-mentioned.
RO (CH 2 -CHOH-CH 2 O) n -H (1)
(R is an alkenyl group having 12 to 30 carbon atoms, and n is 1 or 2.)
請求項1から請求項5までのいずれか1項に記載の防錆油組成物において、
前記(A)成分の配合量が組成物全量基準で1.5質量%以上10質量%以下である
ことを特徴とする防錆油組成物。
In the rust preventive oil composition according to any one of claims 1 to 5,
The compounding quantity of the said (A) component is 1.5 mass% or more and 10 mass% or less on the basis of the composition whole quantity. Rust prevention oil composition characterized by the above-mentioned.
請求項1から請求項6までのいずれか1項に記載の防錆油組成物において、
前記(B)成分の配合量が組成物全量基準で0.3質量%以上5質量%以下である
ことを特徴とする防錆油組成物。
In the rust preventive oil composition according to any one of claims 1 to 6,
The compounding quantity of the said (B) component is 0.3 mass% or more and 5 mass% or less on the basis of the composition whole quantity. Rust prevention oil composition characterized by the above-mentioned.
請求項1から請求項7までのいずれか1項に記載の防錆油組成物において、
前記(C)成分の配合量が組成物全量基準で0.1質量%以上5質量%以下である
ことを特徴とする防錆油組成物。
In the rust preventive oil composition according to any one of claims 1 to 7,
The compounding quantity of the said (C) component is 0.1 mass% or more and 5 mass% or less on the basis of the composition whole quantity. Rust prevention oil composition characterized by the above-mentioned.
請求項1から請求項8までのいずれか1項に記載の防錆油組成物が
焼結部品用である
ことを特徴とする防錆油組成物。
A rust preventive oil composition according to any one of claims 1 to 8, wherein the rust preventive oil composition is for sintered parts.
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