JP2021014484A - Method for improving texture of hard surface - Google Patents

Abstract

To provide a method for improving the texture of a hard surface such as a floor and a texture improving agent.SOLUTION: A method for improving the texture of a hard surface includes applying a treatment liquid to a hard surface and drying it, wherein, the treatment liquid contains (a) at least one selected from solid fine particles with an average particle size of 0.7 μm or more and 30 μm or less and a compound capable of forming solid fine particles with an average particle size of 0.7 μm or more and 30 μm or less after drying, of 0.0005 mass% or more and 0.5 mass% or less, and water, and has a 25°C kinetic surface tension of 15 mN/m or more and 60 mN/m or less.SELECTED DRAWING: None

Description

The present invention relates to a method for improving the feel of a hard surface and an agent for improving the feel of a hard surface, and more particularly to a method of improving the feel of a floor surface and an agent for improving the feel of a floor.

Many of the surfaces of the living environment are made of hard materials, and care is taken in consideration of the materials and uses. For example, in general, floor cleaning is performed by wiping with water in addition to removing the vacuum cleaner or wearing shoes. In traditional Japanese houses, rags have been used. In recent years, the amount of water used to wipe the floor is decreasing in ordinary households, but in addition to schools and other public facilities, water is still used at the entrances and lobbies of hotels and theaters to maintain beautifully decorated floors. Wiping is done. In general households such as Southeast Asia, cleaning by wiping with water is routinely performed. As an auxiliary agent for wiping floor water, those for the purpose of detergency and sterilization are known.

Patent Document 1 discloses a hard surface cleaning agent composition containing an alkaline builder and a modified silicone.
Further, Patent Document 2 discloses a composition containing a nonionic surfactant and a silicone surfactant, and a method for removing stains using the composition.
Further, Patent Document 3 states that hydrophobic particles having a surface energy of 60 mN / m or less are dispersed in a dispersion medium having a surface tension of 25 to 60 mN / m in the form of secondary particles (25 ° C.). A liquid cleaning agent composition for a hard surface having a viscosity of 1 to 1000 mPa · s is disclosed.
Further, Patent Document 4 describes a polymer particulate substance containing water, a unit derived from a conjugated diene monomer, a unit derived from an acid monomer, and a unit derived from a hard non-acid monomer, an external cross-linking agent, and optionally a leveling agent and a surfactant. Aqueous floor care compositions comprising one or more of activators, polyurethanes, alkali-soluble resins, fusion aids, plasticizers and waxes are disclosed.

Japanese Unexamined Patent Publication No. 2013-12302 Japanese Unexamined Patent Publication No. 2003-503581 JP-A-11-209793 JP-A-2009-543935

In countries and regions where the living environment is often barefoot, there is constant contact with the skin and hard surfaces such as the floor. Therefore, the feel of the hard surface that comes into contact with the skin is important, but the original floor material is sticky and does not have an excellent feel. In addition, not only light stains such as sweat stains and dirt on the floor, but also oil stains splashed during cooking and oil derived from foot sweat are altered by heat, light, oxygen in the air, etc. It exists and is sticky when it adheres to the floor surface, and such stickiness cannot be easily removed only by wiping with conventional washing water. Therefore, there is a demand for a technique for removing such stickiness and improving the feel.

The present invention provides a method and a feel improver for improving the feel of a hard surface such as a floor.

The present invention comprises 0.0005 mass of one or more selected from (a) a compound capable of forming solid fine particles having an average particle size of 0.7 μm or more and 30 μm or less and solid fine particles having an average particle size of 0.7 μm or more and 30 μm or less after drying. A method for improving the feel of a hard surface, which comprises applying a treatment liquid containing% or more and 0.5% by mass or less and water and having a dynamic surface tension of 15 mN / m or more and 60 mN / m or less at 25 ° C. to the hard surface and drying it. Regarding.

Further, the present invention is one or more selected from (a) a compound capable of forming solid fine particles having an average particle size of 0.7 μm or more and 30 μm or less and solid fine particles having an average particle size of 0.7 μm or more and 30 μm or less after drying. It contains (a) component] and (b) surfactant [hereinafter referred to as (b) component], and is the mass ratio of the content of (a) component to the content of (b) component (a) / ( b) relates to a feel improver for hard surfaces having a value of 0.001 or more and 5 or less.

According to the present invention, there is provided a method and a feel improving agent for improving the feel of a hard surface such as a floor.

<How to improve the feel of a hard surface>
In the present invention, the treatment liquid containing the component (a) of 0.0005% by mass or more and 0.5% by mass or less and water and having a dynamic surface tension of 15 mN / m or more and 60 mN / m or less at 25 ° C. [hereinafter, Sometimes referred to as the treatment liquid of the present invention] is applied to a hard surface and dried.
Hereinafter, the component (a) may refer to both solid fine particles having an average particle size of 0.7 μm or more and 30 μm or less and solid fine particles having an average particle size of 0.7 μm or more and 30 μm or less generated after drying.

Examples of the component (a) include solid fine particles having an average particle size of 0.7 μm or more and 30 μm or less. As the component (a), water-insoluble solid fine particles are suitable. The component (a) is preferably solid fine particles having a solubility of 0.005 g or less with respect to 100 g of water at pH 7 and 20 ° C.

Examples of the component (a) include inorganic solid fine particles, organic solid fine particles, and solid fine particles containing an organic component and an inorganic component.

Examples of the inorganic solid fine particles include (a11) silica, titanium oxide, alumina, zirconium oxide, zinc oxide, ferrite, cobalt-modified iron oxide, magnetite, α-Fe ₂ O ₃ , γ-Fe ₂ O ₃ , indium oxide-. Metal oxides such as tin oxide, magnesium oxide and calcium oxide, (a12) metal hydroxides such as sodium hydroxide, magnesium hydroxide and aluminum hydroxide, (a13) sodium carbonate, sodium hydrogen carbonate, calcium carbonate and sodium sulfate. , Metal salts such as calcium sulfate (gypsum), barium sulfate, sodium chloride, potassium titanate, (a14) Non-oxide ceramics such as boron nitride, aluminum nitride, titanium nitride, silicon nitride, silicon carbide, (a15). Metal powders such as α-iron powder, silver powder, copper powder and silicon powder, carbon materials such as (a16) carbon black, graphite and carbon whisker, and natural minerals such as talc, mica, smectite, montmorillonite and sericite. (A18) Examples thereof include inorganic pigments such as red iron oxide, lead white, yellow lead, dark blue, titanium white, and titanium yellow. As the inorganic solid fine particles, one or more kinds of inorganic solid fine particles selected from the natural minerals (a17) are preferable.

Examples of the organic solid fine particles include synthetic resins such as (a21) hydrocarbon resin, acrylic resin, vinyl resin, phenol resin, epoxy resin, polyester resin, polyamide resin, polystyrene resin, urethane resin, and silicone resin (these are crosslinked and non-crosslinked). (A22) Natural waxes such as carnauba wax and candelilla wax, polyethylene waxes, ester waxes, microcrystallin waxes, paraffin waxes and other waxes, (a23) phthalocyanine blue, metal ion-containing organic solids such as dyed lakes, etc. And so on. As the organic solid fine particles, one or more kinds of organic solid fine particles selected from the synthetic resin of (a21) are preferable.

Two or more kinds of solid fine particles of the component (a) may be mixed and used.
As the component (a), one or more solid fine particles selected from the natural mineral (a17) and the synthetic resin of (a21) are preferable.
As the component (a), one or more solid fine particles selected from talc, mica, smectite, montmorillonite, acrylic resin, silicone resin, nylon resin, and urethane resin are more preferable.
(A) Ingredients include talc, mica, smectite, montmorillonite, silicone resin powder, silicone rubber powder, nylon powder, silk powder, urethane powder, Teflon (registered trademark) powder, polymethyl methacrylate powder, cellulose powder, And one or more solid fine particles selected from polyethylene powders are more preferred.

(A) There is no particular limitation on the shape of the component (spherical, rod-shaped, needle-shaped, plate-shaped, indefinite-shaped, flaky, spindle-shaped, etc.).

The average particle size of the component (a) is 0.7 μm or more and 30 μm or less. The average particle size of the component (a) is measured by Keyence Corporation, a measuring scale of a microscope VHX-5000, and automatic area measurement. When the treatment liquid of the present invention is treated on an object with a mop or the like to precipitate solid particles on the object, the appearance is often impaired, such as wiping streaks remaining or whitening. From the viewpoint of preventing such appearance from being impaired and improving the feel, the average particle size of the component (a) is preferably 2 μm or more, and preferably 12 μm or less.

The treatment liquid of the present invention has a dynamic surface tension at 25 ° C. of 15 mN / m or more and 60 mN / m or less. This dynamic surface tension was measured by the bubble pressure method (BP100-MK1, manufactured by KRUSS, 25 ° C., capillary diameter 0.246 mm, measurement time: 10 ms to 10000 ms). Further, it is preferable that the treatment liquid of the present invention also has a dynamic surface tension in this range at the temperature at the time of treatment.

The treatment liquid of the present invention has a dynamic surface tension of 15 mN / m or more, preferably 20 mN / m or more, and preferably 55 mN / m at 25 ° C. from the viewpoint of preventing spoiling the appearance and improving the feel. Below, it is more preferably 50 mN / m or less, still more preferably 45 mN / m or less.

For the purpose of obtaining such dynamic surface tension, the treatment liquid of the present invention preferably contains a surfactant as the component (b).
Examples of the component (b) include one or more surfactants selected from nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants.

The nonionic surfactant is not particularly limited, but is not particularly limited, but is polyoxyethylene (additional moles of ethylene oxide of 6 or more and 30 or less), alkyl (carbons of 8 or more and 18 or less) ether, and polyoxyethylene (number of moles of ethylene oxide added). 1 mol or more and 6 mol or less) Solbitan fatty acid (8 to 18 carbon atoms) ester, alkyl (8 to 18 carbon atoms) polyglycoside (sugar condensation degree 1.0 or more and 1.1 or less), sucrose fatty acid (carbon) Examples thereof include amine oxides such as esters, alkyl (8 or more and 18 or less carbon atoms) polyglycerin ethers, and alkyl (8 or more and 18 or less carbon atoms) dimethylamine oxides. Of these, alkyl (8 or more and 18 or less carbon atoms) polyglycosides and alkyl (8 or more and 18 or less carbon atoms) amine oxides are preferable. Examples of the nonionic surfactant include silicone-based surfactants and further, polyether-modified silicones.

In the present invention, it is very important to adjust the dynamic surface tension of the treatment liquid within a predetermined range. The dynamic surface tension can be adjusted by using, for example, the surfactant of the component (b), but from the viewpoint that the dynamic surface tension of the treatment liquid can be easily adjusted within a predetermined range even at a low concentration. It is preferable to use a silicone-based surfactant as the component (b). The treatment liquid of the present invention preferably contains a silicone-based surfactant and a polyether-modified silicone as the component (b). From the viewpoint of preventing spoiling the appearance and improving the feel, the component (b) is a polyether-modified silicone, and the kinematic viscosity at 25 ° C. (mm ² / s) is preferably 1 or more, more preferably 1. More preferably, the polyether-modified silicone is 5 or more, more preferably 10 or more, and preferably 1500 or less, more preferably 1000 or less, still more preferably 500 or less, still more preferably 100 or less. This kinematic viscosity was measured at 25 ° C. by an Ubbelohde viscometer (manufactured by Shibata Kagaku Kikai Kogyo Co., Ltd.).

As the component (b), the polyether-modified silicone of the following general formula (b1) is more preferable.

[In the formula, R ¹ may be the same or different, and each indicates an alkyl group having 1 to 4 carbon atoms. p indicates a number of 0 or more and 1000 or less, and q indicates a number of 1 or more and 1000 or less. X ¹ and X ² may be the same or different, and represent a hydroxy group, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group, respectively. R ² represents a hydrogen atom, an alkyl group having 1 or more and 4 or less carbon atoms, or an acyl group having 2 or more and 4 or less carbon atoms. a is a number of 1 or more and 4 or less, b is a number of 1 or more and 100 or less, and c is a number of 0 or more and 50 or less. / Indicates that each structural unit with p and q and the structural unit with b and c may be random or block. ]

The HLB value of the polyether-modified silicone is preferably 4 or more, more preferably 6 or more, still more preferably 8 or more, still more preferably 10.5 or more, from the viewpoint of preventing spoiling the appearance and improving the feel. Then, it is preferably 20 or less, more preferably 18 or less, still more preferably 16 or less, still more preferably 15 or less, still more preferably 14.5 or less. The HLB for the polyether-modified silicone represented by the general formula (b1) is a value calculated by the following formula (Introduction to New Surfactants, p. 129, by Takehiko Fujimoto, published by Sanyo Chemical Industries, Ltd.) , October 1996).
HLB = E / 5
(E indicates the ratio (mass%) of the mass of the oxyethylene group to the mass of the polyether-modified silicone having a polyoxyethylene group.) The polyether-modified silicone is a compound represented by the general formula (b1). In some cases, R ¹ , p, q, X ¹ , X ² , a, b, c in the formula are selected such that the HLB is the preferred HLB described above.

The anionic surfactant is not particularly limited, and examples thereof include an anionic surfactant having a polyoxyalkylene group. For example, polyoxyalkylene alkyl ether sulfate, polyoxyalkylene alkenyl ether sulfate, polyoxyalkylene alkylaryl ether sulfate, polyoxyalkylene alkenyl ether sulfate, polyoxyalkylene monoalkyl ether phosphate, polyoxyalkylene dialkyl ether. Phosphate, polyoxyalkylene monoalkenyl ether phosphate, polyoxyalkylene dialkenyl ether phosphate, polyoxyalkylene monophenyl ether phosphate, polyoxyalkylene diphenyl ether phosphate, polyoxyalkylene alkyl ether carboxylate , Polyoxyalkylene alkenyl ether carboxylate, polyoxyalkylene alkyl ether acetate, polyoxyalkylene alkenyl ether acetate and the like. The number of carbon atoms of these alkyl groups or alkenyl groups is preferably 8 or more and 18 or less. Examples of the salt include alkali metal salts, ammonium salts and alkanolamine salts.

Examples of the cationic surfactant include compounds of the following general formulas (b2) to (b4) from the viewpoint of preventing spoiling the appearance and improving the feel.

[In the formula, R ^10a and R ^11a are alkyl or alkenyl groups having 5 or more carbon atoms, preferably 6 or more carbon atoms, and 16 or less, preferably 14 or less carbon atoms, preferably alkyl groups, and R ^10c and R ^10d are carbon atoms. It is an alkyl group or a hydroxyalkyl group having a number of 1 or more and 3 or less. T is -COO-, OCO-, -CONH-, -NHCO-, or

Is. g is a number of 0 or 1. R ^10b is an alkylene group having 1 or more carbon atoms and 6 or less carbon atoms, or − ( ^{OR 10f} ) _e −. Here, R ^10f is an ethylene group or a propylene group, preferably an ethylene group, and e is a number of 1 or more and 10 or less, preferably 1 or more and 5 or less. R ^10e is an alkylene group having 1 or more and 5 or less carbon atoms, preferably 2 or 3 carbon atoms. Further, in R ^12a , R ^12b , R ^12c , and R ^12d , two or more (preferably two) of these are alkyl groups having 8 or more and 12 or less carbon atoms, and the rest are alkyl groups having 1 or more and 3 or less carbon atoms. Alternatively, it is a hydroxyalkyl group. Further, Z ⁻ is an anionic group, preferably a halogen ion, or an alkyl sulfate ion having 1 or more and 3 or less carbon atoms. ]

As an amphoteric surfactant, alkyl (8 or more and 18 or less carbon atoms) -N, N-dimethylacetate betaine, fatty acid (8 or more and 18 or less carbon atoms) amidopropyl-N, N-dimethylacetate betaine, alkyl (8 or more carbon atoms) 18 or less) -N, N-dimethylethanesulfobetaine, fatty acid (8 to 18 carbon atoms) amidopropyl-N, N-dimethyl-2-hydroxypropylsulfobetaine, alkyl (8 to 18 carbon atoms) carboxymethylhydroxy Examples thereof include betaines such as ethyl imidazolium betaine. Of these, fatty acids (8 to 18 carbon atoms) amidopropyl-N, N-dimethylbetaacetate betaine, fatty acids (8 to 18 carbon atoms) amidopropyl-N, N-dimethyl-2-hydroxypropyl sulfo Betain is mentioned.

The proportion of the silicone-based surfactant, the polyether-modified silicone, and the polyether-modified silicone represented by the general formula (b1) in the component (b) is preferably 50% by mass or more from the viewpoint of improving the feel. It is more preferably 80% by mass or more, further preferably 90% by mass or more, and preferably 100% by mass or less, and may be 100% by mass.

The details of the mechanism of action of the present invention are unknown, but it is presumed as follows.
In order to give a suitable feel to the hard surface, it is considered desirable to uniformly leave solid fine particles having a specific particle size. However, when an aqueous solution containing solid fine particles is treated on a hydrophobic hard surface such as porcelain tile or ceramic tile by a wet wipe such as a rag, mop, or water-containing sheet wipe, water droplets are generated. The generation of water droplets causes the solid fine particles contained in the aqueous solution to aggregate, and after drying, the solid fine particles locally remain in the water droplet traces, resulting in uneven feel and significantly deteriorating appearance. In the present invention, the treatment is carried out by using a treatment liquid containing solid fine particles [(a) component] having a specific particle size and preferably a surfactant [(b) component] and having a dynamic surface tension within a predetermined range. In a very short time when the liquid is spread on the hard surface by the support, the surfactant of the component (b) that lowers the surface tension quickly acts on the hard surface to prevent the generation of water droplets after application and after drying. , (A) The solid fine particles of the component (a) are uniformly retained, so that a suitable feel is imparted without impairing the appearance.

The treatment liquid of the present invention contains the component (a) in an amount of 0.0005% by mass or more, preferably 0.001% by mass or more, more preferably 0.005% by mass or more, still more preferably 0.01% by mass or more, and It is contained in an amount of 0.5% by mass or less, preferably 0.2% by mass or less, and more preferably 0.1% by mass or less.

As described above, the treatment liquid of the present invention preferably contains the component (b), but the content thereof is determined in consideration of the balance between the application of dynamic surface tension and the feel of the hard surface after treatment. Is preferable. For example, the treatment liquid of the present invention contains the component (b) in an amount of preferably 0.001% by mass or more, more preferably 0.005% by mass or more, still more preferably 0.01, from the viewpoint of obtaining a predetermined dynamic surface tension. From the viewpoint of mass% or more and the feel of the hard surface after treatment, the content is preferably less than 1% by mass, more preferably 0.7% by mass or less, still more preferably 0.5% by mass or less.

The treatment liquid of the present invention has (a) / (b), which is a mass ratio of the content of the component (a) and the content of the component (b), preferably 0.001 from the viewpoint of finishability and feel. Above, more preferably 0.005 or more, still more preferably 0.01 or more, even more preferably 0.05 or more, and preferably 5 or less, more preferably 2.5 or less, still more preferably 2.0 or less. Even more preferably, it is 1.7 or less.

The treatment liquid of the present invention contains water. Water is used in an amount that is the balance of the treatment solution.

The treatment liquid of the present invention may contain a solvent, a viscosity modifier, a metal sequestering agent, a preservative, a pH adjuster, a pigment, and a fragrance as optional components other than the component (a) and the component (b).

Solvents include ethanol, isopropyl alcohol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, glycerin, isoprene glycol, propylene glycol monomethyl ether, propylene glycol monoethyl ether, 3-methyl-3-methoxybutanol, phenoxyethanol, phenyl glycol, Examples thereof include a water-soluble organic solvent selected from phenoxyisopropanol, butyl diglycol (diethylene glycol monobutyl ether), dibutylene diglycol, and benzyl alcohol.

As the fragrance, a single fragrance component may be used, or a fragrance composition containing a plurality of fragrance components in a specific ratio may be used. As fragrance ingredients, "Chemistry of fragrances" (written by Ryoichi Akahoshi, edited by The Chemical Daily, published on September 16, 1983) and "Synthetic fragrance chemistry and product knowledge" (written by Motokazu Indo, The Chemical Daily) , 1996 (published March 6, 1996) and "Basic knowledge of fragrances and fragrances" (Motoki Nakajima, Sangyo Tosho Co., Ltd., published June 21, 1995) can be used. Specifically, one or more selected from hydrocarbon fragrances, alcohol fragrances, ether fragrances, aldehyde fragrances, ketone fragrances, ester fragrances, lactone fragrances, cyclic ketone fragrances and nitrogen-containing fragrances. Preferably, one or more kinds selected from hydrocarbon fragrances, alcohol fragrances and aldehyde fragrances can be mentioned.

The treatment liquid of the present invention has a pH at 25 ° C. of preferably 5 or more, more preferably 6 or more, and preferably 10 or less, more preferably 9 or less. Further, the treatment liquid of the present invention preferably has a pH in this range at the temperature at which it is treated. The pH is preferably measured using a pH meter equipped with a temperature compensating electrode.

The treatment liquid of the present invention has a viscosity at 25 ° C. of preferably 2 mPa · s or more, more preferably 10 mPa · s or more, and preferably 300 mPa · s or less, more preferably 170 mPa · s or less. This viscosity was measured by an Ubbelohde viscometer (manufactured by Shibata Kagaku Kikai Kogyo Co., Ltd.). Further, the treatment liquid of the present invention preferably has a viscosity at a temperature during treatment within this range.

The temperature of the treatment liquid of the present invention is preferably 20 ° C. or higher, more preferably 25 ° C. or higher, and preferably 40 ° C. or lower, more preferably 30 ° C. or lower.

Examples of the hard surface targeted by the present invention include floors, walls, ceilings, furniture and the like. The present invention is more preferably intended for floors. The present invention is suitably used for light treatment of floors such as living rooms, rooms, kitchens, bathrooms, and toilets. Examples of the material of the floor include tile, stone, wood (for example, parquet), linoleum, plastic and the like, and tile is preferable.

In the present invention, it is preferable to apply the treatment liquid of the present invention to a hard surface by a method such as coating, dipping, or compressing.

In the method for improving the feel of the present invention, it is preferable to dry the treatment liquid of the present invention applied to the hard surface as it is. In the present invention, it is preferable that the treatment liquid of the present invention applied to a hard surface is dried without wiping, for example, without wiping with water. That is, it is preferable to leave-on the treatment liquid of the present invention. In the present invention, it is considered that the treatment liquid of the present invention is left-on-treated to appropriately leave the component (a) on the floor surface and give a preferable feel when the user's skin comes into contact with the floor.

When the object is a floor, the treatment liquid of the present invention can be applied to the floor with a mop, a rag, etc., or a floor cleaning device (a floor pad or a polisher equipped with a floor brush, etc.). A method of mechanically applying using an automatic floor cleaning machine can be mentioned. At that time, the floor may be washed.

As described above, after being applied to a hard surface such as a floor, it is preferable to dry the treatment liquid of the present invention as it is. Drying is usually carried out by leaving it at the ambient temperature at which it was applied. It may be achieved by forcibly blowing room temperature or warmed air onto the place where the treatment liquid is applied.

In the present invention, the amount of the component (a) of the treatment liquid of the present invention is 5% by mass or more, further 10% by mass or more, and 20% by mass or less, further 15% by mass per 1 m ^{2 of} a hard surface, for example, a floor. It is preferable to apply it to a hard surface so as to be% or less.

<Feeling improver for hard surface>
The feel improver for hard surfaces of the present invention contains the component (a) and the component (b), and is the mass ratio of the content of the component (a) to the content of the component (b) (a) / ( b) is 0.001 or more and 5 or less.
Specific examples and preferable examples of the component (a), the component (b), and the like are the same as the method for improving the feel of the hard surface of the present invention. Further, the preferable range of the mass ratio (a) / (b) is the same as the method for improving the feel of the hard surface of the present invention.

The feel improver for hard surfaces of the present invention is suitable as a feel improver for floors.
The hard surface feel improver of the present invention is more suitable as a leave-on type floor feel improver.

The hard surface feel improver of the present invention is suitably used for preparing the treatment liquid of the present invention. That is, the hard surface feel improver of the present invention contains (a) component 0.0005% by mass or more and 0.5% by mass or less, (b) component 0.001% by mass or more and less than 1% by mass, and water. It may be a feel improver for a treatment liquid containing 15 mN / m or more and 60 mN / m or less in dynamic surface tension at 25 ° C.

The feel improver for a hard surface of the present invention may be a concentrated composition containing the component (a) and the component (b) at relatively high concentrations. When applied to a hard surface, for example, a floor, the concentrated composition is diluted with water to adjust the contents of the components (a) and (b) to, for example, the range of the treatment liquid of the present invention. And use it. In the concentrated composition, the content of the component (a) can be, for example, 1% by mass or more, further 2% by mass or more, and 10% by mass or less, further 5% by mass or less.

Further, the feel improver for a hard surface of the present invention may be a dilute composition containing the component (a) and the component (b) at relatively low concentrations. The contents of the components (a) and (b) of the dilute composition are within the range of the treatment liquid of the present invention, and the dynamic surface tension of the dilute composition at 25 ° C. is 15 mN / m or more and 60 mN / m or less. If so, it can be used as it is as the treatment liquid of the present invention. The dilute composition may also be used after being further diluted with water. In the dilute composition, the content of the component (a) is, for example, 0.0005% by mass or more and 0.5% by mass or less, and the content of the component (b) is, for example, 0.001% by mass or more and 1% by mass. Can be less than.

The feel improver for hard surfaces of the present invention preferably contains water. Water is used in the amount of the balance of the feel improver for hard surfaces.

The hard surface feel improver of the present invention can contain any component described in the treatment liquid of the present invention.

The hard surface feel improver of the present invention has a pH at 25 ° C. of preferably 5 or more, more preferably 6 or more, and preferably 10 or less, more preferably 8 or less.

The feel improver for hard surfaces of the present invention has a viscosity at 25 ° C. of preferably 2 mPa · s or more, more preferably 5 mPa · s or more, and preferably 1000 mPa · s or less, more preferably 100 mPa · s or less. is there. This viscosity is measured by the same method as the viscosity of the treatment liquid of the present invention.

Using the component (a) or (a') shown in Table 1 and the component (b) shown in Table 2, a treatment liquid which is a hard surface feel improving agent shown in Tables 3 to 6 was prepared and evaluated as follows. Was done. The treatment liquid was used at 25 ° C. The results are shown in Tables 3-6. The dynamic surface tension of the treatment liquid was measured by the bubble pressure method (BP100-MK1, manufactured by KRUSS, 25 ° C., capillary diameter 0.246 mm, measurement time: 10 ms to 10000 ms). The results are also shown in Tables 3-6. Further, in Tables 3 to 6, the mass ratios of (a) / (b) are shown with the component (a') as the component (a). The pH of each of the treatment solutions in the table was 7 at 25 ° C.

(Feel evaluation)
Using a mop (manufactured by Teramoto Corporation, SP water wiping mop SD replacement thread CL-796-000-0 (thread: cotton, ester, etc.)), use the treatment liquid shown in the table as a porcelain tile (manufacturer: Foshan Xiangu Yu). Ceramic Co., Ltd., Product name: POLISHED PORCELAIN TILE, Grade: Premium, Color: WHITE, Dimensions: 100 mm x 100 mm) was uniformly applied at 10 g / m ² . After drying the treatment liquid as it is without wiping it off, the feeling when touching the tile with a finger is a total of 5 adult males (3 people) and adult females (2 people) with untreated porcelain tiles as blanks. The name was judged according to the following criteria.
5 points: Feels particularly smooth compared to blanks 4 points: Feels slightly smoother than blanks 3 points: Equivalent to blanks 2 points: Feels slightly worse than blanks 1 point: Feels worse than blanks

(Appearance evaluation)
Using a mop (manufactured by Teramoto Corporation, SP water wiping mop SD replacement thread CL-796-000-0 (thread: cotton, ester, etc.)), use the treatment liquid shown in the table as a porcelain tile (manufacturer: Foshan Xiangu Yu). Ceramic Co., Ltd., Product name: POLISHED PORCELAIN TILE, Grade: Premium, Color: WHITE, Dimensions: 100 mm x 100 mm) was uniformly applied at 10 g / m ² . After the treatment liquid was dried as it was without being wiped off, a total of 5 adult males (3 persons) and adult females (2 persons) visually observed the appearance of the tiles and judged according to the following criteria.
5 points: Level with almost no wiping streaks Level 4: Slight wiping streaks remain but not at all Level 3 points: Slight wiping streaks remain but not worrisome Level 2 points: Wiping streaks remain and are worrisome Level 1 Point: Level where wiping streaks remain remarkably

The content of the component (a) in Tables 3 to 6 was set so that the surface area of the fine particles remaining per unit area was constant regardless of the particle size by the following calculation method.

<Calculation of component content (a)>
The content of the component (a) was set as follows.
For any fine particles with a spherical shape, uniform particle size, diameter d (m), and density ρ (g / m ³ ), the volume per particle is V = (4/3) π (d / 2) ³ ( m ³ ), the cross-sectional area is represented by S = π (d / 2) ² (m ² ).
Here, it is assumed that the fine particles are uniformly present in the treatment liquid. Assuming that the mass of the treatment liquid is W (g), the mass of the treatment liquid remaining per surface area A after mopping treatment is w (g), and the number of remaining particles is n, the number of particles N contained in the treatment liquid is N. It is represented by = n (W / w).
Further, after the mop treatment, when fine particles having a cross-sectional area S are present on the plane of the surface area A at a filling rate φ, the number of fine particles n is represented by n = φA / S. The filling rate indicates the ratio of the cross-sectional area of the fine particles existing per unit lattice area. For example, when the fine particles have a two-dimensional hexagonal close-packed structure, φ = 0.906 can be expressed.
The blending amount P (g) of the component (a) required for the fine particles to exist on the plane of the surface area A at the filling rate φ is
Equation (X)
P = ρVN = ρVn (W / w) = ρV (φA / S) (W / w) = (2/3) ρdφA (W / w)
Indicated by.

<Method of calculating the mass w of the residual treatment liquid>
The mass w of the treatment liquid remaining per unit area (A = 1 (m ² )) was set to 10 (g). The mass w of the residual treatment liquid is 223 with respect to the mop weight of the treatment liquid in a mop (manufactured by Teramoto Corporation, SP water wiping mop SD replacement thread CL-796-000-0 (thread: cotton, ester, etc.)). % After impregnation, apply on porcelain tile (Manufacturer: Foshan Xiangu Yu Ceramic Co., Ltd., Product name: POLISHED PORCELAIN TILE, Grade: Premium, Color: WHITE, Dimensions: 100 mm x 100 mm) and then from the mop. It is calculated from the mass of the treatment liquid transferred to the tile.
When the mass W of the treatment liquid is 100 (g), A (W / w) = 10.

<Calculation method of filling rate>
The filling rate φ is indicated by φ = φ _max / X. Here, φ _max is the filling rate when the fine particles have a two-dimensional hexagonal close-packed structure, and can be expressed as φ _max = 0.906. X is preferably X = 200 to 10000 in the treatment liquid of the present invention from the viewpoint of finishability and feel.

The content of the component (a) shown in Tables 3, 4, 5, and 6 is set so that the surface area of the fine particles remaining per unit area is constant regardless of the particle size.

<Calculation of (a) component content of Examples>
Tables 3 and 4 show the conditions of X = 1000.
That is, the filling rate φ is
φ = 0.906 / 1000 = 0.000906
Is.
As a calculation example, the content of the component (a) of Example 1-1 is shown.
The silicone composite powder 3 is fine particles having an average diameter of d = 5 (μm) and a density of ρ = 0.99 (g / cm ³ ).
The content P (g) of the silicone composite powder 3 contained in 100 g of the treatment liquid is based on the formula (X).
P = (2/3) ρdφA (W / w) = (2/3) × (5 × ^10-6 ) × (0.99 × 10 ⁶ ) × (0.906 / 1000) × 10 = 0.03 (G)
Is.
From the above calculation, the composition (mass%) of the component (a) of Example 1-1 was set to 0.03%.
Hereinafter, the composition (mass%) of each component (a) and component (a') was determined in the same manner.

In Table 5, X was appropriately changed for the purpose of showing the technical meaning of the mass ratio of the component (a) / component (b).

Table 6 shows the condition of X = 200.

Claims (8)

(A) One or more selected from compounds capable of forming solid fine particles having an average particle size of 0.7 μm or more and 30 μm or less and solid fine particles having an average particle size of 0.7 μm or more and 30 μm or less after drying [hereinafter referred to as component (a)]. A hard surface containing 0.0005% by mass or more and 0.5% by mass or less and water and having a dynamic surface tension of 15 mN / m or more and 60 mN / m or less at 25 ° C. applied to the hard surface and dried. How to improve the feel of. The method for improving the feel of a hard surface according to claim 1, wherein the treatment liquid contains (b) a surfactant [hereinafter referred to as a component (b)] in an amount of 0.001% by mass or more and less than 1% by mass. (B) The method for improving the feel of a hard surface according to claim 2, wherein the component is a polyether-modified silicone. The hard surface according to claim 2 or 3, wherein (a) / (b), which is the mass ratio of the content of the component (a) to the content of the component (b) in the treatment liquid, is 0.001 or more and 5 or less. How to improve the feel of. The method for improving the feel of a hard surface according to any one of claims 1 to 4, wherein the hard surface is the surface of the floor. The method for improving the feel of a hard surface according to any one of claims 1 to 5, wherein the treatment liquid is applied to a hard surface and then dried without wiping. (A) One or more selected from compounds capable of forming solid fine particles having an average particle size of 0.7 μm or more and 30 μm or less and solid fine particles having an average particle size of 0.7 μm or more and 30 μm or less after drying [hereinafter referred to as component (a)]. And (b) a surfactant [hereinafter referred to as (b) component], and (a) / (b), which is the mass ratio of the content of the component (a) to the content of the component (b), is 0.001. A feel improver for hard surfaces, which is 5 or less. (B) The feel improver for a hard surface according to claim 7, wherein the component is a polyether-modified silicone.