JP7169909B2 - Rust preventive oil composition and method for producing the same - Google Patents

Description

The present invention relates to a rust preventive oil composition and a method for producing the same.

Metallic materials made of metals such as iron are generally coated with a rust preventive oil to prevent the generation of rust and stain on the metal surface during the manufacturing process or before and after product shipment. Therefore, the rust-preventing oil composition is primarily required to have rust-preventive properties to prevent the formation of rust.
Such rust preventive oil compositions include, for example, a base oil composed of a mineral oil and/or a synthetic oil, a sulfonate, and further polyhydric alcohol partial esters, oxidized wax salts, esterified oxidized waxes, lanolin fatty acid salts, and esters. A rust preventive oil composition containing at least one compound selected from lanolin fatty acids and fatty acid salts (see, for example, Patent Document 1), a low-viscosity mineral oil, a high-viscosity mineral oil, a fatty acid amine salt, an ester, and a sarcosine-type compound , a rust inhibitor such as a sulfonate, and a rust preventive oil (see, for example, Patent Document 2) have been proposed.

As disclosed in these patent documents, the rust preventive oil composition is usually an oil composition containing a base oil such as mineral oil or synthetic oil and various additives. Various additives are employed according to the desired performance, and while a synergistic effect is expected from a plurality of additives, the effects may be offset.
For example, oxidized wax salts, esterified oxidized waxes, sarcosine-type compounds, sulfonates and the like contained in the rust preventive oil compositions disclosed in these patent documents are known as rust preventive components, and fatty acid salts, fatty acid amine salts and the like are known as rust preventive components. It is known as a component that expresses water removability. A rust-preventing component is a component that exhibits rust-preventive properties by adsorbing to the surface of a metal material and forming an oil film covering the surface, thereby suppressing contact between the surface and the air and preventing the generation of rust. be. On the other hand, the water removability is the ability to remove moisture existing on the surface of the metal material, and is the ability to penetrate between the surface of the metal material and the moisture adhering to the surface to remove the moisture. Therefore, the rust-preventing component and the component exhibiting water removability are common in that they are components having the ability to adsorb to the surface of the metal material. Therefore, in an oil composition containing a rust-preventing component and a water-removing component, these components inhibit each other's adsorption to the surface of the metal material, resulting in competitive adsorption. Thus, in the development of rust preventive oil compositions, even if various components are added according to the desired performance, the desired performance expected from the various components may not be obtained. It becomes extremely difficult to combine additives with

Further, as the rust preventive oil composition, a processing and rust preventive oil composition containing a mineral oil and/or a synthetic oil as a base oil, a fatty acid ester, an overbased metal sulfonate, and a neutral metal sulfonate (see, for example, Patent Document 3). is also proposed.

JP-A-2002-363592 JP 2013-199670 A JP 2012-62488 A

By the way, in the processing of metal materials, a rust preventive oil composition is applied to prevent the generation of rust and stain on the surface of the metal material during the manufacturing process or before and after product shipment, and various metals such as cutting and pressing are applied. When processing a material, the metal material may be processed using a processing oil after removing the rust preventive oil composition in advance using a cleaning liquid. Therefore, the rust preventive oil composition is sometimes required to have anti-rust properties as well as easy degreasing properties so that it can be easily removed from metal materials.
As described above, rust prevention is achieved by the fact that the rust prevention component contained in the rust prevention oil composition is adsorbed on the surface of the metal material, and an oil film is formed so as to cover the surface of the metal material. It is a performance that is expressed by preventing the occurrence of On the other hand, easy degreasing is a performance that is expressed by the ease with which an oil film formed on the surface of a metal material can be removed.

The rust preventive oil compositions disclosed in Patent Documents 1 and 2 have been studied for rust prevention, but have not been studied for easy degreasing, and have rust prevention and easy degreasing. It cannot be said that it is a thing.
In addition, the rust preventive oil composition for processing and processing disclosed in Patent Document 3 is disclosed as an oil composition which is excellent in rust prevention properties and easy degreasing properties with an alkaline degreasing agent or the like. However, in recent years, with the increasing demand for rust resistance and easy degreasing, there are cases where it is not possible to meet these requirements.

Furthermore, rust preventive oil compositions are now required to have various performances, for example, low temperature stability that suppresses the generation of precipitates even in a low temperature environment of about -10 ° C and can withstand use, There is also a demand for properties such as anti-adhesion properties that can reduce the amount used by reducing the amount of adhesion when applied to the surface of a metal material.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a rust preventive oil composition which is excellent in rust prevention and easy degreasing properties, and which is also excellent in low temperature stability and adhesion prevention properties, and a method for producing the rust preventive oil composition.

As a result of intensive studies in view of the above problems, the inventors have found that the problems can be solved by the following inventions. That is, the present invention provides a rust preventive oil composition having the following constitution and a method for producing the rust preventive oil composition.

1. Contains the following components (A) to (G), and the content of the (D) component, (E) component, (F) component, and (G) component with respect to the total amount of the (A) to (G) components is 2.6% by mass or more, 1.5% by mass or more, 2.6% by mass or more, and 0.5% by mass or more and 4.5% by mass or less.
(A) Solvent with kinematic viscosity at 40°C of 0.1 mm ² /s or more and 10.0 mm ² /s or less (B) Base oil with kinematic viscosity at 40°C of 100.0 mm ² /s or more and 200.0 mm ² /s or less ( C) Metal sulfonates with a base value of 50 mgKOH/g or less (D) Overbased metal sulfonates with a base value of 300 mgKOH/g or more (E) Waxes with an acid value of 10 mgKOH/g or more (F) Full esters of polyhydric alcohols (G) Poly Partial esters of functional alcohols2. 2. The rust preventive oil composition according to 1 above, wherein the component (A) is a hydrocarbon solvent.
3. 3. The rust preventive oil composition according to 1 or 2 above, wherein the component (B) contains a base oil 1 having a kinematic viscosity at 40° C. of 10.0 mm ² /s or more and 200.0 mm ² /s or less.
4. 3. The rust preventive oil composition according to 3 above, wherein the component (B) further contains a base oil 2 having a kinematic viscosity at 40° C. of 300.0 mm ² /s or more and 550.0 mm ² /s or less.
5. 5. The rust preventive oil composition according to any one of 1 to 4 above, wherein the component (C) is an alkaline earth metal sulfonate.
6. 6. The rust preventive oil composition according to any one of 1 to 5 above, wherein the component (D) is an overbased alkaline earth metal sulfonate.
7. 7. The rust preventive oil composition according to any one of 1 to 6 above, wherein the component (E) is obtained by oxidizing paraffin wax.
8. 8. The rust preventive oil according to any one of 1 to 7 above, wherein the content of component (A) with respect to the total amount of components (A) to (G) is 50.0% by mass or more and 85.0% by mass or less. Composition.
9. 9. The rust preventive oil according to any one of 1 to 8 above, wherein the content of component (B) with respect to the total amount of components (A) to (G) is 3.0% by mass or more and 25.0% by mass or less. Composition.
10. 10. Any one of the above 1 to 9, wherein the content of the component (C) in terms of metal with respect to the total amount of the components (A) to (G) is 0.01% by mass or more and 1.0% by mass or less. rust preventive oil composition.
11. 11. Any one of 1 to 10 above, wherein the content of component (D) in terms of metal relative to the total amount of components (A) to (G) is 0.1% by mass or more and 2.5% by mass or less. rust preventive oil composition.
12. 12. The rust preventive oil according to any one of 1 to 11 above, wherein the mass ratio ([(F)/(G)]) of the (F) component and the (G) component is more than 0.58 and 5.0 or less. Composition.
13. 13. The rust preventive oil composition as described in any one of 1 to 12 above, wherein the total content of the components (A) to (G) based on the total amount of the composition is 80.0% by mass or more.
14. The rust preventive oil composition as described in any one of 1 to 13 above, which has a kinematic viscosity of 1.0 mm ² /s or more and 5.0 mm ² /s or less at 40°C.
15. The contents of the following components (A) to (G), the (D) component, the (E) component, the (F) component, and the (G) component with respect to the total amount of the (A) to (G) components, respectively A method for producing a rust-preventing oil composition, which is blended so as to be 2.6% by mass or more, 1.5% by mass or more, 2.6% by mass or more, and 0.5% by mass or more and 4.5% by mass or less.
(A) Solvent with kinematic viscosity at 40°C of 0.1 mm ² /s or more and 10.0 mm ² /s or less (B) Base oil with kinematic viscosity at 40°C of 100.0 mm ² /s or more and 200.0 mm ² /s or less ( C) Metal sulfonates with a base value of 50 mgKOH/g or less (D) Overbased metal sulfonates with a base value of 300 mgKOH/g or more (E) Waxes with an acid value of 10 mgKOH/g or more (F) Full esters of polyhydric alcohols (G) Poly Partial Esters of Hydric Alcohols

INDUSTRIAL APPLICABILITY The present invention can provide a rust-preventing oil composition which is excellent in both rust prevention and easy degreasing properties, as well as excellent low-temperature stability and anti-adhesion properties, and a method for producing the rust-preventing oil composition.

Hereinafter, a rust preventive oil composition according to an embodiment of the present invention (hereinafter sometimes simply referred to as "this embodiment") will be specifically described. In this specification, the numerical values related to “less than”, “more than” and “to” regarding the description of numerical ranges are numerical values that can be arbitrarily combined, and the numerical values in the examples are used as the upper limit or lower limit. It is the numerical value obtained.

[Rust preventive oil composition]
The rust preventive oil composition of the present embodiment contains the following components (A) to (G), and the (D) component, (E) component, and (F) relative to the total amount of the (A) to (G) components A rust preventive oil in which the contents of component and component (G) are respectively 2.6% by mass or more, 1.5% by mass or more, 2.6% by mass or more, and 0.5% by mass or more and 4.5% by mass or less. composition.
(A) Solvent with kinematic viscosity at 40°C of 0.1 mm ² /s or more and 10.0 mm ² /s or less (B) Base oil with kinematic viscosity at 40°C of 100.0 mm ² /s or more and 200.0 mm ² /s or less ( C) Metal sulfonates with a base value of 50 mgKOH/g or less (D) Overbased metal sulfonates with a base value of 300 mgKOH/g or more (E) Waxes with an acid value of 10 mgKOH/g or more (F) Full esters of polyhydric alcohols (G) Poly partial esters of alcohols

The rust preventive oil composition of the present embodiment contains the components (D), (E), (F) and (G) even if any one of the components (A) to (G) is lacking. If the amount is not within the predetermined range, the effects of excellent rust prevention, easy degreasing, low-temperature stability, and anti-adhesion properties cannot be obtained.
As described above, the performance required of a rust preventive oil composition, such as rust prevention and easy degreasing, is a performance that is expressed according to the degree of adsorption of each component to the surface of a metal material. It is conceivable that they mutually inhibit adsorption to the surface of the metal material and cause competitive adsorption. Even if different components are added to obtain the desired performance, the desired performance may not be obtained, so it is extremely difficult to combine additives for the desired performance. By combining the above components and containing specific components in specific amounts, the composition has made it possible to achieve both, at a high level, the contradictory performances of rust prevention and easy degreasing. Furthermore, the rust preventive oil composition of the present embodiment, having such a constitution, not only has excellent rust resistance and easy degreasing properties, but also has excellent low-temperature stability and adhesion prevention properties, and is extremely excellent in terms of usability. It has performance.

In the rust preventive oil composition of the present embodiment, containing the components (A) to (G) includes not only the mode in which each of these components is present, but also some components of these components. Also included are embodiments comprising a reaction product from which is reacted. When a reaction product is included, the content of the component that contributed to the reaction product is the sum of the amount present in the composition without reaction and the amount that contributed to the reaction product.
Each component constituting the rust preventive oil composition of the present embodiment will be described below.

<(A) component: solvent>
The (A) component contained in the rust preventive oil composition of the present embodiment is a solvent having a 40° C. kinematic viscosity of 0.1 mm ² /s or more and 10.0 mm ² /s or less. Solvent-free, in particular, does not provide low temperature stability and anti-adhesive properties. In addition, after application to the surface of the metal material, the solvent volatilizes to form a stronger oil film. Furthermore, if the oil composition does not contain a solvent, the viscosity of the oil composition increases, and when it is used for a metal material having fine irregularities on its surface, poor coating to the metal material tends to occur, and the coating performance is reduced. A loss of efficiency can also occur.

The solvent can be used without any particular limitation, but from the viewpoint of improving rust resistance and easy degreasing, and improving adhesion prevention and low temperature stability, heteroatoms such as oxygen atoms, nitrogen atoms, sulfur atoms, etc. It is preferably a solvent that does not contain, that is, a hydrocarbon-based solvent.
Examples of hydrocarbon-based solvents include aliphatic hydrocarbon-based solvents such as paraffins, isoparaffins, and naphthenes having about 4 to 20 carbon atoms, monoalkylbenzenes, dialkylbenzenes, trialkylbenzenes, etc. having alkyl groups of about 1 to 20 carbon atoms. Aromatic hydrocarbon solvents such as alkylbenzenes corresponding to alkylbenzenes and corresponding alkylnaphthalenes are preferably used. Also, the alkyl groups in the alkylbenzene and alkylnaphthalene may be linear or branched, and when having two or more alkyl groups in the molecule, they may be the same or different.

The 40° C. kinematic viscosity of the solvent is 0.1 mm ² /s or more and 10.0 mm ² /s or less. If the 40° C. kinematic viscosity is outside the above range, rust resistance and easy degreasing properties may deteriorate, and low-temperature stability and anti-adhesion properties may also deteriorate. From the viewpoint of improving rust resistance and easy degreasing properties, as well as improving low-temperature stability and adhesion prevention properties, it is preferably 0.3 mm ² /s or more, more preferably 0.5 mm ² /s or more, and still more preferably 1 0 mm ² /s or more, and the upper limit is preferably 8.0 mm ² /s or less, more preferably 5.0 mm ² /s or less, and even more preferably 3.0 mm ² /s or less.
As used herein, the 40° C. kinematic viscosity is a value measured using a glass capillary viscometer according to JIS K2283:2000.

The content of component (A) in components (A) to (G) is preferably 50.0 mass from the viewpoint of improving rust resistance and easy degreasing, as well as improving low-temperature stability and adhesion prevention. % or more, more preferably 60.0% by mass or more, and still more preferably 65.0% by mass or more, and the upper limit is preferably 85.0% by mass or less, more preferably 80.0% by mass or less, and still more preferably 75% by mass. 0% by mass or less.

<(B) component: base oil>
The (B) component contained in the rust preventive oil composition of the present embodiment is a base oil having a 40° C. kinematic viscosity of 100.0 mm ² /s or more and 200.0 mm ² /s or less. If the 40° C. kinematic viscosity of component (B) is less than 100.0 ^{mm 2} /s, it is difficult to form an oil film and rust prevention cannot be obtained. When it is used for a metal material having fine irregularities, poor coating on the metal material tends to occur, resulting in a decrease in rust prevention and a decrease in work efficiency due to a decrease in coating performance.
From the viewpoint of mainly improving rust prevention and improving work efficiency by improving coating performance, the 40° C. kinematic viscosity of the base oil of component (B) is preferably 110.0 mm ² /s or more, more preferably 120 0 mm ² /s or more, more preferably 130.0 mm ² /s or more, and the upper limit is preferably 180.0 mm ² /s or less, more preferably 160.0 mm ² /s or less, still more preferably 145.0 mm ² /s or less.

As the base oil of the component (B), any base oil having a kinematic viscosity at 40° C. within the above range can be used without any particular limitation, and mineral oil, synthetic oil and the like can be used. In the present embodiment, mineral oil and synthetic oil can be used alone or in combination of multiple types, and when multiple types of base oils are used, the It suffices that the kinematic viscosity is within the above range, and even if the 40° C. kinematic viscosity is outside the above range as a single substance, it can be used.

As the mineral oil, residual oil obtained by atmospheric distillation of paraffinic crude oil, intermediate crude oil, or naphthenic crude oil, or distillate oil obtained by vacuum distillation of atmospheric distillation residue oil, and these are commonly used. Refined oil obtained by refining according to the method, for example, solvent refined oil, hydrogenated refined oil, deasphalted oil, dewaxed oil, clay treated oil, hydrorefined oil and the like. Mineral oil obtained by isomerizing wax (GTL wax (Gas To Liquids WAX)) produced by the Fischer-Tropsch process or the like is also included.
Synthetic oils include poly-α-olefins, α-olefin copolymers, polyol esters, dibasic acid esters, polybutenes, alkylbenzenes, polyoxyalkylene glycols, polyoxyalkylene glycol esters, polyoxyalkylene glycol ethers, hindered esters. , silicone oil and the like.

In the present embodiment, considering the ease of adjusting the 40° C. kinematic viscosity of the base oil of the component (B), it is preferable to mix and use a plurality of types of base oils with different kinematic viscosities. More specifically, base oil 1 having a 40°C kinematic viscosity of 10.0 mm ² /s or more and 200.0 mm ² /s or less, and 40°C kinematic viscosity of 300.0 mm ² /s or more and 550.0 mm ² /s or less It preferably contains at least one of the base oils 2, and it is more preferable to use a mixture of these base oils 1 and 2 as the component (B).
In this case, the content of base oil 1 in component (B) is preferably 15.0% by mass or more, more preferably 25.0% by mass or more, and still more preferably 35.0% by mass or more, and the upper limit is It is preferably 55.0% by mass or less, more preferably 50.0% by mass or less, and even more preferably 45.0% by mass or less. The content of base oil 2 in component (B) is preferably 45.0% by mass or more, more preferably 50.0% by mass or more, and still more preferably 55.0% by mass or more, and the upper limit is preferably 85% by mass. 0% by mass or less, more preferably 75.0% by mass or less, and even more preferably 65.0% by mass or less.

The content of component (B) in components (A) to (G) is preferably 3.0 mass from the viewpoint of improving rust resistance and easy degreasing, as well as improving low-temperature stability and adhesion prevention. % or more, more preferably 5.0% by mass or more, still more preferably 10.0% by mass or more, and the upper limit is preferably 25.0% by mass or less, more preferably 20.0% by mass or less, and still more preferably 15% by mass. 0% by mass or less.

<(C) Component: Metal sulfonate with a base number of 50 mgKOH/g or less>
The metal sulfonate used as component (C) is a metal salt of various sulfonic acids. If component (C) is not included, excellent degreasing properties cannot be obtained, and in combination with other components, excellent rust prevention and degreasing properties cannot be obtained, and low temperature stability and adhesion prevention properties are not obtained. I can't get it.
As the sulfonic acid of the sulfonate, alkyl It is preferably a sulfonic acid having a phenyl structure (that is, Alkyl-Ph-SO ₃ ^- (Alkyl is an alkyl group and Ph is a benzene ring)) and an alkylnaphthyl structure, and has an alkylphenyl structure. is more preferred. That is, the sulfonic acid is preferably alkylbenzenesulfonic acid or alkylnaphthalenesulfonic acid, more preferably alkylbenzenesulfonic acid.

The number of carbon atoms in the sulfonate is preferably 20 as the total number of carbon atoms per sulfone group, for example, the average number of carbon atoms in the "Alkyl-Ph-" portion contained in each of the alkylphenyl structures (Alkyl-Ph-SO ₃ ⁻ ). Above, it is more preferably 23 or more, still more preferably 25 or more, and the upper limit is preferably 40 or less, more preferably 35 or less, and still more preferably 32 or less. When the number of carbon atoms is within the above range, it mainly improves the easy degreasing property, and by combining with other components, it improves the rust prevention property and the easy degreasing property, and also improves the low temperature stability and the adhesion prevention property. can be done.
In the alkylphenyl structure, the number of alkyl groups bonded to the benzene skeleton may be one, but preferably two or more. Similarly, in the above alkylnaphthyl structure, the number of alkyl groups bonded to the naphthalene skeleton may be one, but preferably two or more.

Examples of metals used in sulfonates include alkali metals such as lithium and sodium, alkaline earth metals such as magnesium, calcium and barium, and zinc. Alkaline earth metals such as magnesium, calcium, and barium are preferable, and calcium and barium are more preferable, from the viewpoint of improving rust resistance and easy degreasing, as well as improving low-temperature stability and adhesion prevention, depending on the combination. Calcium is more preferred.
That is, in the present embodiment, the metal sulfonate of the component (C) is preferably an alkaline earth metal sulfonate, and more preferably a calcium sulfonate.

The metal sulfonate of component (C) has a base number of 50 mgKOH/g or less. If the base number exceeds 50 mgKOH/g, excellent degreasing properties cannot be obtained, and in combination with other components, excellent rust prevention properties and degreasing properties cannot be obtained, and low-temperature stability cannot be obtained. and anti-adhesion properties cannot be obtained.
The base number of the metal sulfonate of the component (C) mainly improves the easy degreasing property, and in combination with other components, it improves both the rust prevention property and the easy degreasing property, and also improves the low-temperature stability and adhesion prevention property. is preferably 40 mgKOH/g or less, more preferably 30 mgKOH/g or less, still more preferably 25 mgKOH/g or less, still more preferably 15 mgKOH/g or less, and the lower limit is not particularly limited, but usually 0 mgKOH/g It may be larger than g, and is usually 1 mgKOH/g or more. As can be seen from these base numbers, the metal sulfonate of the component (C) is a neutral metal sulfonate that is generally less than 30 mgKOH/g, and a basic metal sulfonate that is about 30 mgKOH/g or more. It can be said that it is selected from basic metal sulfonates up to g or less. In the present specification, the base number is JIS K2501: 2003 "Petroleum products and lubricating oils-neutralization value test method""9. Potentiometric titration method (base number / perchloric acid method)" It is measured in accordance with. It is.
In this embodiment, as the component (C), the above metal sulfonates may be used singly or in combination.

The metal content in the metal sulfonate of the component (C) mainly improves the easy degreasing property, and by combining with other components, it improves the easy degreasing property as well as the rust prevention property, and also has low temperature stability and adhesion prevention property. is preferably 1.0% by mass or more, more preferably 1.5% by mass or more, still more preferably 2.0% by mass or more, and the upper limit is preferably 10.0% by mass or less, more preferably is 8.0% by mass or less, more preferably 5.0% by mass or less.

The content of component (C) in terms of metal in components (A) to (G) mainly improves easy degreasing, and when combined with other components, improves rust prevention and easy degreasing, And from the viewpoint of improving low-temperature stability and adhesion prevention, it is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, and still more preferably 0.03% by mass or more, and the upper limit is preferably 1 0% by mass or less, more preferably 0.5% by mass or less, and even more preferably 0.2% by mass or less.
From the same point of view, the content of component (C) in components (A) to (G) is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, and even more preferably 1.5% by mass or more, more preferably 2.0% by mass or more, and the upper limit is preferably 10.0% by mass or less, more preferably 7.5% by mass or less, and even more preferably 5.5% by mass or less. is.

<Component (D): Overbased metal sulfonate with a base value of 300 mgKOH/g or more>
The metal sulfonate used as component (D) is the same metal salt of various sulfonic acids as the metal sulfonate of component (C). If component (D) is not included, excellent degreasing properties cannot be obtained, and in combination with other components, excellent rust prevention and degreasing properties cannot be obtained, and low temperature stability and adhesion prevention properties are not obtained. I can't get it.
As the sulfonic acid of the sulfonate, alkyl It is preferably a sulfonic acid having a phenyl structure (that is, Alkyl-Ph-SO ₃ ^- (Alkyl is an alkyl group and Ph is a benzene ring)) and an alkylnaphthyl structure, and has an alkylphenyl structure. is more preferred. That is, the sulfonic acid is preferably alkylbenzenesulfonic acid or alkylnaphthalenesulfonic acid, more preferably alkylbenzenesulfonic acid.

The number of carbon atoms in the sulfonate is preferably 20 as the total number of carbon atoms per sulfone group, for example, the average number of carbon atoms in the "Alkyl-Ph-" portion contained in each of the alkylphenyl structures (Alkyl-Ph-SO ₃ ⁻ ). Above, it is more preferably 23 or more, still more preferably 25 or more, and the upper limit is preferably 40 or less, more preferably 35 or less, and still more preferably 32 or less. When the number of carbon atoms is within the above range, it mainly improves the easy degreasing property, and by combining with other components, it improves the rust prevention property and the easy degreasing property, and also improves the low temperature stability and the adhesion prevention property. can be done.
In the alkylphenyl structure, the number of alkyl groups bonded to the benzene skeleton may be one, but preferably two or more. Similarly, in the above alkylnaphthyl structure, the number of alkyl groups bonded to the naphthalene skeleton may be one, but preferably two or more.

As the metal, alkaline earth metals such as magnesium, calcium, and barium are preferred, as with the component (C) above, from the viewpoint of mainly improving the easy degreasing property. Among them, calcium and barium are more preferred, and calcium is even more preferred. The same is true.
That is, in the present embodiment, overbased alkaline earth metal sulfonate is preferable as overbased metal sulfonate of component (D), and overbased calcium sulfonate is more preferable.

The metal sulfonate of component (D) is called an overbased metal sulfonate having a base number of 300 mgKOH/g or more. If the base number is less than 300 mgKOH/g, excellent degreasing properties cannot be obtained, and in combination with other components, both excellent rust prevention properties and degreasing properties cannot be obtained, and low-temperature stability and adhesion cannot be obtained. Preventive properties cannot be obtained.
The base value of the overbased metal sulfonate of component (D) mainly improves the easy degreasing property, and when combined with other components, it improves both the rust prevention property and the easy degreasing property, as well as low-temperature stability and adhesion prevention. From the viewpoint of improving the property, it is preferably 320 mgKOH / g or more, more preferably 350 mgKOH / g or more, still more preferably 400 mgKOH / g or more, and the upper limit is preferably 600 mgKOH / g or less, more preferably 550 mgKOH / g or less, and further It is preferably 500 mgKOH/g or less, more preferably 450 mgKOH/g or less.
In this embodiment, as the component (D), the above metal sulfonates may be used singly or in combination.

The metal content in the metal sulfonate of the component (D) mainly improves the easy degreasing property, and by combining with other components, it improves the easy degreasing property as well as the rust prevention property, and also has low temperature stability and adhesion prevention property. is preferably 4.5% by mass or more, more preferably 10.0% by mass or more, still more preferably 12.5% by mass or more, and the upper limit is preferably 30.0% by mass or less, more preferably is 25.0% by mass or less, more preferably 20.0% by mass or less.

The content of component (D) in terms of metal in components (A) to (G) mainly improves easy degreasing, and in combination with other components, improves rust prevention and easy degreasing, And from the viewpoint of improving low temperature stability and adhesion prevention, it is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, still more preferably 0.3% by mass or more, and the upper limit is preferably 2 0.5% by mass or less, more preferably 2.0% by mass or less, and even more preferably 1.5% by mass or less.

The content of component (D) in components (A) to (G) is 2.6% by mass or more. If the content of component (D) is less than 2.6% by mass, excellent degreasing properties cannot be obtained, and in combination with other components, both excellent rust prevention properties and degreasing properties cannot be obtained. Also, low temperature stability and anti-adhesive properties are not obtained.
The content of component (D) in components (A) to (G) mainly improves the easy degreasing property. From the viewpoint of improving the properties and antiadhesiveness, it is preferably 2.7% by mass or more, more preferably 2.8% by mass or more, still more preferably 3.0% by mass or more, and the upper limit is preferably 10.0% by mass. % or less, more preferably 8.0 mass % or less, and still more preferably 6.5 mass % or less.

<(E) component: oxidized wax>
The oxidized wax used as component (E) is an oxidized wax having an acid value of 10 mgKOH/g or more. If component (E) is not included, excellent degreasing properties cannot be obtained, and particularly in relation to components (F) and (G), which will be described later, excellent low-temperature stability and anti-adhesion properties cannot be obtained. Sometimes.
Examples of the oxidized wax include those obtained by oxidizing various waxes such as paraffin wax, microcrystalline wax, and petrolatum obtained in the refining of petroleum fractions. Oxidized paraffin wax is preferable from the viewpoint of improving rust resistance and easy degreasing property, as well as improving low-temperature stability and adhesion prevention property.

The acid value of the oxidized wax is 10 mgKOH/g or more. If it is less than 10 mgKOH/g, excellent easy degreasing properties cannot be obtained, and especially in relation to components (F) and (G) described below, excellent low-temperature stability and adhesion prevention properties cannot be obtained. There is
The acid value of the oxidized wax is preferable from the viewpoint of mainly improving the easy degreasing property, improving the rust prevention property and the easy degreasing property, and improving the low temperature stability and adhesion prevention property by combining with other components. is 16 mgKOH/g or more, more preferably 18 mgKOH/g or more, more preferably 20 mgKOH/g or more, and the upper limit is preferably 150 mgKOH/g or less, more preferably 110 mgKOH/g or less, and still more preferably 50 mgKOH/g or less. . As used herein, the acid value is measured according to JIS K2501:2003 “Petroleum products and lubricating oils—neutralization value test method”, “7. Potentiometric titration method (acid value)”.

The melting point of the oxidized wax is preferably 25° C. or higher, more preferably 28° C. or higher, still more preferably 30° C. or higher, and the upper limit is preferably 80° C. or lower, more preferably 70° C. or lower, further preferably 60° C. or lower. be. When the melting point of the oxidized wax is 30° C. or higher, the rust resistance, low-temperature stability and adhesion prevention properties are improved, and when it is 80° C. or lower, precipitation of wax components can be further suppressed. As used herein, the melting point of wax is measured according to JIS K0064:1992 "Measuring method for melting point and melting range of chemical products".
In this embodiment, as the component (E), the above oxidized waxes may be used singly or in combination.

In this embodiment, it is preferable not to contain waxes with an acid value of less than 10 mgKOH/g. When such a wax is contained, the low-temperature stability and anti-adhesion properties may deteriorate, especially in relation to the components (F) and (G) described below. In the present specification, "does not contain" means not only literally "does not contain" at all, but also contains to an extent that does not affect the effect of the invention, for example, usually 1.0% by mass or less, preferably 0.5 It includes the case where it is contained in an amount of 0.3% by mass or less, more preferably 0.1% by mass or less, that is, "substantially does not contain".

The content of component (E) in components (A) to (G) is 1.5% by mass or more. If it is less than 1.5% by mass, excellent easy degreasing properties cannot be obtained, and in particular, in relation to components (F) and (G) described below, excellent low-temperature stability and adhesion prevention properties can be obtained. sometimes not.
The content of component (E) in components (A) to (G) mainly improves the easy degreasing property, and in combination with other components, improves both the rust prevention property and the easy degreasing property, and is stable at low temperatures. From the viewpoint of improving the properties and antiadhesiveness, it is preferably 1.8% by mass or more, more preferably 2.0% by mass or more, still more preferably 2.5% by mass or more, and the upper limit is preferably 10.0% by mass. % or less, more preferably 7.5 mass % or less, and still more preferably 4.5 mass % or less.

<(F) Component: Full ester of polyhydric alcohol>
The polyhydric alcohol full ester used as component (F) is an ester in which all the hydroxyl groups in the polyhydric alcohol are esterified and no hydroxyl groups remain in the molecule. If the component (F) is not included, excellent rust prevention and degreasing properties cannot be obtained, and in particular, due to the relationship between the component (E) and the component (G) described below, excellent low-temperature stability and adhesion prevention are obtained. It may not be possible to obtain sexuality.
As the polyhydric alcohol in the full ester of polyhydric alcohol, trimethylolpropane, trimethylolpropane, from the viewpoint of improving rust prevention and easy degreasing, and improving low temperature stability and adhesion prevention in relation to other components. Pentaerythritol and sorbitan are preferred, and pentaerythritol is more preferred. In this embodiment, the polyhydric alcohols used in the full ester may be used singly or in combination. In addition, the polyhydric alcohol in the polyhydric alcohol full ester may be the same as or different from the polyhydric alcohol in the polyhydric alcohol partial ester. preferably.

In the present embodiment, the full ester of a polyhydric alcohol is more specific from the viewpoint of improving rust resistance and easy degreasing, and improving low-temperature stability and adhesion prevention in relation to other components. Preferred examples include full esters of polyhydric alcohols such as the above polyhydric alcohols such as trimethylolpropane, pentaerythritol and sorbitan, and fatty acids having 8 to 24 carbon atoms.
From the same point of view, the fatty acid is preferably a monocarboxylic acid, and may be saturated or unsaturated, and may be linear or branched. In addition, the carbon number of the fatty acid is more preferably 10 or more, more preferably 12 or more, and the upper limit is more preferably 20 or less, still more preferably 18 or less.

Examples of fatty acids include caprylic acid, 2-ethylhexanoic acid, pelargonic acid, isononanoic acid, capric acid, isodecanoic acid, undecanoic acid, lauric acid, isolauric acid, tridecylic acid, myristic acid, isomyristic acid, pentadecanoic acid, and palmitic acid. acid, isopalmitic acid, stearic acid, isostearic acid, arachidic acid, behenic acid, undecenoic acid, cis-4-tetradecenoic acid, cis-5-tetradecenoic acid, cis-9-tetradecenoic acid, cis-6-hexadecenoic acid, palmitolein acid, cis-6-octadecenoic acid, oleic acid, trans-9-octadecenoic acid, cis-11-octadecenoic acid, trans-11-octadecenoic acid and the like. Among them, oleic acid is preferable from the viewpoint of improving rust resistance and easy degreasing, and also improving low-temperature stability and adhesion prevention in relation to other components.
Fatty acids may be used singly or in combination.
The purity of the (F) component full ester is usually 80% or more.

The content of component (F) in components (A) to (G) is 2.6% by mass or more. If it is less than 2.6% by mass, excellent rust prevention and easy degreasing properties cannot be obtained, and in particular, the relationship between the above component (E) and the component (G) described later results in excellent low temperature stability and adhesion. Preventive properties cannot be obtained.
Content of component (F) in components (A) to (G) from the viewpoint of improving rust resistance and easy degreasing, and also improving low-temperature stability and adhesion prevention in relation to other components. is preferably 3.0% by mass or more, more preferably 4.0% by mass or more, and still more preferably 4.5% by mass or more, and the upper limit is preferably 9.0% by mass or less, more preferably 8.0% by mass. % by mass or less, more preferably 7.0% by mass or less, and even more preferably 6.0% by mass or less.

<(G) component: partial ester of polyhydric alcohol>
The polyhydric alcohol partial ester used as component (G) is an ester in which at least one hydroxyl group in the polyhydric alcohol is not esterified and remains in the form of a hydroxyl group. If the component (G) is not included, excellent antirust properties cannot be obtained. Also, if the component (G) is excessively contained, excellent degreasing properties cannot be obtained, and due to the relationship between the components (E) and (F), excellent low-temperature stability and adhesion prevention properties can be obtained. do not have.
As the polyhydric alcohol in the polyhydric alcohol partial ester, trimethylolpropane, trimethylolpropane, and trimethylolpropane, from the viewpoint of improving rust resistance and easy degreasing properties, and also improving low-temperature stability and adhesion prevention properties in relation to other components. Pentaerythritol and sorbitan are preferred, and sorbitan is more preferred. In this embodiment, the polyhydric alcohol used for the partial ester may be used singly or in combination. In addition, the polyhydric alcohol in the polyhydric alcohol partial ester may be the same as or different from the polyhydric alcohol in the polyhydric alcohol full ester. preferably.

In the present embodiment, the polyhydric alcohol partial ester is more specific from the viewpoint of improving rust resistance and easy degreasing property, and improving low-temperature stability and adhesion prevention property in relation to other components. Partial esters of polyhydric alcohols such as the above polyhydric alcohols such as trimethylolpropane, pentaerythritol and sorbitan with fatty acids having 8 to 24 carbon atoms are preferred.
From the same point of view, the fatty acid is preferably a monocarboxylic acid, and may be saturated or unsaturated, and may be linear or branched. In addition, the carbon number of the fatty acid is more preferably 10 or more, more preferably 12 or more, and the upper limit is more preferably 20 or less, still more preferably 18 or less. Examples of such a fatty acid include those exemplified as the fatty acid that can be used in the partial ester of component (E), and oleic acid is preferred.
The purity of the partial ester of component (G) is usually 90% or more.

The content of component (G) in components (A) to (G) is 0.5% by mass or more and 4.5% by mass or less. If it is less than 0.5% by mass, excellent rust resistance cannot be obtained, and if it exceeds 4.5% by mass, excellent degreasing properties cannot be obtained. ) component does not provide excellent low temperature stability and anti-adhesive properties.
The content of component (G) in components (A) to (G) is from the viewpoint of improving rust resistance and easy degreasing, and improving low-temperature stability and adhesion prevention in relation to other components. Therefore, it is preferably 1.0% by mass or more, more preferably 1.5% by mass or more, and still more preferably 2.0% by mass or more, and the upper limit is preferably 4.1% by mass or less, more preferably 3.5% by mass. % by mass or less, more preferably 3.0% by mass or less.

(Other ingredients)
The rust preventive oil composition of the present embodiment contains the above components (A) to (G), may consist of these components (A) to (G), or may consist of these components (A) to (G). (G) In addition to the component, other components may be contained. Specific examples include additives other than the above components (C) to (G).

Examples of additives other than the above components (C) to (G) include antioxidants, corrosion inhibitors, pour point depressants, and the like.
Antioxidants include phenolic antioxidants such as 2,6-di-t-butylphenol and 2,6-di-t-butyl-p-cresol, and amine-based antioxidants such as alkylated diphenylamine and phenyl-α-naphthylamine. Antioxidants are included.
Examples of corrosion inhibitors include benzotriazole-based compounds, tolyltriazole-based compounds, imidazole-based compounds, and pyrimidine-based compounds. Examples of pour point depressants include ethylene-vinyl acetate copolymers, condensates of chlorinated paraffin and naphthalene, condensates of chlorinated paraffin and phenol, and polymers such as polymethacrylate and polyalkylstyrene. .

The total content of other components in the rust preventive oil composition is preferably 20.0% by mass or less, more preferably 0.1 to 10.0% by mass, and still more preferably 0.2 to 5%, based on the total amount of the composition. .0% by mass. That is, the total content of components (A) to (G) in the rust preventive oil composition is preferably 80.0% by mass or more, more preferably 90.0% by mass or more, and still more preferably 95.0% by mass or more. The upper limit is preferably 99.9% by mass or less, more preferably 99.8% by mass or less.

(Various properties of rust preventive oil composition)
The 40° C. kinematic viscosity of the rust preventive oil composition of the present embodiment is determined from the viewpoint of improving rust prevention and easy degreasing properties, improving low-temperature fluidity and adhesion prevention properties, and further ensuring coating performance, handleability, etc. , preferably 1.0 mm ² /s or more, more preferably 1.5 mm ² /s or more, still more preferably 2.0 mm ² /s or more, and the upper limit is preferably 5.0 mm ² /s or less, more preferably It is 4.5 mm ² /s or less, more preferably 4.0 mm ² /s or less.

The flash point of the rust preventive oil composition of the present embodiment is preferably 50°C or higher, more preferably 55°C or higher, and still more preferably 60°C or higher, and the upper limit is preferably 300°C or lower, more preferably 250°C. 200° C. or less, more preferably 200° C. or less. When the flash point is within the above range, handling becomes easier, and rust prevention and easy degreasing properties tend to be improved. As used herein, flash point is a value measured according to the method described in JIS K2265:2007.

In the rust preventive oil composition of the present embodiment, regarding the contents of the (F) component and the (G) component, the mass ratio of the (F) component and the (G) component ([(F)/(G)]) is From the viewpoint of improving rust resistance and easy degreasing, and improving low temperature stability and adhesion prevention, it is preferably more than 0.58, more preferably 0.75 or more, and still more preferably 1.5 or more, The upper limit is preferably 5.0 or less, more preferably 4.0 or less, and even more preferably 3.5 or less.

In the rust preventive oil composition of the present embodiment, regarding the contents of the (D) component and the (E) component, the mass ratio ([(E)/(D)]) of the (E) component and the (D) component is It is preferably 0.3 or more, more preferably 0.4 or more, still more preferably 0.5 or more, and the upper limit is preferably 1.0 or less, more preferably 0.9 or less, and still more preferably 0.7 or less. be.
Among components (A) to (G), component (D) and component (E) are components that easily react with each other to produce a reaction product. It does not affect the effects of the invention, that is, the expression of rust prevention, easy degreasing, low-temperature fluidity, and anti-adhesion properties. Moreover, in the present embodiment, when the above mass ratio is used, it is particularly effective in improving rust resistance and easy degreasing.

<Method for using rust preventive oil composition and method for processing metal material>
The rust preventive oil composition of this embodiment is used by applying it to the surface of a metal material. By applying the rust preventive oil composition of the present embodiment to a metal surface, a coating is formed on the surface of the metal material, and the formation of the coating can prevent the generation of rust or the like on the surface of the metal material. Moreover, since it has excellent easy degreasing property, it becomes possible to efficiently process and manufacture metal materials. That is, it can be said that the rust preventive oil composition of the present embodiment is suitably used for processing and manufacturing metal materials.
The application may be performed by immersing the metal material in the rust preventive oil composition, or by spraying the rust preventive oil composition onto the metal material, or by other various coating methods. Yes and preferable.

The metal material can be processed using a water-based working liquid, or washed with an alkaline cleaning liquid or the like, and then the rust preventive oil composition can be applied to the surface of the metal material.
The metal for which the rust preventive oil composition is used is preferably a metal containing iron such as pure iron, steel, cast steel, alloy steel, carbon steel, pig iron, cast iron, etc. Other metals can also be used.
The rust preventive oil composition of the present embodiment can be used without any particular limitation as long as it is used for purposes requiring rust prevention. For example, it is suitably used for rust prevention between processes and before and after shipment.

When a rust preventive oil composition is used, it may be diluted with the above hydrocarbon solvent if necessary. In that case, the content of the rust preventive oil composition in the rust preventive oil composition diluent may be appropriately adjusted as desired, and is not particularly limited. In consideration of properties, anti-adhesion properties, handleability, etc., the amount is usually about 10.0% by mass to 50.0% by mass.
From the same point of view, the 40° C. kinematic viscosity of the diluted rust preventive oil composition is preferably 0.5 mm ² /s or more, more preferably 0.75 mm ² /s or more, and still more preferably It is 1.0 mm ² /s or more, and the upper limit is preferably 4.0 mm ² /s or less, more preferably 3.5 mm ² /s or less, and still more preferably 3.0 mm ² /s or less.

<Method for producing rust preventive oil composition>
In the method for producing the rust preventive oil composition of the present embodiment, the following components (A) to (G) are added to the total amount of the components (A) to (G), the (D) component, the (E) component, and the (F ) component and (G) component content is 2.6% by mass or more, 1.5% by mass or more, 2.6% by mass or more, and 0.5% by mass or more and 4.5% by mass or less It is compounded.
(A) Solvent with kinematic viscosity at 40°C of 0.1 mm ² /s or more and 10.0 mm ² /s or less (B) Base oil with kinematic viscosity at 40°C of 100.0 mm ² /s or more and 200.0 mm ² /s or less ( C) Metal sulfonates with a base value of 50 mgKOH/g or less (D) Overbased metal sulfonates with a base value of 300 mgKOH/g or more (E) Waxes with an acid value of 10 mgKOH/g or more (F) Full esters of polyhydric alcohols (G) Poly partial esters of alcohols

In this production method, the above components (A) to (G), their blending amounts, other components and their blending amounts, and other details are the same as those described for the rust preventive oil composition of the present embodiment. Therefore, its description is omitted.
The order of blending is not particularly limited, and for example, the component (A) solvent, the (B) component base oil, and the (C) to (G) components may be sequentially blended, or (B) to Component (G) or a premix of components (C) to (G) may be blended. In addition, the (D) component and the (E) component may react with each other, but after mixing the (D) component and the (E) component in advance, It may be blended in the base oil.

EXAMPLES The present invention will be described in more detail below with reference to examples, but the present invention is not limited by these examples.

The measuring method and evaluation method in the present invention are as follows.
(1) Kinematic viscosity Kinematic viscosity was measured using a glass capillary viscometer according to JIS K2283:2000.
(2) Base number The base number was measured according to JIS K2501:2003 "Petroleum products and lubricating oils-neutralization number test method", "9. Potentiometric titration method (base number/perchloric acid method)".
(3) Acid value The acid value was measured according to JIS K2501:2003 “Petroleum products and lubricating oils-neutralization value test method”, “7. Potentiometric titration method (acid value)”.

(4) Evaluation of rust resistance (salt water resistance)
The oil compositions of Examples and Comparative Examples were subjected to a neutral salt spray test method (48 hours and 60 hours) in accordance with JIS K2246:2017, and evaluated based on the following evaluation criteria.
A: Rust grade A at 48 hours and rust grade B at 60 hours.
B: Rust grade A at 48 hours and rust grade C at 60 hours.
C: It was the rust grade B grade in 48 hours.
(5) Evaluation of easy degreasing After immersing commercially available SPCC-SD in the oil compositions of Examples and Comparative Examples and draining the oil for 24 hours, it was immersed in a degreasing liquid for 15 seconds with shaking, and then water. It was washed with water by immersion for 15 seconds, and the water-wet area was confirmed after pulling up from the water immersion. The degreasing time until the wetted area reached 100% was measured by repeating the above-described operation from rocking immersion to confirmation of the wetted area, and evaluated according to the following evaluation criteria. Degreasing was performed by using a commercially available alkaline cleaning liquid (pH 12 to 13) as the degreasing liquid at a temperature of 40° C. without stirring.
A: It was 60 seconds or less.
B: more than 60 seconds and 75 seconds or less C: more than 75 seconds.
(6) Evaluation of low temperature stability The oil compositions of Examples and Comparative Examples were allowed to stand in an environment of -10 ° C. for 5 days, and the state of precipitation when the temperature returned to 23 ° C. was visually confirmed. It was evaluated according to the evaluation criteria.
A: Precipitation was not confirmed at all, or was confirmed very slightly.
B: Precipitation was slightly confirmed.
C: Significant precipitation was confirmed.
(7) Evaluation of anti-adhesion property A commercially available SPCC-SD was immersed in the oil compositions of Examples and Comparative Examples, and after holding the SPCC-SD plate vertically at 23 ° C. for 24 hours, the plate unit The amount (g/cm ² ) of the remaining oil composition adhered per unit was measured and evaluated according to the following evaluation criteria. The smaller the adhesion amount of the oil composition, the lower the adhesion amount when applied to the surface of the metal material, indicating that the amount used can be reduced and the adhesion prevention property is excellent.
A: The adhesion amount was 2.0 (g/cm ² ) or less.
B: The adhesion amount was more than 2.0 (g/cm ² ) and 2.5 (g/cm ² ) or less.
C: The adhesion amount was over 2.5 (g/cm ² ).

[Examples 1 to 15, Comparative Examples 1 to 10]
Rust preventive oil compositions were prepared according to the formulations shown in Table 1, and the rust preventive properties, easy degreasing properties, low temperature stability and adhesion prevention properties of each rust preventive oil composition were evaluated by the methods described above.

＊１，（Ａ）～（Ｇ）成分の合計量に対する含有量である。
上記表における各成分の詳細は以下のとおりである。
（Ａ）溶剤：４０℃動粘度１．３ｍｍ^２／ｓの炭化水素系溶剤（イソパラフィン系）
（Ｂ）基油１：４０℃動粘度２９．６ｍｍ^２／ｓの１５０Ｎ鉱油
（Ａ）基油２：４０℃動粘度４９８．０ｍｍ^２／ｓのブライトストック基油
（Ｃ）中性Ｃａスルフォネート１：塩基価：２０ｍｇＫＯＨ／ｇ、Ｃａ含有量：２．５質量％、スルホン酸基にアルキルフェニル構造を含む。
（Ｃ）中性Ｃａスルフォネート２：塩基価：１３ｍｇＫＯＨ／ｇ、Ｃａ含有量：２．６質量％、スルホン酸基にアルキルフェニル構造を含む。
（Ｃ）中性Ｃａスルフォネート３：塩基価：１３ｍｇＫＯＨ／ｇ、Ｃａ含有量：２．３質量％、スルホン酸基にアルキルフェニル構造を含む。
（Ｄ）過塩基性Ｃａスルフォネート１：塩基価：４３２ｍｇＫＯＨ／ｇ、Ｃａ含有量：１５．９質量％、スルホン酸基にアルキルフェニル構造を含む。
（Ｄ）過塩基性Ｃａスルフォネート２：塩基価：４２９ｍｇＫＯＨ／ｇ、Ｃａ含有量：１５．９質量％、スルホン酸基にアルキルフェニル構造を含む。
（Ｅ）ワックス１：酸化ワックス（酸価：２０ｍｇＫＯＨ／ｇ、パラフィンワックスベース、融点：３３．６℃）
（Ｅ）ワックス２：酸化ワックス（酸価：２９ｍｇＫＯＨ／ｇ、パラフィンワックスベース、融点：３４．０℃）
（Ｅ）ワックス３：酸化ワックス（酸価：１０４ｍｇＫＯＨ／ｇ、パラフィンワックスベース、融点：３５．０℃）
（Ｆ）フルエステル：ペンタエリスリトールテトラオレート
（Ｇ）部分エステル：ソルビタンセスキオレート
・ワックス４：ワックス（酸価：０．１ｍｇＫＯＨ／ｇ以下、パラフィンワックス、融点：４８℃）
・添加剤：アミン系酸化防止剤０．３質量％、ベンゾトリアゾール系腐食防止剤０．１質量％含有

*1, Content relative to the total amount of components (A) to (G).
Details of each component in the above table are as follows.
(A) Solvent: Hydrocarbon-based solvent (isoparaffin-based) with a kinematic viscosity of 1.3 mm ² /s at 40°C
(B) Base oil 1: 150N mineral oil having a kinematic viscosity of 29.6 mm ² /s at 40°C (A) Base oil 2: Bright stock base oil having a kinematic viscosity of 498.0 mm ² /s at 40°C (C) Neutral Ca sulfonate 1 : Base value: 20 mgKOH/g, Ca content: 2.5% by mass, sulfonic acid group containing an alkylphenyl structure.
(C) Neutral Ca sulfonate 2: Base value: 13 mgKOH/g, Ca content: 2.6% by mass, sulfonic acid group containing an alkylphenyl structure.
(C) Neutral Ca sulfonate 3: Base value: 13 mgKOH/g, Ca content: 2.3% by mass, sulfonic acid groups containing an alkylphenyl structure.
(D) Overbased Ca sulfonate 1: base number: 432 mgKOH/g, Ca content: 15.9% by mass, containing an alkylphenyl structure in the sulfonic acid group.
(D) Overbased Ca sulfonate 2: Base value: 429 mgKOH/g, Ca content: 15.9% by mass, sulfonic acid group containing an alkylphenyl structure.
(E) Wax 1: Oxidized wax (acid value: 20 mgKOH/g, paraffin wax base, melting point: 33.6°C)
(E) Wax 2: Oxidized wax (acid value: 29 mgKOH/g, paraffin wax base, melting point: 34.0°C)
(E) Wax 3: Oxidized wax (acid value: 104 mgKOH/g, paraffin wax base, melting point: 35.0°C)
(F) full ester: pentaerythritol tetraoleate (G) partial ester: sorbitan sesquiolate wax 4: wax (acid value: 0.1 mgKOH/g or less, paraffin wax, melting point: 48°C)
・Additives: Contains 0.3% by mass of amine-based antioxidant and 0.1% by mass of benzotriazole-based corrosion inhibitor

As shown in the examples, the rust preventive oil composition containing the components (A) to (G) has excellent rust prevention and easy degreasing properties, and also has excellent low temperature stability and adhesion prevention properties. It was confirmed that
On the other hand, the oil compositions of Comparative Examples 1 and 4, which do not contain component (E) or contain less component (E), are inferior in terms of easy degreasing, and the oil compositions of Comparative Examples 2 and 4, which do not contain component (C), are inferior in terms of easy degreasing. The composition was inferior in terms of easy degreasing properties, and the oil composition of Comparative Example 3, which contained a small amount of component (D), was inferior in terms of easy degreasing properties.
The oil composition of Comparative Example 5, which does not contain component (G), is inferior in terms of rust prevention, and the oil composition of Comparative Example 6, which contains component (G) in excess, is inferior in terms of easy degreasing. Met.
The oil compositions of Comparative Examples 7 to 10, which do not contain component (F) or contain it in a small amount, are inferior in any of rust prevention, easy degreasing, low temperature stability, and adhesion prevention. rice field. Also, by comparing Comparative Examples 9 and 10, it can be seen that the low-temperature stability and anti-adhesion properties may be remarkably lowered when the wax having an acid value of less than 10 mgKOH/g is included.
As described above, from the content of the comparative example, even if any component is missing, if the component (D), component (E), component (F) and component (G) are not contained in a predetermined content, It was confirmed that excellent rust prevention and easy degreasing properties, as well as excellent low-temperature stability and anti-adhesion properties could not be obtained.

Claims (15)

Contains the following components (A) to (G), and the content of the (D) component, (E) component, (F) component, and (G) component with respect to the total amount of the (A) to (G) components is 2.6% by mass or more, 1.5% by mass or more, 2.6% by mass or more, and 0.5% by mass or more and 4.5% by mass or less.
(A) Solvent with kinematic viscosity at 40°C of 0.1 mm ² /s or more and 10.0 mm ² /s or less (B) Base oil with kinematic viscosity at 40°C of 100.0 mm ² /s or more and 200.0 mm ² /s or less ( C) Metal sulfonates with a base value of 50 mgKOH/g or less (D) Overbased metal sulfonates with a base value of 300 mgKOH/g or more (E) Waxes with an acid value of 10 mgKOH/g or more (F) Full esters of polyhydric alcohols (G) Poly partial esters of alcohols 2. The rust preventive oil composition according to claim 1, wherein said component (A) is a hydrocarbon solvent. The rust preventive oil composition according to Claim 1 or 2, wherein the component (B) contains a base oil 1 having a kinematic viscosity at 40°C of 10.0 ^mm2 /s or more and 200.0 ^mm2 /s or less. The rust preventive oil composition according to Claim 3, wherein the component (B) further contains a base oil 2 having a kinematic viscosity at 40°C of 300.0 ^mm2 /s or more and 550.0 ^mm2 /s or less. The rust preventive oil composition according to any one of claims 1 to 4, wherein the component (C) is an alkaline earth metal sulfonate. The rust preventive oil composition according to any one of claims 1 to 5, wherein the component (D) is an overbased alkaline earth metal sulfonate. The rust preventive oil composition according to any one of claims 1 to 6, wherein the component (E) is an oxidized paraffin wax. The content of the component (A) with respect to the total amount of the components (A) to (G) is 50.0% by mass or more and 85.0% by mass or less, according to any one of claims 1 to 7. Rust preventive oil composition. The content of the component (B) with respect to the total amount of the components (A) to (G) is 3.0% by mass or more and 25.0% by mass or less, according to any one of claims 1 to 8. Rust preventive oil composition. 10. Any one of claims 1 to 9, wherein the content of component (C) in terms of metal with respect to the total amount of components (A) to (G) is 0.01% by mass or more and 1.0% by mass or less. The rust preventive oil composition described in . 11. Any one of claims 1 to 10, wherein the content of component (D) in terms of metal with respect to the total amount of components (A) to (G) is 0.1% by mass or more and 2.5% by mass or less. The rust preventive oil composition described in . The mass ratio ([(F)/(G)]) of the component (F) and the component (G) is more than 0.58 and 5.0 or less, according to any one of claims 1 to 11. Rust preventive oil composition. The rust preventive oil composition according to any one of claims 1 to 12, wherein the total content of the components (A) to (G) based on the total amount of the composition is 80.0% by mass or more. The rust preventive oil composition according to any one of claims 1 to 13, which has a 40°C kinematic viscosity of 1.0 mm ² /s or more and 5.0 mm ² /s or less. The contents of the following components (A) to (G), the (D) component, the (E) component, the (F) component, and the (G) component with respect to the total amount of the (A) to (G) components, respectively A method for producing a rust-preventing oil composition, which is blended so as to be 2.6% by mass or more, 1.5% by mass or more, 2.6% by mass or more, and 0.5% by mass or more and 4.5% by mass or less.
(A) Solvent with kinematic viscosity at 40°C of 0.1 mm ² /s or more and 10.0 mm ² /s or less (B) Base oil with kinematic viscosity at 40°C of 100.0 mm ² /s or more and 200.0 mm ² /s or less ( C) Metal sulfonates with a base value of 50 mgKOH/g or less (D) Overbased metal sulfonates with a base value of 300 mgKOH/g or more (E) Waxes with an acid value of 10 mgKOH/g or more (F) Full esters of polyhydric alcohols (G) Poly partial esters of alcohols