Rust preventive oil composition and method for producing same

Abstract

Provided is an anti-rust oil composition that contains: component (A-1), which is a specific solvent; component (A-2), which is a specific base oil; component (B), which is a specific alkylene glycol; component (C), which is one selected from metal sulfonates, metal salicylates, and metal phenates having a base value of 50 mg KOH / g or lower; component (D), which is a specific wax; component (E), which is one selected from metal sulfonates, metal salicylates, and metal phenates having a base value of 100 mg KOH / g or greater; and component (F), which is a full ester of a specific polyhydric alcohol, the component (B) content being 2.5 mass% or greater relative to the total amount of the components (A-1), (A-2), and (B)-(F), whereby the anti-rust oil composition has excellent anti-rust properties, water displacement properties, and water separation properties. Also provided is a method for producing the anti-rust oil composition.

Description

[Technical Field]

[0001] The present invention relates to a rust preventive oil composition and a method for producing the same. [Background technology]

[0002] It is common for metal materials made of metals such as iron to have rust-preventive oil applied to their surfaces to prevent rust or stains from forming on the metal surfaces during the manufacturing process or after product shipment.Meanwhile, metal materials are often processed using processing oils, such as cutting and pressing, and are sometimes cleaned with cleaning fluids during manufacturing. Rust-preventive oils are sometimes applied as a coating to the surface of metal materials after they have been processed in various ways, cleaned, etc. When the processing oil, cleaning solution, etc. is water-based, the rust-preventive oil must be applied to the metal surface after the processing oil or cleaning solution has been removed from the metal surface in order to prevent rust from occurring due to the processing oil or cleaning solution.

[0003] Therefore, when applying a coating of rust-preventive oil after using a water-based machining fluid, an oil agent with excellent water-displacing properties is usually applied to remove the moisture, and then the rust-preventive oil with excellent rust-preventive properties is applied to the metal surface. Water-displacing properties refer to the ability of an additive to penetrate between the metal and the water (aqueous solution) adhering to the metal surface, displacing the water on the metal surface with the rust-preventive oil. To improve water-displacing properties, for example, as described in Patent Document 1, water-displacing agents containing a non-aqueous solvent and a surfactant such as a cationic surfactant or a higher amine or its carboxylate have been developed.

[0004] Furthermore, in order to simplify the process, attempts have been made to omit the step of applying an oil agent or the like with excellent water displacement to remove moisture. In this case, the rust-preventive oil needs to have not only rust prevention properties in an exposure environment but also good water displacement properties. With the aim of providing such a rust-preventive oil, rust-preventive oils containing low-viscosity mineral oil, high-viscosity mineral oil, fatty acid amine salt, ester, and a rust inhibitor such as a sarcosine-type compound have been developed (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 8-60191 [Patent Document 2] Japanese Patent Application Laid-Open No. 2013-199670 Summary of the Invention [Problem to be solved by the invention]

[0006] However, both additives for imparting water displacement properties (water displacement agents) and additives for imparting rust prevention properties (rust inhibitors) impart these properties by adsorbing to the metal surface. Therefore, if both a water displacement agent and a rust inhibitor are blended into a rust preventive oil in order to achieve both water displacement and rust prevention properties, it is believed that they will competitively adsorb to the metal surface, making it generally difficult to achieve both water displacement and rust prevention properties. For example, the water displacement agent disclosed in Patent Document 1 did not provide sufficient rust prevention. Also, in the rust preventive oil composition disclosed in Patent Document 2, a fatty acid amine salt is thought to function as a water displacement agent, and both a water displacement agent and a rust inhibitor are blended, but it is difficult to sufficiently improve rust prevention in an exposure environment.

[0007] Furthermore, when a rust-preventive oil composition is applied to a metal material, for example, by immersing the metal material in the rust-preventive oil composition, water adhering to the surface of the metal material during immersion may be mixed into the rust-preventive oil composition. Therefore, in order to separate the water mixed into the rust-preventive oil composition from the rust-preventive oil composition, the rust-preventive oil composition is required to have water separability in practice. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rust preventive oil composition that can improve rust prevention properties, water displacement properties, and water separability, and a method for producing the same. [Means for solving the problem]

[0008] The present inventors have conducted extensive research in light of the above problems and have found that the problems can be solved by the following invention. That is, the present invention provides a rust preventive oil composition and a method for producing a rust preventive oil composition having the following configurations.

[0009] As a result of extensive research, the present inventors have found that the above-mentioned problems can be solved by using a combination of a specific water remover and a specific rust inhibitor in addition to a solvent and a base oil in a rust preventive oil composition, and have completed the present invention as described below. That is, the present invention provides the following [1] to

[20] .

[0010] [1] A rust preventive oil composition comprising the following components (A-1), (A-2), and (B) to (F), wherein the content of component (B) relative to the total amount of components (A-1), (A-2), and (B) to (F) is 2.5 mass% or more. (A-1) component: kinematic viscosity at 40°C is 6.00 mm 2 / s or less, solvent (A-2) component: kinematic viscosity at 40°C is 6.00 mm 2 / s or greater, base oil Component (B): an alkylene glycol represented by general formula (1) having an HLB of 6.70 or more

[0011] [ka] (In the formula, R 1 and R 2 each independently represents an alkyl group having 1 to 10 carbon atoms, m 1 and m 3 each independently represents an integer of 0 to 10, m 2 represents 0 or 1, n 1 represents an integer from 1 to 10, and m 1 , m 2 and m 3 The sum of is 1 or more, and m 2 and n 1 The product of is either 0 or 1. Component (C): At least one selected from metal sulfonates, metal salicylates, and metal phenates, each having a base number of 50 mgKOH / g or less. (D) Component: Wax having an acid value of 10 mg KOH / g or more Component (E): At least one selected from metal sulfonates, metal salicylates, and metal phenates, each having a base number of 100 mgKOH / g or more. (F) Ingredient: Full ester of polyhydric alcohol

[0012] [2] The rust preventive oil composition according to [1], wherein the total content of the components (A-1), (A-2), and (B) to (F) relative to the rust preventive oil composition is 90.0 mass % or more. [3] The rust preventive oil composition according to [1] or [2], wherein the content of the component (A-2) relative to the rust preventive oil composition is 0.1 mass % or more and 30.0 mass % or less.

[0013] [4] The rust preventive oil composition according to any one of [1] to [3], wherein the total content of the components (A-1) and (A-2) relative to the rust preventive oil composition is 60.0 mass % or more and 95.0 mass % or less. [5] The rust preventive oil composition according to any one of [1] to [4], wherein the content of the component (B) relative to the rust preventive oil composition is 10.0 mass % or less.

[0014] [6] The rust preventive oil composition according to any one of [1] to [5], wherein the components (C) and (E) are at least one selected from alkaline earth metal sulfonates, alkaline earth metal salicylates, and alkaline earth metal phenates. [7] The rust preventive oil composition according to any one of [1] to [6], wherein the content of the component (C) relative to the rust preventive oil composition is 0.1 mass % or more and 10.0 mass % or less.

[0015] [8] The rust preventive oil composition according to any one of [1] to [7], wherein the content of the component (D) relative to the rust preventive oil composition is 0.1 mass % or more and 10.0 mass % or less. [9] The rust preventive oil composition according to any one of [1] to [8], wherein the content of the component (E) relative to the rust preventive oil composition is 0.1 mass % or more and 10.0 mass % or less.

[0016]

[10] The rust preventive oil composition according to any one of [1] to [9], wherein the content of the component (F) relative to the rust preventive oil composition is 1.0 mass % or more and 10.0 mass % or less.

[11] The kinematic viscosity of the component (A-1) at 40°C is 0.5 mm 2 The rust preventive oil composition according to any one of [1] to

[10] , wherein the value is 0.1 / s or more.

[0017]

[12] The kinematic viscosity of the component (A-2) at 40°C is 800 mm 2 The rust preventive oil composition according to any one of [1] to

[11] , wherein the value is 0.1 / s or less.

[13] The number of carbon atoms (S C ) and the number of oxygen atoms (S O ) ratio [S C / S O The rust preventive oil composition according to any one of [1] to

[12] , wherein the value of [Ratio of Ratio of Ratio of Calcium Carbonate] is less than 4.

[0018]

[14] The rust preventive oil composition according to any one of [1] to

[13] , wherein the component (D) is an oxidized wax obtained by oxidizing paraffin wax.

[15] The rust preventive oil composition according to any one of [1] to

[14] , wherein the component (F) is a full ester of a polyhydric alcohol selected from trimethylolpropane, pentaerythritol, or sorbitan with a fatty acid having from 8 to 24 carbon atoms.

[0019]

[16] The rust preventive oil composition according to any one of [1] to

[15] , wherein the total content of the components (B) and (C) relative to the rust preventive oil composition is 2.6 mass % or more and 20.0 mass % or less.

[17] The rust preventive oil composition according to any one of [1] to

[16] , wherein the mass ratio of the component (E) to the component (F) ([(E) / (F)]) is 0.01 or more and 1.00 or less.

[0020]

[18] The rust preventive oil composition according to any one of [1] to

[17] , wherein the total content of the components (A-2), (D), (E) and (F) relative to the rust preventive oil composition is 5.0 mass% or more and 50.0 mass% or less.

[19] 40℃ kinematic viscosity is 1.0mm 2 / s or more, 35mm 2 The rust preventive oil composition according to any one of [1] to

[18] , wherein the viscosity is 1 / s or less.

[0021]

[20] A method for producing a rust preventive oil composition, comprising mixing the following components (A-1), (A-2), and (B) to (F) so that the content of component (B) is 2.5 mass% or more relative to the total amount of components (A-1), (A-2), and (B) to (F): (A-1) component: kinematic viscosity at 40°C is 6.00 mm 2 / s or less, solvent (A-2) component: kinematic viscosity at 40°C is 6.00 mm 2 / s or greater, base oil Component (B): an alkylene glycol represented by general formula (1) having an HLB of 6.70 or more

[0022] [ka] (In the formula, R 1 and R 2 each independently represents an alkyl group having 1 to 10 carbon atoms, m 1 and m 3 each independently represents an integer of 0 to 10, m2 represents 0 or 1, n 1 represents an integer from 1 to 10, and m 1 , m 2 and m 3 The sum of is 1 or more, and m 2 and n 1 The product of is either 0 or 1. Component (C): At least one selected from metal sulfonates, metal salicylates, and metal phenates, each having a base number of 50 mgKOH / g or less. (D) Component: Wax having an acid value of 10 mg KOH / g or more Component (E): At least one selected from metal sulfonates, metal salicylates, and metal phenates, each having a base number of 100 mgKOH / g or more. (F) Ingredient: Full ester of polyhydric alcohol [Effects of the Invention]

[0023] The present invention can provide a rust-preventive oil composition that can improve rust prevention, water displacement, and water separability, and a method for producing the same. [Brief explanation of the drawings]

[0024] [Figure 1] Conceptual diagram of the method for determining water removability [Figure 2] Conceptual diagram of the method for determining water separation DETAILED DESCRIPTION OF THE INVENTION

[0025] Hereinafter, a rust preventive oil composition and a method for producing the same according to an embodiment of the present invention (hereinafter sometimes simply referred to as "the present embodiment") will be specifically described. In this specification, the terms "less than," "more than," and "to" used in describing a range of values ​​can be arbitrarily combined, and the values ​​in the examples are values ​​that can be used as upper or lower limits. For example, when "A to B" and "C to D" are described, the ranges "A to D" and "C to B" are also included as numerical ranges within the scope of the present invention. Furthermore, the numerical range "lower limit to upper limit" described in this specification means a range that is equal to or greater than the lower limit and equal to or less than the upper limit.

[0026] [Rust preventive oil composition] The rust preventive oil composition of this embodiment is required to contain the following components (A-1), (A-2), and (B) to (F), and the content of component (B) relative to the total amount of components (A-1), (A-2), and (B) to (F) is required to be 2.5 mass% or more.

[0027] (A-1) component: kinematic viscosity at 40°C is 6.00 mm 2 / s or less, solvent (A-2) component: kinematic viscosity at 40°C is 6.00 mm 2 / s or greater, base oil Component (B): an alkylene glycol represented by general formula (1) having an HLB of 6.70 or more

[0028] [ka]

[0029] (In the formula, R 1 and R 2 each independently represents an alkyl group having 1 to 10 carbon atoms, m 1 and m 3 each independently represents an integer of 0 to 10, m 2 represents 0 or 1, n 1 represents an integer from 1 to 10, and m 1 , m 2 and m 3 The sum of is 1 or more, and m2 and n 1 The product of is either 0 or 1.

[0030] Component (C): At least one selected from metal sulfonates, metal salicylates, and metal phenates, each having a base number of 50 mgKOH / g or less. (D) Component: Wax having an acid value of 10 mg KOH / g or more Component (E): At least one selected from metal sulfonates, metal salicylates, and metal phenates, each having a base number of 100 mgKOH / g or more. (F) Ingredient: Full ester of polyhydric alcohol

[0031] If any of the above components (A-1), (A-2), and (B) to (F) is absent, or if the content of the above component (B) is not within the above-mentioned predetermined range, the rust preventive oil composition of this embodiment will not be able to achieve the effects of improving rust prevention, water displacement, and water separability. As mentioned above, the performance required of a rust preventive oil composition, such as rust prevention, water displacement, and water separability, is a performance that is realized according to the degree of adsorption of each component to the surface of the metal material, and it is also possible that these components will inhibit each other's adsorption to the surface of the metal material, resulting in competitive adsorption. Even if different components are added to obtain the desired performance, the desired individual performance may not be obtained, making it extremely difficult to combine additives to achieve the desired performance. However, the rust preventive oil composition of this embodiment combines the above components and contains specific components in specific amounts, making it possible to achieve high levels of the contradictory performance of rust prevention, water displacement, and water separability.

[0032] The rust preventive oil composition may be used as is, or may be diluted with a solvent or a light mineral oil and / or synthetic oil to be used as a dilution solution. When used as a dilution solution, the dilution ratio can be appropriately selected depending on the conditions and purpose of use, but the amount of the rust preventive oil composition per 100 parts by mass of the dilution solution is preferably 5 parts by mass or more but less than 100 parts by mass, more preferably 10 parts by mass or more but 80 parts by mass or less, and even more preferably 20 parts by mass or more but 50 parts by mass or less. Each component constituting the rust preventive oil composition of this embodiment will be described below.

[0033] <Component (A-1): Solvent> The rust preventive oil composition of this embodiment has a kinematic viscosity of 6.00 mmHg at 40°C. 2 It is required to contain a solvent of 0.1 wt. / s or less. The kinematic viscosity at 40°C is 4.00mm from the viewpoint of rust prevention, water displacement and water separation. 2 / s or less, and it is also preferable that the component (A-1) volatilizes in part or in whole after application. From the viewpoint of exhibiting good volatility, it is preferable that the component (A-1) volatilizes in part or in whole after application. 2 / s or less is more preferable, and 2.00 mm 2 Although there is no particular restriction on the lower limit, from the viewpoint of improving the solubility of other components and the coating performance, it is preferably 0.50 mm / s or less. 2 / s or more is preferable, and 0.70 mm 2 / s or more is more preferable, and 1.00 mm 2 / s or more is more preferable.

[0034] In this specification, the kinematic viscosity at 40°C is a value measured using a glass capillary viscometer in accordance with JIS K2283:2000. The solvent in this embodiment refers to a substance used to dissolve other components, and may be a liquid or a solid, and solids include semi-solids. However, any solvent having a kinematic viscosity at 40°C within the above-mentioned range may be used without particular limitation. Organic solvents, mineral oils, synthetic oils, etc. may be used, and from the viewpoints of rust prevention, water displacement properties, and water separability, organic solvents, mineral oils, or synthetic oils are preferred, and organic solvents or mineral oils are more preferred. In this embodiment, organic solvents, mineral oils, and synthetic oils can be used alone or in combination.

[0035] Examples of mineral oils include residual oils obtained by atmospheric distillation of paraffinic crude oil, intermediate crude oil, or naphthenic crude oil, distillate oils obtained by vacuum distillation of residual oils from atmospheric distillation, and refined oils obtained by refining these oils using conventional methods, such as solvent refined oil, hydrogenated refined oil, deasphalted oil, dewaxed oil, clay-treated oil, and hydrorefined oil. Other examples include mineral oils obtained by isomerizing wax produced by the Fischer-Tropsch process (GTL wax (Gas to Liquids Wax)). Examples of synthetic oils include poly-α-olefins, α-olefin copolymers, polybutene, alkylbenzenes, polyol esters, dibasic acid esters, polyoxyalkylene glycols, polyoxyalkylene glycol esters, polyoxyalkylene glycol ethers, hindered esters, and silicone oils.

[0036] The organic solvent is preferably at least one selected from nonpolar solvents and aprotic polar solvents, and may be appropriately selected from these. Examples include hydrocarbon solvents such as aliphatic hydrocarbon solvents, alicyclic hydrocarbon solvents, and aromatic hydrocarbon solvents; carbon atom-containing solvents such as alcohol solvents, ester solvents, aldehyde solvents, ketone solvents, ether solvents having 4 or more carbon atoms on one side, and solvents containing carbon atoms and heteroatoms. The organic solvent is an organic compound that is liquid at room temperature and can dissolve other substances. In this embodiment, the organic solvent includes an aliphatic hydrocarbon having 8 to 30 carbon atoms, and isoparaffinic solvents having 8 to 30 carbon atoms are more preferred.

[0037] In this embodiment, in consideration of the ease of adjusting the 40° C. kinematic viscosity of the component (A-1), it is also preferable to use a mixture of multiple solvents with different kinematic viscosities. From the viewpoints of rust prevention, water displacement, and water separability, the content of component (A-1) in the rust preventive oil composition is preferably 40.0 mass% or more and 95.0 mass% or less, more preferably 50.0 mass% or more and 90.0 mass% or less, and even more preferably 60.0 mass% or more and 85.0 mass% or less.

[0038] <Component (A-2): Base oil> The rust preventive oil composition of this embodiment has a kinematic viscosity of 6.00 mmHg at 40°C. 2 It is necessary to contain a base oil of greater than 1 / s. The rust preventive oil composition of this embodiment must contain component (A-1) and component (A-2) which have different kinematic viscosities at 40°C, which allows the rust preventive oil composition to have good rust prevention properties, water displacement properties, and water separability. The kinematic viscosity at 40°C is 10.00mm from the viewpoint of rust prevention, water displacement and water separation. 2 / s or more is preferable, and 20.00 mm 2 / s or more is more preferable, and 25.00 mm 2 / s or more is more preferable, and from the viewpoint of improving the solubility of other components and the coating performance, it is 800.00 mm 2 / s or less is preferable, and 600.00 mm 2 / s or less is more preferable, and 500.00 mm 2 / s or less is more preferable.

[0039] The base oil of the present embodiment can be any oil having a kinematic viscosity at 40°C within the above-mentioned range, but it is preferable that the base oil remain on the coating surface even after the solvent evaporates. Mineral oil or synthetic oil is preferable, and mineral oil is more preferable. In this embodiment, mineral oils and synthetic oils can be used alone or in combination.

[0040] The rust preventive oil composition of this embodiment contains the aforementioned components (A-1) and (A-2), but this does not mean that the components (A-1) and (A-2) are mixed when producing the rust preventive oil composition. It also means that the components (A-1) and (A-2) are included as constituents of the rust preventive oil composition, including cases where a semi-finished product containing the components (A-1) and (A-2) is mixed with a semi-finished product containing the components (A-1) and (A-2).

[0041] More specifically, in consideration of the ease of adjusting the kinematic viscosity at 40°C, component (A-2) is selected to have a kinematic viscosity at 40°C of 10.00 mm. 2 / s or more, 60.00mm 2 / s or less base oil 1, 40℃ kinematic viscosity 60.00mm 2 / s or more, 800.00mm 2 It is preferable that the base oil 1 contains at least one of the base oils 1 and 2 having a viscosity of 1 / s or less, and the base oil 1 and the base oil 2 may be contained together.

[0042] As the component (A-2), base oil 1 and base oil 2 may be used alone or in combination. The kinematic viscosity of base oil 1 at 40°C is set to 10.00 mm from the viewpoint of rust prevention, water displacement and water separation. 2 / s or more is preferable, and 20.00 mm 2 / s or more is more preferable, and 25.00 mm 2 / s or more, and from the viewpoint of improving the solubility of other components and the coating performance, it is more preferable that the viscosity is 60.00 mm 2 / s or less is preferable, and 50.00 mm 2 / s or less is more preferable, and 40.00 mm 2 / s or less is more preferable.

[0043] The kinematic viscosity of base oil 2 at 40°C is set to 60.00 mm from the viewpoint of rust prevention, water displacement and water separation. 2 / s or more is preferable, and 200.00 mm 2 / s or more is more preferable, and 400.00 mm 2 / s or more is more preferable, and from the viewpoint of improving the solubility of other components and the coating performance, it is 800.00 mm 2 / s or less is preferable, and 600.00 mm 2 / s or less is more preferable, and 500.00 mm 2 / s or less is more preferable.

[0044] The content of component (A-2) in the rust preventive oil composition is preferably 0.1% by mass or more and 30.0% by mass or less, more preferably 0.5% by mass or more and 25.0% by mass or less, and even more preferably 0.8% by mass or more and 22.0% by mass or less, from the viewpoint of improving the permeability into metal materials and forming a sufficient coating to improve rust prevention properties.

[0045] From the viewpoints of rust prevention, water displacement, and water separability, the total content of components (A-1) and (A-2) in the rust preventive oil composition is preferably 60.0 mass% or more and 95.0 mass% or less, more preferably 70.0 mass% or more and 93.0 mass% or less, even more preferably 75.0 mass% or more and 90.0 mass% or less, and even more preferably 79.0 mass% or more and 89.0 mass% or less.

[0046] From the viewpoints of rust prevention, water displacement, and water separability, the content of component (A-2) relative to the total amount of components (A-1) and (A-2) is preferably 0.1 mass% or more and 30.0 mass% or less, more preferably 0.5 mass% or more and 25.0 mass% or less, and even more preferably 0.8 mass% or more and 20.0 mass% or less.

[0047] The content of base oil 1 relative to the total amount of component (A-2) can be appropriately selected from 0% by mass to 100% by mass. It is not necessary to include base oil 1, but if base oil 1 is included, it is preferably 30.0% by mass or more, more preferably 40.0% by mass or more, even more preferably 45.0% by mass or more, in order to improve water displacement and water separability, and it is even more preferable that it consists essentially of base oil 1.

[0048] Examples of mineral oils include residual oils obtained by atmospheric distillation of paraffinic crude oil, intermediate crude oil, or naphthenic crude oil, distillate oils obtained by vacuum distillation of residual oils from atmospheric distillation, and refined oils obtained by refining these oils using conventional methods, such as solvent refined oil, hydrogenated refined oil, deasphalted oil, dewaxed oil, clay-treated oil, and hydrorefined oil. Other examples include mineral oils obtained by isomerizing wax produced by the Fischer-Tropsch process (GTL wax (Gas to Liquids Wax)). Examples of synthetic oils include poly-α-olefins, α-olefin copolymers, polybutene, alkylbenzenes, polyol esters, dibasic acid esters, polyoxyalkylene glycols, polyoxyalkylene glycol esters, polyoxyalkylene glycol ethers, hindered esters, and silicone oils.

[0049] <Component (B): Alkylene glycol> In the rust preventive oil composition of this embodiment, the content of component (B) relative to the total amount of components (A-1), (A-2), and (B) to (F) must be 2.5% by mass or more, and from the viewpoint of improving water displacement and water separability as well as rust prevention properties, it is more preferably 2.8% by mass or more, and from the viewpoint of improving compatibility with other components, it is preferably 10.0% by mass or less, more preferably 8.0% by mass or less, and even more preferably 7.0% by mass or less.

[0050] The rust preventive oil composition of this embodiment is required to contain an alkylene glycol represented by the general formula (1) having an HLB of 6.70 or more. The alkylene glycol represented by the general formula (1) may be used alone or in combination of two or more. HLB (Hydrophilic-Lipophilic Balance) is a value that indicates the degree of affinity of a surfactant for water and oil, and the HLB in this application was determined by the method described in Hyomen Gijutsu Vol. 50 No. 12, 1999 pp. 87-91. From the viewpoint of improving rust prevention, water displacement, and water separation properties, the molecular weight is preferably 6.72 or more, and more preferably 6.73 or more. There is no particular upper limit, but from the viewpoint of improving permeability into metal materials and sufficient formation of a coating to improve rust prevention, the molecular weight is preferably 9.00 or less, more preferably 8.50 or less, and even more preferably 8.20 or less.

[0051] R in general formula (1) 1 From the viewpoint of improving rust prevention, water displacement and water separation properties, and improving compatibility with other components, the alkyl group is preferably an alkyl group having 2 to 10 carbon atoms, more preferably an alkyl group having 3 to 8 carbon atoms, and even more preferably an alkyl group having 4 to 6 carbon atoms, and may have a linear or branched chain, and may be an n-C4H9- group, an i-C4H9- group, or an n-C6H 13 It is even more preferred that the group is a - group.

[0052] R in general formula (1) 2 From the viewpoints of improving rust prevention, water displacement and water separation properties, and improving compatibility with other components, is preferably an alkyl group having 1 to 6 carbon atoms, more preferably a CH3- group, a C2H5- group or an n-C3H7- group, and even more preferably a CH3- group from the viewpoint of ease of procurement. m 1 and m 3 are each independently preferably an integer of 0 to 4, more preferably an integer of 0 to 3, and even more preferably an integer of 0 to 2, from the viewpoint of improving rust prevention, water displacement, and water separability, and from the viewpoint of improving compatibility with other components; m 1 +m 3 is preferably an integer of 1 to 4, more preferably 1 or 2.

[0053] m in general formula (1) 2 is preferably 0 or 1, 2 When is 1, m 1 <m 3 Even if m 1 >m 3 Even if m 1 =m 3 may be. m 1 , m2 and m 3 The sum is preferably 2 or more, and from the viewpoint of improving rust prevention, water displacement and water separability, and of improving compatibility with other components, it is preferably 4 or less, more preferably 3 or less, and even more preferably 2.

[0054] n in general formula (1) 1 is preferably an integer of 1 to 4, more preferably an integer of 1 to 3, from the viewpoint of improving rust prevention, water displacement and water separation properties, and from the viewpoint of improving compatibility with other components. m 2 and n 1 The product of is preferably 0 or 1 from the viewpoint of improving rust prevention, water displacement and water separability, and from the viewpoint of improving compatibility with other components.

[0055] n 1 If there are two or more m 1 may be the same or different, and m 2 may be the same or different, and m 3 may be the same or different, but it is more preferable that they are the same in terms of ease of procurement. The number of carbon atoms in the alkylene glycol represented by the general formula (1) (S C ) and the number of oxygen atoms (S O ) ratio [S C / S O From the viewpoint of improving rust prevention, water displacement and water separability, [Ratio of Water Displacement to Water Displacement by ... It is preferably 1.5 or more, more preferably 2.0 or more, and even more preferably 2.3 or more.

[0056] More specifically, the alkylene glycol represented by the general formula (1) is preferably butyl glycol, isobutyl glycol, diethylene glycol monobutyl ether, diethylene glycol isobutyl ether, diethylene glycol monohexyl ether, triethylene glycol monobutyl ether, or propylene glycol mono-n-butyl ether, more preferably diethylene glycol monobutyl ether, diethylene glycol isobutyl ether, or diethylene glycol monohexyl ether, and even more preferably diethylene glycol isobutyl ether or diethylene glycol monohexyl ether.

[0057] The content of the (B) component in the rust preventive oil composition is preferably 2.5% by mass or more, more preferably 2.6% by mass or more, from the viewpoint of improving water displacement and water separation properties as well as rust prevention properties, and is preferably 10.0% by mass or less, more preferably 8.0% by mass or less, and even more preferably 7.0% by mass or less, from the viewpoint of improving compatibility with other components.

[0058] In particular, when diethylene glycol monobutyl ether is used, the content is preferably 2.5% by mass or more and 5.8% by mass or less, and more preferably 3.5% by mass or more and 5.5% by mass or less; when diethylene glycol isobutyl ether is used, the content is preferably 2.5% by mass or more and 5.8% by mass or less, more preferably 3.5% by mass or more and 5.5% by mass or less, and even more preferably 4.5% by mass or more and 5.3% by mass or less; and when diethylene glycol monohexyl ether is used, the content is preferably 2.0% by mass or more and 6.0% by mass or less, more preferably 2.5% by mass or more and 5.5% by mass or less, and even more preferably 3.0% by mass or more and 5.3% by mass or less.

[0059] <(C) Ingredients: Metal sulfonates, metal salicylates, metal phenates> The rust preventive oil composition of this embodiment must contain at least one compound (component (C)) selected from metal sulfonates, metal salicylates, and metal phenates, each having a base number of 50 mgKOH / g or less. Without component (C), excellent rust prevention, water displacement, and water separation properties cannot be obtained. Component (C) includes one or more compounds selected from alkali metal sulfonates, alkali metal phenates, alkali metal salicylates, alkaline earth metal sulfonates, alkaline earth metal phenates, and alkaline earth metal salicylates. Of these, component (C) is preferably at least one selected from alkaline earth metal sulfonates, alkaline earth metal salicylates, and alkaline earth metal phenates, from the viewpoint of improving rust prevention, water displacement, and water separation properties when combined with other components.

[0060] Examples of alkaline earth metal sulfonates include alkaline earth metal salts of alkyl aromatic sulfonic acids obtained by sulfonating alkyl aromatic compounds having a molecular weight of 300 to 1,500, preferably 400 to 700. In particular, magnesium salts and calcium salts are mentioned, with calcium salts being preferred. Examples of alkaline earth metal phenates include alkylphenols, alkylphenol sulfides, and alkaline earth metal salts of Mannich reaction products of alkylphenols, particularly magnesium salts and calcium salts, with calcium salts being preferred. Examples of alkaline earth metal salicylates include alkaline earth metal salts of alkylsalicylic acids, particularly magnesium salts and calcium salts, with calcium salts being preferred. The alkyl group constituting the alkaline earth metal detergent is preferably an alkyl group having 4 to 30 carbon atoms, more preferably 6 to 18 carbon atoms, and may be linear or branched. These may also be primary, secondary, or tertiary alkyl groups.

[0061] The alkaline earth metal sulfonates, alkaline earth metal phenates, and alkaline earth metal salicylates also include alkaline earth metal sulfonates, alkaline earth metal phenates, and alkaline earth metal salicylates obtained by directly reacting the above-mentioned alkyl aromatic sulfonic acids, alkylphenols, alkylphenol sulfides, Mannich reaction products of alkylphenols, alkylsalicylic acids, etc. with alkaline earth metal bases such as oxides or hydroxides of one or more alkaline earth metals selected from magnesium and calcium.

[0062] The base number of the metal sulfonate, metal salicylate, and metal phenate in component (C) is 50 mgKOH / g or less. If the base number exceeds 50 mgKOH / g, excellent rust prevention, water displacement, and water separation properties cannot be obtained when combined with other components. The base number of the metal sulfonates, metal salicylates, and metal phenates of component (C) is preferably 40 mgKOH / g or less, more preferably 30 mgKOH / g or less, from the viewpoint of improving rust prevention as well as water displacement and water separation properties when combined with other components. There is no particular lower limit, but it is usually sufficient if it is greater than 0 mgKOH / g, and it is preferably 1 mgKOH / g or more, and more preferably 3 mgKOH / g or more. As can be seen from these base numbers, component (C) is classified as a neutral metal sulfonate, neutral metal salicylate, or neutral metal phenate.

[0063] The base number is measured in accordance with "9. Potentiometric titration method (base number, perchloric acid method)" of JIS K2501:2003 "Petroleum products and lubricants - Test method for neutralization number." In this embodiment, as the component (C), at least one selected from the metal sulfonates, metal salicylates, and metal phenates may be used alone, or a combination of two or more types may be used.

[0064] The metal content in component (C) relative to the rust preventive oil composition is preferably 1.0% by mass or more, more preferably 1.5% by mass or more, and even more preferably 2.0% by mass or more, from the viewpoint of improving rust prevention properties as well as water displacement properties and water separability in combination with other components, and the upper limit is preferably 10.0% by mass or less, more preferably 8.0% by mass or less, and even more preferably 5.0% by mass or less.

[0065] The content of component (C) in the rust preventive oil composition, calculated as a metal, is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, and even more preferably 0.03% by mass or more, from the viewpoint of improving rust prevention properties as well as water displacement properties and water separability in combination with the other components, and the upper limit is preferably 0.5% by mass or less, more preferably 0.3% by mass or less, and even more preferably 0.1% by mass or less. From the same viewpoint, the content of component (C) in the rust preventive oil composition is preferably 0.1% by mass or more, more preferably 1.0% by mass or more, even more preferably 1.2% by mass or more, and even more preferably 1.5% by mass or more, with the upper limit being preferably 5.0% by mass or less, more preferably 4.0% by mass or less, and even more preferably 3.0% by mass or less.

[0066] The content of component (C) in the rust preventive oil composition is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and even more preferably 0.3% by mass or more, from the viewpoint of improving water displacement and water separation properties as well as rust prevention properties, and is preferably 10.0% by mass or less, more preferably 5.0% by mass or less, and even more preferably 3.5% by mass or less, from the viewpoint of improving compatibility with other components.

[0067] The combination of the (B) and (C) components improves water displacement. The total content of the (B) and (C) components in the rust preventive oil composition is preferably 2.6% by mass or more and 20.0% by mass or less, from the viewpoint of improving water displacement and water separability as well as rust prevention. From the viewpoint of improving water displacement in particular, the total content is more preferably 2.8% by mass or more, even more preferably 3.0% by mass or more, and even more preferably 3.5% by mass or more. From the viewpoint of improving compatibility with other components, the total content is more preferably 15.0% by mass or less, even more preferably 12.0% by mass or less, even more preferably 10.0% by mass or less, particularly preferably 9.5% by mass or less, and most preferably 9.0% by mass or less.

[0068] <(D) Component: Wax> The rust preventive oil composition of this embodiment must contain a wax (component (D)) having an acid value of 10 mgKOH / g or more. Component (D) may be used alone or in combination of two or more types. Without component (D), excellent rust prevention, water displacement, and water separation properties cannot be obtained.The wax used as component (D) is preferably an oxidized wax. Examples of oxidized waxes include various waxes such as paraffin wax, microcrystalline wax, and petrolatum obtained in the refining of petroleum fractions, and waxes obtained by oxidizing these waxes. Among these, oxidized waxes obtained by oxidizing paraffin wax are preferred, from the viewpoint of improving rust prevention properties as well as water displacement properties and water separation properties when combined with other components.

[0069] The acid value of the oxidized wax is 10 mgKOH / g or more. If the acid value is less than 10 mgKOH / g, excellent rust prevention properties as well as water displacement and water separability cannot be obtained. From the viewpoint of improving rust prevention properties as well as water displacement and water separability in combination with other components, the acid value of the oxidized wax is preferably 12 mgKOH / g or more, and the upper limit is preferably 200 mgKOH / g or less, more preferably 100 mgKOH / g or less, and even more preferably 50 mgKOH / g or less. In this specification, the acid value is measured in accordance with "7. Potentiometric titration method (acid value)" in JIS K2501:2003 "Petroleum products and lubricants - Test method for neutralization number."

[0070] The melting point of the oxidized wax is preferably 25°C or higher, more preferably 28°C or higher, and even more preferably 30°C or higher, with the upper limit being preferably 80°C or lower, more preferably 70°C or lower, and even more preferably 60°C or lower. When the melting point of the oxidized wax is 30°C or higher, rust prevention and low-temperature stability are improved, and when it is 80°C or lower, deposition of the wax components can be further suppressed. In this specification, the melting point of the wax is measured in accordance with JIS K0064:1992 "Method for measuring melting point and melting range of chemical products." In this embodiment, the oxidized waxes described above may be used alone or in combination as the component (D).

[0071] The content of component (D) in the rust preventive oil composition is preferably 0.1% by mass or more and 10.0% by mass or less. From the viewpoint of improving water displacement and water separability as well as rust prevention properties, it is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and even more preferably 0.3% by mass or more, and from the viewpoint of improving compatibility with other components, it is preferably 10.0% by mass or less, more preferably 5.0% by mass or less, and even more preferably 3.5% by mass or less.

[0072] <(E) Ingredients: Metal sulfonates, metal salicylates, metal phenates> The rust preventive oil composition of this embodiment must contain at least one compound (component (E)) selected from metal sulfonates, metal salicylates, and metal phenates, each having a base number of 100 mgKOH / g or more. Component (E) may be used alone or in combination of two or more compounds. At least one selected from metal sulfonates, metal salicylates, and metal phenates used as component (E) is a metal salt of the same anion as the metal sulfonates, metal salicylates, and metal phenates used in component (C). Without component (E), excellent rust prevention, water displacement, and water separation properties cannot be obtained. Furthermore, the inclusion of component (E) improves low-temperature stability.

[0073] Component (E) is one or more compounds selected from alkali metal sulfonates, alkali metal phenates, alkali metal salicylates, alkaline earth metal sulfonates, alkaline earth metal phenates, and alkaline earth metal salicylates. Of these, component (E) is preferably at least one selected from alkaline earth metal sulfonates, alkaline earth metal salicylates, and alkaline earth metal phenates, from the viewpoint of improving rust prevention, water displacement, and water separation properties when combined with other components.

[0074] The components (C) and (E) are preferably at least one selected from alkaline earth metal sulfonates, alkaline earth metal salicylates, and alkaline earth metal phenates.

[0075] Examples of alkaline earth metal sulfonates include alkaline earth metal salts of alkyl aromatic sulfonic acids obtained by sulfonating alkyl aromatic compounds having a molecular weight of 300 to 1,500, preferably 400 to 700. In particular, magnesium salts and calcium salts are mentioned, with calcium salts being preferred. Examples of alkaline earth metal phenates include alkylphenols, alkylphenol sulfides, and alkaline earth metal salts of Mannich reaction products of alkylphenols, particularly magnesium salts and calcium salts, with calcium salts being preferred. Examples of alkaline earth metal salicylates include alkaline earth metal salts of alkylsalicylic acids, particularly magnesium salts and calcium salts, with calcium salts being preferred. The alkyl group constituting the alkaline earth metal detergent is preferably an alkyl group having 4 to 30 carbon atoms, more preferably 6 to 18 carbon atoms, and may be linear or branched. These may also be primary, secondary, or tertiary alkyl groups.

[0076] The alkaline earth metal sulfonates, alkaline earth metal phenates, and alkaline earth metal salicylates also include alkaline earth metal sulfonates, alkaline earth metal phenates, and alkaline earth metal salicylates obtained by directly reacting the above-mentioned alkyl aromatic sulfonic acids, alkylphenols, alkylphenol sulfides, Mannich reaction products of alkylphenols, alkylsalicylic acids, etc. with alkaline earth metal bases such as oxides or hydroxides of one or more alkaline earth metals selected from magnesium and calcium.

[0077] The metal sulfonates, metal salicylates, and metal phenates of component (E) are known as overbased metal sulfonates, overbased metal salicylates, and overbased metal phenates having a base number of 100 mgKOH / g or more. If the base number is less than 100 mgKOH / g, excellent rust prevention properties cannot be obtained, and when combined with other components, excellent rust prevention properties as well as water displacement and water separation properties cannot be obtained.

[0078] The base number of the overbased metal sulfonate, overbased metal salicylate, and overbased metal phenate of component (E) is preferably at least 150 mgKOH / g, more preferably at least 200 mgKOH / g, and even more preferably at least 225 mgKOH / g, from the viewpoint of mainly improving rust prevention properties and, in combination with other components, improving rust prevention properties as well as water displacement and water separability. From the viewpoint of improving rust prevention properties in particular, it is preferable to set the base number higher. The upper limit is preferably 600 mgKOH / g or less, more preferably 550 mgKOH / g or less, even more preferably 525 mgKOH / g or less, and even more preferably 509 mgKOH / g or less. In this embodiment, the component (E) may be the above-mentioned metal sulfonates, metal salicylates, and metal phenates, which may be used alone or in combination of two or more.

[0079] The metal content in the metal sulfonate, metal salicylate, and metal phenate of component (E) is preferably 5.0 mass% or more, more preferably 10.0 mass% or more, and even more preferably 15.0 mass% or more, from the viewpoint of mainly improving rust prevention properties and, in combination with other components, improving rust prevention properties as well as water displacement and water separability, and the upper limit is preferably 30.0 mass% or less, more preferably 25.0 mass% or less, and even more preferably 20.0 mass% or less.

[0080] From the same viewpoint, the content of component (E) in the rust preventive oil composition is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and even more preferably 0.7% by mass or more, with the upper limit being preferably 10.0% by mass or less, more preferably 5.0% by mass or less, even more preferably 3.5% by mass or less, and even more preferably 2.3% by mass or less.

[0081] Among the components (A-1), (A-2), and (B) to (F), the components (D) and (E) are components that are likely to react with each other to form reaction products. However, even if such reaction products are formed, they do not affect the rust prevention properties, water displacement properties, and water separation properties, and when the contents are set to the above ranges, they are particularly effective in improving the rust prevention properties.

[0082] <(F) Ingredient: Full ester of polyhydric alcohol> The rust preventive oil composition of this embodiment must contain a full ester of a polyhydric alcohol (component (F)). The component (F) may be used alone or in combination of two or more types. If component (F) is not contained, excellent rust prevention, water displacement and water separation properties cannot be obtained.

[0083] The full ester of polyhydric alcohol used as component (F) is an ester in which all of the hydroxyl groups in the polyhydric alcohol have been esterified, with no hydroxyl groups remaining in the molecule. Without component (F), excellent rust prevention, water displacement, and water separation properties cannot be obtained. As the polyhydric alcohol in the full ester of polyhydric alcohol, from the viewpoint of improving the rust prevention property as well as the water displacement property and the water separation property by combining with other components, trimethylolpropane, pentaerythritol, and sorbitan are preferred, and pentaerythritol is more preferred. In the present embodiment, the polyhydric alcohol used in the full ester may be used alone or in combination of two or more kinds.

[0084] In the present embodiment, from the viewpoint of improving rust prevention, water displacement, and water separation properties in combination with other components, preferred full esters of polyhydric alcohols include, more specifically, full esters of the above-mentioned polyhydric alcohols, i.e., polyhydric alcohols such as trimethylolpropane, pentaerythritol, and sorbitan, with fatty acids having from 8 to 24 carbon atoms. From the same viewpoint, the fatty acid is preferably a monocarboxylic acid, and may be a saturated or unsaturated fatty acid, and may be a straight-chain or branched fatty acid. The number of carbon atoms in the fatty acid is more preferably 10 or more, and even more preferably 12 or more, and the upper limit is more preferably 20 or less, and even more preferably 18 or less.

[0085] 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, palmitic 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, palmitoleic acid, cis-6-octadecenoic acid, oleic acid, trans-9-octadecenoic acid, cis-11-octadecenoic acid, trans-11-octadecenoic acid, etc. Among these, oleic acid is preferred from the viewpoint of improving rust prevention, water displacement, and water separation properties in combination with other components. The fatty acids may be used singly or in combination of two or more.

[0086] The full ester of component (F) inevitably contains a partial ester of a polyhydric alcohol due to partial hydrolysis, and the content of component (F) in the total of component (F) and the partial ester of a polyhydric alcohol is preferably 80% by mass or more, more preferably 85% by mass or more, and even more preferably 90% by mass or more.

[0087] From the viewpoint of improving rust prevention properties, water displacement properties, and water separability, the content of component (F) in the rust preventive oil composition is preferably 1.00% by mass or more, more preferably 1.50% by mass or more, even more preferably 2.00% by mass or more, and even more preferably 2.50% by mass or more, with the upper limit being preferably 10.00% by mass or less, more preferably 8.00% by mass or less, and even more preferably 7.00% by mass or less.

[0088] The components (E) and (F) have complementary properties. The component (E) has excellent rust prevention properties, and the use of the component (F) together with the component (E) can further improve water displacement and water separability. From this perspective, the mass ratio of the components (E) to (F) ([(E) / (F)]) is preferably 0.01 or more, more preferably 0.10 or more, and even more preferably 0.13 or more, with an upper limit of preferably 1.00 or less, more preferably 0.80 or less, even more preferably 0.50 or less, and even more preferably 0.40 or less.

[0089] The components (A-2), (D), (E), and (F) are particularly effective in improving rust prevention. When focusing on rust prevention, the total content of the components (A-2), (D), (E), and (F) in the rust preventive oil composition is preferably 5.00% by mass or more, more preferably 8.00% by mass or more, even more preferably 13.0% by mass or more, and still more preferably 17.0% by mass or more, with the upper limit being preferably 50.0% by mass or less, more preferably 40.00% by mass or less, even more preferably 30.00% by mass or less, and still more preferably 28.0% by mass or less.

[0090] The rust preventive oil composition has a kinematic viscosity of 6 mm at 40°C. 2 / s or less, the 40 °C kinematic viscosity is 6 mm 2 The total content of the base oil having an HLB of 6.70 or more, the alkylene glycol represented by general formula (1) having an HLB of 6.70 or more, the at least one selected from metal sulfonates, metal salicylates, and metal phenates having a base number of 50 mgKOH / g or less, the wax having an acid value of 10 mgKOH / g or more, the at least one selected from metal sulfonates, metal salicylates, and metal phenates having a base number of 100 mgKOH / g or more, and the full ester of a polyhydric alcohol is preferably 80.0% by mass or more, more preferably 90.0% by mass or more, and even more preferably 95.0% by mass or more, with the upper limit being preferably 99.9% by mass or less, more preferably 99.7% by mass or less.

[0091] In the rust preventive oil composition of this embodiment, the inclusion of components (A-1), (A-2), and (B) to (F) not only includes an embodiment in which each of these components is present, but also an embodiment in which, for example, a reaction product resulting from the reaction of some of these components is contained. When a reaction product is contained, the content of the component contributing to the reaction product is the sum of the amount present in the composition without reacting and the amount contributing to the reaction product.

[0092] The total content of the components (A-1), (A-2), and (B) to (F) in the rust preventive oil composition is preferably 90.0% by mass or more, more preferably 93.0% by mass or more, and even more preferably 95.0% by mass or more, from the viewpoint of achieving high levels of the conflicting properties of rust prevention, water displacement, and water separability. The upper limit is not particularly limited, and may be substantially 100% by mass, excluding unavoidably mixed compounds.

[0093] <Other ingredients> The rust preventive oil composition of this embodiment contains the above-mentioned components (A-1), (A-2), and (B) to (F), and may consist solely of these components (A-1), (A-2), and (B) to (F), or may contain other components in addition to these components (A-1), (A-2), and (B) to (F). Specific examples of other components include the following additives:

[0094] Examples of other components include basic metal sulfonates, basic metal salicylates, basic metal phenates, antioxidants, thickeners, metal corrosion inhibitors, pour point depressants, and the like. Examples of the basic metal sulfonate, basic metal salicylate, and basic metal phenate include compounds in which the base number in component (C) is greater than 50 mgKOH / g and less than 100 mgKOH / g. Examples of the antioxidant include phenol-based 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.

[0095] Examples of metal corrosion inhibitors include benzotriazole compounds, tolyltriazole compounds, imidazole compounds, pyrimidine compounds, etc. Examples of pour point depressants include ethylene-vinyl acetate copolymers, condensates of chlorinated paraffin and naphthalene, condensates of chlorinated paraffin and phenol, polymethacrylates, polyalkylstyrenes, and other polymers. Examples of thickeners include esters (full esters and partial esters of pentaerythritol and trimethylolpropane), polybutene, and block or random polymers of polypropylene / polyethylene.

[0096] The total content of the 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 even more preferably 0.3 to 5.0% by mass. That is, the total content of components (A-1), (A-2), and (B) to (F) in the rust preventive oil composition is preferably 80.0% by mass or more, more preferably 90.0% by mass or more, and even more preferably 95.0% by mass or more, with the upper limit being preferably 99.9% by mass or less, more preferably 99.7% by mass or less.

[0097] (Various properties of rust preventive oil composition) The rust preventive oil composition of this embodiment preferably has a kinematic viscosity at 40°C of 1.0 mm 2 / s or more, preferably 1.3 mm 2 / s or more, more preferably 1.5 mm 2 / s or more, and the upper limit is preferably 35 mm 2 / s or less, preferably 20.0 mm 2 / s or less, more preferably 10.0 mm 2 / s or less, and even more preferably 5.0 mm 2 / s or less.

[0098] The flash point of the rust preventive oil composition of this embodiment is preferably 50°C or higher, more preferably 55°C or higher, and even more preferably 60°C or higher, with the upper limit being preferably 300°C or lower, more preferably 250°C or lower, and even more preferably 200°C or lower. When the flash point is within the above range, handling becomes easier, and rust prevention properties as well as water displacement and water separation properties tend to be improved. In this specification, the flash point is a value measured in accordance with the method described in JIS K2265:2007.

[0099] The water removability of the rust preventive oil composition of this embodiment is preferably 5 seconds or less, more preferably 3 seconds or less, and even more preferably 2 seconds or less. In this specification, the water removability is a value measured by the method described in the Examples.

[0100] The water separation property of the rust preventive oil composition of this embodiment is preferably 10 seconds or less, more preferably 9 seconds or less, and even more preferably 8 seconds or less. In this specification, the water separation property is a value measured by the method described in the Examples.

[0101] [Method of using the rust preventive oil composition and method of processing metal materials] The rust-preventive oil composition of this embodiment is used by applying it to the surface of a metal material. When applied to a metal surface, the rust-preventive oil composition of this embodiment forms a coating on the surface of the metal material, and the formation of this coating can prevent the occurrence of rust and the like on the surface of the metal material. Furthermore, because the rust-preventive oil composition has excellent water displacement and water separation properties, it becomes possible to efficiently process and manufacture metal materials. In other words, it can be said that the rust-preventive oil composition of this embodiment is suitably used for the processing and manufacture of metal materials. The application may be carried out 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 any other various coating methods, but immersion is preferred as it is easy to apply.

[0102] The metal material can be machined using a water-based machining fluid or cleaned with an alkaline cleaning fluid or the like, and then the rust preventive oil composition can be applied to the surface of the metal material. The metals for which the rust preventive oil composition is used are preferably iron-containing metals such as pure iron, steel, cast steel, alloy steel, carbon steel, pig iron, and cast iron, but the composition can also be used for other metals. The rust preventive oil composition of this embodiment can be used without particular limitation as long as it is used for an application requiring rust prevention, and is suitably used, for example, for rust prevention between processes, before and after shipping, and the like.

[0103] When the rust-preventive oil composition is used, it may be diluted with a polyhydric hydrogen solvent such as an aliphatic hydrocarbon solvent or an aromatic hydrocarbon solvent. In this case, the content of the rust-preventive oil composition in the diluted solution of the rust-preventive oil composition may be adjusted appropriately as desired and is not particularly limited, but in order to achieve excellent water displacement and water separation properties as well as rust prevention properties and to take into account ease of handling, it is usually sufficient to set the content to between 0.5% by mass and about 10.0% by mass. From the same viewpoint, the 40°C kinematic viscosity of the diluted solution of this rust preventive oil composition is preferably 1.0 mm 2 / s or more, preferably 1.2 mm 2 / s or more, more preferably 1.5 mm 2 / s or more, and the upper limit is preferably 5.0 mm 2 / s or less, preferably 4.5 mm 2 / s or less, more preferably 3.0 mm 2 / s or less.

[0104] [Method for producing rust preventive oil composition] The method for producing the rust preventive oil composition of this embodiment involves mixing the following components (A-1), (A-2), and (B) to (F) so that the content of component (B) is 2.5 mass% or more relative to the total amount of components (A-1), (A-2), and (B) to (F).

[0105] (A-1) component: kinematic viscosity at 40°C is 6.00 mm 2 / s or less, solvent (A-2) component: kinematic viscosity at 40°C is 6.00 mm 2 / s or greater, base oil Component (B): an alkylene glycol represented by general formula (1) having an HLB of 6.70 or more

[0106] [ka]

[0107] (In the formula, R 1 and R 2 each independently represents an alkyl group having 1 to 10 carbon atoms, m 1 and m 3 each independently represents an integer of 0 to 10, m 2 represents 0 or 1, n 1 represents an integer between 1 and 10, while m 1 , m 2 and m 3 The sum of is 1 or more, and m 2 and n 1 The product of is either 0 or 1.)

[0108] Component (C): At least one selected from metal sulfonates, metal salicylates, and metal phenates, each having a base number of 50 mgKOH / g or less. (D) Component: Wax having an acid value of 10 mg KOH / g or more Component (E): At least one selected from metal sulfonates, metal salicylates, and metal phenates, each having a base number of 100 mgKOH / g or more. (F) Ingredient: Full ester of polyhydric alcohol

[0109] In this production method, the above components (A-1), (A-2), and (B) to (F), their blending amounts, other components and their blending amounts, and other details are the same as those explained for the rust preventive oil composition of this embodiment, and therefore further explanation will be omitted. The order of compounding is not particularly limited, and for example, (A-2) and components (B) to (F) may be compounded sequentially with component (A-1), or a premix of components (B) to (F) may be compounded. Furthermore, since components (D) and (E) may react with each other, components (D) and (E) may be premixed and then compounded with component (A). [Example]

[0110] The present invention will be explained in more detail below by way of examples, but the present invention is not limited to these examples in any way.

[0111] The measurement and evaluation methods in the present invention are as follows. (1)Kinematic viscosity The kinematic viscosity was measured using a glass capillary viscometer in accordance with JIS K2283:2000. (2) Base number The base number was measured in accordance with "8. Potentiometric titration method (base number / hydrochloric acid method)" of JIS K2501:2003 "Petroleum products and lubricants - Test method for neutralization number." (3) Acid value The acid value was measured in accordance with "7. Potentiometric titration method (acid value)" of JIS K2501:2003 "Petroleum products and lubricants - Testing method for neutralization number."

[0112] (4) Water removability A GA material 1 (galvanized steel sheet, JAC270D, 60 mm x 80 mm, 1 mm thick) was immersed in ion-exchanged water 6 in a cylinder 5 and gently pulled out, after which it was confirmed that a water layer 2 had formed on the surface. The GA material 3 on which the water layer had formed was immediately and completely immersed in a 100 mL (milliliter) cylinder 5 containing 80 mL of a rust preventive oil composition 7 of the Example or Comparative Example (FIG. 1). After immersion, the time until the water layer of the GA material was completely removed was measured. The measured time was used to make the following evaluations.

[0113] A: Less than 2 seconds B: More than 2 seconds, less than 4 seconds C: More than 4 seconds, less than 5 seconds D: More than 5 seconds D was judged as a failure.

[0114] (5) Water separation property 40 mL of the rust preventive oil composition 7 of the Example or Comparative Example and 40 mL of ion-exchanged water 6 were placed in a 100 mL cylinder 5, and after shaking up and down for 5 seconds, the liquid 8 was left to stand. The time until the oil / water interface 9 could be visually confirmed was measured and evaluated according to the following criteria (Figure 2).

[0115] A: 8 minutes or less B: More than 8 minutes, less than 9 minutes C: More than 9 minutes, less than 10 minutes D: More than 10 minutes E: Emulsified, measurement impossible D and E were judged as failures.

[0116] (6) Evaluation of rust prevention (exposure resistance under eaves) Commercially available SPCC-SD was immersed in the oil compositions of the Examples and Comparative Examples, and after 24 hours of draining, a three-month exposure test was carried out under the eaves. Rust was judged to be present when rust spots appeared indoors. Three tests were carried out. A: No rust for 3 months B: Rust occurs in less than 3 months B was judged to be unsuccessful. (Test conditions) Test environment: Corrosion category C2 to C3 according to ISO9225:2012 (Chiba coastal area) Exam season: July to September

[0117] (7) HLB calculation method (Davis method) The HLB was calculated using the following formula with reference to the description in "Hymen Gijutsu, Vol. 50, No. 12, 1999, page 91." HLB=7+Σ(σO×nO+σOH×nOH)+Σ(σPH×nPH)

[0118] Radical numbers determined by substituents: σO = 1.3 (radical number of -O-), σOH = 1.9 (radical number of -OH), σHP = 1.3 (radical number of CH3-, -CH2-, -CH=), Number of substituents in a molecule: nO is the number of -O-, nOH is the number of -OH, nPH is the sum of the numbers of CH3-, -CH2- and -CH=

[0119] [Examples 1 to 53, Comparative Examples 1 to 15] Using the compounds listed in Table 1, rust preventive oil compositions were prepared for Examples 1 to 53 and Comparative Examples 1 to 15 by sequentially blending component (A-1) with components (A-2), (B) to (F) in the formulations listed in Tables 2 to 13. The rust preventive properties, water displacement properties, and water separability of each of the obtained rust preventive oil compositions were evaluated by the methods described above. The following description is given in the table below.

[0120] The numerical value shown for each component in the table is the content (mass %), which is the content of each component relative to the rust preventive oil composition (100 mass %). In Table 1, m1+m3, m2, n1, and m2×n1 for the component (B) correspond to the respective symbols in general formula (1). (A-1) to (F) mean the total content of the components (A-1), (A-2), (B), (C), (D), (E), and (F) relative to the rust preventive oil composition (100% by mass). (A-1)+(A-2) means the total content of the components (A-1) and (A-2) relative to the rust preventive oil composition (100% by mass). (B)+(C) means the total content of the components (B) and (C) relative to the rust preventive oil composition (100% by mass).

[0121] (E) / (F) means the mass ratio of the component (E) to the component (F). (A-2)+(D)+(E)+(F) means the total content of the components (A-2), (D), (E), and (F) relative to the rust preventive oil composition (100% by mass). The kinematic viscosity at 40°C is the kinematic viscosity of each rust preventive oil composition at 40°C.

[0122] [Table 1]

[0123] [Table 2]

[0124] Examples 1 to 7 and Comparative Examples 1 to 3 shown in Table 2 are rust preventive oil compositions in which component (B) has been replaced. The rust preventive oil compositions of Comparative Examples 1 and 2, which use (B-3) and (B-7) with an HLB of less than 6.7, 2 and n 1 The rust preventive oil composition of Comparative Example 3, which used (B-10) with a product of 2, had poorer water separability than the rust preventive oil compositions of the Examples.

[0125] [Table 3]

[0126] In order to confirm the effect of each component, Comparative Examples 4 to 9 were prepared by replacing components (A-2) and (B) to (F) in the rust preventive oil composition of Example 3 with component (A-1). The results are shown in Table 3. When components (A-2) and (D) to (F) were not included, the rust prevention properties were inferior to those of the compositions of the Examples, and when components (B) and (C) were not included, the water displacement properties and water separability were inferior to those of the compositions of the Examples. It was confirmed that by including all of the components of the present invention, it is possible to improve the rust prevention properties, water displacement properties, and water separability.

[0127] [Table 4]

[0128] The rust preventive oil compositions of Examples 8 to 9 and Comparative Examples 10 to 11 were prepared by varying the content of component (B) from the rust preventive oil composition of Example 3. The results are shown in Table 4. It was confirmed that when the content of component (B) was 2 mass % or less (Comparative Examples 10 and 11), water displacement and water separation properties deteriorated. As shown in Tables 5 and 6, rust preventive oil compositions of Examples and Comparative Examples were prepared by varying the content of component (B) in Example 4 (Table 5) and Example 5 (Table 6). These results confirmed that, regardless of the compound used as component (B), when the content of component (B) was 2 mass% or less, water displacement and water separation properties deteriorated.

[0129] [Table 5]

[0130] [Table 6]

[0131] The rust preventive oil compositions of Examples 14 to 18 were prepared by varying the contents of components (C) and (D) from the rust preventive oil composition of Example 3. The results are shown in Table 7. It was confirmed that rust preventive oil compositions with good rust prevention properties, water displacement properties, and water separability could be obtained even when the contents of components (C) and (D) were changed.

[0132] [Table 7]

[0133] Rust preventive oil compositions of Examples 19 to 25 were prepared by varying the components (B) and (D) and their contents. The results are shown in Table 8. It was confirmed that rust preventive oil compositions with good rust prevention properties, water displacement properties, and water separability could be obtained even when the components (B) and (D) and their contents were varied.

[0134] [Table 8]

[0135] Rust preventive oil compositions of Examples 26 to 29 were prepared by varying the component (E) and its content. The results are shown in Table 9. It was confirmed that rust preventive oil compositions with good rust prevention properties, water displacement properties, and water separability could be obtained even when the component (E) and its content were varied.

[0136] [Table 9]

[0137] Rust preventive oil compositions of Examples 30 to 37 were prepared by varying the component (E) and its content. The results are shown in Table 10. It was confirmed that rust preventive oil compositions with good rust prevention properties, water displacement properties, and water separability could be obtained even when the component (E) and its content were varied.

[0138] [Table 10]

[0139] Rust preventive oil compositions of Examples 38 and 39 were prepared with different contents of component (F). The results are shown in Table 11. It was confirmed that rust preventive oil compositions with good rust prevention properties, water displacement properties, and water separability could be obtained even when the content of component (F) was changed.

[0140] [Table 11]

[0141] The rust preventive oil compositions of Examples 40 to 46 were prepared by varying the base oil used as (A-2) and its content from the rust preventive oil composition of Example 5. The results are shown in Table 12. It was confirmed that rust preventive oil compositions with good rust prevention properties, water displacement properties, and water separability could be obtained even when the (A-2) component and its content were changed.

[0142] [Table 12]

[0143] Rust preventive oil compositions of Examples 47 to 53 were prepared by varying the base oil used as (A-1) and its content. The results are shown in Table 13. It was confirmed that rust preventive oil compositions with good rust prevention properties, water displacement properties, and water separability could be obtained even when the (A-1) component and its content were varied.

[0144] [Table 13]

[0145] From the above, it has been confirmed from the contents of the Examples and Comparative Examples that excellent rust prevention properties, as well as excellent water displacement and water separation properties cannot be obtained if any of the components is missing, or if component (B) is not contained in the specified amount.

Claims

1. A rust preventive oil composition comprising the following components (A-1), (A-2), and (B) to (F), wherein the content of component (B) relative to the total amount of components (A-1), (A-2), and (B) to (F) is 2.5 mass% or more. Component (A-1): kinematic viscosity at 40°C of 6.00 mm ２ / s or less, one or more selected from the group consisting of mineral oil, poly-α-olefin, α-olefin copolymer, polybutene, alkylbenzene, silicone oil, and isoparaffinic solvents having 8 to 30 carbon atoms Component (A-2): one or more oils selected from the group consisting of mineral oil, poly-α-olefin, α-olefin copolymer, polybutene, alkylbenzene, and silicone oil, each having a kinematic viscosity at 40° C. of 10.00 mm 2 / s or more. Component (B): an alkylene glycol represented by general formula (1) having an HLB of 6.70 or more 【Chemistry 1】 (In the formula, R １ and R ２ each independently represents an alkyl group having 1 to 10 carbon atoms; m １ and m ３ each independently represents an integer of 0 to 10, m ２ represents 0 or 1, n １ represents an integer from 1 to 10, m １ , m ２ and m ３ The sum of m is 1 or more, ２ and １ The product of is either 0 or 1. Component (C): At least one selected from metal sulfonates, metal salicylates, and metal phenates, each having a base number of 50 mgKOH / g or less Component (D): wax having an acid value of 10 mgKOH / g or more Component (E): At least one selected from metal sulfonates, metal salicylates, and metal phenates, each having a base number of 100 mgKOH / g or more. Component (F): Full ester of polyhydric alcohol

2. 2. The rust preventive oil composition according to claim 1, wherein the total content of the components (A-1), (A-2), and (B) to (F) relative to the rust preventive oil composition is 90.0 mass% or more.

3. 3. The rust preventive oil composition according to claim 1, wherein the content of said component (A-2) relative to said rust preventive oil composition is 0.1 mass % or more and 30.0 mass % or less.

4. The rust preventive oil composition according to any one of claims 1 to 3, wherein the total content of the components (A-1) and (A-2) relative to the rust preventive oil composition is 60.0 mass% or more and 95.0 mass% or less.

5. 5. The rust preventive oil composition according to claim 1, wherein the content of said component (B) relative to said rust preventive oil composition is 10.0 mass % or less.

6. 6. The rust preventive oil composition according to claim 1, wherein component (C) and component (E) are at least one selected from the group consisting of alkaline earth metal sulfonates, alkaline earth metal salicylates, and alkaline earth metal phenates.

7. 7. The rust preventive oil composition according to claim 1, wherein the content of said component (C) relative to said rust preventive oil composition is 0.1 mass % or more and 10.0 mass % or less.

8. 8. The rust preventive oil composition according to claim 1, wherein the content of said component (D) relative to said rust preventive oil composition is 0.1 mass % or more and 10.0 mass % or less.

9. 9. The rust preventive oil composition according to claim 1, wherein the content of said component (E) relative to said rust preventive oil composition is 0.1 mass % or more and 10.0 mass % or less.

10. 10. The rust preventive oil composition according to claim 1, wherein the content of said component (F) relative to said rust preventive oil composition is 1.0 mass % or more and 10.0 mass % or less.

11. The kinematic viscosity of the component (A-1) at 40°C is 0.5 mm ２ The rust preventive oil composition according to any one of claims 1 to 10, wherein the viscosity of the rust preventive oil composition is 1 / s or more.

12. The kinematic viscosity of the component (A-2) at 40°C is 800 mm ２ The rust preventive oil composition according to any one of claims 1 to 11, wherein the viscosity is 1 / s or less.

13. The number of carbon atoms (S Ｃ ) and the number of oxygen atoms (S Ｏ ) ratio [S Ｃ / S Ｏ 13. The rust preventive oil composition according to claim 1, wherein the value of [Ratio of % to % of the total weight of the oil] is less than 4.

14. The rust preventive oil composition according to any one of claims 1 to 13, wherein the component (D) is an oxidized wax obtained by oxidizing paraffin wax.

15. 15. The rust preventive oil composition according to any one of claims 1 to 14, wherein the component (F) is a full ester of a polyhydric alcohol selected from trimethylolpropane, pentaerythritol, or sorbitan with a fatty acid having from 8 to 24 carbon atoms.

16. The rust preventive oil composition according to any one of claims 1 to 15, wherein the total content of the components (B) and (C) relative to the rust preventive oil composition is 2.6 mass% or more and 20.0 mass% or less.

17. 17. The rust preventive oil composition according to any one of claims 1 to 16, wherein the mass ratio ([(E) / (F)]) of the component (E) to the component (F) is 0.01 or more and 1.00 or less.

18. The rust preventive oil composition according to any one of claims 1 to 17, wherein the total content of the components (A-2), (D), (E), and (F) relative to the rust preventive oil composition is 5.0 mass% or more and 50.0 mass% or less.

19. 40°C kinematic viscosity is 1.0 mm ２ / s or more, 35mm ２ The rust preventive oil composition according to any one of claims 1 to 18, wherein the viscosity is 1 / s or less.

20. A method for producing a rust preventive oil composition, comprising mixing the following components (A-1), (A-2), and (B) to (F) so that the content of component (B) relative to the total amount of components (A-1), (A-2), and (B) to (F) is 2.5 mass% or more. Component (A-1): kinematic viscosity at 40°C of 6.00 mm ２ / s or less, one or more selected from the group consisting of mineral oil, poly-α-olefin, α-olefin copolymer, polybutene, alkylbenzene, silicone oil, and isoparaffinic solvents having 8 to 30 carbon atoms Component (A-2): one or more oils selected from the group consisting of mineral oil, poly-α-olefin, α-olefin copolymer, polybutene, alkylbenzene, and silicone oil, each having a kinematic viscosity at 40° C. of 10.00 mm 2 / s or more. Component (B): an alkylene glycol represented by general formula (1) having an HLB of 6.70 or more 【Chemistry 2】 (In the formula, R １ and R ２ each independently represents an alkyl group having 1 to 10 carbon atoms; m １ and m ３ each independently represents an integer of 0 to 10, m ２ represents 0 or 1, n １ represents an integer from 1 to 10, m １ , m ２ and m ３ The sum of m is 1 or more, ２ and １ The product of is either 0 or 1. Component (C): At least one selected from metal sulfonates, metal salicylates, and metal phenates, each having a base number of 50 mgKOH / g or less Component (D): wax having an acid value of 10 mgKOH / g or more Component (E): At least one selected from metal sulfonates, metal salicylates, and metal phenates, each having a base number of 100 mgKOH / g or more. Component (F): Full ester of polyhydric alcohol

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