JPH10316989A - Water-dispersion-type lubricant for plastic working - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a lubricant which is not ignitable, does not pollute work environment, is excellent in lubricity and releasability, and can extend the life of a tool by dispersing an inorg. solid lucricant in a base oil contg. a highly basic alkali or alkaline earth metal salt of an org. acid and dispersing the resultant dispersion in water with a surfactant. SOLUTION: The inorg. solid lubricant (A) is a white or light-colored inorg. compd. in a range of from ultrafine particles to a powder, in a range of particle size of 0.005-50 μm, an example being surface-treated calcium carbonate. The highly basic alkali or alkaline earth metal salt (B) used has a base value of 40 mgKOH/g, and the org. acid for forming the salt is an 8-40C arom. sulfonic acid. The alkali metal for forming the salt is sodium, etc. A mineral oil is used as the base oil (C). The surfactant (D) used is an anionic surfactant. The lubricant comprises 0.1-10 wt.% ingredient A, 0.5-40 wt.% ingredient B, 1-50 wt.% ingredient C, 0.1-30 wt.% ingredient D, and water accounting for the rest.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricant for water-dispersed plastic working, and more particularly, to forging, rolling, and manufacturing a carbon steel, an alloy steel, a non-ferrous metal, etc. in a warm or hot state. Pipe, wire drawing,
The present invention relates to a lubricant used for plastic working such as extrusion. Lubricant of the present invention, lubricating between the tool or the tool and the workpiece during the plastic working, while reducing the friction between the tool and the workpiece during the processing, in addition to preventing seizure and improving the releasability, It is used for the purpose of improving the working environment in place of graphite-based lubricants.

[0002]

2. Description of the Related Art As a lubricating oil for plastic working of a metal in a warm state or a hot state, one in which graphite is dispersed in oil or water is used. Lubricating oils containing graphite as a main component pollute the working environment. Therefore, lubricating oils not using graphite are desired. In addition, the oil-dispersed type has good lubricity and is satisfactory to some extent in terms of tool life, but has problems of fire and smoke and poor cooling performance. On the other hand, the underwater dispersion type is excellent in cooling performance and there is no danger of fire, but is poor in lubricity and inferior in tool life. Therefore, the two are selectively used depending on the processing conditions. JP-A-3-115398 discloses that an inorganic solid lubricant (S) is dispersed in an oil-soluble extreme pressure agent (O), and the dispersion (S / O) is dispersed in a polymer dispersant. A water-soluble plastic working lubricant having the form of S / O / W, which is dispersed in an aqueous solution, is described. This lubricant has better lubricity than a normal water-soluble lubricant, but has a problem of polluting the working environment as described above because it is mainly composed of graphite.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to eliminate the danger of ignition, not to pollute the working environment, to have excellent lubricity and releasability, and to extend the life of a tool (die). To provide a lubricant for water-dispersion type plastic working which can be performed.

[0004]

The present invention comprises (a) an inorganic solid lubricant (S) and (b) a highly basic alkali metal organic acid salt and a highly basic alkaline earth metal organic acid salt. (C) dispersing in a base oil (O) containing at least one member selected from the group, and dispersing the dispersion (S / O) in water using a surfactant (d). An object of the present invention is to provide an aqueous dispersion type plastic working lubricant having a form of / O / W.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The (a) inorganic solid lubricant (S) used in the present invention includes white or light-colored inorganic compounds ranging from ultrafine particles to powder. Specific examples include surface-treated calcium carbonate, surface-treated sericite, surface-treated bentonite, boron nitride, and mixtures thereof. The particle diameter of these inorganic solid lubricants is preferably 0.005 to 50 μm, more preferably 0.01 to 50 μm.
５5 μm. Here, the surface treatment means a hydrophobizing treatment, and the surface hydrophobizing agent for calcium carbonate preferably includes petroleum resin acid, rosin, dimer acid, trimer acid and the like. Examples of the surface hydrophobizing agent for sericite preferably include acetates, hydrochlorides, and polyglycerin alkyl ester-based nonionic surfactants of aliphatic amines having 8 to 20 carbon atoms. As the surface hydrophobizing agent for bentonite, an organic amine is preferably used. Specific examples of commercially available surface-treated bentonite include organic amine-treated BENTONE 27, BENTONE.
ONE 34, RHEOLATE 101, RHEOLATE 350, RHEOLATE 5000
(Made by RHEOX).

The (b) highly basic alkali metal organic acid salt and highly basic alkaline earth metal organic acid salt used in the present invention preferably have a base number of at least 40 mg KOH / g, more preferably 100 mg KOH / g. / g or more, most preferably 150
mg KOH / g or more. Examples of the alkali metal of the highly basic alkali metal organic acid salt include sodium, potassium, lithium, and the like, and the organic acid salt includes an aromatic salt having 8 to 40 carbon atoms or an aliphatic sulfonate having 10 to 40 carbon atoms, Aromatic of number 8 to 40 or carbon number 10
And aliphatic carboxylate having -40, and phenate having 8 to 40 carbon atoms. Specific examples include highly basic sodium aromatic or aliphatic sulfonates, and commercially available products include LUBRIZOL 5318A (TBA = 450) (manufactured by LUBRIZOL) (highly basic sodium aromatic sulfonates). Examples of the alkaline earth metal of the highly basic alkaline earth metal organic acid salt include calcium, magnesium and barium, and the organic acid salt is an aromatic having 8 to 40 carbon atoms or an aliphatic having 10 to 40 carbon atoms. Examples thereof include sulfonates, aromatics having 8 to 40 carbon atoms or aliphatic carboxylates having 10 to 40 carbon atoms, and phenates having 8 to 40 carbon atoms. Specifically, as the sulfonate, a highly basic calcium sulfonate (BRYTON C-150, BRYTON C-400, BRYT
ON C-500: Witco, LUBRIZOL 5347, LUBRIZOL 528
3: Lubrizol), a highly basic calcium carboxylate (LUBRIZOL 5341, LUBRI)
ZOL 5341A: manufactured by Lubrizol, OSCA435B, OSCA 463: (manufactured by Oska Chemical), SAP005: manufactured by Shell Chemical Co., Ltd., and as a phenate, a highly basic calcium phenate (ADX-410J:
Adibis, OLOA 229, OLOA 218A: Olonite Japan).

The base oil (c) used in the present invention includes mineral oil, animal and vegetable fats and oils, synthetic esters and the like. As the mineral oil, a refined mineral oil of ISO VG 22 to ISO VG 460 is preferable, and any of a paraffinic type and a naphthenic type may be used. The animal and vegetable fats and oils preferably have a melting point of 30 ° C. or less and an iodine value of 60 to 150 I ₂ g / 100 g. As the synthetic ester, a straight-chain or branched-chain having 12 to 28 carbon atoms,
Saturated or unsaturated fatty acids (especially those having two or less double bonds) and alcohols having 1 to 28 carbon atoms, preferably monovalent to
Esters with tetrahydric alcohols are preferred, specifically fatty acid esters of trimethylolpropane (eg oleic acid full ester), mono-, di-, tri- or full esters of pentaerythritol fatty acids (eg oleic acid) And the like.

[0008] The surfactant (d) used in the present invention includes anionic surfactants, nonionic surfactants, and high molecular surfactants, and includes highly basic alkali metals or alkaline earth metals. Any base oil containing an organic acid salt can be emulsified or dispersed in water. Examples of the anionic surfactant include an alkali metal salt of an aromatic or aliphatic sulfonic acid (eg, sodium salt), an alkanolamine salt of an aromatic or aliphatic sulfonic acid (eg, triethanolamine salt), an aromatic or aliphatic carboxylic acid. Acid alkali metal salts (eg, potassium laurate, sodium oleate), alkanolamine salts of aromatic or aliphatic carboxylic acids and the like can be mentioned.

Examples of the nonionic surfactant include ester nonionic surfactants (eg, ethylene glycol dioleate, polyoxyethylene sorbitan monooleate) and ether nonionic surfactants (eg,
Polyoxyethylene nonylphenol ether). As the high molecular surfactant, the molecular weight is 5,
All surfactants having a function of dispersing an inorganic solid lubricant in water can be used. Preferably the molecular weight is 5,000 to 20,000.
And polysoap type polymer surfactants such as octylstyrene and sodium styrenesulfonate copolymer of No. 00, and sodium polyacrylate.

The lubricant of the present invention preferably contains a preservative. Preferred examples of such preservatives include hexahydro-1,3,5-tris (2-hydroxymethyl)-(s) -triazine, hexahydro-
1,3,5-tri-ethyl- (s) -triazine, hexahydrotriazine-oxazolidine derivatives and the like.

The lubricant of the present invention further comprises (f) a compound having 2 carbon atoms.
It is preferable to contain 0 or more alkenyl succinic anhydrides. By adding the component (f), the uniformity of the adhered film is improved, and as a result, the lubricity is stabilized and further improved. Further, the lubricant of the present invention further comprises at least one member selected from the group consisting of (g) an alkali metal salt of an aromatic carboxylic acid, (i) an alkali metal salt of an aliphatic carboxylic acid, and (j) a water-soluble adhesion improver. Is preferable. Examples of the alkali metal salt of an aromatic carboxylic acid as the component (g) include m-oxybenzoic acid, p-oxybenzoic acid,
Hydroxybenzoic acid such as 2,3-dioxybenzoic acid and gallic acid, terephthalic acid, isophthalic acid, trimellitic acid,
Examples thereof include sodium salts, potassium salts, and lithium salts such as pyromellitic acid. Examples of the aliphatic carboxylic acid alkali metal salt of the component (i) include aliphatic saturated dicarboxylic acids having 2 to 12 carbon atoms (for example, dodecane diacid, sebacic acid, suberic acid, adipic acid, succinic acid, diglycolic acid, etc. ), Aliphatic oxycarboxylic acids, for example, sodium, potassium and lithium salts of aliphatic oxycarboxylic acids having 2 to 12 carbon atoms (for example, citric acid, malic acid and the like). By adding this component (g) and / or (i) to the water that constitutes the lubricant, the visibility of the adhered coating on the tool surface (visually discriminate whether the coating is attached or not) Performance) and lubricity is further improved.

Examples of the water-soluble adhesion improver of component (J) used in the present invention include polyvinyl pyrrolidone, a water-soluble salt of a copolymer of olefin and maleic anhydride, a water-soluble salt of starch phosphate, and a trialkyl. Ammonium hydroxyalkyl ether starch, carboxymethyl cellulose,
Hydroxyethylcellulose, water-soluble salts of polyacrylic acid, polyvinyl alcohol and the like are mentioned. Examples of the water-soluble salts include alkali metal salts such as sodium salt, potassium salt and lithium salt, ammonium salts and amines (for example, monoethanolamine). , Ethylenediamine, dicyclohexylamine, etc.) salts. Among these, preferred are polyvinylpyrrolidone (average molecular weight of 160,000 to 360,000 by osmotic pressure method) and copolymer of isobutylene and maleic anhydride (average molecular weight of 80,000 to 170,000 by infrared spectroscopy). ).

In the lubricant of the present invention, (a) the amount of the inorganic solid lubricant is preferably 0.1 to 10% by weight, more preferably 1 to 6% by weight, and (b) a highly basic alkali metal organic compound. The amount of at least one selected from the group consisting of acid salts and highly basic alkaline earth metal organic acid salts is preferably 0.1%.
5 to 40% by weight, more preferably 5 to 20% by weight,
The amount of (c) the base oil is preferably 1 to 50% by weight, more preferably 2 to 25% by weight, and the amount of the (d) surfactant is preferably 0.1 to 30% by weight, more preferably 5% by weight. ~ 15
% By weight. The amount of the preservative of the component (e) is preferably 0.1 to 5% by weight, more preferably 1 to 2% by weight, and the component (f) is an alkenyl succinic anhydride having 20 or more carbon atoms. The amount is preferably 0.5 to 10% by weight, more preferably 1 to 5% by weight, and the amount of component (g) the alkali metal salt of an aromatic carboxylic acid and (i) the alkali metal salt of an aliphatic carboxylic acid is Each is preferably 0.05 to 35
%, More preferably 0.1 to 25% by weight. The amount of component (j) is preferably from 0.05 to 20% by weight, more preferably from 0.1 to 15% by weight. Also, component (a)
, The sum of component (b) and component (c), and component (g) and component (i)
And the weight ratio with respect to the sum of the components (j) is preferably 30
/ 1 to 1/30, more preferably 20/1 to 1/20
It is.

The lubricant of the present invention can be produced, for example, as follows. First, (a)
An inorganic solid lubricant (S), at least one selected from the group consisting of (b) a highly basic alkali metal organic acid salt and a highly basic alkaline earth metal organic acid salt, and (d) a surfactant (C) The base oil (O) is mixed and made into a slurry, and the slurry is homogenized using a flymer mill. Next, as a second step, the water obtained by dissolving or dispersing the remaining surfactant is added with the water homogenized in the first step, and the water is homogenized using a flymer mill to obtain an S / O / W type lubricant product. I do. Further, all of the surfactant may be added to the S / O system of the first stage, but when an anionic surfactant is used, a cation such as an alkali or an alkanolamine is added to the S / O system.
It is also preferable to generate an anionic surfactant in an S / O / W system by adding an anion, for example, a sulfonic acid or a carboxylic acid, to water dispersed in water in addition to the / O system. It should be noted that those in which all of the surfactants are dissolved or dispersed in water and mixed with an S / O system to form a lubricant product have poor emulsification or dispersion stability of the diluent. The lubricant of the present invention may further contain additives commonly added to lubricants, such as rust preventives. The lubricant of the present invention may be supplied to a lubricated portion by spraying or the like, as it is or after further dilution with water as needed.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

【Example】

[Examples 1 to 15, 18 to 22] As shown in Tables 1 to 3, (a) an inorganic solid lubricant (S), and (b) a highly basic alkali metal organic acid salt and a highly basic alkaline earth metal organic And (c) a base oil (O) containing at least one selected from the group consisting of acid salts and (d) a part of a surfactant (60% by weight of the total amount used) to form a slurry. The product was subjected to a two-pass treatment at a temperature of 100 ° C. or lower using a flymer mill to make it uniform.
Next, in water in which the remaining surfactant is dissolved or dispersed,
Add the homogenized one first, and use a flymer mill to add 5
One pass treatment was performed at 0 ° C. or lower to homogenize, and an S / O / W type lubricant product was obtained.

[Examples 16 and 17] As shown in Table 3, (a) an inorganic solid lubricant, (b) a highly basic alkaline earth metal organic acid salt, (c) a base oil, and (d) an interface A mixture of a part of the activator (60% by weight of the total amount used) and (f) alkenyl succinic anhydride was made into a slurry, and the slurry was homogenized by two-pass treatment at 100 ° C. or lower using a flymer mill. . next,
The remaining surfactant (40% by weight of the total amount used), (e) a preservative and water obtained by homogenizing water in advance were added, and homogenized by a general low-speed stirrer (300 rpm), and S / O / W A type of lubricant product was obtained.

[Comparative Examples 1 and 2] A surfactant was prepared by uniformly dissolving or dispersing a surfactant in a highly basic alkaline earth metal organic acid salt and a base oil.
While stirring at 2,000 rpm or more), water in which a preservative was dissolved was gradually added to make uniform, and an O / W type lubricant product was obtained. [Comparative Examples 3 and 4] A water-soluble polymer compound, a surfactant, and a preservative are previously uniformly dissolved or dispersed in water, and the resulting mixture is homogenized (3000 rpm or more).
Add the inorganic solid lubricant gradually while stirring with
An S / W type lubricant product was obtained. [Comparative Examples 5 to 7] An alkali metal salt of an aromatic carboxylic acid was dissolved in water, then a water-soluble polymer compound was dissolved or dispersed, and finally a preservative was dissolved to obtain a W-type lubricant product. . Comparative Example 8 A commercially available graphite-based water-dispersed hot forging oil was used.

With respect to the above-mentioned lubricant, the dispersion form and appearance (the lubricant products of Examples and Comparative Examples diluted by 20 times with water, ie, a 5% by weight aqueous solution) were observed, and the lubricant was evaluated by the following method. did. [Lubricity test] Compression rate 90% with 160 Ton press
The clearance is set in advance, and the teto splice (cylinder) is compressed under the following conditions, and the magnification of the upper surface of the cylinder is determined by the following equation. Surface area expansion rate (times) = (upper surface area after processing) × 4 / (upper surface area before processing) The larger the surface area expansion rate, the better the lubricity. A preferable lubricant has a surface area expansion rate of 16 times or more. [Test conditions] Press machine: KOMATSU MAYPRES (MKN-160) Specimen: S45C, 1200 ° C, 17φmm × 30mm Die: SKD-61, 150 ° C Lubrication: Air spray (3 kg / cm ² ), 2 ml each for upper and lower compression Rate: 90% setting

[0019]

[Table 1] ExamplesComponent 1 2 3 4 5 6 7 8 (a) Inorganic solid lubricant Surface treated calcium carbonate 5.0 − − − 5.0 5.0 − − Surface treated sericite − 5.0 − − − − − − Surface treated bentonite − − 5.0 − − − 5.0 5.0 Boron nitride---5.0---- (b) Alkaline and alkaline earth metal salts (1) 20.0---10.0 10.0 10.0-(2)-20.0--10.0 10.0-10.0 (3)--20.0----10.0 (4)---20.0--10.0- (c) Base oil (1) 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 (d) Surfactant (1) 3.0 9.0 9.0 9.0 6.0 6.0 6.0 9.0 (2) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 4.0 (3) 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 (e) Preservative (1) 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 (f) Alkenyl succinic anhydride − − − − − 3.0 3.0 3.0 Water 63.5 57.5 57.5 57.5 60.5 57.5 57.5 53.5 Dispersion form S / O / WS / O / WS / O / WS / O / WS / O / WS / O / WS / O / WS / O / W Appearance White White White White White White White White Lubricity (surface area expansion rate) 16.9 16.4 16.5 17.2 17.0 17.3 16.9 16.8

[0020]

Table 2 Example components 9 10 11 12 13 14 15 (a) Inorganic solid lubricant Surface-treated calcium carbonate 5.0 2.0 2.0-0.5-2.0 Surface-treated bentonite -------Boron nitride---1.0- 1.0 − (b) Alkaline and alkaline earth metal salts (1) 10.0 − 5.0 5.0 20.0 2.0 − (2) 10.0 10.0 5.0 − − − 5.0 (3) − − − 5.0 − 2.0 − (4) − − − − − − − (C) Base oil (1) 2.0 5.0 5.0 5.0 2.0 5.0 − (2) − − − − − − 20.0 (d) Surfactant (1) 7.0 6.0 3.0 3.0 3.0 3.0 5.0 (2) 3.0 2.0 1.5 1.5 3.0 1.5 2.5 (3) 2.0 1.5 1.5 1.5 2.0 1.5 2.5 (e) Preservative (1) 1.5---1.5-1.5 (2) -1.0 1.0 1.0-1.0- (f) Alkenyl succinic anhydride 3.0 1.0 1.0 1.0 − 1.0 1.0 (g) Aromatic carboxylate (1) 2.0 − − 1.0 − 1.0 1.0 Water 54.5 71.5 75.0 75.0 68.0 81.0 59.5 Dispersion form S / O / WS / O / WS / O / WS / O / WS / O / WS / O / WS / O / W Appearance White White White White White White White Lubricity (expansion of surface area) 17.5 16.0 16.3 16.1 16.0 16.0 16.1

[0021]

[Table 3] Example components 16 17 18 19 20 21 22 (a) Inorganic solid lubricant Surface-treated calcium carbonate 10.0 6.5 2.5-1.0 0.2 0.2 Boron nitride-5.0-0.2--- (b) Alkaline alkaline earth Metal salt (1)--5.0-1.0 0.4 0.3 (2)--8.5-2.0 0.6-(3) 20.0 10.0-1.0--0.3 (4)------0.3 (c) Base oil (1) 35.0 46.5 1.5 1.0 2.0 1.0 2.0 (2) 10.0------ (d) Surfactant (1) 2.0 2.0 7.5 1.0 6.0 0.6 0.5 (2)--2.0 0.5 3.0 0.2-(3) 8.0 13.0 1.5 1.0 2.0 0.2 0.2 (4) 10.0 10.0--1.5-- (5)-3.0-1.0 1.5-0.3 (e) Preservative (1) 1.5 1.5 1.0 1.0 1.5 0.5 1.0 (f) Alkenyl succinic anhydride 3.0 2.0 1.5- − 0.1 0.1 (g) Aromatic carboxylate (1) − − − − − 20.0 9.0 5.0 (3) − − − − − − − 5.0 (i) Aliphatic carboxylate (1) − − − 20.0 − 9.0 5.0 ( 2) − − − − − − 5.0 (j ) Water-soluble adhesion improver (1) ----- 5.0 5.0 Water 0.5 0.5 69.0 73.3 58.5 73.2 69.8 Dispersion form S / O / WS / O / WS / O / WS / O / WS / O / WS / O / WS / O / W appearance White White White White White White White Lubricity (Surface expansion rate) 17.5 17.6 16.8 16.3 16.5 16.8 16.5

[0022]

(Table 4) Comparative Example Components 1 2 3 4 5 6 7 8 (a) Inorganic solid lubricant Surface-treated calcium carbonate--10.0 -----Boron nitride---3.0---- (b) Alkaline Alkaline earth metal salt (4) 20.0------- (c) Base oil (1) 2.0 10.0 ------(2)-29.5------ (d) Surfactant ( 1) 6.0 5.0 5.0 3.0 − − − − (2) 2.0 2.0 1.0 1.0 − − − − (3) 2.0 2.0 1.0 1.0 − − − − (e) Preservative (1) 1.5 1.5 0.3 0.3 0.3 0.3 0.3 − (g ) Aromatic carboxylate (1)----2.0 15.5--(2)--1.0---17.0- (3 )---- 10.0 ---(h) Rust inhibitor (1)-- ---0.5 0.5- (j) Adhesion enhancer (2)------1.5- (3) --- 8.0 15.0 8.0-- Water 66.5 50.0 81.7 83.7 72.7 75.7 80.7- Dispersion form O / WO / WS / WS / WWWWS / W Appearance White White Color White White Colorless Colorless Colorless Black Lubricity (Enlargement of surface area) 15.6 13.7 15.4 15.2 14.8 15.0 14.5 17.4

(A) Inorganic solid lubricant Surface treated calcium carbonate (Calcium carbonate treated with petroleum resin acid) Surface treated sericite (Serisite treated with stearylamine acetate) Surface treated bentonite (RHEOLATE 350: manufactured by RHEOX) (b) Alkaline and alkaline earth metal salts (1) Highly basic sodium sulfonate (LUBRIZOL 518)
3A: manufactured by Lubrizol: base number 450) (2) Highly basic calcium sulfonate (BRYTON C-400)
: Witco: base number 400) (3) Highly basic calcium phenate (ADX-410J: Adi
bis company: base number 400) (4) Highly basic calcium carboxylate (LUBRIZOL)
5341: Lubrizol: base number 400) (c) Base oil (1) Refined mineral oil (ISO VG 46) (2) Trimethylolpropane oleate

(D) Surfactant (1) Sodium petroleum sulfonate (average molecular weight 450, base number 0.5) (2) Sodium oleate (3) Polyoxyethylene nonyl phenyl ether (the number of moles of ethylene oxide added = 9) ( 4) Polyoxyethylene sorbitan oleate (the number of moles of ethylene oxide added = 20) (5) Polymeric surfactant: copolymer of octylstyrene and sodium styrenesulfonate (average molecular weight 20,000)
0) (e) Preservative (1) Grotan BK: hexahydro-1,3,5-tris (2-hydroxyethyl)-(s) -triazine: Schu
lke & Mayer (2) Vancide TH: Hexahydro-1,3,5-tri-
Ethyl- (s) -triazine: manufactured by RT Vanderbilt (f) Alkenyl succinic anhydride: C ₇₂ alkenyl succinic anhydride (g) Aromatic carboxylate (1) Sodium trimellitate (2) Sodium isophthalate ( 3) Sodium m-oxybenzoate (h) Rust inhibitor (1) Sodium dodecane diacid (i) Aliphatic carboxylate (1) Sodium adipate (2) Sodium citrate (j) Water-soluble adhesion enhancer ( 1) Polyvinylpyrrolidone (average molecular weight 160,000) (2) Hydroxyethyl cellulose (average molecular weight 70,000)
0) (3) Sodium salt of copolymer of isobutylene and maleic anhydride (average molecular weight 165,000)

Claims (10)

[Claims] 1. An inorganic solid lubricant (S) comprising at least one member selected from the group consisting of (b) a highly basic alkali metal organic acid salt and a highly basic alkaline earth metal organic acid salt. (C) is dispersed in the base oil (O), and the dispersion (S /
O) is dispersed in water using (d) a surfactant,
An aqueous dispersion type plastic working lubricant having the form of S / O / W. 2. An inorganic solid lubricant is selected from the group consisting of 0.1 to 10% by weight of an inorganic solid lubricant, and (b) a highly basic alkali metal organic acid salt and a highly basic alkaline earth metal organic acid salt. 0.5 to 40% by weight of at least one kind and 1 to 50% of the base oil (c)
2. The lubricant according to claim 1, wherein the lubricant comprises 0.1 to 30% by weight of the surfactant (d), and the balance is water. 3. An inorganic solid lubricant, wherein the inorganic solid lubricant is at least one selected from the group consisting of surface-treated calcium carbonate, surface-treated sericite, surface-treated bentonite, and boron nitride.
3. The lubricant of claim 1 or 2, which is a seed. (B) at least one selected from the group consisting of a highly basic alkali metal organic acid salt and a highly basic alkaline earth metal organic acid salt, wherein the highly basic sodium sulfonate, the highly basic calcium sulfonate, The lubricant according to any one of claims 1 to 3, wherein the lubricant is at least one selected from the group consisting of overbased calcium phenate and overbased calcium carboxylate. 5. The method according to claim 1, wherein (c) the base oil is at least one selected from the group consisting of mineral oil, animal and vegetable fats and oils, trimethylolpropane fatty acid ester, and pentaerythritol fatty acid ester. Lubricant. 6. The surfactant (d) is at least one selected from the group consisting of an anionic surfactant, an ester-based nonionic surfactant, an ether-based nonionic surfactant, and a polymer-based surfactant. The lubricant according to any one of claims 1 to 5, wherein 7. The method according to claim 1, further comprising (e) a preservative.
The lubricant according to any one of claims 6 to 10. (E) the preservative is hexahydro-1,3,3;
5-tris (2-hydroxymethyl)-(s) -triazine, hexahydro-1,3,5-tri-ethyl-
The lubricant according to any one of claims 1 to 7, wherein the lubricant is at least one selected from the group consisting of (s) -triazine and a hexahydrotriazine-oxazolidine derivative. 9. The method according to claim 1, further comprising (f) an alkenyl succinic anhydride having 20 or more carbon atoms.
The lubricant described in the item. 10. Further, (g) an alkali metal salt of an aromatic carboxylic acid, (i) an alkali metal salt of an aliphatic carboxylic acid, and
(j) The lubricant according to any one of claims 1 to 9, comprising at least one member selected from the group consisting of water-soluble adhesion improvers.