lubricant

Abstract

To provide a lubricant that can effectively impart water lubricity to a variety of target surfaces (targets).SOLUTION: The present invention is a lubricant including a compound that is represented by a formula 1. (In the formula, R1 and R2 are each a C6-24 hydrocarbon group, A1O and A2O are each a C2-4 alkyleneoxy group, x1 and x2 are an average number of moles added and are each a number from 0 to 10, and M is a positive ion).SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to lubricants, lubricant compositions, and methods for treating objects. [Background technology]

[0002] Known methods for modifying the surface of solid objects such as hard articles and textile products include, for example, water-repellent treatment and hydrophilic treatment. Water-repellent treatment is a technique for imparting water repellency to solid surfaces such as glass, metal, and textiles, thereby preventing the adhesion of water-borne contaminants. On the other hand, hydrophilic treatment is a technique for reducing the contact angle of a solid surface with water, thereby making the solid surface more easily wetted by water. These treatments are known to contribute, for example, to preventing the adhesion of contaminants and facilitating the removal of contaminants.

[0003] Patent Document 1 discloses a textile product to which one or more antibacterial agents selected from metal oxides, pyridine compounds, and cationic polymers, and one or more compounds selected from water absorbents, nonionic softeners, and cationic softeners are added, the textile product having a water absorption rate of 40 seconds or less according to the JIS L1907 (2010) dropping method, and a diffusible residual moisture content of 50% or less.

[0004] Patent Document 2 discloses a method for modifying a fiber material, in which the fiber material is treated in a bath of an alkaline aqueous solution containing a fiber material modifier containing a reaction product of a predetermined tertiary amine and epihalohydrin, and then further treated in a bath containing one or more compounds selected from anionic compounds or amphoteric compounds.

[0005] Patent Document 3 discloses a hydrophilic treatment agent containing, under specified conditions, an aqueous resin dispersion (A) containing, as a resin solid content, an ethylene-vinyl alcohol copolymer (A1) and a radical polymer (A2) having structural units derived from a radically polymerizable carboxylic acid monomer (A2-1), crosslinkable fine particles (B), and a polyetheramine (C).

[0006] Patent Document 4 discloses a method for producing a water-repellent / oil-repellent coating, which includes the steps of dissolving a specific organosilane compound in an organic solvent to produce a precursor solution, and applying the precursor solution to the surface of a solid. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-120984 [Patent Document 2] Japanese Patent Application Laid-Open No. 2012-67431 [Patent Document 3] Japanese Patent Application Publication No. 2020-200407 [Patent Document 4] Japanese Patent Application Laid-Open No. 2014-185334 Summary of the Invention [Problem to be solved by the invention]

[0008] There are few known chemicals that can efficiently impart lubricity to various target surfaces in a simple manner. When performing water-repellent treatment, the surface is coated with a low-surface-energy substance terminated with an alkyl group or a perfluoroalkyl group, but this often requires a chemical reaction, and it is difficult to effectively impart lubricity when treating an item in water, for example.

[0009] The present invention provides a lubricant that can effectively impart lubricity to water to various target surfaces (objects). [Means for solving the problem]

[0010] The present invention relates to a lubricant containing (A) a compound represented by the following formula 1 (hereinafter referred to as component (A)).

[0011] [ka]

[0012] [In the formula, R 1 and R 2 are hydrocarbon groups having 6 to 24 carbon atoms, and A 1 O and A 2 Each O is an alkyleneoxy group having 2 to 4 carbon atoms, x1 and x2 are the average number of moles added and are each a number of 0 to 10, and M is a cation.

[0013] The present invention also relates to a lubricant composition containing component (A).

[0014] The present invention also relates to a method for treating an object, which comprises adhering component (A) and water to the object to form a synovial surface on the object against water. [Effects of the Invention]

[0015] According to the present invention, a lubricant is provided that can effectively impart lubricity to water to various target surfaces (objects). DETAILED DESCRIPTION OF THE INVENTION

[0016] [Lubricant] The present invention relates to a lubricant containing a compound represented by formula 1 above. The lubricant of the present invention is an agent that can impart lubricity to water to an object, and contains the compound of component (A) as its active ingredient. The lubricant of the present invention may consist of component (A), or may contain one or more types of component (A), or may consist of one or more types of component (A).

[0017] Component (A) is a sulfosuccinate salt with two hydrocarbon groups that has a specific structure, and can provide the target object with excellent lubricity against water. The reason for this effect is not clear, but it is thought to be as follows: Component (A) is a sulfosuccinate salt with two hydrocarbon groups, so it is easy for it to have a large critical packing parameter (CPP), and it is able to easily lubricate hardness components (e.g., Ca) present in water. 2+Even in the presence of ), stable vesicles can be formed in water, forming a wet lubricating film (wet lubricating layer) on the surface of an object. Once the wet lubricating film is formed, water slides along the film and is drained away. This is different from conventional water drainage due to diffusion, as the film functions as a lubricating surface. It is believed that the wet lubricating film, while containing water, has a strong tendency to repel water from the outside without absorbing it. For example, when component (A) is applied to a textile product in water and then the textile product is removed, water slides down through the gaps between the fibers under gravity, promoting water desorption. In other words, the lubricant of the present invention can separate water in liquid form from an object. The reason why the sulfosuccinate salt of component (A) can impart excellent lubricity to water to an object is presumed to be as described above.

[0018] In formula 1, R 1 and R 2 may be the same or different and each is a hydrocarbon group having 6 to 24 carbon atoms. Examples of the hydrocarbon group include an alkyl group and an alkenyl group.

[0019] In formula 1, R 1 and R 2 The number of carbon atoms in the hydrocarbon group is 6 or more, preferably 8 or more, more preferably 9 or more, and even more preferably 10 or more from the viewpoint of lubricity in water, and is 24 or less, preferably 20 or less, more preferably 17 or less, and even more preferably 12 or less from the viewpoint of dispersibility in water. In formula 1, R 1 and R 2 From the viewpoints of lubricity to water, water-shedding ability, and dispersibility in water, the number of carbon atoms in the hydrocarbon group is preferably 10 or more, and preferably 14 or less, and more preferably 12 or less. Here, water-shedding ability means the ability of water to be shed from an object when the object comes into contact with water after being treated with the lubricant of the present invention.

[0020] In formula 1, R 1 and R 2From the viewpoint of lubricity in water, the total number of carbon atoms is preferably 18 or more, more preferably 20 or more, and from the same viewpoint, it is preferably 30 or less, more preferably 28 or less, even more preferably 26 or less, still more preferably 24 or less, and still more preferably 22 or less. 1 and R 2 When the lubricant contains two or more compounds with different total carbon numbers, 1 and R 2 The total number of carbon atoms in each compound is R 1 and R 2 represents the molar average of the total number of carbon atoms.

[0021] In formula 1, R 1 and R 2 The hydrocarbon groups of R may be either linear or branched, but preferably contain branched chains from the viewpoint of dispersibility in water. 1 and R 2 When the hydrocarbon group is a branched chain, it preferably has a side chain having 2 or more carbon atoms, more preferably 3 or more carbon atoms, from the viewpoint of lubricity to water. The number of carbon atoms in the side chain may be 10 or less, further 8 or less, and further 6 or less. 1 and R 2 The carbon atom bonded to the oxygen atom (O) in the hydrocarbon group is the first carbon atom, and the longest chain of carbon atoms is called the main chain. The number of carbon atoms in the main chain is X(R 1 and R 2 (Since the number of carbon atoms is 6 or more, X is 3 or more), the hydrocarbon groups bonded to any of the carbon atoms 1 to X-1 of the main chain are called side chains. In formula 1, R 1 and R 2 The hydrocarbon group may be either saturated or unsaturated, but in the case of a straight chain, it is preferred that it contains unsaturation from the viewpoint of dispersibility in water. Therefore, in the formula 1, R 1 and R 2 At least one of the groups is preferably a hydrocarbon group having a branched structure or an unsaturated bond. In formula 1, R 1 and R2 From the viewpoint of lubricity to water, the hydrocarbon group more preferably contains a saturated branched chain hydrocarbon group or an unsaturated straight chain hydrocarbon group. Also, R 1 and R 2 When the hydrocarbon group is a branched hydrocarbon group, it may be a group derived from Guerbet alcohol from the viewpoints of lubricity in water and availability. Also, R 1 and R 2 When the hydrocarbon group is a branched-chain hydrocarbon group having 10 carbon atoms, it may be a group derived from a branched-chain alcohol having 10 carbon atoms, such as isodecanol (e.g., decyl alcohol manufactured by KH Neochem Co., Ltd.), from the viewpoints of lubricity in water and availability. In formula 1, R 1 and R 2 From the viewpoint of lubricity to water, each of the hydrocarbon groups is preferably a branched chain hydrocarbon group, and more preferably a saturated branched chain hydrocarbon group.

[0022] Component (A) is R in Formula 1 1 and R 2 However, it is preferable that each of them is independently a branched chain alkyl group having 10 to 12 carbon atoms, and more preferably a compound in which the branched chain alkyl group has 10 carbon atoms. In the present invention, hydrocarbon residues obtained by removing a hydroxyl group from a secondary alcohol are included in the branched chain hydrocarbon groups such as branched alkyl groups. R 1 and R 2 are each a branched-chain alkyl group having 10 to 12 carbon atoms, the total number of carbon atoms constituting the side chains may be the same or different, and from the viewpoint of lubricity in water, is preferably 1 or more, more preferably 2 or more, and is preferably 4 or less, more preferably 3 or less, and even more preferably 3. In the present invention, the total number of carbon atoms constituting the side chains refers to the total number of carbon atoms in all side chains other than the main chain in one branched-chain alkyl group, and when there are multiple side chains, it refers to the total number of carbon atoms in all of those side chains. R 1 and R 2The number of side chains R may be the same or different, and from the viewpoint of lubricity in water, is 1 or more, preferably 3 or less, more preferably 2 or less. 1 and R 2 From the viewpoint of lubricity in water, the number of side chains is preferably 1 for each of the above. In the present invention, the number of side chains refers to the number of side chains branching from the main chain, and the number of side chains does not change even if the side chains have further side chains branching from the side chains. However, although the side chains may have further side chains branching from the side chains, it is preferable that the side chains are linear from the viewpoint of lubricity against water. R 1 and R 2 are each independently a branched alkyl group having 10 to 12 carbon atoms, R 1 and R 2 The number of branched carbon atoms in R may be the same or different, and from the viewpoint of lubricity in water, is 1 or more, preferably 3 or less, and even more preferably 2 or less. 1 and R 2 From the viewpoint of lubricity in water, the number of branched carbon atoms in each of the above is preferably 1. In the present invention, the number of branched carbon atoms refers to the total number of tertiary carbon atoms and quaternary carbon atoms in the branched alkyl group. R 1 and R 2 A more preferred embodiment of the above, from the viewpoint of lubricity to water, is a branched-chain alkyl group having 10 to 12 carbon atoms, wherein the number of carbon atoms in the main chain is independently 7 or 8, the number of carbon atoms constituting the side chains is independently preferably 1 to 4, more preferably 2 to 4, even more preferably 2 to 3, and still more preferably 3, and the number of side chains is independently preferably 3 or less, more preferably 2 or less, and even more preferably 1. R 1 and R 2From the viewpoint of lubricity in water, the branched alkyl groups selected from branched decyl groups and branched dodecyl groups are preferred, with branched decyl groups being more preferred. Examples of branched decyl groups include 2-propylheptyl groups and groups derived from decyl alcohol manufactured by KH Neochem Corporation, with 2-propylheptyl being preferred. Examples of branched dodecyl groups include 2-butyloctyl groups. R 1 and R 2 Each of the hydrocarbon groups may be a branched chain hydrocarbon group having 10 to 12 carbon atoms derived from Guerbet alcohol.

[0023] In formula 1, R 1 The hydrocarbon group and R 2 The hydrocarbon groups in R may be the same or different. 1 The hydrocarbon group and R 2 In the case where the hydrocarbon groups of R are different from each other, this is preferable from the viewpoint of dispersibility in water. 1 The hydrocarbon group and R 2 In view of lubricity in water, it is preferable that the hydrocarbon groups in the formula 1 are the same. 1 The number of carbon atoms and R 2 The carbon numbers of R may be the same or different. 1 The number of carbon atoms and R 2 In terms of dispersibility in water, it is preferable that the carbon numbers of R are different. 1 The number of carbon atoms and R 2 When the carbon numbers of and are the same, it is preferable from the viewpoint of lubricity to water.

[0024] In formula 1, R 1 and R 2 When the hydrocarbon group contains a branched chain, the degree of branching defined by the following formula is, from the viewpoint of lubricity to water, preferably 0.3 or less, more preferably 0.2 or less, even more preferably 0.1 or less, and even more preferably 0.08 or less, and from the viewpoint of lubricity to water, is preferably 0.01 or more, more preferably 0.02 or more, and even more preferably 0.04 or more. Degree of branching = (R 1 and R 2 (total number of terminal methyl groups)-2) / (R1 and R 2 (total number of carbon atoms) The branching degree is 1 It is an average value that can be measured using H-NMR.

[0025] The component (A) is a compound represented by the formula 1, 1 and R 2 are hydrocarbon groups of the same structure, and R 1 and R 2 may be one or more compounds selected from compounds in which Ingredient (A) is selected from the group consisting of R 1 and R 2 are hydrocarbon groups of the same structure. From the viewpoint of dispersibility in water, component (A) is R 1 and R 2 are hydrocarbon groups having different structures. For example, the lubricant of the present invention may be 1 and R 2 a compound represented by the formula 1 in which R 1 and R 2 may contain a compound represented by the formula 1 in which

[0026] In formula 1, A 1 O, A 2 O is an alkyleneoxy group having 2 to 4 carbon atoms, preferably 2 or 3 carbon atoms in view of lubricity to water. 1 O, A 2 Each represents the average number of moles of O added, and is from 0 to 10, and from the viewpoint of lubricity in water, is preferably 6 or less, more preferably 4 or less, even more preferably 2 or less, with 0 being even more preferred.

[0027] In formula 1, M is a cation. M is preferably a cation other than a hydrogen ion. Examples of M include alkali metal ions such as lithium ion, sodium ion, and potassium ion, alkaline earth metal ions such as calcium ion and barium ion, and organic ammonium ions such as triethanolammonium ion, diethanolammonium ion, monoethanolammonium ion, trimethylammonium ion, and monomethylammonium ion. From the viewpoint of dispersibility in water, M is preferably an alkali metal ion or an alkanolammonium ion, more preferably a sodium ion, a potassium ion, a triethanolammonium ion, a diethanolammonium ion or a monoethanolammonium ion, and even more preferably a sodium ion.

[0028] From the viewpoint of imparting lubricity to water, the component (A) of the present invention is preferably a compound represented by the following formula 1-1. That is, the present invention provides a lubricant containing a compound represented by the following formula 1-1. The compound of formula 1-1 is a compound in which x1 and x2 in formula 1 are each 0.

[0029] [ka]

[0030] [In the formula, R 1 and R 2 are hydrocarbon groups having 6 to 24 carbon atoms, and M is a cation. R in Formula 1-1 1 , R 2 Specific and preferred examples of M are the same as those of formula 1.

[0031] Component (A) can be synthesized by known methods. For example, it can be obtained by reacting a maleic acid diester, obtained by reacting maleic anhydride with an alcohol, with a hydrogen sulfite. In this case, by using alcohols with different carbon numbers or structures, it is possible to obtain compounds in which R1 and R2 in Formula 1 are hydrocarbon groups with different structures. Component (A) can be synthesized, for example, by the method described in Examples 2 and 3 of U.S. Patent Application Publication No. 2007 / 0214999.

[0032] Suitable alcohols for use in producing the component (A) are, from the viewpoint of reactivity during production and from the viewpoint of obtaining a component (A) that can impart excellent synovial properties to water, (1) Primary alcohols such as 2-propylheptan-1-ol, 2-butyloctan-1-ol, and branched-chain decyl alcohol (e.g., decyl alcohol manufactured by KH Neochem Co., Ltd.), (2) Secondary alcohols such as 5-nonanol and 2,6-dimethyl-4-heptanol Examples include:

[0033] From the viewpoint of lubricity to water, the lubricant of the present invention is preferably such that component (A) is a compound selected from bis-(2-propylheptyl)sulfosuccinic acid, bis-(2-butyloctyl)sulfosuccinic acid, and salts thereof, and more preferably a compound selected from bis-(2-propylheptyl)sulfosuccinic acid and salts thereof. That is, the lubricant of the present invention includes a lubricant containing a compound selected from bis-(2-propylheptyl)sulfosuccinic acid, bis-(2-butyloctyl)sulfosuccinic acid, and salts thereof, preferably a compound selected from bis-(2-propylheptyl)sulfosuccinic acid and salts thereof. Furthermore, the lubricant of the present invention includes a lubricant consisting of a compound selected from bis-(2-propylheptyl)sulfosuccinic acid, bis-(2-butyloctyl)sulfosuccinic acid, and salts thereof, preferably a compound selected from bis-(2-propylheptyl)sulfosuccinic acid and salts thereof. The matters described for the lubricant of the present invention also apply to these lubricants.

[0034] The lubricant of the present invention can be used for various articles, such as hard articles and fibers.

[0035] Examples of hard articles include tableware, cooking utensils, storage containers, bathtubs, toilets, vehicles, ships, bridges, embankments, towers, monuments, roofs, floors, walls, windows, furniture, tools, machine tools, electrical appliances, etc. Examples of materials for hard articles include materials selected from plastics, metals, ceramics, lacquer, wood, glass, rubber, carbon materials, and combinations thereof.

[0036] Examples of plastics include thermoplastic resins such as polyethylene, polypropylene, polystyrene, acrylonitrile-styrene resin, acrylonitrile-butadiene-styrene resin, polyvinyl chloride, polyvinylidene chloride, acrylic resin, polyvinyl alcohol, polyvinyl acetate, polyamide, polyacetal, polycarbonate, polyethylene terephthalate, polybutylene terephthalate, polyphenylene sulfide, polyimide, polyetherimide, polytetrafluoroethylene, polyether ether ketone, polyarylate, polysulfone, and polyethersulfone, and thermosetting resins such as phenolic resin, urea resin, melamine resin, polyurethane, silicone resin, epoxy resin, and unsaturated polyester.

[0037] Examples of metals include steel, stainless steel (SUS304, etc.), aluminum, copper, magnesium, silicon, lead, nickel, titanium, zinc, molybdenum, carbon, gold, silver, platinum, and palladium.

[0038] Examples of ceramics include oxides (alumina, zirconia, titania, barium titanate, forsterite, steatite, ferrite, etc.), hydroxides (hydroxyapatite, etc.), carbides (silicon carbide, titanium carbide, boron carbide, etc.), nitrides (silicon nitride, aluminum nitride, titanium nitride, etc.), and sulfides (molybdenum disulfide, cadmium sulfide, etc.).

[0039] Examples of wood include cedar, cypress, ash, oak, birch, zelkova, beech, oak, Douglas fir, Japanese larch, oak, yellow pine, maple, teak, hemlock, walnut, lauan plywood, and Chinese plywood.

[0040] Examples of glass include soda-lime glass, borosilicate glass, aluminosilicate glass, phosphate glass, quartz glass, and lead glass.

[0041] Examples of rubber include natural rubber and synthetic rubber. Examples of natural rubber include high-purity natural rubber, epoxidized natural rubber, hydroxylated natural rubber, hydrogenated natural rubber, and grafted natural rubber. Examples of synthetic rubber include butadiene rubber, butyl rubber, styrene butadiene rubber, nitrile rubber, acrylic rubber, chloroprene rubber, chlorobutyl rubber, ethylene-propylene rubber, ethylene vinyl acetate rubber, chlorosulfonated polyethylene rubber, epichlorohydrin rubber, polysulfide rubber, silicone rubber, fluororubber, and urethane rubber.

[0042] Examples of carbon materials include fullerene, carbon nanotube, graphene, graphene oxide, diamond, graphite, carbon black, and carbon fiber.

[0043] The lubricant of the present invention is suitable for use with fibers. Fibers, such as natural fibers, synthetic fibers, and semi-synthetic fibers, can be used as the target. Furthermore, the lubricant of the present invention can also be used for textile products containing these fibers.

[0044] The fibers may be either hydrophobic or hydrophilic. Examples of hydrophobic fibers include protein fibers (milk protein casein fibers, Promix, etc.), polyamide fibers (nylon, etc.), polyester fibers (polyester, etc.), polyacrylonitrile fibers (acrylic, etc.), polyvinyl alcohol fibers (vinylon, etc.), polyvinyl chloride fibers (polyvinyl chloride, etc.), polyvinylidene chloride fibers (vinylidene, etc.), polyolefin fibers (polyethylene, polypropylene, etc.), polyurethane fibers (polyurethane, etc.), polyvinyl chloride / polyvinyl alcohol copolymer fibers (polycral, etc.), polyalkylene paraoxybenzoate fibers (benzoate, etc.), and polyfluoroethylene fibers (polytetrafluoroethylene, etc.). Examples of hydrophilic fibers include seed hair fibers (cotton, cotton, kapok, etc.), bast fibers (hemp, flax, ramie, hemp, jute, etc.), leaf vein fibers (Manila hemp, sisal, etc.), palm fibers, rush, straw, animal hair fibers (wool, mohair, cashmere, camel hair, alpaca, vicuna, angora, etc.), silk fibers (domestic silk, wild silk), feathers, and cellulosic fibers (rayon, polynosic, cupra, acetate, etc.).

[0045] From the viewpoint of effectively exhibiting drainage performance with the lubricant of the present invention, the fibers are preferably fibers containing hydrophilic fibers, more preferably fibers containing cotton fibers. From the same viewpoint, the content of hydrophilic fibers, and further cotton fibers in the fibers is preferably 5% by mass or more, more preferably 10% by mass or more, even more preferably 15% by mass or more, still more preferably 20% by mass or more, and even more preferably 100% by mass. In the present invention, the term "textile product" refers to fabrics such as woven fabrics, knitted fabrics, and nonwoven fabrics using the hydrophobic or hydrophilic fibers, as well as products obtained using the same, such as undershirts, T-shirts, dress shirts, blouses, slacks, hats, handkerchiefs, towels, knitwear, socks, underwear, and tights. From the viewpoint of effectively exhibiting drainage performance with the lubricant of the present invention, the textile product is preferably a textile product containing hydrophilic fibers, and more preferably a textile product containing cotton fibers. The preferred embodiments of the content of hydrophilic fibers and further cotton fibers in the textile product are the same as those of the content of hydrophilic fibers and further cotton fibers in the above-mentioned fibers.

[0046] The lubricant of the present invention may be a lubricant for textile products or a lubricant for hard articles. For example, the present invention can provide a lubricant for textile products or a lubricant for hard articles containing component (A) as an active ingredient. Furthermore, for example, the present invention can provide a lubricant for textile products or hard articles containing component (A) as an active ingredient.

[0047] The lubricant of the present invention may be a water-treatment type lubricant. The water-treatment type lubricant may be applied to an object in water. The water-treatment type lubricant of the present invention can be used by contacting the object in the presence of water. For example, it can be used by immersing an object such as a fiber in a treatment solution containing the lubricant of the present invention and water. It can also be used by sprinkling, spraying, or applying the treatment solution containing the lubricant of the present invention and water to an object such as a fiber.

[0048] [Lubricant composition] The lubricant composition of the present invention contains component (A). The matters described for the lubricant of the present invention can be appropriately applied to the lubricant composition of the present invention. Specific examples and preferred embodiments of component (A) are the same as those of the lubricant of the present invention. The lubricant composition of the present invention may be a water-treatment type lubricant composition.

[0049] The lubricant composition of the present invention includes a lubricant composition containing a compound selected from bis-(2-propylheptyl)sulfosuccinic acid, bis-(2-butyloctyl)sulfosuccinic acid, and salts thereof, preferably a compound selected from bis-(2-propylheptyl)sulfosuccinic acid and salts thereof. Furthermore, the lubricant composition of the present invention includes a lubricant composition containing, as an active ingredient of the lubricant, a compound selected from bis-(2-propylheptyl)sulfosuccinic acid, bis-(2-butyloctyl)sulfosuccinic acid, and salts thereof, preferably a compound selected from bis-(2-propylheptyl)sulfosuccinic acid and salts thereof. Of course, the matters described for the lubricant composition of the present invention also apply to these lubricant compositions.

[0050] The lubricant composition of the present invention has a content of component (A) of preferably 1% by mass or more, more preferably 2% by mass or more, and even more preferably 4% by mass or more from the viewpoint of transportability, and from the viewpoint of handleability of the lubricant composition (hereinafter also simply referred to as handleability), it is preferably 90% by mass or less, more preferably 70% by mass or less, and even more preferably 50% by mass or less.

[0051] The lubricant composition of the present invention may further contain (B) a surfactant (excluding component (A)) (hereinafter referred to as component (B)). Component (B) is a preferred component from the viewpoints of miscibility with component (A) and the fact that it is unlikely to interfere with the dehydration-promoting effect of component (A). The component (B) may be one or more surfactants selected from anionic surfactants (excluding the component (A)), nonionic surfactants, cationic surfactants, and amphoteric surfactants.

[0052] Examples of anionic surfactants (excluding component (A)) include alkyl sulfates, polyoxyalkylene alkyl ether sulfates, alkanesulfonates, alkylbenzenesulfonates, higher fatty acids or salts thereof, polyoxyethylene alkyl ether carboxylic acids or salts thereof, N-acylamino acids or salts thereof, alkyl phosphates, and polyoxyethylene alkyl ether phosphates. The alkyl group of the anionic surfactant has, for example, 8 to 20 carbon atoms. The average number of moles of oxyalkylene groups, such as oxyethylene groups, added in the anionic surfactant is, for example, 0 to 4, preferably more than 0 and 4 or less. The salt of the anionic surfactant is, for example, an alkali metal salt such as a sodium salt or a potassium salt.

[0053] Examples of nonionic surfactants include alkyl monoglyceryl ethers, polyoxyalkylene monoalkyl or alkenyl ethers, alkyl (poly)glycosides (glycoside-type nonionic surfactants), sorbitan-based nonionic surfactants, aliphatic alkanolamides, fatty acid monoglycerides, sucrose fatty acid esters, amidations of alkanolamines such as monoethanolamine, diethanolamine, and methylmonoethanolamine with fatty acids such as lauric acid and myristic acid. The alkyl or alkenyl group of the nonionic surfactant has, for example, 6 to 18 carbon atoms. The average number of moles of oxyalkylene groups, such as oxyethylene groups, added in the nonionic surfactant is, for example, 3 to 25.

[0054] Examples of amphoteric surfactants include N-alkanoylaminopropyl-N,N-dimethylamine oxide, N-alkyl-N,N-dimethylamine oxide, N-alkanoylaminopropyl-N,N-dimethyl-N-carboxymethylammonium betaine, N-alkyl-N,N-dimethyl-N-carboxymethylammonium betaine, N-alkyl-N,N-dimethyl-N-sulfopropylammonium sulfobetaine, N-alkyl-N,N-dimethyl-N-(2-hydroxysulfopropyl)ammonium sulfobetaine, N-alkanoylaminopropyl-N,N-dimethyl-N-sulfopropylammonium sulfobetaine, and N-alkanoylaminopropyl-N,N-dimethyl-N-(2-hydroxysulfopropyl)ammonium sulfobetaine. In these surfactants, the alkanoyl group is, for example, lauroyl or myristyl. In addition, in these surfactants, the alkyl group is, for example, a lauryl group or a myristyl group.

[0055] From the viewpoints of miscibility with component (A) and of minimizing the inhibition of the dehydration-promoting effect of component (A), preferred component (B) is one or more surfactants selected from the group consisting of anionic surfactants such as sodium salt of an internal olefin sulfonic acid having 18 carbon atoms and sodium dodecylbenzenesulfonate, nonionic surfactants such as sodium polyoxyethylene-polyoxypropylene lauryl ether sulfate (e.g., a compound having an average number of moles of ethylene oxide added of 1.5, an average number of moles of propylene oxide added of 0.4, and a compound in which a polyoxyethylene group and a polyoxypropylene group are block-bonded to a lauryl group, in that order), polyoxyethylene lauryl ether (e.g., an average number of moles of ethylene oxide added of 8), and polyoxyethylene lauryl ether (e.g., an average number of moles of ethylene oxide added of 21), and amphoteric surfactants such as lauryl betaine, lauryl dimethylaminoacetic acid betaine, and 2-cocoyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine.

[0056] When the lubricant composition of the present invention contains component (B), the mass ratio (B) / (A) of the content of component (A) to the content of component (B) may be, from the viewpoint of lubricity to water, for example, 10 or less, further 3 or less, further 2 or less, further 1.5 or less, further 1 or less, further 0.80 or less, further 0.70 or less, further 0.67 or less, and may be 0.001 or more, further 0.01 or more, further 0.1 or more, or further 0.5 or more.

[0057] From the viewpoint of ease of handling, the lubricant composition of the present invention preferably contains water. It is preferably a liquid composition containing water. Water is usually the remainder of the composition and is used in an amount such that the total of the composition is 100 mass %. From the viewpoint of ease of handling, the water content in the lubricant composition of the present invention is preferably 10% by mass or more, more preferably 30% by mass or more, even more preferably 50% by mass or more, and preferably 99% by mass or less, more preferably 98% by mass or less, even more preferably 96% by mass or less. The water content may be the balance of component (A) and any optional components other than water.

[0058] From the viewpoint of practical use, the lubricant composition of the present invention further contains preferably at least one selected from butyl diglycol (BDG), propylene glycol (PG), phenyl glycol, ethanol, isopropanol, and paratoluenesulfonate, and more preferably at least one selected from BDG and PG.

[0059] In the lubricant composition of the present invention, the proportion of component (A) among the components other than water is, for example, preferably 70% by mass or more, more preferably 80% by mass or more, and even more preferably 90% by mass or more, and 100% by mass or less, from the viewpoint of imparting lubricity to water to an object.

[0060] The lubricant composition of the present invention may be a lubricant composition for textile products or a lubricant composition for hard articles. For example, the present invention can provide a lubricant composition for textile products or a lubricant composition for hard articles that contains component (A) as an active ingredient of the lubricant. Furthermore, for example, the present invention can provide a lubricant composition for textile products or hard articles that contains component (A) as an active ingredient of the lubricant.

[0061] Component (A), a lubricant comprising component (A), and a lubricant composition containing component (A) can be used in a variety of applications by utilizing their ability to form a synovial surface on the surface of an object. In the present invention, the synovial surface may be the surface of a substance containing component (A) and water. In the present invention, the synovial surface may act on water that comes into contact with the synovial surface, separate from the water in the substance that constitutes the synovial surface.

[0062] Examples of applications using component (A), a lubricant consisting of component (A), or a lubricant composition containing component (A) are given below. In the following, the term "component (A)" may mean "component (A), a lubricant consisting of component (A), or a lubricant composition containing component (A)." For example, the present invention provides a dehydration promoter for washing containing component (A). Here, washing is defined in a broad sense to include the washing step, rinsing step, dehydration step, etc. (The same applies hereinafter). Furthermore, for example, the present invention provides a water permeability improver, further a water permeability improver for textile products or hard articles, containing component (A). Furthermore, for example, the present invention provides a water absorbency improver, further a water absorbency improver for textile products or hard articles, containing component (A). Furthermore, for example, the present invention provides a lubricity imparting agent, further a lubricity imparting agent for textile products or hard articles, containing component (A). Further, for example, the present invention provides a synovial surface forming agent, further a synovial surface forming agent for textile products or hard articles, containing component (A). Furthermore, for example, the present invention provides a water film forming agent, further a water film forming agent for textile products or hard articles, containing component (A). Further, for example, the present invention provides a wet lubricant-forming agent, further a wet lubricant-forming agent for textile products or hard articles, containing component (A). Furthermore, for example, the present invention provides a drying accelerator, further a drying accelerator for textile products or hard articles, containing component (A). Furthermore, for example, the present invention provides a friction reducer, further a friction reducer for textile products or hard articles, containing component (A). Furthermore, for example, the present invention provides a water drainage improver containing component (A), and further a water drainage improver for textile products or hard articles. Furthermore, for example, the present invention provides an agent for inhibiting tangling during washing, which contains component (A). Furthermore, for example, the present invention provides a surface modifier, further a modifier for the surface of fibers or the surface of hard articles, containing component (A). Furthermore, for example, the present invention provides a fiber modifier containing component (A). Furthermore, for example, the present invention provides a fiber treatment agent or a hard article treatment agent containing component (A). Furthermore, for example, the present invention provides a hydrophilicity-imparting agent, further a hydrophilicity-imparting agent for textile products or hard articles, containing component (A). Here, imparting hydrophilicity refers to, for example, forming a water-containing gel layer on the target surface (target object) or making the surface non-meniscus-forming, and imparting properties different from general hydrophilicity. These agents may all be of the water treatment type. These agents can be used on hard articles, textile products, etc., with textile products being one of the preferred embodiments. These agents may also contain optional components such as water and the aforementioned component (B).

[0063] [How to process the object] The present invention provides a method for treating an object, which comprises adhering component (A) and water to the object to form a synovial surface for water. The lubricant or lubricant composition of the present invention is preferably used in the treatment method of the present invention. The synovial surface formed by the treatment method of the present invention may be capable of separating water in liquid form from the object. The treatment method of the present invention can be appropriately applied to the matters described for the lubricant or lubricant composition of the present invention. Specific examples and preferred embodiments of component (A) are the same as those for the lubricant of the present invention. The treatment method of the present invention can be carried out, for example, as a treatment method in which component (A) is applied to an object in water.

[0064] In the treatment method of the present invention, from the viewpoint of forming a synovial surface against water, it is preferable to contact the object with component (A), or the lubricant of the present invention, or the lubricant composition of the present invention in the presence of water. From the viewpoint of operability, it is more preferable to contact the object with a treatment liquid containing component (A) and water (hereinafter also referred to as the treatment liquid of the present invention). In the treatment method of the present invention, it is preferable to treat the object with the treatment liquid of the present invention. The treatment liquid of the present invention may be a liquid for treating the object with component (A). Furthermore, the treatment liquid of the present invention may be obtained by mixing the lubricant or lubricant composition of the present invention with water. Furthermore, when the lubricant composition of the present invention contains component (A) at a concentration suitable for treatment, it can be used as the treatment liquid of the present invention as is. Methods for contacting the object with the treatment liquid of the present invention include immersing the object in the treatment liquid of the present invention and sprinkling the treatment liquid of the present invention on the object. The treatment liquid of the present invention can also be contacted with the object by spraying or coating.

[0065] The treatment liquid of the present invention may contain, for example, component (A) in an amount of 0.0001% by mass or more, 0.001% by mass or more, further 0.002% by mass or more, further 0.01% by mass or more, further 0.02% by mass or more, further 0.1% by mass or more, further 0.2% by mass or more, and 20% by mass or less, further 10% by mass or less, further 5% by mass, or further 1% by mass or less.

[0066] When an object is immersed in the treatment liquid of the present invention, the treatment liquid may contain, for example, component (A) in an amount of 0.0001% by mass or more, 0.001% by mass or more, further 0.01% by mass or more, further 0.1% by mass or more, and 20% by mass or less, further 10% by mass or less, further 5% by mass or less, or further 1% by mass or less, depending on the object. Immersion can be carried out using a treatment bath, for example, a treatment bath comprising the treatment liquid of the present invention and a container for storing the treatment liquid of the present invention.

[0067] When the treatment solution of the present invention is sprinkled onto an object, the treatment solution may contain, for example, component (A) in an amount of 0.002% by mass or more, further 0.02% by mass or more, further 0.2% by mass or more, and 5% by mass or less, further 2% by mass or less, or further 1% by mass or less, from the viewpoint of forming a synovial surface against water.

[0068] In the present invention, it is preferable to use component (A) mixed with water having a hardness of 0°DH or more and 30°DH or less. That is, it is preferable to treat objects such as fibers and hard articles with a treatment liquid obtained by mixing component (A) with water having a hardness of 0°DH or more and 30°DH or less. From the viewpoint of lubricity to water, the hardness of the water is preferably 1°DH or more, more preferably 2°DH or more, and even more preferably 3°DH or more. Furthermore, the hardness of the water may be 25°DH or less, or 20°DH or less.

[0069] The treatment liquid of the present invention may have a hardness of 0°DH or more and 30°DH or less. From the viewpoint of lubricity to water, the hardness of the treatment liquid of the present invention is preferably 1°DH or more, more preferably 2°DH or more, and even more preferably 3°DH or more. The hardness of the treatment liquid of the present invention may be 25°DH or less, or 20°DH or less.

[0070] In the treatment method of the present invention, component (B) can be used together with component (A). That is, in addition to component (A) and water, a surfactant (B) (excluding component (A)) can also be applied to the object. Specific examples of component (B) and the preferred value of (B) / (A) are the same as those of the lubricant composition of the present invention. When component (B) is used, the lubricant composition of the present invention containing component (B) can be used. When using a treatment bath such as the one described above, the treatment bath can contain component (B).

[0071] The treatment method of the present invention can be applied to fibers, hard articles, etc. From the viewpoint of promoting dehydration, the treatment method of the present invention is preferably applied to fibers, and more preferably to textile products. As an example, an embodiment of treating fibers according to the present invention (hereinafter also referred to as the fiber treatment method of the present invention) will be described. When treating fibers, it is preferable to immerse the object in the treatment liquid of the present invention, for example, to treat the fibers in a treatment bath containing the treatment liquid of the present invention. Alternatively, the treatment liquid of the present invention may be sprayed onto the fibers.

[0072] In the fiber treatment method of the present invention, component (A) is used in an amount of preferably 0.01% owf or more, more preferably 0.03% owf or more, even more preferably 0.05% owf or more, even more preferably 0.1% owf or more, even more preferably 0.2% owf or more, and even more preferably 0.3% owf or more relative to the fiber from the viewpoint of lubricity to water, and preferably 5% owf or less, more preferably 4% owf or less, even more preferably 3% owf or less, and even more preferably 2% owf or less from the viewpoint of finishing performance such as handle after drying. % owf stands for "% on the weight of fabric" and refers to the percentage of the mass of component (A) relative to the mass of the fiber. The treatment solution of the present invention can be used so that the amount of component (A) relative to the fiber is in the above-mentioned range.

[0073] In the fiber treatment method of the present invention, the liquor ratio (mass (kg) of treatment liquid per 1 kg of fiber) is preferably 2 or more, more preferably 5 or more, and even more preferably 7 or more, from the viewpoint of ensuring uniformity of treatment and lubricity, and may be 100 or less, 70 or less, 50 or less, or 30 or less.

[0074] The fiber treatment method of the present invention can be applied to the fibers described in the lubricant of the present invention. For example, the fibers may be fabric fibers.

[0075] The fiber treatment method of the present invention can be incorporated into a washing process for fibers, such as cloth fibers. Here, the washing process may be a treatment of washing, rinsing, and dehydrating the fibers. In the present invention, the lubricant or lubricant composition of the present invention can be applied to the fibers in any of these washing processes so that the component (A) is present in a predetermined amount.

[0076] From the viewpoint of water drainage, the treatment method of the present invention is preferably applied to hard articles. As an example, an embodiment of the present invention for treating hard articles (hereinafter also referred to as the method of treating hard articles of the present invention) will be described. When treating a hard article, it is preferable to immerse the hard article in the treatment liquid of the present invention, for example, to treat the hard article in a treatment bath containing the treatment liquid of the present invention. Alternatively, the treatment liquid of the present invention may be sprinkled onto the hard article.

[0077] In the method for treating a hard article of the present invention, from the viewpoint of imparting lubricity to the object against water, the content of component (A) in the treatment liquid of the present invention is preferably 1 ppm or more, more preferably 2 ppm or more, even more preferably 5 ppm or more, and even more preferably 10 ppm or more. Furthermore, from the viewpoint of ensuring visibility (hereinafter simply referred to as visibility) without the formation of aggregates on the surface of the hard article after treatment, the content of component (A) in the treatment liquid of the present invention is preferably 5000 ppm or less, more preferably 2000 ppm or less, and even more preferably 1000 ppm or less.

[0078] In the method for treating hard articles of the present invention, from the viewpoint of imparting lubricity to the object against water, the amount of component (A) to be treated per surface area of ​​the object is preferably 2.7 μg / cm 2 More preferably, 5.4 μg / cm 2 More preferably, 13.6 μg / cm 2 More preferably, 27.1 μg / cm 2 From the viewpoint of ensuring visibility, it is preferably 13600 μg / cm 2 or less, more preferably 5420 μg / cm 2 More preferably, 2710 μg / cm 2 The following is the result.

[0079] The treatment method of the present invention can be carried out, for example, as a treatment method for forming a wet lubricant by applying component (A) in water to an object, such as a fiber and / or a hard article. The treatment method of the present invention can also be carried out as a treatment method for promoting dehydration by applying component (A) in water to an object, such as fibers and / or hard articles. The treatment method of the present invention can also be carried out as a treatment method for accelerating drying by applying component (A) in water to an object such as fibers and / or hard articles. The treatment method of the present invention can also be carried out as a treatment method for reducing friction by applying component (A) in water to an object such as fibers and / or hard articles. The treatment method of the present invention can also be carried out as a treatment method for improving water drainage by applying component (A) in water to an object, such as fibers and / or hard articles. The treatment method of the present invention can also be carried out as a treatment method for preventing entanglement during washing, by applying component (A) to an object, such as fibers, in water. In these treatment methods, component (B) can be used together with component (A).

[0080] Furthermore, for example, the present invention provides a method for promoting dehydration during laundry, which comprises applying component (A) to laundry in water and then dehydrating the laundry. In this method, component (A) may be applied to laundry during washing and / or rinsing, for example. Furthermore, for example, the present invention provides a method for improving water permeability, and further a method for improving water permeability of textile products and / or hard articles, in which component (A) is applied to an object, such as a textile product and / or hard article, in water. Furthermore, for example, the present invention provides a method for improving water absorbency, and further a method for improving water absorbency of textile products and / or hard articles, in which component (A) is applied to an object, such as a textile product and / or hard article, in water. Furthermore, for example, the present invention provides a method for imparting lubricity to an object, such as a textile product and / or a hard article, by applying component (A) in water, and further provides a method for imparting lubricity to a textile product and / or a hard article. Furthermore, for example, the present invention provides a method for forming a synovial surface, which comprises applying component (A) in water to an object, such as a textile product and / or a hard article, and further provides a method for forming a synovial surface on a textile product and / or a hard article. Furthermore, for example, the present invention provides a method for forming a water film by applying component (A) in water to an object, such as a textile product and / or a hard article, and further provides a method for forming a water film on a textile product and / or a hard article. Furthermore, for example, the present invention provides a method for forming a wet lubricant by applying component (A) in water to an object, such as a textile product and / or a hard article, and further provides a method for forming a wet lubricant on a textile product and / or a hard article. Furthermore, for example, the present invention provides a method for accelerating drying, and further a method for accelerating drying of textile products and / or hard articles, in which component (A) is applied to an object, such as a textile product and / or hard article, in water. Furthermore, for example, the present invention provides a method for reducing friction, and further a method for reducing friction of textile products and / or hard articles, by applying component (A) to an object, such as a textile product and / or hard article, in water. Furthermore, for example, the present invention provides a method for improving water drainage, and further a method for improving the water drainage of textile products and / or hard articles, by applying component (A) to an object, such as a textile product and / or a hard article, in water. Furthermore, for example, the present invention provides a method for preventing textiles from entangling during washing, which comprises applying component (A) to textiles in water. Also, for example, the present invention provides a surface modification method in which component (A) is applied to an object, such as a textile product and / or a hard article, in water. For example, the present invention also provides a method for modifying fibers, in which component (A) is applied to fibers in water. Also, for example, the present invention provides a method for treating fibers and / or hard articles, in which component (A) is applied to the fibers and / or hard articles in water. Furthermore, for example, the present invention provides a method for imparting hydrophilicity to an object, such as a textile product and / or a hard article, by applying component (A) in water, and further provides a method for imparting hydrophilicity to a textile product and / or a hard article. Furthermore, for example, the present invention provides a method for uniforming the surface condition of an object, such as a textile product and / or a hard article, by applying component (A) to the object in water, and further provides a method for uniforming the surface condition of a textile product and / or a hard article. In these methods, component (B) can be used together with component (A).

[0081] The present invention provides a method for treating an object, which comprises adhering component (A) and water to the object to form a synovial surface on the object against water, and then separating the water that has come into contact with the synovial surface from the object by sliding it along the synovial surface. The present invention also provides a method for treating an object, which comprises adhering component (A) and water to the object to form a synovial surface on the object that is resistant to water, and the synovial surface is such that water that comes into contact with the synovial surface can slide across the synovial surface and be separated from the object. The present invention also provides a method for treating an object, which comprises adhering component (A) and water to the object to form a synovial surface on the object against water, and allowing water that has come into contact with the synovial surface to slide across the synovial surface and separate from the object, thereby reducing the amount of water retained in the object. The present invention also provides a method for treating an object, which comprises adhering component (A) and water to the object to form a synovial surface on the object that is resistant to water, and the synovial surface allows water that has come into contact with the synovial surface to slide along the synovial surface and separate from the object, thereby reducing the amount of water retained on the object. These processes can be carried out, for example, as dewatering processes, water draining processes or water waste processes. In these methods, component (B) can be used together with component (A). In these methods, water can be separated from the object in a liquid state.

[0082] The present invention provides use of component (A) for forming a lubricating surface on an object against water. The present invention also provides use of component (A) for forming a lubricating surface for water on an object, wherein the synovial surface is capable of allowing water that has come into contact with the synovial surface to slide along the synovial surface and be separated from the object. The present invention also provides use of component (A) for treatment in which component (A) and water are attached to an object to form a synovial surface for water on the object, and water that comes into contact with the synovial surface slides across the synovial surface and is separated from the object, thereby reducing the amount of water retained on the object. These uses can be carried out, for example, in dewatering, draining water or waste water. In these applications, component (B) can be used together with component (A). In these applications, water can be separated from the object in a liquid state. [Example]

[0083] <Lubricity evaluation 1> Using the following Lubricants 1 to 3 and Comparative Lubricant 1, textile products were treated in a water bath, and the amount of water after dehydration was measured by the following method and used as an index of the lubricity (synovial properties of water). Lubricant 1: Sodium bis-(2-propylheptyl) sulfosuccinate Lubricant 2: Sodium bis-(2-butyloctyl) sulfosuccinate Lubricant 3: Sodium dialkyl sulfosuccinate obtained by sulfonating maleic acid diester obtained from isodecyl alcohol (Decanol, manufactured by KH Neochem Co., Ltd.) and maleic anhydride. Comparative lubricant 1: Dioctadecyl ammonium chloride

[0084] (1) Pretreatment of evaluation towels The towels used for evaluation were previously subjected to the following treatment to remove adhesive and impurities. Using a fully automatic washing machine (Panasonic, model number: NA-F60PB3), 24 commercially available cotton towels (Yoshikawa Towel Co., Ltd. TW220, white) were washed three times using 52.22 g of a 10% diluted solution of a nonionic surfactant (Kao Corporation, Emulgen 108) as detergent and tap water from Wakayama City (50 L of water, 10 minutes of washing, two rinses, and a 9-minute spin cycle). The same washing cycle was then repeated twice using water only. The towels were then left to dry naturally at room temperature (25°C) for 24 hours.

[0085] (2) Towel disposal method A predetermined amount of ion-exchanged water (bath ratio 25 kg / kg-towel) was placed in a portable washing machine (National, model number: NA-35), and a calcium chloride aqueous solution (equivalent to 4000°DH) was added to achieve the hardness of the treatment solution shown in Table 1. A 5 mass% aqueous dispersion of the lubricant shown in Table 1 was then added with stirring to achieve the treatment amount shown in Table 1. The mixture was stirred for 1 minute to prepare the treatment solution, and then three cotton towels (total weight: approximately 210 g) that had been pretreated in (1) above were placed in the washing machine and treated for 5 minutes with stirring.

[0086] (3) Measurement of water content after dehydration The three cotton towels treated in (2) were dehydrated for 5 minutes in the spin tub of a two-tub washing machine (TOSHIBA, model number: VH-52G(H)), and the moisture content after dehydration was measured. The results are shown in Table 1.

[0087] [Table 1]

[0088] It can be seen that in Examples 1-1 to 1-4, which used the lubricant of the present invention, the amount of water after dehydration can be reduced. In particular, in Examples 1-1 and 1-2, the dehydration promotion rate was 20% or more at all hardness levels, demonstrating excellent lubricity to water and minimal effect of water hardness. The dehydration promotion rate (%) is calculated using the following formula, where W is the amount of water remaining after treatment with a treatment solution of a given hardness and dehydration, and W0 is the amount of water remaining after treatment with a treatment solution of the same hardness and dehydration without using a lubricant. In this example, W0 is selected from a, b, or c in Comparative Example 1-1. Dehydration acceleration rate (%)=100×[W0-W] / W0 From the results in Table 1, it is judged that the lubricant of the present invention is more effective in promoting water separation during dehydration than the lubricant of the comparative example.

[0089] (4) Measurement of water content after dehydration 2 Three cotton towels treated in (2) were dehydrated for two minutes in the spin tub of a twin-tub washing machine (TOSHIBA, model number: VH-52G(H)), the moisture content after dehydration was measured, and the dehydration acceleration rate was calculated in the same manner as above. In this example, W0 in the calculation formula for the dehydration acceleration rate was selected from a, b, or c in Comparative Example 2-1. The results are shown in Table 2.

[0090] [Table 2]

[0091] It can be seen that in Examples 2-1 and 2-2, which used the lubricant of the present invention, the amount of water after dehydration can be reduced. Even with dehydration for 2 minutes, which is shorter than usual, the dehydration promotion rate was 10% or more at all hardness levels, demonstrating excellent lubricity against water and little effect of hardness.

[0092] Lubricant compositions shown in Tables 3a and 3b were prepared using the lubricant 1 and the following components, and textile products were treated with these lubricant compositions. The moisture content after dehydration when the products were treated with these lubricant compositions was measured in the same manner as in Example 1, etc., and used as an index of lubricity. In this example, in the towel treatment of (2) above, lubricant compositions were used so that the total amount of component (A) and component (B) (however, the amount of PG in parentheses in Comparative Examples 3-9 and 3-10) was the treatment amount shown in Tables 3a and 3b. The moisture content was measured after 5 minutes of dehydration using the method of (3) above and after 2 minutes of dehydration using the method of (4) above. The dehydration improvement rate (%) was calculated using the following formula. W is the moisture content after treatment with a treatment solution of a specified hardness and dehydration. W B is the water content after treatment with a treatment solution of the same hardness and dehydration of a reference composition containing component (B) contained in the composition for which W was evaluated. Note that the dehydration improvement rate was not calculated for compositions not containing component (B). Dehydration improvement rate (%) = 100 × [W B -W / W B

[0093] <(B) component> B-1: Sodium salt of internal olefin sulfonic acid with 18 carbon atoms B-2: Sodium dodecylbenzenesulfonate B-3: Polyoxyethylene-polyoxypropylene lauryl ether sulfate sodium (a compound in which the average number of moles of ethylene oxide added is 1.5, the average number of moles of propylene oxide added is 0.4, and lauryl groups are block-bonded to polyoxyethylene groups and polyoxypropylene groups in this order) B-4: Sodium lauryl sulfate B-5: Sodium myristyl sulfate B-6: Sodium palmityl sulfate B-7: Polyoxyethylene lauryl ether (average number of moles of ethylene oxide added: 6) B-8: Polyoxyethylene lauryl ether (average number of ethylene oxide moles added: 21) B-9: Polyoxyethylene lauryl ether (average number of moles of ethylene oxide added: 4) B-10: Lauryl betaine, lauryl dimethylaminoacetic acid betaine B-11: 2-Cocoyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine

[0094] <Other ingredients> BDG: Butyl diglycol PG: Propylene glycol

[0095] [Table 3a]

[0096] [Table 3b]

[0097] It can be seen that the moisture content after dehydration can be reduced in Examples 3-1 to 3-17, which used the lubricant of the present invention. The dehydration rate is improved for all (B) components, and it can be seen that the influence of the mass ratio (B) / (A) is particularly small in Examples 3-2 and 3-9.

[0098] <Lubricity evaluation 2> A treatment solution was prepared by the following method, and each substrate was treated with the prepared treatment solution. The dynamic contact angle of water on the treated substrate was measured and used as an index of lubricity (the ability of water to form a synovial surface). The lubricant and component (B) used in this evaluation were the same as those used in Lubricity Evaluation 1. Substrates 1 to 4 were as follows, measuring 1.0 mm x 25 mm x 70 mm, and substrate 5 was measured 2.0 mm x 10 mm x 70 mm. Substrate 1: Polypropylene substrate (PP-N-AN, manufactured by Standard Test Piece Co., Ltd.) Substrate 2: Polyethylene terephthalate substrate (Sanroid Pet Piece, manufactured by Standard Test Piece Co., Ltd.) Substrate 3: Glass substrate (Matsunami Glass Industry Co., Ltd. S2112) Substrate 4: SUS substrate (SUS430 manufactured by Standard Test Piece Co., Ltd.) Substrate 5: Chloroprene rubber substrate (Nippon Test Panel Co., Ltd. CR)

[0099] (1) Preparation of treatment solution The lubricants in Tables 4 to 9 and, if necessary, component (B) were mixed with water of a predetermined hardness to give the treatment concentrations shown in each table, to prepare treatment solutions of the hardness shown in each table.

[0100] (2) Cleaning the substrate Each substrate listed in Tables 4 to 8 was immersed in 300 mL of cleaning solution (Contaminon L manufactured by Fujifilm Wako Pure Chemical Industries, Ltd., at a concentration of 2%) and subjected to ultrasonic treatment for 15 minutes. After rinsing with 25 mL of ion-exchanged water, the substrate was immersed in ethanol and subjected to ultrasonic treatment for 30 minutes. After rinsing with 25 mL of ion-exchanged water, the substrate was left to dry overnight (12 hours) in an environment with a humidity of 40 to 50% RH, and these were used as untreated substrates. The ultrasonic treatment was performed using a SHARP UT-604.

[0101] (3) Substrate processing 100 mL of the treatment solution prepared in (1) was placed in a PP wide-mouth bottle (product number 100 mL, manufactured by AS ONE Corporation), and the untreated substrate washed in (2) was immersed and treated at 25°C for 15 minutes while shaking at 200 rpm using a TAITEC Co., Ltd., model number BR-21FH. The substrate was then immersed in 100 mL of water with the same hardness as the treatment solution for 30 seconds, and then left to dry overnight (12 hours) at a temperature of 23°C and a humidity of 40-50%.

[0102] (4) Dynamic contact angle measurement method Using a fully automated contact angle meter (KYOWA, DropMaster), 4 μL of ion-exchanged water was dropped onto the substrate. After 10 seconds, tilting was initiated, increasing the tilt angle at a rate of 2° / s. The tilt angle and contact angle were measured using the sliding method, and the sliding angle and contact angle hysteresis were calculated. The results are shown in the tables. The tilt angle at which the droplet began to slide is the sliding angle [°]. The difference between the advancing and receding contact angles at the start of sliding is the contact angle hysteresis [°]. The sliding angle listed in each table is the arithmetic mean of three sliding angle measurements taken at three different locations on each substrate. The contact angle hysteresis listed in each table is the arithmetic mean of three contact angle hysteresis measurements corresponding to the sliding angle measurements at the three locations.

[0103] [Table 4]

[0104] It can be seen that in Examples 4-1 to 4-10, which were treated with the lubricant of the present invention, lubricity against water can be imparted to the target surface. It can be seen that the Examples have excellent lubricity against water for all target surfaces, and are little affected by the target surface. In the table, ">80" means "greater than 80" (the same applies hereinafter).

[0105] [Table 5]

[0106] It can be seen that in Examples 5-1 to 5-10, which were treated with the lubricant of the present invention, the lubrication properties of water can be imparted to the target surface. The Examples are excellent in lubricity to water at all hardness levels, and it can be seen that the influence of hardness is small.

[0107] [Table 6]

[0108] It can be seen that in Examples 6-1 to 6-7, which were treated with the lubricant of the present invention, lubricity to water can be imparted to the target surface. Examples 6-2 to 6-7 show that the combined use of component (A) and component (B) does not impair the lubricity to water of component (A).

[0109] [Table 7]

[0110] It can be seen that in Examples 7-1 to 7-7, which were treated with the lubricant of the present invention, lubricity to water can be imparted to the target surface. It can also be seen from Examples 7-2 to 7-7 that the combined use of component (A) and component (B) does not impair the lubricity to water of component (A).

[0111] [Table 8]

[0112] It can be seen that in Examples 8-1 to 8-3, which were treated with the lubricant of the present invention, lubricity to water can be imparted to the target surface. All target surfaces exhibited excellent lubricity to water, and it can be seen that the material of the target surface had little effect.

[0113] [Table 9]

[0114] *1: The wetness spreads so much that the static contact angle cannot be measured. *2: The wetness spreads so much that the falling angle cannot be measured. *3: The fall angle cannot be measured, and as a result, hysteresis cannot be measured either.

[0115] It can be seen that in Examples 9-1 to 9-9, which were treated with the lubricant of the present invention, the target surfaces were made highly hydrophilic and had excellent lubricity to water.

[0116] <Evaluation of water drainage> Substrate 2 and substrate 3 used in lubricity evaluation 2 were washed and treated in the same manner as (2) and (3) of lubricity evaluation 2. Ion-exchanged water was sprayed onto each treated substrate with a sprayer, and the amount of water attached to the substrate immediately after spraying (initial amount) (g) and the amount of water attached to the substrate after 10 seconds (residual amount) (g) were measured, and the drainage property was evaluated based on the discharge rate calculated from the following formula. Discharge rate (%) = 100 x [1 - (residual amount) / (initial amount)] The ion-exchanged water was sprayed onto the substrate by pushing three times using a sprayer (volume 30 mL, No. 6) manufactured by Maruemu Co., Ltd. The residual amount and initial adhesion amount were determined as follows. (Residual amount) = (total mass of substrate after 10 seconds) - (mass of substrate before spraying) (Initial amount of adhesion) = (Residual amount) + (Amount of water dropped in 10 seconds)

[0117] [Table 10]

[0118] It can be seen that in Examples 10-1 and 10-2, which were treated with the lubricant of the present invention, the water drainage of the target surface can be improved. The discharge rate was 80% or more for all target surfaces, and it can be seen that the material of the target surface has little effect.

[0119] <Evaluation of spotting> The towels were pretreated, treated with a lubricant, and dehydrated in the same manner as in Example 1-1, except that 24 towels were treated simultaneously under the conditions shown in Table 11. After dehydration, the towels were allowed to air dry. After drying, five towels were randomly selected, and five 10 cm x 10 cm towel pieces were cut from each. The amount of lubricant adsorbed onto the cut pieces was determined using the following method. The standard deviation of the amount of adsorption for a total of 25 towel pieces was calculated. The standard deviation for the 25 towel pieces is shown in Table 11.

[0120] (Measurement of adsorption amount) 80 mL of methanol was placed in a Maruemu screw tube (100 mL capacity, No. 8), the towel fragments were immersed in, and ultrasonic treatment was performed for 30 minutes using a SHARP UT-604. The resulting extract was appropriately diluted and filtered using an ADVANTEC DISMIC 13HP disposable membrane filter unit (0.2 μm pore size), and then subjected to LC / MS. The LC / MS used was a Shimadzu LCMS-2020. The LC / MS conditions were as follows: (chromatographic separation) Column: Imtakt UK-C18 HT, inner diameter 2 mm x length 50 mm, particle size 3 μm Column temperature: 40℃ Eluent A: Water containing 10 mM ammonium acetate Eluent B: Methanol containing 10 mM ammonium acetate Flow rate: 0.3mL / min Gradient: Eluent B 0% (0-5 min) → 100% (5-15 min) → 100% (15-25 min) → 0% (25.01 min-30 min) Injection volume: 1μL (Mass spectrometry) Ionization method: Electrospray ionization (ESI) Analysis mode: Lubricant 1 Negative, SIM (m / z=477.1) Comparative lubricant 1 Positive, SIM (m / z=550.6)

[0121] [Table 11]

[0122] In Examples 11-1 and 11-2, which were treated with the lubricant of the present invention, the maximum value of the standard deviation within the towel was smaller than in Comparative Examples 11-1 and 11-2, and it was found that the towels were less prone to mottle.

Claims

1. (A) A lubricant containing a compound represented by the following formula 1 (hereinafter referred to as component (A)): 【Chemistry 1】 [In the formula, R １ and R ２ are branched hydrocarbon groups having 10 to 12 carbon atoms and a side chain having 3 or more carbon atoms; １ O and A ２ Each O is an alkyleneoxy group having 2 to 4 carbon atoms, x1 and x2 are the average number of moles added and are each a number of 0 to 10, and M is a cation.

2. The lubricant according to claim 1 , wherein in formula 1, x1 and x2 are each 0.

3. In the formula 1, R １ and R ２ and each represent a branched chain alkyl group having 10 to 12 carbon atoms.

4. The lubricant according to any one of claims 1 to 3, which is of a water-processable type.

5. A lubricant according to any one of claims 1 to 4 which forms a synovial surface for water.

6. (A) A lubricant composition containing a compound represented by the following formula 1 (hereinafter referred to as component (A)): 【Chemistry 2】 [In the formula, R １ and R ２ are branched hydrocarbon groups having 10 to 12 carbon atoms and a side chain having 3 or more carbon atoms; １ O and A ２ Each O is an alkyleneoxy group having 2 to 4 carbon atoms, x1 and x2 are the average number of moles added and are each a number of 0 to 10, and M is a cation.

7. The lubricant composition according to claim 6, comprising 1% by mass or more and 90% by mass or less of component (A).

8. 8. The lubricant composition according to claim 6, further comprising (B) a surfactant (excluding component (A)) (hereinafter referred to as component (B)).

9. 9. The lubricant composition according to claim 8, wherein component (B) is one or more surfactants selected from the group consisting of anionic surfactants (excluding component (A)), nonionic surfactants, cationic surfactants, and amphoteric surfactants.

10. 10. The lubricant composition according to claim 8, wherein the mass ratio (B) / (A) of the content of the component (A) to the content of the component (B) is 10 or less.

11. A lubricant composition according to any one of claims 6 to 10, which forms a synovial surface for water.

12. The lubricant composition according to any one of claims 6 to 11, which is of the water treatment type.

13. (A) A method for treating an object, comprising attaching a compound represented by the following formula 1 (hereinafter referred to as component (A)) and water to the object to form a synovial surface on the object against water. 【Transformation 3】 [In the formula, R １ and R ２ are branched hydrocarbon groups having 10 to 12 carbon atoms and a side chain having 3 or more carbon atoms; １ O and A ２ Each O is an alkyleneoxy group having 2 to 4 carbon atoms, x1 and x2 are the average number of moles added and are each a number of 0 to 10, and M is a cation.

14. The method for treating an object according to claim 13, wherein the object is treated with a treatment liquid containing the component (A) and water.

15. The method for treating an object according to claim 13 or 14, wherein the object is at least one selected from the group consisting of fibers and hard articles.

16. The method for treating an object according to any one of claims 13 to 15, wherein, in addition to the component (A) and water, a surfactant (B) (excluding the component (A)) is further adhered to the object.

17. The method for treating an object according to claim 16, wherein the lubricant composition according to any one of claims 8 to 10 is used.

18. A method for treating an object according to any one of claims 13 to 17, using the lubricant according to any one of claims 1 to 5 or the lubricant composition according to any one of claims 6 to 12.

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