Method for forming antifouling coating and antifouling material having antifouling coating

Specification Antifouling material provided with the formation method Hot defense [ of an antifouling property coat ] * coat [Field of the Invention]

On the substrate which has the surface constituted by the present invention, a plastic, or rubber The photocatalyst arranged and amorphous type Peroxy acid which does not have photocatalyst ability substantially Formation method of the Prevention * coat containing a tongue, Talk and Prevention formed by this gentleman method * Use the antifouling material provided with the Foulness coat.

[Description of the Prior Art]

When photocatalysts, such as titanium oxide, are irradiated with ultraviolet rays or visible light, it is Active to the surface of a photocatalyst. In order that sex oxygen may generate, this active oxygen -- organic matters, such as bacteria and oil, nitrogen oxide, etc. it becomes possible to decompose inorganic gas -- again -- the surface of a photocatalyst -- water, familiarity, and To Since it is and a hydrophilic group increases, water spreads on a photocatalyst and float dirt etc. It becomes possible. Therefore, they are air purification, deodorization, clean water, antibacterial properties, and self Cree about a photocatalyst. Examination for using it for Jung's object is performed widely.

However, a photocatalyst is supported on the substrate constituted by a plastic and rubber. When carrying out, A photocatalyst, a plastic, and problem of bad Les in adhesiveness with rubber Problem that a plastic and the rubber itself will be decomposed into other' by the photocatalyst It turns out that it is generated. From decomposition by a photocatalyst to for this reason, plastic Up An adhesive good paint [ It was ] which can protect rubber is desired.

As a paint which solves this problem, it is J P. -- A -- 7 1 7 1 4 0 No. 8 gazettes are organic systems, such as inorganic system binders, such as water glass and colloidal silica, or silicone series polymer. The method of pasting up a photocatalyst on a base is indicated via a binder. carrying out -- power it carries out -- this -- This which a photocatalyst is laid [ This ] underground into a binder and fully demonstrates the decomposition function of a photocatalyst in a method It cannot do. furthermore -- silicone series polymer -- a plastic and rubber -- self--- It is thought that degradation of the body cannot fully be controlled. Colloidal Siri which obtains substantial coat intensity in the case of the paint which makes a subject silica which made power the start Because -- To -- 5 of the melting temperature of silica 0 A paint must be heated more than 0 °C. this -- a sake -- this temperature -- bearing -- not having -- softening temperature -- it is low -- a plastic -- and -- rubber -- composition The problem that this paint cannot be used is on the substrate carried out. Especially since substantial coat intensity is not obtained in heating below the Thilly power melting temperature, it is outdoors. When this paint is used, it is thought that it is a problem.

J P -- A -- 9 2 6 2 4 8 No. 1 gazettes are a photocatalyst and amorphous type titanium oxide. A coat containing sol is indicated. Amorph end type titanium peroxide sol is a substrate. It has indicated excelling from a point of prevention from decomposition by adhesiveness and a photocatalyst. J P -A - 10 0 5 3 4 3 No. 7 gazette is amorphous type peroxidation Chi on a base. It is an amorphous type in a uniform-among gas dispersion state about the photocatalyst after coating tongue sol. The method of making it adhere to a titanium peroxide layer is indicated.

[Problem(s) to be Solved by the Invention]

however, It was whose paint containing amorphous type titanium peroxide sol is a basin system paint Because -- when this paint is applied on a plastic or rubber, since familiarity to water, a plastic and water, and rubber is bad, the coat formation pasted up uniformly and firmly is difficult. It is J P to this problem. -- A -- 2 0 0 0 2 8 0 3 9 No. 7 gazette, It is Peracid on an organic group object. Titanium peroxide and surface-active agents, such as a Noyuon system surface-active agent and silicone surfactant which are used when applying the Anatase type titanium oxide dispersion liquid containing-izing titanium The coating liquid for middle tunics to contain is indicated. Before this coating liquid for middle tunics, and dryness In order that compatibility with an organic group object may be high and after dryness may present hydrophilicity, it is the above-mentioned basin system paint. (oxidization Chi tongue dispersion liquid) It is said that familiarity is good. carrying out -- power it carries out -- This which blends a surface-active agent it becomes a cost overrun -- again -- adhesive strength with the above-mentioned basin system paint, a plastic, or rubber Although improved a little, adhesive strength with it is not obtained. Sake, [ the bad homogeneity of adhesion and ] [ firm ] problem that sufficient pollution control effect by a photocatalyst cannot be acquired Because -- To .

Therefore, the surface where the subject of the present invention is constituted by a plastic or rubber On the plastic of the substrate which it has, or the surface of rubber, a photocatalyst and amorphous type Peracid It is plus when forming an antifouling property coat using the paint of the basin system containing-izing titanium. tic -- or the coat pasted up uniformly and firmly is formed on the surface of rubber -- coat form It is providing Formation method.

another subject of the present invention contains a photocatalyst and amorphous type Peroxy acid titanium the antifouling property coat has pasted up uniformly and firmly on tic [ brass ] or the rubber surface -- it is providing the antifouling material provided with the antifouling property coat.

[Means for Solution]

Artificers are constituted by a plastic or rubber as a result of continuing examination wholeheartedly. Les, It has photocatalyst ability substantially with a photocatalyst arranged on a treated surface of a substrate which has Surface. It is a formation method of an antifouling property coat containing amorphous type titanium peroxide without Listen, and is Buddy. The, a process of performing dry processing for introducing a hydrophilic group into a treated surface of the above-mentioned substrate -- and Above Amorpha which does not have photocatalyst ability substantially with a photocatalyst on a treated surface after account dry processing An antifouling property coat is formed by applying a basin system paint containing A type titanium peroxide. Process to carry out, including -- a formation method of an antifouling property coat characterized by things -- the above-mentioned subject -- solution It discovered that it could decide and resulted in completion of an invention. the above-mentioned antifouling property coat It does not have photocatalyst ability substantially on a process to form and a treated surface after the above-mentioned dry processing. Amor -- face -- applying a basin system paint containing type titanium peroxide -- The 1 coat Process to form, A basin system paint containing a photocatalyst is applied on a The 1 coat. A process of forming The 2 coat, and intermediary Stomach [ from ] are also good.

As far as the present invention is concerned The word an "antifouling property coat", Photocatalyst contained in a coat A decomposition function and a hydrophilic function are used, A coat's own pollution control (self cleaning, antibacterial properties) Deodorization, air pollution prevention, clean water besides a coat which can be performed It says also including a coat which can perform pollution control of circumference atmosphere like. moreover It is constituted by a plastic or rubber in the word a "place Reason side", and a substrate. It is all or some of surfaces, and says a portion in which an antifouling property coat should be formed. Present invention According to the film formation method, it is the quantity of reactivity [ top / of rubber / plastic / of a substrate /, or surface ]. After performing dry processing which is and introduces a hydrophilic group, It has photocatalyst ability substantially with a photocatalyst. In order to apply a basin system paint containing amorphous type titanium peroxide which is not, plus tic -- or familiarity by rubber and a basin system paint is good, and uniform to a treated surface -- and -- firm -- adhesion -- A coat with hydrophilicity which shows Was done and an outstanding photocatalyst operation, and good weatherability is formed. To et al. A plastic or rubber on the surface of a substrate does not decompose with a photocatalyst.

The 1 coat -- the above-mentioned Amor -- face -- everything but type titanium peroxide -- substantial -- photocatalyst ability Amorphous type acid Y titanium which it does not have may contain. Above Amorphous type fault which does not have photocatalyst ability substantially besides a photocatalyst in the 2nd coat Acid Y titanium may contain. Thickness of The 1 coat and The 2 coat is 0.0. It is preferred that it is the range of 2*4 m. It excels in respect of a photocatalyst and photocatalyst ability. It is preferred to use titanium oxide. Anatase type oxidization Titanium as a photocatalyst If Le and amorphous type titanium peroxide sol which does not have photocatalyst ability are used, Hydrophilicity which shows a photocatalyst operation which pasted up uniformly and firmly and was excellent on a treated surface, and weatherability A good coat is not only formed, but a coat whose transparency it is smooth and is high is formed. Even if a surface-active agent and Z, or a hydrophilic agent contains further in a Prevention * coat It is good.

the above-mentioned dry processing -- plasma discharge processing, ultraviolet exposure processing, and corona discharge treatment -- someday -- it is -- a thing is preferred. Plasma discharge processing, argon, oxygen, or nitrogen gas atmosphere It is preferred to carry out in mind. Ultraviolet exposure processing is 1. 5 0*3 6 Wavelength of the range of 5 n m It is preferred to carry out using ultraviolet rays which it has, and it is a water vapour atmosphere about the above-mentioned ultraviolet exposure processing. Or it is preferred to carry out in ozone atmosphere. Water is made to adhere on the above-mentioned treated surface especially. It is preferred to perform ultraviolet exposure processing after It was.

either one of corona discharge treatment or two electrodes are covered qualitatively of an insulator -- and corona discharge treatment arranged by both two above-mentioned electrodes approaching on a treated surface Use a device. It generates by carrying out the seal of approval of the high frequency voltage between two above-mentioned electrodes. It is preferred that a corona carries out by [ as contacting a treated surface ]. If it does in this way, Co mouth Na electric discharge processing will be suitably performed to the surface of a large-sized substrate which is non-conducting and thick. Things are made. in this case -- an interval of two electrodes is l*5 mm -- two above-mentioned Electricity very between -- frequency -- 1 5*5 it is 0 k H z -- and voltage -- 5*2 High circumference which is 5 k V It is preferred to carry out the seal of approval of the wave voltage.

Basis which has the surface where the present invention is constituted by a plastic or rubber again Material, It does not have photocatalyst ability substantially with a photocatalyst arranged on a treated surface of the substrate. It is Buddy at antifouling material provided with an antifouling property coat containing amorphous type titanium peroxide. The and the above-mentioned antifouling property coat were formed by an above-mentioned film formation method. Antifouling material is also provided. As a substrate, it is a plastic covering layer (especially acrylic resin) to a tire and the surface. Covering by either fluoro-resins and these mixtures A wheel for vehicles provided with a layer can be used, Inside of car exhaust emission Stain can disassemble poisonous gas, such as nitrogen oxide, and according to smoke in exhaust gas, etc. Antifouling material (a tire, a wheel for vehicles, etc. by which an antifouling property coat is arranged) by which Re is avoided is Offer. It is offered. [Embodiment of the Invention]

Hereinafter, power of explaining the present invention in detail while referring to drawings Explanation of the following [ present invention ] It is not limited to the range.

They are Drawing 1 and a schematic diagram showing a plasma discharge processing unit.

They are Drawing 2 and a schematic diagram showing an ultraviolet exposure processing unit.

They are Drawing 3 and a schematic diagram showing a corona discharge treatment apparatus.

A photocatalyst and amorphous type Peroxytitanium are contained after Drawing 4 (a) and dry processing. The process of forming the antifouling property coat of one layer to carry out is shown, and The 4 figure (b) shows the sectional view of a substrate and a Prevention * coat after forming an antifouling property coat according to the process of The 4 figure (a). It is.

The 1 Paint in which Drawing 5 (a) contains amorphous type titanium peroxide after dry processing The process of forming a film and The 2 coat containing a photocatalyst is shown, and The 5 figure (b) is, Drawing 5 Section of a substrate and an antifouling property coat after forming an antifouling property coat according to the process of (a) The figure is shown.

It is Ah in Drawing 6 (a) and the figure showing the plasma discharge disposal method to the wheel top for vehicles. They are Ri, Drawing 6 (b), and a figure showing the wheel for vehicles after antifouling property coat formation. Drawing 7 It is a figure showing (a) and the corona-discharge-treatment method to the side part of a tire, and Drawing 7' (b) is a figure showing the tire after antifouling property coat formation. The surface constituted by the film formation method, the plastic, or rubber of the present invention It is applied to the substrate which it has. As a substrate, it is a Acryl board tire etc. first. Like and the substrate with which the whole substrate comprises one or more sorts of plastics or rubbers, therefore the surface is also constituted by a plastic or rubber are mentioned. Ho for vehicles, such as a car by which the plastic covering layer is provided in the surface, and a two-wheeled vehicle Like [ the wood and the metallic material with which the plastic or the rubber enveloping layer is provided in Wheel and the surface, glassware, etc. ], and the substrate with which only the neighborhood of the surface comprises a plastic or rubber are mentioned. A part of surface of a substrate is with a plastic or rubber. It may be constituted.

the plastic which constitutes the substrate surface where the film formation method of the present invention is applied -- moreover -- There is no restriction in particular in the kind of rubber. polyethylene, polypropylene, and polystyrene etc. -- general-purpose thermoplastics, A, such as polyamide, Polyase tar, and polycarbonate Thermoplastics for Senior ring plastics, Phenol resin, urea resin, and Mela Thermosetting resin, such as Min resin, Polyisoprene rubber, butadiene rubber, styrene z Butadi General-purpose rubbers, such as En rubber, Heat, such as special rubbers, such as chloroprene rubber, Rico nitril / butadiene rubber, and acrylic rubber, and a styrene system, a Olefin system, and a Urethane system It is Paint of the present invention in all the substrates that have the surface constituted by reversibility elastomer 1. A film formation method is applicable. It may apply to the whole surface style ^ Carried out by the formation method, the plastic, or rubber of the antifouling property coat of the present invention, and is a top. It may apply to a part of account surface. With the film formation method in this embodiment, it is hydrophilicity with high reactivity to the 1st treated surface. Dry processing for introducing a machine is performed. the surface top of a substrate -- acrylic resin etc. making the foundation layer surface into a treated surface, after forming Underlayer -- the above-mentioned dry processing -- a line -- an intermediary -- it is -- . It is Yo if it is the processing which can introduce a hydrophilic group with high reactivity into a treated surface as dry processing. As To and such dry processing, plasma discharge processing, Co mouth Na electric discharge processing, and UV irradiation it shoots and processing, ozonization, and frame processing are mentioned -- especially -- plasma discharge processing and corona electric discharge processing Weaning ultraviolet exposure processing has kept the treated surface pure -- much reactivity -- high -- It is, and since a hydrophilic group can be introduced, it is desirable. The collision to the treated surface by the electron which occurred by plasma discharge processing, corona discharge treatment, and ultraviolet exposure processing, Or the operation of ultraviolet rays (in plasma discharge processing and corona discharge treatment, line outside purple occurs secondarily.) which occur secondarily, such as ozone, In order that hydrophilic groups, such as a carboxyl group with high reactivity, a carbonyl group, and a hydroxyl group, may generate to a treated surface, a treated surface gets wet, and they are a sex and reactivity. It improves. For this reason, when a basin system paint is applied to the treated surface by which dry processing was carried out, the coat pasted up on the treated surface uniformly and firmly is formed. Hereinafter, plasma discharge processing, Co The method of mouth Na electric discharge processing and ultraviolet exposure processing is explained. Drawing 1 and the schematic diagram of the plasma discharge processing unit are shown. plasma discharge Processing device 2 0 -- chamber 1 -- 2 having 1 -- chamber 1 -- 2 Inside of one Substrate 1 Zero treated surfaces 1 Electrode 2 of The 1 currently installed in 0 S by approaching 2, treated surface 10 S -- an opposite -- carrying out -- electrode 2 of The 1 Electrode 2 of The 2 currently installed in the side 2 and opposite to it has 3 -- chamber 1 -- 2 The exterior of 1 two electrodes 2 2 and 2 it is connected among three -- high-pressure A Lance 2 Electricity *1 device 2 provided with 4 It has 5. chamber 1 -- 2 1 -- vacuum Pump 26 and gas Bon What 2 7 is connected -- chamber 1 -- 2 Atmosphere gas in one Intermediary To have [ as ] which can be changed.

chamber 1 -- 2 the inside of one -- treated surface 1 Base 1 which has 0 S Install 0. chamber 1 -- 2 1 -- the 1st electrode 2 after replacing inner atmosphere gas Electrode 2 of 2 and The 2 between 3 -- high Electricity impressing pressure -- two electrodes 2 2 and 2 plasma is generated among three -- activating gas -- place Reason side 1 Plasma discharge processing of the 0 S is carried out uniformly.

The atmosphere gases used in this plasma discharge processing is A r and O.₂C O, C 0₂N₂N O, N 0₂N H₃Air (0)₂+ CO₂+ N₂etc) etc. -- reactivity is high although there will be no restriction in particular if it is gas which can introduce a hydrophilic group into a treated surface -- A r and 0₂And N₂But -- it is desirable. The degree of vacuum in chamber 1 at the time of carrying out plasma treatment is 1. It is the range of 0*0 .1 t o r r, and it is preferred that it is the range of 1*0 .1 t o r r. Processing time is 1*6. The range for 0 minute is preferred. They are Drawing 2 and a figure showing the schematic diagram of an ultraviolet exposure processing unit. ultraviolet exposure processing unit 3 0 -- chamber 1 -- 3 having 1 -- chamber 1 -- 3 the inside of one -- ultraviolet exposure Light source 3 2 -- chamber 1 -- 3 the exterior of 1 -- ultraviolet exposure light source 3 Object for light sources connected to 2 Electricity? -- original -- 3 It has 3. Champa 1 -- 3 1 -- vacuum pump 3 4 and gas Bon Be 3 5 is connected -- chamber 1 -- 3 It is good to replace the atmosphere gas in one. It is Noh and has come.

chamber 1 -- 3 the inside of one -- treated surface 1 Base 1 which has 0 S Install 0. chamber 1 -- 3 Ultraviolet exposure light source 3 after replacing the atmosphere gas in one 2 -- treated surface 1 0 S and predetermined making it move, maintaining distance and irradiating with ultraviolet rays -- treated surface 1 Ultraviolet exposure processing of the 0 S is carried out uniformly.

As atmosphere gas used for ultraviolet exposure processing, air, vapor, and ozone are good Up. It is by carrying out and is .. It is a place by performing ultraviolet exposure processing, after making water adhere to a treated surface. The hydrophilicity-ized efficiency of a Reason side can be raised. Ultraviolet exposure light source 3 Purple emitted from 2 The wavelength of outside line is 1. 5 0*3 6 It is preferred that it is 5 n m. a wavelength -- 3 6 hydrophilicity-ization of the surface of a substrate cannot fully be performed as it is more than 5 n m -- again -- general -- large -- The ultraviolet-rays lamp currently used to 1 5 acquiring the ultraviolet rays of the wavelength below 0 n m -- Trouble It is because it is difficulty. Ultraviolet exposure light source 3 As 2, a low-pressure ultraviolet-rays lamp is preferred. a low-pressure ultraviolet-rays lamp -- 2 5 4 n m and 1 8 two short wavelength lights of 4 .9 n m are emitted -- radiation the energy carried out is very large -- it is suitable for hydrophilicity-ization of the treated surface. between corona discharge treatment, and the electric discharge electrodes and countering electrodes which counter mutually -- a substrate -- Install -- although an idiomatic corona discharge treatment apparatus may be used Like and 2 are shown in Drawing 3 Either of the electrodes is covered qualitatively of an insulator, And both these two electrodes The corona discharge treatment apparatus arranged by approaching on a treated surface is used, two above-mentioned Electricity the corona which occurs by carrying out the seal of approval of the high frequency voltage in between very much contacts a treated surface -- as -- if it carries out and corona discharge treatment is performed -- non-conducting -- and -- it is a thick large-sized substrate Since it is possible to perform a surface treatment, it is desirable.

Corona discharge treatment apparatus 4 of Drawing 3 In 0, it is substrate 1. Zero treated surfaces 1 0 S is approached and it is Establishment. Place is carried out, Treated surface 1 It is coating member 4 of the shape of a roll which can move, rotating 0 S top. 4 Electrode 4 of The 1 constituted with the stainless steel stick which it has 1, Treated surface 1 It is electrode 4 of The 1 to 0 S. It is electrode 4 of The 1 to the same side as 1. The 2nd electrode 4 constituted by the plates of A installed in 1 by approaching, and Made 2, Two electrodes 4 1 and 4 High frequency oscillator 4 connected to 2 3 A and high-pressure transformer 4 High voltage provided with 3 B Generator 4 It has 3. The above-mentioned coating member 4 4 is silicon rubber and natural A go. It is constituted by Beam or ceramic material.

Base 1 in which corona discharge treatment has treated surface 1 O S Electricity of The 1 after installing 0 It is 4 very much. Electrode 4 of 1 and The 2 They are two electrodes 4 by impressing the high frequency voltage of the high voltage among two. 1 and 4 It carries out by generating a corona among two. the 2nd electrode 4 2 and the above -- -ed -- Covered part material 4 it follows on rotation of 4 -- electrode 4 of The 1 while holding 1 and a predetermined distance -- place Reason side 1 It moves in 0 S top. therefore, electrode 4 of The 1 Electrode 4 of 1 and The 2 between 2 -- To generate a To corona -- treated surface 1 it moves along 0 tops -- treated surface 1 0 S -- uniform -- corona discharge treatment It can carry out. Electrode 4 of The 1 at this time Electrode 4 of 1 and The 2 High frequency voltage which it is preferred that it is 1*5 mm as for the interval of 2, and is loaded, Frequency f = l 5*5 It is 0 k H z and is voltage V = 5*2. 5 k V and output P = 1 0*: It is preferred that it is L O O 0 W. Atmosphere gas may use power S which uses the atmosphere, and oxygen. The grade of hydrophilicity-izing of the surface by above-mentioned dry processing and the angle of contact of water are 1. 0*4 0 ° grade It is preferred that it is. the angle of contact of water -- 4 flipping a basin system paint as it is more than 0 ° -- stripes obtaining -- a sake -- a uniform coat -- obtaining -- things -- difficult -- becoming -- again -- the angle of contact of water -- 1 It is below 0 °. It is because the coat formation by a basin system paint becomes difficult. the treated surface top where dry processing was performed [ in / next / the film formation method of the present invention ] -- Light touch Water containing intermediation and the amorphous type titanium peroxide which does not have photocatalyst ability substantially a system -- an antifouling property coat is formed by applying a paint. In one form in the present invention, antifouling property coats are a photocatalyst and an amorphous type. It is a coat containing titanium peroxide of one layer.

Antifouling of one layer in which Drawing 4 (a) contains a photocatalyst and amorphous type Peroxy acid titanium The process of forming a sex coat is shown. It is Including about a photocatalyst and amorphous type titanium peroxide. Basin system paint 1 which it has About 2, they are the Sp . Leh method, a dip method, a flow coating method, and a low. It applies on the treated surface after dry processing was performed by publicly known methods, such as the Le method and brush coating. It carries out. Drawing 4 The sectional view of the substrate after forming a Prevention * coat according to the process of Drawing 4, and an antifouling property coat is shown in (b).

it is content about the amorphous type titanium peroxide used when forming an above-mentioned antifouling property coat as the basin system paint to carry out -- amorphous type titanium peroxide sol -- points, such as coat formation nature , -- it is desirable. This amorphous type titanium peroxide sol is manufactured by a publicly known method. Things are made, for example, it is titanium tetrachloride T i C 1.₄To which titanium salt water solution, it is water, for example. Amorphous type water oxidization which added Hydroxic acid Al power Li, such as acid Y sodium, and was generated Titanium T i (OH)₄it washes -- processing this after dissociating with hydrogen peroxide solution Amorphous type titanium peroxide sol can be obtained. the above-mentioned Animal which is not crystallizing A type titanium peroxide sol to Anatase type titanium oxide at normal temperature Because it excels in adhesion nature -- coat formation nature is high and forms a uniform and smooth thin coat it can do -- the coat after Power and dryness does not melt into water, and also receives a photocatalyst -- being stable -- it is It has the characteristic which obtained and was extremely excellent.

The photocatalyst contained in an above-mentioned antifouling property coat, and Anatase type titanium oxide, Rutile type Titanium oxide, oxidization Salt, tin oxide, 2 acid Mhibismus, titanic acid strontium, barium titanate, sulfuration power Dom, silicon carbide, molybdenum disulfide, etc. are publicly known. Although an inorganic photocatalyst can be used without restriction, Anatase type titanium oxide -- and -- a rutile type titanium dioxide -- good -- better -- Les, Anatase type titanium oxide sol is used especially, and it is Paint. It is preferred to form a film. Anatase type titanium oxide sol liquid and the partner that contacts It is because a very smooth field with hydrophilicity can be formed. Anatase type They are titanium oxide sol and above-mentioned amorphous type titanium peroxide sol 1 0 Warm more than 0 °C It is obtained by heating with a degree. The above-mentioned photocatalyst is marketed.

The paint which mixed amorphous type titanium peroxide with the photocatalyst as mentioned above is used. Amorph end type titanium peroxide achieves the duty of Pinda 1, and it is the circumference of photocatalyst particles. Since it will exist, decomposition of the plastic by a photocatalyst or rubber is prevented. It can carry out. Amor to a photocatalyst -- face -- as for the rate of type titanium peroxide, it is preferred that it is the range of 4 / 1 * 1 A 4. if there are too many photocatalysts -- a plastic or A go that it is difficult to prevent decomposition of Beam completely, and Amor -- face -- type titanium peroxide -- many -- It is because the antifouling property coat which has sufficient photocatalyst ability will not be obtained if it passes. At another form of the present invention, it is amorphous type titanium peroxide after the above-mentioned dry processing. By applying the basin system paint to contain, The 1 coat is formed and it is the 1st coat further. The 2 coat is formed by applying the basin system paint containing a photocatalyst upwards.

Drawing 5 (a), and The 1 coat and photocatalyst containing amorphous type titanium peroxide The process of forming The 2 coat to contain is shown. First, treated surface 1 after dry processing Basin system paint 1 which contains amorphous type titanium peroxide on 0 S 2 a, The spraying method, a dip method, a flow coating method, and the rolling method, Publicly known methods, such as brush coating Basin system paint 1 which contains a photocatalyst after applying and drying if needed 2 b is sprayed. To publicly known methods, such as a method, a dip method, a flow coating method, the rolling method, and brush coating It applies. An antifouling property coat is formed according to the process of Drawing 5 (b) and Drawing 5 (a). The sectional view of the substrate after It was and an antifouling property coat is shown.

Adhesiveness of the 1st coat, this form that forms The 2 coat and an antifouling property coat, and a treated surface It reaches [ to improve ] to prevent degradation by the photocatalyst of a treated surface more. It is suitable to maintain the hydrophilicity of an antifouling property coat.

the amorphous type titanium peroxide contained in The 1 coat in this method, and Above mentioned -- face -- type titanium peroxide sol is preferred -- The 1 coat -- amorphous type titanium peroxide and Amor -- face -- the mixture of type titanium oxide may be contained. Family to Rufus type titanium oxide -- face -- as for the rate of type titanium peroxide, it is preferred that it is more than 1 / 1. It is Plastic when there is too little Amorph end type titanium peroxide. Adhesiveness with The and rubber worsens, and perfect in decomposition of a plastic or rubber It is because it is difficult to prevent. Generally, the thickness of the 1st coat is 0.0. 2*4 .0 mu piiota, desirable -- 0. : !. * 2 .0 -- especially preferably it is 0 .2*0 .5 mu etaiota, and adhesive strength with a treated surface is so large that the thickness of the 1st coat is thin -- it is rich in a wear-proof'I student -- a coat with high transparency is formed.

an above-mentioned inorganic photocatalyst can be used as a photocatalyst in the 2nd coat -- above-mentioned amorphous type titanium peroxide may contain besides the photocatalyst. Light effect to intermediation -- face -- the mass rate of type titanium peroxide is less than /1 -- good -- better -- There. if there are too few photocatalysts, the antifouling property coat which has sufficient photocatalyst ability will obtain -- it has He is The squid et al. the thickness of The 2 coat -- general -- 0.0 2*4 .0 mu piiota -- desirable -- 0.1*2.0, it is 0 .3*1 .0 m especially preferably -- the 2nd coat adhesive strength with The 1 coat is so large that thickness is thin, and it is rich in abrasion resistance -- Paint with high transparency A film is formed. the antifouling property coat formed by the film formation method of the present invention -- further -- surface activity an agent -- and -- Or the hydrophilic agent may contain. As a surface-active agent, it is Nonio. A system surface-active agent (Kao Corp. make "Klin Sour") there are Anon system surface-active agent (La ion incorporated company make "Sun Knoll") etc. -- as a hydrophilic agent -- n -- methyl pylori Silica, such as silica dioxides, such as Don colloidal silica, a Shiroki Sun compound, and water glass base -- the hydrophilic agent containing an oxide is mentioned.

The metal which brings an antibacterial effect like A g, C u, and Z n to the antifouling property coat formed by the film formation method of the present invention can be added, and a platinum group metal like P t, P d, R u, R h, and I r can also be added. a platinum group metal is added the oxidation reduction activity of a photocatalyst can be enhanced by things -- disassembly of dirt, and harmful gas And decomposition of a bad smell can be advanced suitably. According to the film formation method of the present invention, it is [ uniform on the surface of a plastic or rubber, and ] strength. A coat with the hydrophilicity which shows the outstanding photocatalyst operation pasted up on Solid, and good weatherability is formed. To. In the plastic or rubber on the surface of a substrate, deteriorating with a photocatalyst There is nothing. Amor which does not have the acid Y titanium sol and photocatalyst ability as a photocatalyst -- face -- if type titanium peroxide sol is used, it will be smooth and the coat excellent in transparency will be formed To.

After forming the foundation layer of an acrylic resin on an acrylics board below, After performing corona discharge treatment with 'device as shown in The 3 figure on a foundation layer, it is amorphous type peroxidation Chi. The 1 coat which uses tongue sol, and The 2 coat which uses Anatase type acid Y titanium sol When it forms, respectively, The conventional Silicone after performing corona discharge treatment on a foundation layer The coat which uses the basin system paint of a general grade like a A system Paint fluorine system paint is formed. When it carries out, And Ah of the effect of being damp, without performing no dry processing, and raising a sex The coat which uses the basin system paint of a general grade which contains Surfactant is formed. About each of the It was case, it got wet on the foundation layer and checked the sex, the angle of contact, and the dirt degree. A result is shown. [ of a paint ]

<img file="WO02074451A1_D0001.tif" />It is a basin system of a general grade by the dry processing in the film formation method of Table 1 to the present invention. Even if it uses a paint, getting wet -- ' -- I" -- it is related with a student, an angle of contact, and a dirt degree -- basin system containing a surface-active agent Power s in which a result better than the case where a paint is used is obtained amorphous type peroxidation Chita The 1 coat containing Sol, and First 2 coat containing Anatase type titanium oxide -- That getting wet when Each formation is carried out -- both a sex an angle of contact and a dirt degree -- although -- excelling extremely It turns out that it is. The present invention has again the surface constituted by a plastic or rubber. On the treated surface in Substrate, It is [ a photocatalyst and ] a photocatalyst substantially by an above-mentioned film formation method. It is To form about the Prevention * coat containing the amorphous type titanium peroxide which does not have ability. It is related with the antifouling material provided with the Prevention * coat manufactured by To.

As a substrate, it is into an acrylic resin, fluoro-resins, these mixtures, etc. to the surface. Vehicles, such as a car in which the plastic covering layer by which Configuration is carried out is provided, and a two-wheeled vehicle for wheel (an aluminum wheel, a steel wheel, etc.) It is suitable. Hui for vehicles - Le is Removal of the dirt of the wheel for vehicles again that it is very easy to become dirty by adhesion of the dirt by combustion products, such as shaving What smokes, such as a brake pad, and exhaust gas, the oil from a road surface, etc. The past requires time and effort. car by which the antifouling property coat containing the present invention and a photocatalyst is arranged the wheel in two ways has the outstanding hydrophilic function and antifouling function, when having received sunlight -- when not having received sunlight, an antifouling function has the hydrophilic function which was excellent although not had To. case where the 1st coat containing especially amorphous type titanium peroxide is formed To -- the outstanding hydrophilic function and an antifouling function continue for a long period of time, without a hydrophilic operation deteriorating It is maintained.

The tire for cars is also preferred as a substrate. To the increase in the number of recent years and automatic platforms Hydrocarbon and carbon monoxide which follow and are contained in exhaust gas, or nitrogen oxide We are anxious about the influence of the quality of an air pollutant. It is light to the side part of an automobile tire of the present invention. Automobile tire by which the Prevention * coat containing a catalyst is arranged, Light in an antifouling property coat A catalyst reacts to quality of an air pollutant, such as nitrogen oxide in exhaust gas, and it is the above-mentioned quality of an air pollutant. Since it detoxicates, it becomes possible to reduce the quality of an air pollutant in exhaust gas. As a light source used for the light excitation of a photocatalyst, sunlight can be used as it is. That it carries out -- in order to hydrophilicity-ize the substrate surface according to light excitation -- the illumination of excitation light -- 0.0 0 lmwZcm²As mentioned above, it is 0. 00 lmw/cm preferably.²As mentioned above, it is 0. lmw/cm especially preferably.²It is good to carry out above.

[Example]

A: Evaluation A of coat formation Sex and defense * nature -- 1 : Plasma discharge processing Example 1

(1) Creation of a substrate

A substrate is an acrylics * fat paint to the aluminum board of 50 X 100 X 2 mm. (acrylics chestnut Ah and Nippon Paint Co., Ltd. make) It is 60 minutes at 160"C after applying to the thickness of thickness 30 m. It created by performing between baking.

(2) Plasma discharge processing

In plasma discharge processing, it is Line using a plasma discharge processing unit as shown in Drawing 1. Ivy. The acrylic resin surface of the above-mentioned substrate (treated surface) Substrate after degreasing by ethanol It puts in in glass Champa 1 of 10 X 10 X 30 c m, and is Vacuum drawing about the inside of chamber 1. It comes and the bottom is after and 0.₂It is filled up with gas, is referred to as 1 t o r r, and is a seal for . 10 minutes about the voltage of output 100W. Addition was carried out and plasma discharge processing was performed. (3) Measurement of an angle of contact

It is 3 with an angle-of-contact meter. The water angle of contact was measured within 0 minute. a measurement result -- a table -- it is shown in 2. Contact A square shape is angle-of-contact meter C A by harmony interface science incorporated company. -- : The model was used.

(4) The 1 coat (T i 0)₃Formation of layer

the treated surface top after plasma discharge processing -- as The 1 coat -- amorphous type peroxidation Chita spray coating of the Sol liquid (T K1 1 0 solution, the product made by TA O containing titanium peroxide of 0 and 0 .8 5 mass %) is carried out uniformly -- room temperature -- Dry . This was repeated 3 times.

(5) The 2 coat (T i 0)₂/T iO₃Formation of layer

a The 1 coat top -- Amor -- face -- mixed-solution (TAK -- 7 0, aqueous liquid containing titanium oxide and titanium peroxide of 1 .7 0 mass %) of type titanium peroxide and Anatase type titanium oxide titanium oxide: -- titanium peroxide = 7 : spray coating of 3 and the product made by TA O is carried out uniformly -- it dried at room temperature. This was repeated 3 times. Then, 1 6 It is 6 at 0 °C. It prints for 0 minute. It carried out.

(5) Resolvability of dirt

as the index of dirt -- 2 Red Ink diluted with water 0 time (made by pie mouth Tut) The surface it applies and irradiates with UV light -- the color difference -- color difference meter (the product made from the Minono Retane ground: CM 5 0 8 d) It used and evaluated. E before evaluating and becoming dirty. it measures -- after becoming dirty calculating difference Zi E -- I got it. It is shown that it is dirty, so that the value of E is large. Example 2

It is the atmosphere gas in the case of plasma discharge processing 0₂From gas to N₂It is I got it about an experiment like Example 1 except having changed into gas. Example 3

It is the atmosphere gas in the case of plasma discharge processing 0₂It is I got it about an experiment like The and Example 1 except having changed into A r gas from gas. Comparative example 1

It is Example 1 except not having performed plasma treatment, the 1st coat formation, and the 2nd coat formation. It experimented similarly. The result of Example 1*3 and comparative example 1 is shown below. Table 2 :

<img file="WO02074451A1_D0002.tif" />As [ show / in Table 2 ], Place which performed plasma discharge processing with a film formation method of the present invention Since an angle of contact gets wet small in Synthesis and a treated surface where a sex is also high is acquired To coat formation nature It excels., moreover. since a uniform coat pasted up firmly is formed in a treated surface -- A It turns out that the Was done antifouling effect is acquired. plasma discharge processing -- a line trap -- and -- Amor to a Treated surface top -- face -- the coat formation by the basin system paint containing type titanium peroxide -- un--- It was possible.

A -- 2 : Ultraviolet exposure processing Example 4

Instead of [ of Plasma electric discharge processing ] It experimented like Example 1 except having performed This and the following ultraviolet exposure processings.

Ultraviolet exposure processing was performed using the ultraviolet exposure device as shown in The 2 figure. Aku Lil resin surface (treated surface) After degreasing in ethanol, water is made to adhere to a treated surface. S one by a Nen zinnia ring company 1 0 W low-pressure ultraviolet-rays lamp S UV 1 1 0 G S -- three 6 -- business it is -- while maintaining the distance of a treated surface and a low-pressure ultraviolet-rays lamp at 1 .5 c m -- inside of the air During 5 minutes and ultraviolet exposure processing were performed in normal pressure. Example 5

It experimented like Example 4 except not having made water adhere to the treated surface after degreasing the Ataryl resin surface (treated surface) in Ethanol before ultraviolet exposure processing. Comparative example 2

It experimented like Example 4 except not having performed ultraviolet exposure processing, the 1st coat formation, and the 2nd coat formation. Below, the result of Examples 4 and 5 and comparative example 2 is shown collectively. Table 3

<img file="WO02074451A1_D0003.tif" />as [ show / in Table 3 ], Case where ultraviolet exposure processing is performed with a film formation method of the present invention To -- since an angle of contact gets wet small and a treated surface where a sex is also high is acquired coat formation nature -- A It has been. ,. Since a uniform coat pasted up firmly is formed in a treated surface, excel. It turns out that the Antifouling effect is acquired. In particular, it is water to a treated surface before ultraviolet exposure processing. The good result is obtained when it is made to adhere. ultraviolet exposure processing -- line trap Coat formation by the basin system paint containing Amorph end type titanium peroxide to a Ivy treated surface top It was impossible.

B : application on the wheel for vehicles Example 6 (plasma discharge processing)

carrying out spray coating of the acrylic acid resin paint (acrylics clearance 1 and the Nippon Paint company make) on the surface of an aluminum wheel -- 1 4 0 °C -- 2 The 6 figure after printing for 0 minute -- (a) -- To indicate -- plasma discharge processing [ like ] was performed. plasma discharge processing and the above-mentioned aluminum wheel it puts in in glass chambers 1 -- the inside of chamber 1 is filled up with A r gas after vacuum suction it is referred to as Pressure 1 t' o r r -- output 1 0 the voltage of 0 W -- 1 It carried out by applying for 0 minute.

Next, it is amorphous type peroxidation titanium sol liquid as The 1 coat on the treated surface after plasma discharge processing. (T K1 1 0 0 and 0 .8 5 mass.) /₀spray coating of solution and the product made by T A O containing Of titanium peroxide is carried out uniformly -- it dried at room temperature. This was repeated 3 times. They are amorphous type titanium peroxide and Anatase type titanium oxide as the 2nd coat. Mixed-solution (T AK -- 7 0, water solution containing titanium oxide and titanium peroxide of 1 .7 0 mass %) titanium oxide : -- titanium peroxide = 7 : 3 and the product made by T A O -- uniform -- spray coating it carries out -- it dried at room temperature. this was repeated 3 times -- the last -- 1 6 it prints in the oven of 0 °C for 1 hour -- the surface -- photocatalyst activity (namely, hydrophilicity and organic-matter-decomposition nature) The aluminum wheel which it has was created. The wheel provided with the obtained antifouling property coat is shown in The 6 figure (b). Spray coating of the above-mentioned department of Acrylic resin coating is carried out to an aluminum wheel for comparison, and it is 1. 4 It is 2 at 0 °C. Only at having printed for 0 minute, it is Done about plasma discharge processing and coat formation. The wheel which was not was also prepared.

The obtained wheel is attached to a real vehicle and it is 1. 0 0 The dirt after 0 Km run was measured using the color difference meter (Minot Ruta CM -- 5 0 8 d). E before a run. It measures and is after a run. Value It became dirty according to difference 1E, and evaluated the degree. A result is shown below. The value of 1E is large. It comes and it is shown that Les, a degree, and dirt are intense. Table 4<img file="WO02074451A1_D0004.tif" />Although the dirt of reddish brown Preki powder and mud had adhered in the unsettled wheel, most dirt is not accepted with the wheel to which the film formation method of the present invention was given -- Light touch By revelation of the decomposition functional Talk hydrophilic function in intermediation, dirt etc. are adherence to the wheel surface. Not carrying out was checked. Example 7 (corona discharge)

Spray coating of the acrylic acid resin paint (acrylics clearance 1 and the Nippon Paint company make) is carried out on the surface of an aluminum wheel, and it is 1. 4 It is 2 at 0 °C. After printing for 0 minute, corona discharge treatment is performed. It was. Co mouth Na electric discharge processing uses a corona discharge treatment apparatus as shown in The 3 figure, and is frequency f = 4 at the time of line Lech, electrode spacing d= 1 mm, and a high-frequency-voltage seal of approval. 0 k H z and voltage V = 1 It is 1 the bottom of the condition of 4 k V, and in the air. It carried out for 0 minute.

next, the treated surface top after corona discharge treatment -- as The 1 coat -- amorphous type peroxidation spray coating of the titanium sol liquid (T K -- solution, the product made by T A O containing titanium peroxide of 1 0 0 and 0 .8 5 mass %) is carried out uniformly -- it dried at room temperature. This was repeated 3 times. They are amorphous type titanium peroxide and Anatase type titanium oxide as The 2 coat. Mixed-solution (T A K -- the water solution containing titanium oxide and titanium peroxide of 7 0 and 1 .7 0 mass %, and titanium oxide:titanium peroxide)⁷: 3 and the product made by T A O -- uniform -- spray coating it carries out -- it dried at room temperature. this was repeated 3 times -- the last -- 1 6 it prints in the oven of 0 °C for 1 hour -- the surface -- photocatalyst activity (namely, hydrophilicity and organic-matter-decomposition nature) Aluminum which it has Wheel was created. It is the above-mentioned Acryl plastic paint to the surface of an aluminum wheel because of comparison. Spray coating is carried out and it is 1. 4 It is 2 at 0 °C. Only at having printed for 0 minute, they are corona discharge treatment and Paint. The wheel which did not perform film formation was also prepared.

The obtained wheel is attached to a real vehicle and it is 5. 0 0 The dirt after 0 Km run was measured using the color difference meter (Minot Ruta CM -- 5 0 8 d). E before a run. It measures and is after a run. Value It became dirty according to difference 1E, and evaluated the degree. A result is shown below. The value of 1E is large. It comes and it is shown that Les, a degree, and dirt are intense. Table 5 :<img file="WO02074451A1_D0005.tif" />Although the dirt of reddish brown brake powder or mud had adhered in the unsettled wheel, most dirt is not accepted with the wheel to which the film formation method of the present invention was given -- Light touch By revelation of the decomposition function and hydrophilic function in intermediation, dirt etc. are adherence to the wheel surface. Not carrying out was checked. Example 8 (ultraviolet exposure processing)

Spray coating of the Acryl plastic paint (acrylics clearance 1 and the Nippon Paint company make) is carried out on the surface of an aluminum wheel, and it is 1. 4 It is 2 at 0 °C. Ultraviolet exposure processing after printing for 0 minute It gave. Ultraviolet exposure processing uses an ultraviolet exposure processing unit as shown in The 2 figure. It carried out. It is the above-mentioned wheel 1 by a Seng zinnia ring company 1 0 W low-pressure ultraviolet-rays lamp S UV 1 1 0 G S - 3 6 is used, The resin surface and the low-pressure ultraviolet-rays lamp of a wheel It is To go about ultraviolet exposure processing for 5 minutes at the inside of the air, and normal pressure, maintaining distance at 1 .5 c m. It was.

Next, it is amorphous type peroxidation Chi tongue sol liquid as The 1 coat on the treated surface after ultraviolet exposure processing. (T K1 1 0 0 and 0 .8 5 mass)⁰/₀spray coating of solution and the product made by TA O containing Of titanium peroxide is carried out uniformly -- it dried at room temperature. This was repeated 3 times. It is mixed-solution of amorphous type titanium peroxide and Anatase type titanium oxide as the 2nd coat. (T AK -- 7 0, aqueous liquid containing titanium oxide and titanium peroxide of 1 .7 0 mass %) titanium oxide: -- titanium peroxide = 7 : spray coating of 3 and the T AO company make is carried out uniformly -- it dried at room temperature. this was repeated 3 times -- the last -- 1 6 the oven of 0 °C -- 1-hour glow it comes -- the surface -- photocatalyst activity (namely, hydrophilicity and organic-matter-decomposition nature) Aluminum Hoi 1 Le which it has was created. a comparison sake -- the surface of an aluminum wheel -- above-mentioned acrylic resin Paint carrying out spray coating of the charge -- 1 4 0 °C -- 2 having only printed for 0 minute -- ultraviolet exposure processing -- and -- The wheel which did not perform coat formation was also prepared.

It is a color difference meter (Minot Ruta CM -- 508 d) about the dirt after attachment and a 1200 Km run to a real vehicle in the obtained wheel. It used and measured. E before a run. It measures and is after a run. Value It became dirty by difference IE and evaluated the degree. A result is shown below. the value of 1E -- a large -- Like -- * table 6 showing that a degree and dirt are intense :<img file="WO02074451A1_D0006.tif" />Although the dirt of Preki powder and mud of reddish brown [ The / !/and ] had adhered to the unsettled wheel, most dirt is not accepted with the wheel to which the film formation method of the present invention was given -- Light touch By revelation of the decomposition function and hydrophilic function in intermediation, dirt etc. are adherence to the wheel surface. Not carrying out was checked.

C : application into the tire for cars Example 9 (corona discharge treatment)

To the side part of a passenger car tire, it is Drawing 7._aIt is To go about corona discharge treatment as shown. It was. Co mouth Na electric discharge processing was performed for 10 minutes under the condition of electrode spacing d = 1 mm, frequency f = 40 kHz at the time of a high-frequency-voltage seal of approval, and voltage V= 14 k V, and in the air.

next, the treated surface top after corona discharge treatment -- as The 1 coat -- amorphous type peroxidation Chi spray coating of the tongue solution (TK -- solution containing titanium peroxide of 100 and 0. 85 mass % and product made by taualpha omicron) is carried out uniformly -- it dried at room temperature. This was repeated 3 times. furthermore -- as The 2 coat -- Anatase type titanium oxide sol solution -- uniform -- spray coating it carries out -- it dried at room temperature. This was repeated 3 times. Then, it is photocatalyst activity to 1-hour baking and a side part with the oven of 80"C. (namely, hydrophilicity and organic-matter-decomposition nature) Thailand which it has A was created. The tire provided with the obtained antifouling property coat is shown in The 7 figure (b).

It is 1 m about this tire.³Initial concentration 4 p pm after putting in in of chamber 1, 8 p pra 1 2 p p m nitrogen oxide gas was enclosed. It is a black light to the above-mentioned tire. (8 W and 1 3 mW/ c m)²it uses as a light source and irradiates with ultraviolet rays -- it is the above in 1 hour and 2 hours concentration change of the nitrogen oxide in chamber 1 -- U type gas detecting tube (Kitagawa style nitrogen oxide detection pipe) It used and measured. Example 1 0 (corona discharge treatment)

Except having changed formation of the antifouling property coat after corona discharge treatment, it is Repeat about the procedure of Example 9. Returned. formation of an antifouling property coat -- it carried out as follows.

To the treated surface after corona discharge treatment, it is amorphous type titanium peroxide as the 1st coat. Spray coating of the sol liquid (T K -- solution, the product made from T A O containing Peroxy acid titanium of 1 0 0 and 0 .8 5 mass %) was carried out uniformly, and it dried at room temperature. This was repeated 3 times. furthermore -- as The 2 coat -- Amor -- face -- the mixed-solution (T AK -- 7 0, solution containing titanium oxide and titanium peroxide of 1 .7 0 mass %) of type titanium peroxide and Anatase type titanium oxide titanium oxide: -- titanium peroxide = 7 : spray coating of 3 and the product made by T AO is carried out uniformly -- room temperature It dried. It is 8 to the last which repeated this 3 times. It prints in the oven of 0 °C for 1 hour. It was. Example 1 1(plasma discharge processing)'

It is Example 1 about plasma discharge processing except I got it instead of Co mouth Na electric discharge processing. Zero hands Order was repeated. Plasma discharge Processing equipment as shows plasma discharge processing in Drawing 1 It carried out using Place. the above-mentioned tire is put in in glass chambers 1 -- inside of chamber 1 it being filled up with A r gas and referred to as pressure 1 t 0 r r, after carrying out vacuum suction -- output 1 0 Voltage of 0 W 1 The seal of approval was carried out for 0 minute, and plasma discharge processing was performed. Example 1 2 (ultraviolet exposure processing)

Except having performed ultraviolet exposure processing instead of plasma discharge processing, it is Example 1. Zero hands Order was repeated. Ultraviolet exposure processing is Use about an ultraviolet exposure processing unit as shown in The 2 figure. It carried out by carrying out for. one by a Senzen Your ring company 1 0 W low-pressure ultraviolet-rays lamp S UV 1 1 0 0 3--3 the distance of the tire surface and a low-pressure ultraviolet-rays lamp is maintained at 1 .5 c m using 6 -- it carried out by carrying out an ultraviolet exposure for 5 minutes in the inside of the air, and normal pressure. Comparative example 3

The procedure of Example 9 was repeated except not having given dry processing Talk coat formation.₍Below, it is Example 9*1. The result of 1 and comparative example 3 is shown. Table 7 :

<img file="WO02074451A1_D0007.tif" />It is a book although concentration change of nitrogen oxide was not seen with a tire more nearly unsettled than Table 7. At the tire which formed the coat of the photocatalyst with the film formation method of the invention, it is the concentration of nitrogen oxide. It decreased and it was checked that the nitrogen oxide concentration in the exhaust gas of a car can be reduced.

[Effect of the Invention]

According to the formation method of the antifouling property coat of the present invention, it is the plastic or the rubber surface of a substrate. After performing dry processing which introduces a hydrophilic group with high reactivity upwards, It is [ a photocatalyst and ] light substantially. It is a form about the antifouling property coat containing amorphous type Peroxytitanium which does not have catalyst ability. In order to carry out Formation, the uniform antifouling property coat pasted up firmly is formed in a treated surface -- hydrophilicity -- -proof -- The coat excellent in Weatherproofness etc. not only being formed but seal nature, membrane formation nature, and transparency The outstanding coat is formed. To. , -- tic [ brass ] or rubber on the surface of a substrate -- photocatalyst It does not decompose.

Antifouling material provided with the antifouling property coat of the present invention, the treated surface was pasted firmly -- uniform are . It was provided with the Prevention * coat containing a photocatalyst and amorphous type Peroxytitanium metal -- using the antifouling material of the present invention, It is a profit about the decomposition function of a photocatalyst, and a hydrophilic function. for is carried out, it continues for a long period of time, and they are being stable, formation of air *, deodorization, clean water, antibacterial properties, and a Self hook lien. A can be performed.