JPH04328188A - Article for building and building decoration, subjected to surface treatment - Google Patents

Abstract

PURPOSE:To obtain substrates or articles for building and building decoration, having excellent removal of water drops. CONSTITUTION:Substrates subjected to surface treatment with an isocyanate compound or articles for building and building decoration comprising the treated substrates as an constituent element. Glass having excellent required transparency is suitable as the substrates and window glass and mirrors are cited as the articles for building and building decoration. The substrates and the articles have excellent removal of water drops, excellent wear resistance, chemical resistance and weather resistance and semipermanently maintains effects thereof. Consequently, the articles are extremely excellent as articles for building and building decoration under a severe condition of use.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is applicable to buildings and buildings having surfaces to which water droplets are less likely to adhere or to which adhered water droplets can be easily removed.
This relates to construction goods.

0002

[Prior Art] Exterior and interior components of houses, buildings, and other buildings, interiors and exteriors of buildings, furniture and fixtures, and other architectural and construction products;
Alternatively, in the case of a base material that is a component of an article for building or construction, it is preferable that the surface of the article is always clean. 2. Description of the Related Art When raindrops, dust, dirt, etc. adhere to the surface of an article for construction and construction, or when moisture condenses due to the influence of atmospheric temperature and humidity, the appearance of the article is impaired. Discomfort and hygiene issues can also arise if it is a visible or human-touch surface.

[0003]Furthermore, the original functions of the surfaces of articles for construction and construction are significantly degraded. In particular, architectural and construction products that require transparency and see-through visibility (
For example, in the case of objects (such as window glass and mirrors), this type of phenomenon can lead to the object not even being able to achieve its original purpose.

[0004]Means for removing water droplets and the like (for example, removal by wiping) sometimes cause minute scratches on the surface. Further, foreign particles accompanying water droplets or the like may make such damage even more severe. Furthermore, it is well known that when moisture adheres to a glass surface, glass components dissolve into the moisture, causing the surface to erode and cause so-called burns. If strong friction is applied to remove this burn, fine irregularities are likely to occur. A see-through viewing area made of glass that is severely burnt or has minute irregularities on its surface has a degraded original function, and also causes problems in terms of securing the field of view due to severe light scattering on the surface.

[0005] In addition, moisture has a harmful effect on the surfaces of construction and construction products, promoting damage, contamination, coloring, corrosion, etc., and also impairs the electrical properties and mechanical properties of construction and construction products. It may also induce changes in properties, optical properties, etc.

[0006] Under these current circumstances, it is necessary to have properties such that there are few water droplets attached to the surface of objects for construction and construction, or the attached water droplets can be easily removed (hereinafter, these are simply referred to as water droplet removability).
There is a strong need to provide this. In order to make the surface removable from water droplets, surface treatment agents have been proposed in which, for example, silicone waxes, silicone oils made of organopolysiloxane, surfactants, and the like are directly applied.

However, many of these require pretreatment for coating, and there are problems in that coating unevenness tends to occur during coating. In addition, due to the low adhesion of the treatment agent itself to the substrate, long-term sustainability of water droplet removability has not been achieved, and the range of application of the treatment agent has been limited.

[0008] Furthermore, when considering the adverse effects of moisture, it is necessary to take measures not only for construction and construction products that will be manufactured in the future, but also for construction and construction products that are already in use. be. In this case, it is necessary to impart water droplet removability to each article simply by directly treating it at room temperature. for example,
When considering applying such a treatment to window glass that is already installed in a building, it is economically disadvantageous to replace the window glass, and it is also practical to bake the area after application. It is impossible. From this point of view as well, the current situation is that it is difficult to deal with this problem using the processing agents that have been proposed so far.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems. That is, in the process of researching and considering a treatment agent that can eliminate the drawbacks of conventional proposals, the present inventor found that it can be applied to many types of substrates and exhibits excellent water droplet removal properties. We have discovered a treatment agent and confirmed that various substrates treated with the treatment agent are extremely suitable as substrates with water droplet removal properties, particularly as articles for construction and construction, leading to the completion of the present invention. . Therefore, the present invention has water droplet removability, wear resistance,
The aim is to provide architectural and construction products that have excellent chemical resistance and weather resistance, and whose effects last semi-permanently.

0010

[Means for Solving the Problems] The present invention is the following invention that achieves the above objects. Articles for construction and construction, consisting of a base material having a surface treated with an isocyanate silane compound, or having the base material as a constituent element.

In the present invention, the isocyanate silane compound means a compound having a structure in which at least one isocyanate group is directly bonded to a silicon atom. This compound may have at least one organic group or may be a compound without an organic group such as tetraisocyanatesilane. Preferred is an organoisocyanate silane compound having at least one organic group bonded to a silicon atom (the organic group and the silicon atom are bonded via a carbon-silicon bond).

[0012] The surface treated with an isocyanate silane compound refers to a surface to which an isocyanate silane compound is chemically or physically bonded. Since the isocyanate groups are reactive, it is believed that isocyanate silane compounds are attached to surfaces primarily through chemical reactions. That is, it is considered that the isocyanate group is changed in the bonded state. For example, isocyanate groups are believed to react with silanol groups on the glass surface.

[0013] In the present invention, at least part of the performance of the treated surface, such as water droplet removability, abrasion resistance, chemical resistance, and weather resistance, is due to the reactivity of this isocyanate group, and the other part is due to the reactivity of the isocyanate group. This is thought to be due to the silicon atom directly bonded to this isocyanate group. Further, as described below, these performances can be further improved by selecting the organic group of the organoisocyanate silane compound. Further, from the viewpoint of bondability to the base material, it is more preferable that the number of isocyanate groups bonded to one silicon atom is two or more.

[0014] In the present invention, articles for construction and construction are articles that are attached to a building as described above, articles that are already attached to a building, or articles that are used together with a building even if they are not directly attached to the building. Refers to architectural articles, architectural articles such as furniture and fixtures, and the base materials (glass plates, etc.) that are the constituent elements of these articles. Specifically, glass plates for windows and window glasses, glass plates for roofs and glass roofs, glass plates for doors and doors into which they are fitted, glass plates for partitions, glass plates for greenhouses and greenhouses, and used in place of glass. Transparent plastic plates and architectural articles such as those mentioned above (window materials, roofing materials, etc.), wall materials made of ceramics, cement, metals, and other materials, mirrors and furniture containing them, display shelves and showcases. There is glass for use.

[0015] The article may consist solely of a surface-treated substrate, or may incorporate a surface-treated substrate. For example, the former type includes window glass plates, and the latter type includes furniture with built-in glass mirrors.

[0016] The type of base material for the building/construction article is not particularly limited. Examples include metals, plastics, glass, ceramics, other inorganic materials, organic materials, or combinations thereof (composite materials, laminated materials, etc.). In addition, the surface of the base material is not only the surface of the base material itself, but also the surface of the base material itself.
The surface may be made of a material different from the base material present on the base material surface, such as the surface of a coating film of a painted metal plate or the surface of a surface treatment layer of surface treated glass. Moreover, the shape of the base material is not limited to a flat plate, and it goes without saying that it may have any shape depending on the purpose, such as one having curvature on the entire surface or partially.

Particularly suitable substrates in the present invention are substrates made of transparent materials such as glass and transparent plastics, and the articles take advantage of their transparency. For example, window materials made of glass or transparent plastic, roofing materials, mirrors, etc.
etc. This is because the see-through visibility is likely to deteriorate due to adhesion of raindrops, dust, dirt, etc., and there is a great possibility that problems will occur due to this. Glass is particularly preferred as the base material. The isocyanate silane compound reacts with the silanol groups of the glass and firmly bonds to its surface. It is also possible that silicon atoms also bond to the glass surface.

Surface treatment of the substrate is usually carried out by applying an isocyanate silane compound or a composition containing the same to the surface.
This is done by bonding isocyanate silane compounds to the surface. The composition is preferably a solution containing a solvent. Further components may be present in this solution. Other components include, for example, organopolysiloxanes and acids as described below. It is thought that the isocyanate silane compound comes into contact with the surface of the substrate and bonding occurs due to application to the surface of the substrate or subsequent volatilization of the solvent.

Although the thickness of the surface treatment layer produced by this surface treatment is not particularly limited, it is preferably extremely thin. The preferred layer thickness is 2μ or less. Moreover, the lower limit is the monomolecular layer thickness. 1 of the present invention
One feature is that surface treatment does not require particularly high temperatures. The treatment can be carried out at room temperature, and the removal of the solvent does not require a higher temperature than that required. Of course, if necessary, high temperatures can be used as long as the effects of the treatment are not lost.

Preferred compounds as the isocyanate silane compound are compounds having 1 to 2 silicon atoms to which isocyanate groups are bonded. This compound may have silicon atoms to which no isocyanate groups are attached. However, the presence of a silicon atom to which a hydrolyzable group is bonded is not preferable. A preferred isocyanate silane compound is a compound represented by the following formula (A) or (B). In the following, the compound represented by formula (A) is also referred to as compound (A), and the compound represented by formula (B) is also referred to as compound (B).

(A) (OCN)3-a-b(R1)a(
R2)bSi-Y-Si(R3)c(R4)d(NCO
)3-c-d However, R1, R2, R3, R4 are independently hydrogen or an organic group having 1 to 16 carbon atoms, and a and b are independently 0, 1, 2
Integers c, d that satisfy 0≦a+b≦2
are independently 0, 1, or 2, and are integers satisfying 0≦c+d≦2, and Y represents a divalent organic group.

(B) R5eR6gR7hSi(NC
O) 4-e-g-h However, R5, R6, and R7 are independently hydrogen or an organic group having 1 to 16 carbon atoms, and e, g, and h are independently 0, 1, 2, 3, and 0≦ e+g+h ≦
Represents an integer that satisfies 3.

Compound (A) is a compound having two silicon atoms to which isocyanate groups are bonded, and compound (B)
is a compound having one silicon atom to which an isocyanate group is bonded. Compound (A) is one of the organoisocyanate silane compounds (since Y is an organic group), and compound (B) is one of the organoisocyanate silane compounds when it has at least one organic group.
It is a seed. R1 to R7 are preferably organic groups rather than hydrogen atoms. In particular, all R present
1 to R7 are preferably organic groups.

In compounds (A) and (B), the number of isocyanate groups bonded to silicon atoms is preferably two or more per silicon atom. This is because it is thought that the more isocyanate groups there are, the stronger the bond to the substrate surface becomes.

When R1 to R7 are organic groups, the organic group is a hydrocarbon group such as an alkyl group, an alkenyl group, a cycloalkyl group, or an aryl group; a halogenated hydrocarbon group such as a chloroalkyl group or a polyfluoroalkyl group; hydroxyl group, epoxy group, amino group, mercapto group, carboxyl group,
Preferred are (halogenated) hydrocarbon groups having other functional groups, and (halogenated) hydrocarbon groups having an ester bond, ether bond, thioether bond, imino bond, amide bond, or other linking bond in the middle of the carbon chain. . Particularly preferred is an organic group having a hydrocarbon group and a polyfluoroalkyl group.

The above-mentioned preferred hydrocarbon groups are preferably alkyl groups having 1 to 16 carbon atoms and aryl groups. In particular, all of R1 to R7 are alkyl groups having 4 or less carbon atoms (hereinafter referred to as lower alkyl groups), or R1 to R2, R3 to R4, or R
R1 to R7 in which at least one of 5 to R7 is an alkyl group other than a lower alkyl group and the others are lower alkyl groups;
R7 is preferred. A particularly preferred lower alkyl group is a methyl group.

More preferred compound (A) and compound (B) are organoisocyanate silanes having two or more fluorine atoms. That is, in compound (A), Y is a divalent organic group having two or more fluorine atoms, or if not, at least one of R1 to R4 present is a monovalent organic group having two or more fluorine atoms. It is a compound that is an organic group. Of course, Y and R1~
At least one of R4 may be an organic group having two or more fluorine atoms.

In compound (B), R5-
1 in which at least one of R7 has two or more fluorine atoms
It is a compound that is a valent organic group. In these cases, the organic group not having a fluorine atom is preferably the above-mentioned hydrocarbon group. In addition, the organic group having two or more fluorine atoms is
Carbon atoms that do not have fluorine atoms in silicon atoms (e.g.
It is preferable to bond with a methylene group).

When Y is a divalent organic group having two or more fluorine atoms, it is a polyfluoroalkylene group,
Polyfluoroxaalkylene groups (at least one ether bond exists between the carbon chains of the alkylene group), and polyfluorothioxaalkylene groups (at least one thioether bond exists between the carbon chains of the alkylene group) is preferred. Particularly, the moieties bonded to the silicon atoms at both ends are polymethylene groups (particularly dimethylene groups), and the intermediate moiety between them is a perfluoroalkylene group, a perfluorooxaalkylene group, or a perfluorothioxaalkylene group. Organic groups are preferred. The carbon number of these Y is 6 to 30, especially 6 to 1
6 is preferred.

Further, when Y is not a divalent organic group having two or more fluorine atoms, it is preferably an alkylene group, an oxaalkylene group, or a thioxaalkylene group. The number of carbon atoms is preferably 2 to 30, particularly preferably 2 to 16.

When any of R1 to R7 is a monovalent organic group having two or more fluorine atoms, it is a polyfluoroalkyl group, a polyfluorooxaalkyl group, a polyfluorothioxaalkyl group, or any of these. An organic group in which a group and a hydrocarbon group such as an alkylene group are bonded through an ester bond or other connecting bond as described above (the other end of the hydrocarbon group is bonded to a silicon atom) is preferable. A polyfluoroalkyl group, a polyfluorooxaalkyl group, and a polyfluorothioxaalkyl group are those groups in which the end bonded to the silicon atom or the vicinity thereof is an alkylene group (in particular, a dimethylene group), and the other part is perfluoro. It is preferable that

The perfluoro moiety of the monovalent organic group is preferably a perfluoroalkyl group having 3 or more carbon atoms, a perfluorooxaalkyl group, or a perfluorothioxaalkyl group, particularly a perfluoroalkyl group having 3 to 16 carbon atoms. is preferred.

Specific examples of Y and R1 to R7 are listed in the following specific examples of compound (A) and compound (B). In particular, the Rf group in the following specific examples is a polyfluorocarbon having a perfluoroalkyl group moiety represented by CnF2n+1CmH2m- (in this chemical formula, n is an integer of 3 to 16 and m is an integer of 2 to 4). As the RF group in the following specific examples, the alkyl group is particularly preferably CnF2n+1- (in this chemical formula, n is an integer of 3 to 16).

Specific examples of compound (A) and compound (B) are shown below. However, compound (A) and compound (B
) is not limited to these specific examples. In the chemical formula below, x, n, and m each represent an integer of 1 or more, R represents an alkyl group, Rf represents a polyfluoroalkyl group, and RF represents a perfluoroalkyl group. In these chemical formulas, x is preferably 2 to 8, R is a lower alkyl group, and Rf is preferably a dimethylene group having a perfluoroalkyl group.

Examples of compound (A).

[0036]

[Chemical formula 1]

[0037]

[Case 2]

[0038]

[Chemical formula 3]

[0039]

[C4]

[0040]

[C5]

[0041]

[C6]

[0042]

[C7]

[0043]

[Chemical formula 8]

[0044]

[Chemical formula 9]

[0045]

[Chemical formula 10]

Examples of compound (B).

[0047]

[Chemical formula 11]

[0048]

[Chemical formula 12]

[0049]

[Chemical formula 13]

Furthermore, in the present invention, it is preferable to use an organopolysiloxane together with the isocyanate silane compound in order to enhance the effect of surface treatment with the isocyanate silane compound. Suitable organopolysiloxanes include those called silicone oils or modified silicone oils. Hereinafter, this organopolysiloxane will also be referred to as compound (C). This compound (C) preferably has a polymerized unit represented by the following formula (C).

(C) [-SiX(CH3)-O-]
In addition, in this formula, X represents an organic group having 1 to 16 carbon atoms. This organic group is preferably the same organic group as R1 to R7 described above (preferably one without a fluorine atom). In particular, alkyl groups, aryl groups, arylalkyl groups,
An aminoalkyl group, a hydroxyalkyl group, a hydrocarbon group having a polyoxyalkylene chain, etc. are preferred. Most preferred is a lower alkyl group.

Compound (C) has the effect of improving the water droplet removability and abrasion resistance of the coating formed by the isocyanate silane treatment. This compound (C) preferably does not have a hydrolyzable group. Compound (C) may be used as it is in a composition for surface treatment, or it may be added to the composition after being decomposed with an acid such as sulfuric acid, hydrochloric acid, or acetic acid. In addition, the viscosity of compound (C) is that of compound (A)
It is preferable to decide in consideration of the combination with compound (B), and in particular, the viscosity at 25°C is 0.5 to 500.
Centistokes (CS) are preferred.

Specific examples of compound (C) are shown below, but compound (C) is not limited thereto.

[0054]

[Chemical formula 14]

[0055]

[Chemical formula 15]

In the present invention, the composition for surface treatment must contain either compound (A) or compound (B). Of course, there is no problem even if both compounds are contained, and their mixing ratio may be arbitrary. In addition, the compound (C
) When adding components, compound (C) and compound (A)
The ratio between the compound (B) and/or the compound (B) can be set arbitrarily depending on the purpose. Preferably, compound (A)
, (B) and (C), the amount of compound (C) or its decomposition product is preferably 1 to 40% by weight. If the amount of compound (C) is too small, the abrasion resistance and workability will tend to decrease, and if it is too large, not only will the abrasion resistance decrease, but also there is a risk that a sticky feeling will remain when the surface is touched.

Compound (C) also contributes to improving the water droplet removability of the film and the durability of the film through interaction with compound (A) and/or compound (B). Although the detailed mechanism is unknown, the molecular chain of compound (C)
Complexly intertwined with compound (A) and compound (B),
This is thought to be due to the fact that the microscopic distribution of various organic groups, particularly polar groups and ionic bonds, present on the surface is controlled as a result, and a surface structure optimal for removing water droplets is achieved.

It is believed that the molecular entanglement between the selected compounds greatly contributes to further increasing the durability. In addition, compounds (A), (B), and (C) are all substances with low surface free energy, and friction on the surface is caused by movement of the free compounds partially present in the coating through the extreme surface layer. Reducing resistance is also considered to be part of the reason for good wear resistance.

[0059] Other compounds and additives may be added to the processing agent in the present invention depending on the purpose. Additives may be selected in consideration of reactivity and compatibility with each component, and ultrafine particles of various metal oxides, various resins, etc. may also be added. Furthermore, if coloring is required, dyes, pigments, etc. may be added. These additives are compounds (A), (B), (
Total of C) 0.01 to 20 per 100 parts by weight
Parts by weight, particularly 0.1 to 5 parts by weight, are preferred. Excessive addition is undesirable because it reduces the water droplet removability, abrasion resistance, etc. of the present invention.

[0060] The above composition may be applied directly to the substrate to be coated by hand wiping or the like, or it may be dissolved or diluted with an organic solvent and used in the form of a solution. be. In this organic solvent solution,
The total amount of compounds (A), (B), and (C) to be included is determined by taking into account film formation properties (workability), stability, film thickness, and economic efficiency, but is 0.1 to 30% by weight. % is preferred.

As the organic solvent, various solvents such as acetic acid esters, aromatic hydrocarbons, halogenated hydrocarbons, ketones, and ethers can be used, but reactive functional groups (
Hydroxyl groups, etc.) are undesirable because they react with the isocyanate groups contained in compound (A) and compound (B). However, an organic solvent having a functional group with low reactivity such as isopropyl alcohol can be used. The diluting solvent is not limited to one type, and it is also possible to use a mixed solvent of two or more types.

[0062] Although no special pretreatment is required for the treatment, there is no particular problem in performing it depending on the purpose. Treatment or discharge treatment by plasma irradiation or the like can be performed.

The film is formed by applying a liquid material containing an organic solvent containing the prepared composition to the surface by a conventional treatment method, such as brush coating, flow coating, spin coating, dipping coating, spray coating, etc. It may be dried in the atmosphere or in nitrogen air at room temperature. but,
There is no problem with heating for purposes such as increasing the drying rate. When heating, the temperature and time may be set taking into consideration the heat resistance of the base material.

[0064] The thickness of the formed film can be appropriately controlled by the composition concentration of the liquid containing the composition, coating conditions, heating conditions, etc. The coatings of the present invention have a relatively low refractive index and therefore also provide low reflectivity. If such an effect is expected, the thickness of the coating may be controlled to a thickness at which optical interference occurs. In particular, in order to exhibit water droplet removability, the film thickness of the film should theoretically be at least a monomolecular layer, and taking economic effects into consideration, it is desirable that the film thickness be 2 μm or less as mentioned above.

[0065] In such a surface-treated base material, water droplets that come into contact with the surface are repelled due to the water droplet removability and are difficult to adhere to, and even if they do adhere, the amount is small, and the attached water droplets can be easily removed. . Further, even in environments where water droplets freeze, it does not freeze, and even if it does freeze, it thaws extremely quickly. Furthermore, since there is almost no adhesion of water droplets, the number of periodic cleaning operations can be reduced, and cleaning is extremely easy, which is very advantageous in terms of maintaining aesthetic appearance.

[0066]

[Examples] The present invention will be explained in detail below using Examples, but the present invention is not limited to the Examples. The various evaluation methods implemented in the examples are as follows.

1. Water droplet removability 1-a) The falling angle of a water droplet having a diameter of 2 mm was measured. Different 5 on the surface
Measurements were taken at several locations, and the average value is shown. 1-b) After spraying water over the entire surface for about 1 hour from a nozzle held at a distance of 20 cm from the sample surface, water droplets remaining on the surface were observed with the naked eye and evaluated using the following evaluation criteria.

A: No water remains on the sample surface. B: A little water remains on the sample surface. C: Considerable water droplets remain on the sample surface. D: Water wets and spreads on the sample surface.

2. Abrasion resistance tester: Taber type rotary abrader (Toyo Seiki Seisakusho Co., Ltd.) Test conditions:
Wear wheel H-22, load 1kg, number of wears 300 times. A wear resistance test was conducted using the above method, and water droplet removability after the test was evaluated.

3. Weather resistance test UV irradiation for 8 hours (70
The test was carried out in 100 cycles, with one cycle consisting of 4 hours of wet exposure (at 50°C). A weather resistance test was conducted using the above method, and water droplet removability after the test was evaluated.

4. Boiling test: Immersed in boiling water for 1 hour. Water droplet removability after the test was evaluated.

5. Compound used (a) C8H17Si (
NCO)3(b) CH3Si(NCO)3(c) (
CH3)2Si(NCO)2(d) (CH3)3Si
NCO(e) Si(NCO)4

(f) Ph-Si(NCO)3(g)
(OCN)3SiC2H4Si(NCO)3(h) (
OCN)2(CH3)SiC2H4Si(CH3)(N
CO)2(i) C8F17C2H4Si(NCO)3
(j) (OCN)3SiC2H4C6F12C2H4
Si(NCO)3

(k) (CH3)3S
iO-[Si(CH3)2-O-]m-Si(CH3)
3 (m, n: integers of 1 or more. Viscosity: 50 cs) (l
) (CH3)3SiO-[Si(CH3)2-O-]
m--[Si(CH3)(C3H6NH2)-O-]n
-Si(CH3)3 (m, n: integers of 1 or more)

[Preparation of Treatment Agent 1] 19.3 g of (a) and 1980.0 g of butyl acetate were added to a flask equipped with a stirrer and a thermometer. Furthermore (k) 0.7
After adding g, stirring was continued for one day and night while maintaining the temperature of this solution at 25° C. to obtain Treatment Agent 1.

[Preparation of Processing Agent 2] In a flask equipped with a stirrer and a thermometer, (b) 15.3 g, (c)
1.1 g, (d) 0.8 g, and (e) 1.4 g were mixed, and 1985.3 g of butyl acetate was added. moreover(
After adding k) 0.3 g, (l) 0.4 g,
Stirring was continued for a day and night while maintaining the temperature of this solution at 25° C. to obtain Treatment Agent 2.

[Preparation of Treatment Agent 3] In a flask equipped with a stirrer and a thermometer, (a) 18.4 g, (g)
10.1 g were mixed, and 2561.3 g of toluene was added. After further adding 2.1 g of (k) and 1.3 g of (l), stirring was continued for one day and night while maintaining the temperature of this solution at 25° C. to obtain a treatment agent 3.

[Preparation of Treatment Agent 4] In a flask equipped with a stirrer and a thermometer, (a) 12.1 g, (b)
5.1 g, (f) 5.1 g, and (h) 7.8 g were mixed, and 1877.7 g of toluene was added. Furthermore (k
After adding 3.2 g of sulfuric acid and 0.4 g of sulfuric acid, stirring was continued for 5 days while maintaining the temperature of this solution at 25° C. to obtain Treatment Agent 4.

[Preparation of Treatment Agent 5] In a flask equipped with a stirrer and a thermometer, (i) 19.9 g, (j)
10.3 g, ethyl acetate 985.3 g, isopropyl alcohol 54.2 g, Fronsolve (R-1
13) 456.3 g and 0.7 g of sulfuric acid were added. After further adding 0.7 g of (k), stirring was continued for 5 days while maintaining the temperature of this solution at 25° C. to obtain Treatment Agent 5.

[Preparation of Treatment Agent 6] In a flask equipped with a stirrer and a thermometer, (a) 9.8 g, (e)
2.3 g, (g) 3.5 g, and (i) 9.8 g were mixed, butyl acetate 985.3 g, isopropyl alcohol 33.2 g, and Fronsolve (R-113) 20
0.0 g was added. After further adding 0.8 g of (k), stirring was continued for one day and night while maintaining the temperature of this solution at 25° C. to obtain a processing agent 6.

[Preparation of Treatment Agent 7] In a flask equipped with a stirrer and a thermometer, (a) 120.0 g, (b)
) 7.8 g, (e) 3.5 g, (g) 2.4
988.8 g of ethyl acetate and 23.5 g of isopropyl alcohol were added. Furthermore (k) 4.
After adding 5 g of sulfuric acid and 0.7 g of sulfuric acid, stirring was continued for 5 days while maintaining the temperature of this solution at 25° C. to obtain Treatment Agent 7.

[Preparation of Treatment Agent 8] In a flask equipped with a stirrer and a thermometer, (a) 18.4 g, (g)
After mixing 10.1 g and adding 2561.3 g of toluene, stirring was continued all day and night while maintaining the temperature of this solution at 25° C. to obtain Treatment Agent 8.

[Preparation of Processing Agent 9] In a flask equipped with a stirrer and a thermometer, add isopropyl alcohol 256
Fill 1.3 g, (k) 2.1 g, (l) 1.
After adding 3 g of the solution, stirring was continued for one day and night while maintaining the temperature of the solution at 25° C. to obtain a processing agent 9.

[Example 1] 10 cm x 10 cm (thickness 3
A glass plate of 11 mm) was immersed in a solution of treatment agent 1.
A sample test piece was prepared by pulling up at a speed of m/min. Table 1 shows the results of evaluating this test piece.

[Examples 2 to 8] Tests and evaluations were carried out in the same manner as in Example 1, except that Treatment Agent 1 in Example 1 was changed to Treatment Agents 2 to 8. The results are also shown in Table 1.

[Comparative Example 1] Testing and evaluation were carried out in the same manner as in Example 1, except that Treatment Agent 1 in Example 1 was changed to Treatment Agent 9. The results are also shown in Table 1.

[Example 9] The test piece obtained in Example 5, on which a film was formed, was immersed in the chemicals shown in Table 2 for 24 hours, taken out and washed immediately. The water droplet removability was confirmed and the results are shown in Table 2. [Example 10]

[0088] The method of Example 5 was applied to the surface of an architectural glass plate to form a film. The architectural glass plate thus obtained was attached to a building. This window glass was subjected to an exposure test for one month, and the state of adhesion of dirt and dust to the surface of the window glass, as well as the state of adhesion of water droplets in rainy weather, was observed with the naked eye every day.

[0089] As a result, no water stains due to dirt, dust, or water droplets were observed, and even if they were found to occur, they could be easily removed by wiping lightly with tissue paper. . The time and effort required to clean window glass has also been greatly simplified. In addition, during rainy weather, water droplets on the surface are repelled, preventing water from spreading, making it easy to maintain a clear field of vision. Furthermore, on rainy and windy days, water droplets move quickly due to interaction with wind pressure, making it easier to secure a clear field of view.

Furthermore, an exposure test was conducted in an environment (0°C to -5°C) where water droplets attached to untreated window glass would freeze, or where moisture in the air would condense and freeze on window glass. No ice formation was observed on the window glass surface. Next, under an even more severe low temperature environment (-10
(°C to -15°C), freezing was observed on the window glass, but the thawing was rapid due to the temperature rise, and there was a significant difference compared to untreated window glass.

[Example 11] An exposure test was conducted by changing the architectural glass plate of Example 10 to a heat-reflecting architectural glass plate ("Sunlux SS8" manufactured by Asahi Glass Co., Ltd.). As a result, the same effects as in Example 10 were confirmed.

[Example 12] The surface of an architectural window glass that has been installed in a building and used regularly for one year is polished with cerium oxide, the abrasive material is thoroughly washed away with water, and the moisture is completely removed with a dryer. , completely removed water scale, dirt, dust, etc. that had already accumulated on the surface. The entire surface of the cleaned window glass was wiped with a cotton cloth impregnated with treatment agent 5 in the same manner as waxing, and dried. After sufficiently drying, it was confirmed that a film had been formed on the entire surface by pouring water on it. After that, a test similar to Example 10 was conducted,
As a result, good water droplet removability similar to that of Example 10 was confirmed.

[0093]

[Table 1]

[0094]

[Table 2]

[0095]

[Effects of the Invention] As is clear from the examples, the base material for architecture and construction and the article for construction and construction of the present invention have excellent effects. That is, 1. Excellent ability to remove water droplets, remove dust,
There is no dirt, water droplets, or water stains, and even if they do occur, they can be easily removed, blocking the harmful effects of water, and simplifying cleaning. . 2. It has excellent water droplet removal properties and maintains its state semi-permanently.

3. It has excellent chemical resistance and is effective even when used along coastlines or on ships that come into direct contact with seawater. 4. It does not require any special pretreatment and is highly economical. 5. It can also be applied to architectural and construction materials that are already in regular use.

[0097] The above-mentioned effects cannot be expected with conventional materials, and it is expected that the range of application will be expanded to fields where it could not be used until now.

Claims (10)

[Claims] 1. An article for construction and construction, comprising a base material having a surface treated with an isocyanate silane compound, or having the base material as a constituent element. 2. The architectural/construction article according to claim 1, wherein the treated surface is a surface obtained by applying an isocyanate silane compound or a composition containing the same to the surface and bonding the isocyanate silane compound to the surface. 3. The building and construction article of claim 1, wherein the substrate having the treated surface is a substrate made of a transparent material. 4. The building/construction article according to claim 3, wherein the base material is glass. 5. The isocyanate silane compound has the following formula (A
) or (B), the building/construction article according to claim 1. (A) (OCN)3-a-b(R1)a(R2)bSi
-Y-Si(R3)c(R4)d(NCO)3-c-d However, R1, R2, R3, and R4 are independently hydrogen or an organic group having 1 to 16 carbon atoms, and a and b are independently 0 ,1,2
Integers c, d that satisfy 0≦a+b≦2
are independently 0, 1, or 2, and are integers satisfying 0≦c+d≦2, and Y represents a divalent organic group. (B) R5eR6gR7hSi(NCO)4-e-
gh However, R5, R6, R7 are independently hydrogen or an organic group having 1 to 16 carbon atoms, e, g, h are independently 0, 1
, 2, 3 and represents an integer satisfying 0≦e+g+h≦3. 6. In formula (A), Y is an alkylene group, and when there is an organic group bonded to a silicon atom, at least one of the organic groups is an alkyl group, and formula (B)
6. The building/construction article according to claim 5, wherein when an organic group bonded to a silicon atom is present in the organic group, at least one of the organic groups is an alkyl group. 7. In formula (A), Y is a divalent organic group having two or more fluorine atoms, or there is an organic group bonded to a silicon atom, and at least one of the organic groups is present.
is an organic group having a polyfluoroalkyl group, and in formula (B) there is an organic group bonded to a silicon atom, and at least one of the organic groups is an organic group having a polyfluoroalkyl group. Architectural and construction goods. 8. In formula (A), Y is a polyfluoroalkylene group, or an organic group in which an organic group bonded to a silicon atom is present and at least one of the organic groups has a perfluoroalkyl group, 6. The building/construction article according to claim 5, wherein in formula (B), there is an organic group bonded to a silicon atom, and at least one of the organic groups is an organic group having a perfluoroalkyl group. 9. The building/construction article according to claim 2, wherein the composition containing the isocyanate silane compound further contains an organopolysiloxane. 10. The organopolysiloxane has the following formula (C
10. The building/construction article according to claim 9, which is an organopolysiloxane having a repeating structural unit represented by: (C) [-SiX(CH3)-O-] However, X
represents an organic group having 1 to 16 carbon atoms.