KR102339991B1 - Composition of neutral type water soluble cutting oil - Google Patents

Abstract

The present invention relates to a neutral water-soluble cutting oil composition, and more specifically, to a water-soluble cutting oil composition including: 1 to 50 wt% of a lubricating additive; 1 to 40 wt% of a lubricity improver; and 0.01 to 10 wt% of a rust preventive additive, wherein the rust preventive additive includes at least one selected from a group consisting of one or more branched fatty acids having 2 to 30 carbon atoms, dibasic acid having 2 to 30 carbon atoms, and tribasic acid having 2 to 30 carbon atoms.

Description

Neutral type water-soluble cutting oil composition {COMPOSITION OF NEUTRAL TYPE WATER SOLUBLE CUTTING OIL}

The present invention relates to a neutral-type water-soluble coolant composition, and more particularly, to a neutral synthetic-type water-soluble coolant composition.

In the process of industrial development, emphasis on compatibility with the natural environment and people, measures to reduce energy, and guarantee of stable operation of equipment are essential conditions. .

The types of cutting oil are divided into emulsion type cutting oil containing lubricating base oil, semi-synthetic type cutting oil, and synthetic type cutting oil without lubricating base oil.

Cutting oil refers to an emulsion used to aid machining during metal cutting and grinding processes. As the cutting oil base oil, petroleum hydrocarbon lubricating base oil produced in the last step of the crude oil refining process is mainly used. Since such petroleum hydrocarbon base oil is a by-product of the refining process of crude oil, physical properties change according to the characteristics of crude oil without additional expensive refining, and have a disadvantage of causing a low flash point due to low molecular weight hydrocarbons. In addition, dust generated in the workplace can cause serious problems if inhaled through the skin, eyes and respiratory tract of workers, and the World Health Organization has designated unrefined mineral oil as a carcinogen. In addition, when water-soluble processed oil is treated as wastewater, it may be discharged in the form of non-degradable wastewater due to the contained mineral oil (ie, petroleum hydrocarbon) or emulsifier, thereby causing environmental pollution.

Therefore, it is necessary to develop a neutral synthetic type water-soluble cutting oil that does not contain mineral-based lube base oil, is environmentally friendly, minimizes irritation to the human body, and has excellent cleaning properties as well as excellent performance.

The present invention is to solve the above problems, and to provide a neutral synthetic type water-soluble cutting oil composition having excellent lubricity as well as being less irritating to the human body and being washable with water.

However, the problems to be solved by the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to an embodiment of the present invention, 1 to 50% by weight of a lubricant additive in the water-soluble cutting oil composition; 1 to 40% by weight of a lubricity improver; and 0.01 to 10% by weight of a rust preventive additive; Including, wherein the rust preventive additive is selected from the group consisting of at least one branched fatty acid having 2 to 30 carbon atoms, a dibasic acid having 2 to 30 carbon atoms and a tribasic acid having 2 to 30 carbon atoms. It relates to a water-soluble cutting oil composition comprising at least one.

According to an embodiment of the present invention, the lubricant additive includes a polyalkylene glycol-based copolymer, and the molecular weight of the polyalkylene glycol-based copolymer is 1000 (g/mol) to 10,000 ( g/mol).

According to an embodiment of the present invention, the polyalkylene glycol-based copolymer includes an EO/PO copolymer (ethylene oxide-propylene oxide copolymer), and the EO block of the EO/PO copolymer is It may be 50 wt% or less.

According to an embodiment of the present invention, the polyalkylene glycol-based copolymer may include two or more EO/PO copolymers having different molecular weights and EO block contents of the EO/PO copolymer; may include.

According to an embodiment of the present invention, the EO / PO copolymer, EO / PO random copolymer (EO / PO random copolymer), EO / PO block copolymer (Block EO / PO copolymer), reverse EO / PO block It may include at least one selected from the group consisting of a reverse EO/PO copolymer, an EO/PO anionic copolymer, and an EO/PO anionic copolymer derivatives.

According to an embodiment of the present invention, the polyalkylene glycol-based copolymer includes a first reverse EO/PO block copolymer and a second reverse EO/PO block copolymer, and the first reverse EO/PO block copolymer. The EO/PO block copolymer to the second reverse EO/PO block copolymer (mass ratio) may be 1:1 to 1:10.

According to an embodiment of the present invention, the rust preventive additive is 2-butyl-octanoic acid (2-butyl-octanoic acid), 2-hexyl-octanoic acid (2-hexyl-oecanoic acid), 2-decyl- Tetradecanoic acid (2-decyl-tetradecanoic acid), oxalic acid (Oxalic acid), malonic acid (Malonic acid), succinic acid (Succinic acid), glutaric acid (Glutaric acid), adipic acid (Adipic acid), pimelic acid (Pimelic acid), suberic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, brassylic acid, tetra Tetradecanedioic acid, Thapsic acid, Japanic acid, Phellogenic acid, Equisetolic acid and 2,4,6-tri- (6-amino) Caproic acid) -1,3,5-triazine (2,4,6-tri- (6-aminocaproic acid) -1,3,5-triazine) may include at least one selected from the group consisting of .

According to an embodiment of the present invention, the rust preventive additive, sebacic acid, undecanedioic acid, dodecanedioic acid, brassylic acid, and tetradecanedioic acid (Tetradecanedioic) acid) may include at least 3 or more selected from the group consisting of.

According to an embodiment of the present invention, 1% to 20% by weight of the rust preventive additive sebacic acid (Sebacic acid); 10% to 60% by weight of undecanedioic acid; 10% to 50% by weight of dodecanedioic acid; less than 5% by weight of Brassylic acid; and less than 5% by weight of tetradecanedioic acid.

According to an embodiment of the present invention, the lubricity improving agent includes a saturated fatty acid having 4 to 22 carbon atoms, an unsaturated fatty acid having 4 to 22 carbon atoms, or both, and the saturated fatty acid is, butyric acid, valeric acid ( Valeric acid), caproic acid, enanthic acid, caprylic acid, pelargonic acid, isononanoic acid, neodecanoic acid , Undecylic acid, Lauric acid, Tridecylic acid, Myristic acid, Pentadecylic acid, Palmitic acid, Margaric acid (Margaric acid), stearic acid (Stearic acid), nonadecylic acid (Nonadecylic acid), arachidic acid (Arachidic acid), heneicosylic acid (Heneicisylic acid) and at least one selected from the group consisting of behenic acid (Behenic acid) Including the above, wherein the unsaturated fatty acids are palmitoleic acid, oleic acid, linoleic acid, linolenic acid, stearidonic acid, Paulinic acid (Paullinic acid), Gondoic acid, Dihomo-γ-linolenic acid, Eicosapentaenoic acid, Mead acid, Cervonic acid , erucic acid (Erucic acid), docosatetraenoic acid (Docosatetraenoic acid) and nervonic acid (Nervonic acid) may be one comprising at least one selected from the group consisting of.

According to an embodiment of the present invention, a pH constant agent is further included, and the pH constant agent may be included in an amount of 40 wt% or less of the water-soluble cutting oil composition.

According to an embodiment of the present invention, the pH constant agent includes amines, the pH constant agent includes amines containing a hydroxyl group, amines not including a hydroxyl group, or both, and the amines containing a hydroxyl group are , monoethanolamine, monoisopropanolamine, diglycolamine, diisopropanolamine, dioleylethanolamine, dilaurylpropanolamine, dioctylethanolamine, dibutylethanolamine, diethylethanolamine, dimethylethanolamine, Dihexylpropanolamine, dibutylpropanolamine, diethanolamine, oleyldiethanolamine, cyclohexyldiethanolamine, stearyldipropanolamine, lauryldiethanolamine, aminomethylpropanol, aminoethylpropanediol, octyldipropanol amine, butylaminoethanol, butyldiethanolamine, methyldiethanolamine, benzyldiethanolamine, phenyldiethanolamine, tolyldipropanolamine, xylyldiethanolamine, triethanolamine, tripropanolamine, triisopropanolamine and The amines containing at least one selected from the group consisting of 3-amino-4 octanol and not containing a hydroxyl group include at least one of a linear, cyclic, or branched saturated or unsaturated hydrocarbon group having 1 to 30 carbon atoms. Including, the hydrocarbon group, a methyl group, an ethyl group, a propyl group, a butyl group, a hexyl group, a cyclohexyl group, a heptyl group, a cycloheptyl group, an octyl group, a nonyl group, a decyl group, an undecyl group, a dodecyl group, a tridecyl group, Tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl, pentaeicosyl, docosyl, tricosyl, tetracosyl, pentacosyl, hexacosyl, Heptacosyl group, octacosyl group, nonacosyl group, triacontyl group, hexenyl group, heptenyl group, octenyl group, nonenyl group, decenyl group, undecenyl group, dodecenyl group, tridecenyl group, tetradecenyl group, pentadecenyl group , hexadecenyl group, heptadesenyl group, octadesenyl group, nonadesenyl group, eicosenyl group, heneicosenyl group, docosenyl group, tricosenyl group, tetracosenyl group, pentacosenyl group, hexacosenyl group, heptacosenyl group, Octacosenyl, nonacosenyl and tricosenyl groups It may include at least one selected from the group consisting of.

According to an embodiment of the present invention, a bactericide, a discoloration inhibitor; Or these two; further comprising, The disinfectant and the discoloration inhibitor may each be included in an amount of 5% by weight or less of the composition.

According to an embodiment of the present invention, the disinfectant is at least selected from the group consisting of triazine-based preservatives, alkyl benzimidazole-based preservatives, isothiazoline-based preservatives, pyridine-based preservatives, phenol-based preservatives and pyrithione-based preservatives It may include one or more.

According to an embodiment of the present invention, the disinfectant is a combination of 1,1'-oxybis[2-chloroethane] and N,N,N',N'-tetramethyl-1,2-ethanediamine polymer (N,N,N',N'-tetramethyl-1,2-ethanediamine Polymer With 1,1'-oxybis[2-chloroethane]), tetrakis(hydroxymethyl)-phosphonium sulfate (THPS), 1, 3,5-tris(2-hydroxyethyl)-s-triazine, iodopropynylbutylcarbamate, 1,2-benzisothiazolin-3-one, 2-butyl-1,2-benziso Thiazolin-3-one, 2-methyl-1,2-benzisothiazolin-3-one, 4,4-dimethyloxazolidine, 7-ethyl bicyclooxazolidine, 4- (2- Combination of nitrobutyl)-morpholine with 4,4'-(2-ethyl-2-nitrotrimethylene)-dimorpholine, 2-methyl-4-isothiazolin-3-one, 5- Combination of chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one, 2-bromo-2-nitro-1,3-propane It may include at least one selected from the group consisting of diol, octyl isothiazolinone, dichloro-octylisothiazolinone, and dibromo-octylisothiazolinone.

According to an embodiment of the present invention, the discoloration inhibitor, imidazoline, a derivative of pyrimidine, 1H-benzotriazole, tolyltriazole, butylbenzotriazole, mercaptobenzothiazole, dimercaptobenzothiazole, It may include at least one selected from the group consisting of dimercaptothiadiazole, sodium phosphate salt, phosphate ester and derivatives thereof, amino silane and derivatives thereof, metal or organic silicates and derivatives thereof.

According to an embodiment of the present invention, the discoloration inhibitor is at least one selected from the group consisting of 1H-benzotriazole, mercaptobenzothiazole, dimercaptobenzothiazole, tolyltriazole, butylbenzotriazole and derivatives thereof. It may include more than one.

According to an embodiment of the present invention, the pH of the water-soluble cutting oil may be 6 to 10, or the water-soluble cutting oil may be a neutral type.

The neutral synthetic type water-soluble cutting oil composition according to the present invention has less irritation to the human body and can be washed with water, and exhibits excellent lubricity and discoloration prevention properties. It can show maintenance performance and environmental friendliness.

Hereinafter, embodiments of the present invention will be described in detail. In describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the terms used in this specification are terms used to properly express a preferred embodiment of the present invention, which may vary depending on the intention of a user or operator or a custom in the field to which the present invention belongs. Accordingly, definitions of these terms should be made based on the content throughout this specification.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

Throughout the specification, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components.

The present invention relates to a water-soluble cutting oil, and according to an embodiment of the present invention, the water-soluble cutting oil includes a lubricating additive, a lubricity improver and a rust preventive additive, and includes a pH adjusting agent, a sterilizing agent, and a discoloration inhibitor; It may further include additives such as.

According to an embodiment of the present invention, the lubricating additive provides excellent lubrication and may include a water-soluble lubricating additive. The lubricating additive may include 1% to 50% by weight of the lubricating additive in the composition; 5% to 40% by weight; 10% to 40% by weight; Or 10 wt% to 30 wt%; may be included. When it falls within the above range, it can provide excellent lubricity as well as excellent cleaning properties that can be washed with water. If it is high, the viscosity of the stock solution increases with a high molecular weight raw material, which may cause difficulties in preparing diluents in the field.

In one embodiment of the present invention, the water-soluble lubricant additive includes polyalkylene glycol and, for example, a polyalkylene glycol-based polyalkylene glycol block unit including a polyalkylene glycol block unit. copolymers.

As an example of the present invention, the molecular weight of the polyalkylene glycol-based copolymer is 1,000 (g/mol) to 10,000 (g/mol), and the molecular weight may be a weight average molecular weight.

As an example of the present invention, the polyalkylene glycol-based copolymer includes an EO/PO copolymer (ethylene oxide-propylene oxide copolymer) of (poly(ethylene oxide) and poly(propylene oxide)) and , 50 wt% or less of the EO block in the EO/PO copolymer; less than 50% by weight; 45% by weight or less; 30% by weight or less; Alternatively, it may be 1 wt% to 30 wt%. When included within the above range, it is possible to improve lubricity and secure appropriate solubility in water.

According to an embodiment of the present invention, the EO / PO copolymer, EO / PO random copolymer (EO / PO random copolymer), EO / PO block copolymer (Block EO / PO copolymer), reverse EO / PO block It may include at least one selected from the group consisting of a reverse EO/PO copolymer, an EO/PO anionic copolymer, and an EO/PO anionic copolymer derivatives.

As an example of the present invention, the polyalkylene glycol-based copolymer may include two or more EO/PO copolymers, for example, the molecular weight of the EO/PO copolymer and the content of the EO block. two or more of these different EO/PO copolymers. The molecular weight of the two or more EO/PO copolymers is 1000 to 10,000 (weight average molecular weight, g/mol), respectively, and the EO block may be 50% by weight or less of the EO/PO block copolymer.

For example, it includes two kinds of reverse EO/PO block copolymers, and the molecular weight (eg, weight average molecular weight, g/mol) of the reverse EO/PO block copolymer is 1000 to 10,000 (g/mol) ; 1000 to 5,000 (g/mol); 1500 to 3000 (g/mol); or 2000 to 3000 (g/mol), wherein the EO block in the reverse EO/PO block copolymer is less than 50% by weight; 45% by weight or less; 30% by weight or less; or 10% to 25% by weight. When included within the above range, it is possible to provide excellent lubricity and water-cleaning properties. In addition, when the PO content is increased, temporary lubricity may be improved, but there is a possibility that the solubility in water may be deteriorated and the cleaning property may be deteriorated.

In one embodiment of the present invention, the lubricant additive may include two or more kinds of reverse EO/PO block copolymers, for example, a first reverse EO/PO block copolymer and a second reverse EO/PO block copolymer. wherein the first reverse EO/PO block copolymer to the second reverse EO/PO block copolymer (mass ratio) is 1:1 to 1:10; 1:1 to 1:5; Or 1:1 to 1:3 may be. Alternatively, the first reverse EO/PO block copolymer and the second reverse EO/PO block copolymer each comprise 40 wt% or less of the composition; 30% by weight or less; Or 5 to 20% by weight may be included. The EO block ratio of the first reverse EO/PO block copolymer to the EO block ratio of the second reverse EO/PO block copolymer may be 1:1 to 1:5.

According to an embodiment of the present invention, the lubricity improving agent provides not only lubricity but also stock solution stability of a neutral synthetic type water-soluble cutting oil composition, and comprises 1 wt% to 40 wt% of the composition; 2% to 30% by weight; or 4 wt% to 20 wt%; may be. When included in the above range, it may help to maintain lubricity by promoting emulsion stability under severe conditions in addition to improving processability by the lubricating additive, and may also be advantageous in improving the stability of the stock solution of the neutral synthetic type water-soluble cutting oil composition.

In one embodiment of the present invention, the lubricity improving agent includes a saturated fatty acid having 4 to 22 carbon atoms, an unsaturated fatty acid having 4 to 22 carbon atoms, or both, for example, the saturated fatty acid is, butyric acid, valeric acid ( Valeric acid), caproic acid, enanthic acid, caprylic acid, pelargonic acid, isononanoic acid, neodecanoic acid , Undecylic acid, Lauric acid, Tridecylic acid, Myristic acid, Pentadecylic acid, Palmitic acid, Margaric acid (Margaric acid), stearic acid (Stearic acid), nonadecylic acid (Nonadecylic acid), arachidic acid (Arachidic acid), heneicosylic acid (Heneicisylic acid) and at least one selected from the group consisting of behenic acid (Behenic acid) may include more than one.

For example, the unsaturated fatty acids include palmitoleic acid, oleic acid, linoleic acid, linolenic acid, stearidonic acid, and paulinic acid ( Paullinic acid), Gondoic acid, Dihomo-γ-linolenic acid, Eicosapentaenoic acid, Mead acid, Cervonic acid, It may include at least one selected from the group consisting of erucic acid, docosatetraenoic acid, and nervonic acid.

According to an embodiment of the present invention, the rust preventive additive, 0.01% to 10% by weight of the composition; 0.1 to 10% by weight; or 0.5 to 5% by weight; Alternatively, it may be 0.5 wt% to 3 wt%, and when it is included within the above range, it is preferable to maintain the rust prevention property of the processing equipment. The disadvantage of having to add an agent may occur.

In one embodiment of the present invention, the rust preventive additive includes at least one selected from the group consisting of one or more branched fatty acids, dibasic acid and tribasic acid, and has 2 to 30 carbon atoms; 8 to 22 carbon atoms; Or it may include a saturated or unsaturated hydrocarbon group having 10 to 14 carbon atoms. For example, branched fatty acids or saturated aliphatic monocarboxylic acids and dicarboxylic acids having 2 to 30 carbon atoms having two or three carboxyl groups; And it may include at least one or more selected from the group consisting of tricarboxylic acids having a triazine structure, for example, 2-butyl-octanoic acid (2-butyl-octanoic acid), 2-hexyl-octanoic acid (2-hexyl-oecanoic acid), 2-decyl-tetradecanoic acid (2-decyl-tetradecanoic acid), oxalic acid (Oxalic acid), malonic acid (Malonic acid), succinic acid (Succinic acid), glutaric acid ( Glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid (Dodecanedioic acid), Brassylic acid, Tetradecanedioic acid, Thapsic acid, Japanic acid, Phellogenic acid, Equisetolic acid , as 2,4,6-tri-(6-aminocaproic acid)-1,3,5-triazine (2,4,6-tri-(6-aminocaproic acid)-1,3,5-triazine) It may include at least one selected from the group consisting of.

As an example of the present invention, the rust preventive additive has a long carbon number and is more than dibasic acid, and the more the mixture is, the better the rust prevention property is, preferably within 8 to 22 carbon atoms, and more preferably within 10 to 14 carbon atoms. It may include at least three or more selected from the group consisting of undecanedioic acid, dodecanedioic acid, brassylic acid, and tetradecanedioic acid. For example, in the rust preventive additive, 1 wt% to 20 wt% of the sebacic acid; 10% to 60% by weight of the undecanedioic acid; 10% to 50% by weight of the dodecanedioic acid; less than 5% by weight of the Brassylic acid; And less than 5% by weight of the tetradecanedioic acid (Tetradecanedioic acid); may be.

According to one embodiment of the present invention, the pH constant agent neutralizes the acid component and maintains the pH of the diluent, 40% by weight or less of the composition; 30% by weight or less; 25% by weight or less; or 1 to 20% by weight. When included within the above range, it is possible to reduce human irritation such as skin irritation caused by low pH, to maintain the pH stably during the period of use of the cutting oil, and to help maintain equipment rust prevention.

In one embodiment of the present invention, the pH adjusting agent includes amines, the amines include amines containing a hydroxyl group, amines not including a hydroxyl group, or both, and the amines include an aromatic group having 6 to 30 carbon atoms, and an aromatic group having 6 to 30 carbon atoms. It may contain 1 to 30 linear, cyclic or branched saturated or unsaturated hydrocarbon groups.

For example, the hydroxyl group-containing amines include hydroxyl group-containing monoethanolamine, monoisopropanolamine, diglycolamine, diisopropanolamine, dioleylethanolamine, dilaurylpropanolamine, dioctylethanolamine, Dibutylethanolamine, diethylethanolamine, dimethylethanolamine, dihexylpropanolamine, dibutylpropanolamine, diethanolamine, oleyldiethanolamine, cyclohexyldiethanolamine, stearyldipropanolamine, lauryldi Ethanolamine, aminomethylpropanol, aminoethylpropanediol, octyldipropanolamine, butylaminoethanol, butyldiethanolamine, methyldiethanolamine, benzyldiethanolamine, phenyldiethanolamine, tolyldipropanolamine, xylyldiethanol It may include at least one selected from the group consisting of amine, triethanolamine, tripropanolamine, triisopropanolamine, and 3-amino-4octanol.

For example, the amines not containing a hydroxyl group may be primary to tertiary amines having a linear, cyclic, or branched saturated or unsaturated hydrocarbon group having 1 to 30 carbon atoms. For example, the hydrocarbon group is a methyl group, an ethyl group , propyl group, butyl group, hexyl group, cyclohexyl group, heptyl group, cycloheptyl group, octyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group Sil group, heptadecyl group, octadecyl group, nonadecyl group, eicosyl group, pentaeicosyl group, docosyl group, tricosyl group, tetracosyl group, pentacosyl group, hexacosyl group, heptacosyl group, octacosyl group, nonaco Actyl group, triacontyl group, hexenyl group, heptenyl group, octenyl group, nonenyl group, decenyl group, undecenyl group, dodecenyl group, tridecenyl group, tetradecenyl group, pentadecenyl group, hexadecenyl group, heptadecenyl group, octadecenyl group Decenyl group, nonadesenyl group, eicosenyl group, heneicosenyl group, docosenyl group, tricosenyl group, tetracosenyl group, pentacosenyl group, hexacosenyl group, heptacosenyl group, octacosenyl group, nonacosenyl group, tricosenyl group It may include at least one selected from the group consisting of diaries. Preferably, amines having a low pH may be selected in consideration of securing price competitiveness and skin irritation, for example, triethanolamine. That is, triethanolamine is an amine having a low pH that exhibits a high boiling point and low vapor pressure, and can lower or minimize skin irritation caused by a low pH.

According to an embodiment of the present invention, the sterilizing agent, the discoloration inhibitor; or both, each in less than or equal to 5% by weight of the composition; Or 3% by weight or less may be included. When included within the above range, it is possible to prevent the proliferation of harmful bacteria due to repeated use of cutting oil and mixing of other oils, and to provide excellent discoloration prevention performance of metals, that is, non-ferrous metals.

In one embodiment of the present invention, the disinfectant is at least one selected from the group consisting of triazine-based preservatives, alkyl benzimidazole-based preservatives, isothiazoline-based preservatives, pyridine-based preservatives, phenol-based preservatives and pyrithione-based preservatives may include, for example, combinations of 1,1'-oxybis[2-chloroethane] and N,N,N',N'-tetramethyl-1,2-ethanediamine polymers (N,N ,N',N'-tetramethyl-1,2-ethanediamine Polymer With 1,1'-oxybis[2-chloroethane]), tetrakis(hydroxymethyl)-phosphonium sulfate (THPS), 1,3,5- Tris(2-hydroxyethyl)-s-triazine, iodopropynylbutylcarbamate, 1,2-benzisothiazolin-3-one, 2-butyl-1,2-benzisothiazoline- 3-one, 2-methyl-1,2-benzisothiazolin-3-one, 4,4-dimethyloxazolidine, 7-ethyl bicyclooxazolidine, 4- (2-nitrobutyl) Combination of -morpholine with 4,4'-(2-ethyl-2-nitrotrimethylene)-dimorpholine, 2-methyl-4-isothiazolin-3-one, 5-chloro-2- Combination of methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one, 2-bromo-2-nitro-1,3-propanediol, octyl It may include at least one selected from the group consisting of isothiazolinone, dichloro-octylisothiazolinone, and dibromo-octylisothiazolinone.

According to an embodiment of the present invention, the discoloration inhibitor is a metal corrosion inhibitor, imidazoline, a derivative of pyrimidine, 1H-benzotriazole, tolyltriazole, butylbenzotriazole, mercaptobenzothiazole , dimercaptobenzothiazole, dimercaptothiadiazole, sodium phosphate salt, phosphoric acid ester and derivatives thereof, aminosilane and derivatives thereof, metal or organic silicates and derivatives thereof may include at least one selected from the group consisting of, , For example, 1H-benzotriazole, mercaptobenzothiazole, dimercaptobenzothiazole, tolyltriazole, butylbenzotriazole and derivatives thereof may be one comprising at least one selected from the group consisting of.

According to an embodiment of the present invention, the water-soluble cutting oil may have a pH of 6 to 10, preferably a pH of 6 to 9, more preferably a pH of 6.5 to 8.5, more preferably a pH of 7 to 8; Or it may be a neutral type.

According to an embodiment of the present invention, the composition may include a solvent, and the solvent may include water. The solvent may be included in the remaining amount, for example, 5 wt% to 80 wt% of the composition; 8% to 65% by weight; or 35% to 55% by weight.

Unless departing from the purpose and scope of the present invention in the present specification, meanings greater than, less than, and/or less than a specific value may be included within the numerical range.

Hereinafter, the present invention will be described in more detail by way of Examples and Comparative Examples. However, the following examples are only for illustrating the present invention, and the content of the present invention is not limited to the following examples.

Examples 1 to 5

According to an embodiment of the present invention, by applying the components mentioned in the description of the composition, a neutral type water-soluble cutting oil composition was prepared in the content shown in Table 1. The properties of the prepared water-soluble cutting oil composition were analyzed and shown in Table 2 below.

In Table 1, the content may be modified as (± 0.1, ± 0.5, or ± 1 to 5). In addition, the rust preventive additive is a mixture of dibasic acids, and includes sebacic acid, undecanedioic acid, dodecanedioic acid, brassylic acid, and tetradecanedioic acid. and lubricating additive 1 and lubricating additive 2 are selected from Reverse EO/PO Block Copolymer (EO 10 % ~ 50 %).

Raw material name Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Ion-exchanged water 8.2 19.7 35.2 50.7 62.4 79.2 pH antagonist 27.0 22 18.0 14.0 10.0 5.0 metal corrosion inhibitor 1.0 1.0 1.0 1.0 0.8 0.5 anti-rust additive 3.0 2.5 2.0 1.5 1.0 0.5 Lubricity improver 20.0 18.0 12.0 9.0 7.0 5.0 Lubricant Additive 1 20.0 18.0 15.5 11.5 9.0 4.5 Lubricating Additive 2 20.0 18.0 15.5 11.5 9.0 4.5 disinfectant 0.8 0.8 0.8 0.8 0.8 0.8 Sum 100.0 100.0 100.0 100.0 100.0 100.0

Analysis items Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Test Methods Exterior undiluted off-white translucent off-white transparent off-white transparent off-white transparent off-white transparent off-white translucent Visual check diluent off-white translucent off-white translucent off-white translucent off-white translucent off-white transparent off-white transparent metal corrosion
(aluminum and copper plate) discoloration
none discoloration
none discoloration
none discoloration
none discoloration
none discoloration
none KSM 2525 pH (vol.3.3%) 7.2 7.2 7.5 7.5 7.2 6.9 KSM 0011 emulsion stability
water oil trace trace trace trace trace trace KSM 2525 cream trace trace trace trace trace trace Water oil 0.1 0.1 trace trace trace trace cream trace trace trace trace trace trace Non-volatile minutes (%) 88.5 79.2 63.0 49.9 37.1 18.9 KSM 2525 foamy 1 or less 1 or less 1 or less 1 or less 1 or less 1 or less KSM 2525 Factor 1.1 1.3 1.6 2.0 2.6 5.0 -

The present invention can provide a neutral synthetic type water-soluble cutting oil composition that has low skin irritation due to low pH and exhibits excellent lubricity as well as excellent cleaning properties that can be washed with water by applying a water-soluble lubricating additive and lubricity improver. In addition, the neutral synthetic type water-soluble cutting oil composition according to the present invention exhibits excellent properties in terms of mild odor and less foaming, and excellent separability of other oils even without the use of an emulsifier or surfactant. In addition, the neutral synthetic-type water-soluble cutting oil composition according to the present invention has less scattering compared to emulsion-type and semi-synthetic-type products to which mineral oil is applied, and can exhibit excellent concentration retention during long-term use.

As described above, although the embodiments have been described by way of limited embodiments, those skilled in the art may apply various technical modifications and variations based on the above. For example, the described techniques are performed in an order different from the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result. In addition, within the stated numerical range, the meaning of less than, more than, more than, and/or less than a specific value may be included without departing from the purpose and scope of the present invention. Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

Claims (18)

In the water-soluble cutting oil composition
1 to 50% by weight of a lubricant additive;
1 to 40% by weight of a lubricity improver; and
0.01 to 10 wt% of a rust preventive additive;
including,
The rust inhibitor is at least one selected from the group consisting of one or more branched fatty acids having 2 to 30 carbon atoms, dibasic acid having 2 to 30 carbon atoms, and tribasic acid having 2 to 30 carbon atoms. including,
The lubricating additive includes a polyalkylene glycol-based copolymer,
The polyalkylene glycol-based copolymer is,
Including; at least two EO/PO copolymers having different molecular weights and EO block contents of the EO/PO copolymer;
5% to 40% by weight of a pH antagonist,
The pH constant agent will include amines,
Water-soluble coolant composition.
According to claim 1,
The molecular weight of the polyalkylene glycol-based copolymer is, 1000 (g / mol) to 10,000 (g / mol),
Water-soluble coolant composition.
According to claim 1,
The polyalkylene glycol-based copolymer is,
Containing an EO / PO copolymer (ethylene oxide-propylene oxide copolymer),
In the EO / PO copolymer, the EO block is 50% by weight or less,
Water-soluble coolant composition.
delete According to claim 1,
The EO / PO copolymer,
EO/PO random copolymer, EO/PO block copolymer (Block EO/PO copolymer), reverse EO/PO block copolymer (Reverse EO/PO copolymer), EO/PO anionic copolymer ( Anionic copolymer) and EO / PO anionic copolymer derivatives (Anionic copolymer derivatives) comprising at least one selected from the group consisting of,
Water-soluble coolant composition.
In the water-soluble cutting oil composition
1 to 50% by weight of a lubricant additive;
1 to 40% by weight of a lubricity improver; and
0.01 to 10 wt% of a rust preventive additive;
including,
The rust inhibitor is at least one selected from the group consisting of one or more branched fatty acids having 2 to 30 carbon atoms, dibasic acid having 2 to 30 carbon atoms, and tribasic acid having 2 to 30 carbon atoms. including,
The lubricating additive includes a polyalkylene glycol-based copolymer,
The polyalkylene glycol-based copolymer is,
a first reverse EO/PO block copolymer and a second reverse EO/PO block copolymer;
wherein the first reverse EO/PO block copolymer to the second reverse EO/PO block copolymer (mass ratio) is 1:1 to 1:10;
Further comprising up to 5% by weight of a disinfectant,
The disinfectant is
At least one selected from the group consisting of triazine-based preservatives, alkyl benzimidazole-based preservatives, isothiazoline-based preservatives, pyridine-based preservatives, phenol-based preservatives and pyrithion-based preservatives,
Water-soluble coolant composition.
7. The method of claim 1 or 6,
The rust preventive additive,
2-butyl-octanoic acid, 2-hexyl-octanoic acid, 2-decyl-tetradecanoic acid, oxal Oxalic acid, Malonic acid, Succinic acid, Glutaric acid, Adipic acid, Pimelic acid, Suberic acid, Azelaic acid (Azelaic acid), sebacic acid, Undecanedioic acid, Dodecanedioic acid, Brassylic acid, Tetradecanedioic acid, Thapsic acid , Japanic acid, Phellogenic acid, Equisetolic acid and 2,4,6-tri-(6-aminocaproic acid)-1,3,5-triazine (2 , 4,6-tri- (6-aminocaproic acid) -1,3,5-triazine) comprising at least one selected from the group consisting of,
Water-soluble coolant composition.
7. The method of claim 1 or 6,
The rust preventive additive,
Sebasic acid (Sebacic acid), undecanedioic acid (Undecanedioic acid), dodecanedioic acid (Dodecanedioic acid), brassylic acid (Brassylic acid) and tetradecanedioic acid (Tetradecanedioic acid) containing at least 3 or more selected from the group consisting of sign,
Water-soluble coolant composition.
7. The method of claim 1 or 6,
Among the rust preventive additives,
1% to 20% by weight of sebacic acid;
10% to 60% by weight of undecanedioic acid;
10% to 50% by weight of dodecanedioic acid;
less than 5% by weight of Brassylic acid; and
less than 5% by weight of Tetradecanedioic acid;
which includes,
Water-soluble coolant composition.
7. The method of claim 1 or 6,
The lubricity improving agent,
It contains a saturated fatty acid having 4 to 22 carbon atoms, an unsaturated fatty acid having 4 to 22 carbon atoms, or both,
The saturated fatty acids are, butyric acid, valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, isononano Isononanoic acid, Neodecanoic acid, Undecylic acid, Lauric acid, Tridecylic acid, Myristic acid, Pentadecylic acid acid), palmitic acid, margaric acid, stearic acid, nonadecylic acid, arachidic acid, Heneicisylic acid and at least one selected from the group consisting of behenic acid,
The unsaturated fatty acids are palmitoleic acid, oleic acid, linoleic acid, linolenic acid, stearidonic acid, Paulinic acid, Gondoic acid, Dihomo-γ-linolenic acid, Eicosapentaenoic acid, Mead acid, Cervonic acid, Erucic acid acid), docosatetraenoic acid (Docosatetraenoic acid) and nervonic acid (Nervonic acid) comprising at least one selected from the group consisting of,
Water-soluble coolant composition.
7. The method of claim 6,
pH antagonist; further comprising,
The pH constant agent includes amines,
The pH constant agent is included in 40% by weight or less of the water-soluble cutting oil composition,
Water-soluble coolant composition.
12. The method of claim 1 or 11,
The pH constant agent includes amines containing a hydroxyl group, amines not including a hydroxyl group, or both,
The hydroxyl group-containing amines include monoethanolamine, monoisopropanolamine, diglycolamine, diisopropanolamine, dioleylethanolamine, dilaurylpropanolamine, dioctylethanolamine, dibutylethanolamine, and diethylethanol. Amine, dimethylethanolamine, dihexylpropanolamine, dibutylpropanolamine, diethanolamine, oleyldiethanolamine, cyclohexyldiethanolamine, stearyldipropanolamine, lauryldiethanolamine, aminomethylpropanol, amino Ethylpropanediol, octyldipropanolamine, butylaminoethanol, butyldiethanolamine, methyldiethanolamine, benzyldiethanolamine, phenyldiethanolamine, tolyldipropanolamine, xylyldiethanolamine, triethanolamine, tripropanol containing at least one selected from the group consisting of amines, triisopropanolamine, and 3-amino-4 octanol,
The amines that do not include a hydroxyl group include at least one of a linear, cyclic, or branched saturated or unsaturated hydrocarbon group having 1 to 30 carbon atoms,
The hydrocarbon group includes a methyl group, an ethyl group, a propyl group, a butyl group, a hexyl group, a cyclohexyl group, a heptyl group, a cycloheptyl group, an octyl group, a nonyl group, a decyl group, an undecyl group, a dodecyl group, a tridecyl group, and a tetradecyl group. , pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group, nonadecyl group, eicosyl group, pentaeicosyl group, docosyl group, tricosyl group, tetracosyl group, pentacosyl group, hexacosyl group, heptacosyl group , octacosyl group, nonacosyl group, triacontyl group, hexenyl group, heptenyl group, octenyl group, nonenyl group, decenyl group, undecenyl group, dodecenyl group, tridecenyl group, tetradecenyl group, pentadecenyl group, hexadecenyl group Diary, heptadesenyl group, octadecenyl group, nonadesenyl group, eicosenyl group, heneicosenyl group, docosenyl group, tricosenyl group, tetracosenyl group, pentacosenyl group, hexacosenyl group, heptacosenyl group, octacosenyl group , which comprises at least one selected from the group consisting of a nonacosenyl group and a tricosenyl group,
Water-soluble coolant composition.
According to claim 1,
fungicides, anti-discoloration agents; or these two; further comprising,
The disinfectant and the discoloration inhibitor, each comprising 5% by weight or less of the composition,
Water-soluble coolant composition.
14. The method of claim 13,
The disinfectant is
At least one selected from the group consisting of triazine-based preservatives, alkyl benzimidazole-based preservatives, isothiazoline-based preservatives, pyridine-based preservatives, phenol-based preservatives and pyrithion-based preservatives,
Water-soluble coolant composition.
14. The method of claim 6 or 13,
The disinfectant is
Combination of 1,1'-oxybis[2-chloroethane] with N,N,N',N'-tetramethyl-1,2-ethanediamine polymer (N,N,N',N'-tetramethyl- 1,2-ethanediamine Polymer With 1,1'-oxybis[2-chloroethane]), tetrakis(hydroxymethyl)-phosphonium sulfate (THPS), 1,3,5-tris(2-hydroxyethyl)- s-triazine, iodopropynylbutylcarbamate, 1,2-benzisothiazolin-3-one, 2-butyl-1,2-benzisothiazolin-3-one, 2-methyl-1 ,2-Benzisothiazolin-3-one, 4,4-dimethyloxazolidine, 7-ethyl bicyclooxazolidine, 4-(2-nitrobutyl)-morpholine and 4,4'- Combination of (2-ethyl-2-nitrotrimethylene)-dimorpholine, 2-methyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazoline- Combination of 3-one and 2-methyl-4-isothiazolin-3-one, 2-bromo-2-nitro-1,3-propanediol, octylisothiazolinone, dichloro- Which comprises at least one selected from the group consisting of octyl isothiazolinone and dibromo-octyl isothiazolinone,
Water-soluble coolant composition.
14. The method of claim 13,
The discoloration inhibitor,
imidazoline, derivatives of pyrimidine, 1H-benzotriazole, tolyltriazole, butylbenzotriazole, mercaptobenzothiazole, dimercaptobenzothiazole, dimercaptothiazole, sodium phosphate salt, phosphate ester and It comprises at least one selected from the group consisting of derivatives thereof, amino silanes and derivatives thereof, metal or organic silicates and derivatives thereof,
Water-soluble coolant composition.
14. The method of claim 13,
The discoloration inhibitor, 1H- benzotriazole, mercaptobenzothiazole, dimercaptobenzothiazole, tolyltriazole, butylbenzotriazole and at least one selected from the group consisting of derivatives thereof,
Water-soluble coolant composition.
7. The method of claim 1 or 6,
The water-soluble cutting oil is of a neutral type,
Water-soluble coolant composition.