JPH11114429A - Surface treatment agent for forming photocatalyst coating film and method for forming photocatalyst coating film using surface treatment agent - Google Patents
Surface treatment agent for forming photocatalyst coating film and method for forming photocatalyst coating film using surface treatment agentInfo
- Publication number
- JPH11114429A JPH11114429A JP9281536A JP28153697A JPH11114429A JP H11114429 A JPH11114429 A JP H11114429A JP 9281536 A JP9281536 A JP 9281536A JP 28153697 A JP28153697 A JP 28153697A JP H11114429 A JPH11114429 A JP H11114429A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- surfactant
- treatment agent
- colloidal silica
- forming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012756 surface treatment agent Substances 0.000 title claims abstract description 23
- 239000011248 coating agent Substances 0.000 title claims abstract description 22
- 238000000576 coating method Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 5
- 239000011941 photocatalyst Substances 0.000 title abstract description 37
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000008119 colloidal silica Substances 0.000 claims abstract description 25
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 239000002736 nonionic surfactant Substances 0.000 claims abstract description 19
- 239000003945 anionic surfactant Substances 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 150000001768 cations Chemical class 0.000 claims abstract description 4
- 239000006185 dispersion Substances 0.000 claims abstract description 3
- 230000001699 photocatalysis Effects 0.000 claims description 18
- 239000004094 surface-active agent Substances 0.000 claims description 14
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 239000003093 cationic surfactant Substances 0.000 claims description 3
- 125000001033 ether group Chemical group 0.000 claims 1
- 230000008021 deposition Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 39
- -1 alkylphenyl ether Chemical compound 0.000 description 25
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 13
- 229910052731 fluorine Inorganic materials 0.000 description 13
- 239000011737 fluorine Substances 0.000 description 13
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 11
- 239000005357 flat glass Substances 0.000 description 10
- 239000011734 sodium Substances 0.000 description 9
- 238000001035 drying Methods 0.000 description 8
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- GSGDTSDELPUTKU-UHFFFAOYSA-N nonoxybenzene Chemical compound CCCCCCCCCOC1=CC=CC=C1 GSGDTSDELPUTKU-UHFFFAOYSA-N 0.000 description 6
- 125000002947 alkylene group Chemical group 0.000 description 5
- 239000011259 mixed solution Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Chemical compound CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- CMCBDXRRFKYBDG-UHFFFAOYSA-N 1-dodecoxydodecane Chemical compound CCCCCCCCCCCCOCCCCCCCCCCCC CMCBDXRRFKYBDG-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 125000003709 fluoroalkyl group Chemical group 0.000 description 3
- 230000001443 photoexcitation Effects 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 102220559234 Voltage-dependent L-type calcium channel subunit alpha-1C_S30H_mutation Human genes 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 125000005907 alkyl ester group Chemical group 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 150000003014 phosphoric acid esters Chemical class 0.000 description 2
- 229920001515 polyalkylene glycol Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- OSIVISXRDMXJQR-UHFFFAOYSA-M potassium;2-[ethyl(1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluorooctylsulfonyl)amino]acetate Chemical compound [K+].[O-]C(=O)CN(CC)S(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F OSIVISXRDMXJQR-UHFFFAOYSA-M 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- JINPVJZSNBUSCO-UHFFFAOYSA-N acetic acid;2-[dodecyl(2-hydroxyethyl)amino]ethanol Chemical compound CC(O)=O.CCCCCCCCCCCCN(CCO)CCO JINPVJZSNBUSCO-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000005037 alkyl phenyl group Chemical group 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(III) oxide Inorganic materials O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 description 1
- 150000001734 carboxylic acid salts Chemical class 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004590 silicone sealant Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Silicon Compounds (AREA)
- Catalysts (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は既存の窓ガラス、窓
枠、外壁のように、既に表面に汚染物質が付着している
部材の表面に光触媒性親水性被膜を形成するための表面
処理剤と、この表面処理剤を用いた光触媒被膜の形成方
法に関する。The present invention relates to a surface treating agent for forming a photocatalytic hydrophilic coating on the surface of a member having a contaminant already attached to the surface, such as an existing window glass, window frame, or outer wall. And a method for forming a photocatalytic film using the surface treating agent.
【０００２】[0002]
【従来の技術】本発明者らは、ＰＣＴ／ＷＯ９６／２９
３７５号に開示したように、基材表面に光触媒層を形成
すると、光触媒の光励起に応じて前記層表面が、水との
接触角に換算して１０°以下という高度の親水性を呈す
ることを見出し、さらにそれによりガラス、レンズ、鏡
等の透明部材の防曇・視界確保性向上、物品表面の水洗
浄性・降雨洗浄性向上などの効果が得られることを見出
した。2. Description of the Related Art The present inventors have proposed PCT / WO96 / 29.
As disclosed in Japanese Patent No. 375, when a photocatalyst layer is formed on a substrate surface, the layer surface exhibits a high degree of hydrophilicity of 10 ° or less in terms of a contact angle with water in response to photoexcitation of the photocatalyst. Further, it has been found that effects such as improvement of anti-fog and improvement of visibility of transparent members such as glass, lens and mirror, and improvement of water washing property and rain washing property of an article surface can be obtained.
【０００３】また、光触媒層に紫外線を照射すると、価
電子帯にあった電子（ｅ-）が伝導帯に励起され、価電
子帯には正孔（ｈ+）が生じ、これら電子（ｅ-）及び正
孔（ｈ+）が酸化還元反応を促進することで、汚れ成分
を分解する作用があることは従来から知られている。When the photocatalyst layer is irradiated with ultraviolet light, electrons (e − ) in the valence band are excited to the conduction band, and holes (h + ) are generated in the valence band, and these electrons (e − ) are generated. ) And holes (h + ) have been known to promote the oxidation-reduction reaction, thereby decomposing dirt components.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、既存の
部材表面に光触媒層を形成しようとすると、既存の部材
表面には既に汚染物質が付着している場合が多く、その
汚染物質の影響で親水性を発揮する光触媒含有層を形成
するためのコーティング剤が弾かれたり、うまく固着し
なかったりして光触媒含有層の光励起による表面の親水
化機能や汚れ成分の分解機能が損なわれることがある。However, when an attempt is made to form a photocatalyst layer on the surface of an existing member, in many cases, a contaminant has already adhered to the surface of the existing member. In some cases, the coating agent for forming the photocatalyst-containing layer exhibiting the above-mentioned properties is repelled or does not adhere well, thereby impairing the function of hydrophilizing the surface by photoexcitation of the photocatalyst-containing layer and the function of decomposing dirt components.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記事情に鑑
みてなされたものであり、既存の部材の表面に、光触媒
含有層を形成する前に、予め既存の部材の表面に塗布さ
れ、既存の部材の表面を親水化して、最外側となる光触
媒層の部材表面への結合強度を向上させる表面処理剤を
提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is applied to the surface of an existing member in advance before forming a photocatalyst-containing layer on the surface of the existing member. It is an object of the present invention to provide a surface treatment agent that hydrophilizes the surface of an existing member and improves the bonding strength of the outermost photocatalytic layer to the member surface.
【０００６】上記課題を解決すべく本発明に係る光触媒
被膜形成用表面処理剤は、１価の陽イオンで安定化され
たコロイダルシリカと、非イオン性界面活性剤及び／又
はアニオン性界面活性剤から構成される。In order to solve the above problems, a surface treating agent for forming a photocatalytic film according to the present invention comprises a monovalent cation-stabilized colloidal silica, a nonionic surfactant and / or an anionic surfactant. Consists of
【０００７】コロイダルシリカと界面活性剤の合計量に
対するコロイダルシリカの割合については、塗布面のベ
トつきを回避すべく４０重量％以上とすることが好まし
い。また、コロイダルシリカと界面活性剤の割合として
は、コロイダルシリカを７５〜９０重量％、界面活性剤
を２５〜１０重量％にするのが適当であり、更に、これ
らコロイダルシリカ及び界面活性剤の水性液中での濃度
は０．１〜５０重量％とするのが均一な塗布膜を形成す
る上で好ましい。The ratio of the colloidal silica to the total amount of the colloidal silica and the surfactant is preferably at least 40% by weight in order to avoid stickiness of the coated surface. The ratio of the colloidal silica to the surfactant is suitably from 75 to 90% by weight of the colloidal silica and from 25 to 10% by weight of the surfactant. The concentration in the solution is preferably 0.1 to 50% by weight in order to form a uniform coating film.
【０００８】また、界面活性剤としてエーテル型非イオ
ン性界面活性剤を用いる場合には、ＨＬＢ（親水性親油
性化指数：Hydrophile-Lipophile-Balance）が５〜１５
の界面活性剤が好ましい。When an ether type nonionic surfactant is used as the surfactant, the HLB (Hydrophilic-Lipophile-Balance) is 5 to 15.
Surfactants are preferred.
【０００９】光触媒被膜の形成方法としては、図１に示
すように、既存の部材の表面を洗浄した後、当該表面に
上記構成の表面処理剤を塗布する。すると、既存の部材
の表面にはシリカ粒子が沈着して親水化せしめられる。
そこで、この親水化された表面に光触媒コーティング液
を塗布し乾燥せしめることで、部材表面に対する結合力
に優れた光触媒層が得られる。As a method for forming a photocatalytic film, as shown in FIG. 1, after cleaning the surface of an existing member, the surface treatment agent having the above-described structure is applied to the surface. Then, the silica particles are deposited on the surface of the existing member and are made hydrophilic.
Therefore, a photocatalyst coating liquid is applied to the surface that has been hydrophilized and dried to obtain a photocatalyst layer having excellent bonding strength to the member surface.
【００１０】因みに、特公昭６３−４５４３２号公報に
は、合成樹脂成形物やガラス等の表面の防曇剤として、
１価の陽イオンで安定化されたコロイダルシリカと、非
イオン性界面活性剤及び／又はアニオン性界面活性剤と
を含有する安定な水性分散液が提案されているが、光触
媒層を形成するための前処理剤としては何ら示唆されて
いない。[0010] Incidentally, Japanese Patent Publication No. 63-45432 discloses an antifogging agent for the surface of a synthetic resin molded product, glass or the like.
A stable aqueous dispersion containing colloidal silica stabilized with a monovalent cation and a nonionic surfactant and / or an anionic surfactant has been proposed. No pretreatment agent is suggested.
【００１１】本発明の表面処理剤を構成するコロイダル
シリカとしては、粒子径が１００μｍ以下、好ましくは
１０μｍ程度のもので、ナトリウムやアンモニウム等の
１価の陽イオンで安定化したものであり、例えば、スノ
ーテックス（日産化学製）、ルドックス（デュポン社
製）、カタロイド（触媒化成製）が挙げられる。The colloidal silica constituting the surface treatment agent of the present invention has a particle diameter of 100 μm or less, preferably about 10 μm, and is stabilized with a monovalent cation such as sodium or ammonium. , Snowtex (manufactured by Nissan Chemical), Ludox (manufactured by DuPont), and cataloid (manufactured by Catalysis Kasei).
【００１２】また、非イオン性界面活性剤としては、以
下に挙げるものを用いることができる。 （エーテル型）ポリオキシアルキレンアルキルフェニル
エーテル、ポリオキシアルキレンアルキルエーテルが挙
げられ、アルキルフェニル基またはアルキル基は炭素数
８〜２２のものが好ましい。また更されるアルキレンオ
キサイドは炭素数２〜４のもの、またその付加モル数は
２〜３０が好ましい。アルキレンオキサイドの付加は、
１種類の単独付加であってもよく、更に混合付加の場合
には、付加形態がブロック付加でもランダム付加でもよ
い。 （エステル型）ポリオキシアルキレンアルキルエステ
ル、ポリアルキレングリコールアルキルエステル、及び
ポリオキシアルキレン多価アルコールエステル挙げら
れ、この場合の付加モル数等は前記エーテル型と同様で
ある。また、アルキレングリコールは炭素数２〜４のも
ので、それぞれ１種類単独でも２種以上の混合でもよ
く、更に混合の場合には、ブロックでもランダムでもよ
い。また、多価アルコールとしては、グリセリン、ソル
ビトール、ペンタエリスリトール及びトリメチロールプ
ロパン等がある。 （ポリアルキレングリコール）前記エーテル型の非イオ
ン性界面活性剤の項で述べたアルキレンオキサイドの付
加重合物で、その付加モル数は２〜５００である。 （フッ素系非イオン性界面活性剤）フロロアルキル基含
有アルキレンオキサイド付加物、例えば、パーフロロア
ルキルエチレンオキサイド付加物等が挙げられる。フッ
素系非イオン性界面活性剤は、純分０．０１％水溶液で
の表面張力が６０ダイン／ｃｍ以下のもの、特に３０ダ
イン／ｃｍ以下のものが好ましい。表面張力が大きすぎ
るものは被塗布物表面の濡れ性を低下させるので好まし
くない。フッ素系非イオン性界面活性剤としては、ＨＬ
Ｂ値が５〜１５のものが望ましい。具体的には、ポリオ
キシエチレン（５モル）ノニルフェニルエーテル、ポリ
オキシエチレン（１０モル）ノニルフェニルエーテル、
ポリオキシエチレン（４モル）ラウリルエーテル、ポリ
オキシエチレン（１０モル）ラウリルエーテル、ポリオ
キシエチレン（４モル）ラウリルアミン等が挙げられ
る。 （シリコン系非イオン性界面活性剤）オルガノポリシロ
キサンを含む界面活性剤、例えばオルガノポリシロキサ
ンのアルキレンオキサイド付加物等が使用できる。The following nonionic surfactants can be used. (Ether type) polyoxyalkylene alkylphenyl ether and polyoxyalkylene alkyl ether are exemplified, and the alkylphenyl group or the alkyl group preferably has 8 to 22 carbon atoms. The alkylene oxide further has 2 to 4 carbon atoms, and the number of moles added is preferably 2 to 30. The addition of the alkylene oxide is
One type of single addition may be used, and in the case of mixed addition, the addition form may be block addition or random addition. (Ester type) Polyoxyalkylene alkyl ester, polyalkylene glycol alkyl ester, and polyoxyalkylene polyhydric alcohol ester are exemplified, and the number of moles added in this case is the same as that of the ether type. The alkylene glycol has 2 to 4 carbon atoms, and each may be a single type or a mixture of two or more types. In the case of a mixture, the alkylene glycol may be block or random. Examples of the polyhydric alcohol include glycerin, sorbitol, pentaerythritol and trimethylolpropane. (Polyalkylene glycol) An alkylene oxide addition polymer described in the section of the ether type nonionic surfactant, and the number of moles of the addition polymer is 2 to 500. (Fluorine nonionic surfactant) Fluoroalkyl group-containing alkylene oxide adducts, such as perfluoroalkyl ethylene oxide adducts. The fluorine-based nonionic surfactant preferably has a surface tension of 60 dynes / cm or less, particularly preferably 30 dynes / cm or less in a 0.01% aqueous solution of a pure component. If the surface tension is too high, the wettability of the surface of the object to be coated is reduced, so that it is not preferable. HL non-ionic surfactants include HL
Those having a B value of 5 to 15 are desirable. Specifically, polyoxyethylene (5 mol) nonyl phenyl ether, polyoxyethylene (10 mol) nonyl phenyl ether,
Examples thereof include polyoxyethylene (4 mol) lauryl ether, polyoxyethylene (10 mol) lauryl ether, and polyoxyethylene (4 mol) laurylamine. (Silicon Nonionic Surfactant) A surfactant containing an organopolysiloxane, for example, an alkylene oxide adduct of an organopolysiloxane can be used.
【００１３】また、アニオン性界面活性剤としては、以
下に挙げるものを用いることができる。 （硝酸エステル型界面活性剤）各種高級アルコール硝酸
エステル、各種の液体脂肪酸の硝酸エステルが挙げられ
る。 （スルホン酸塩型界面活性剤）各種のアルキルアリルス
ルホン酸塩、各種の脂肪族アマイドの硫酸塩等が挙げら
れる。 （リン酸エステル型界面活性剤）各種の脂肪族アルコー
ルのリン酸エステルが挙げられる。 （フッ素系アニオン性界面活性剤）フロロアルキル基含
有カルボン酸、同カルボン酸塩、フロロアルキル基含有
リン酸エステル等がある。例えば、パーフロロアルキル
カルボン酸、パーフロロアルキルカルボン酸塩及びパー
フロロアルキルリン酸エステルが挙げられる。フッ素系
アニオン性界面活性剤もフッ素系非イオン性界面活性剤
と同様に、純分０．０１％水溶液での表面張力が６０ダ
イン／ｃｍ以下のもの、特に３０ダイン／ｃｍ以下のも
のが好ましい。 （シリコン系アニオン性界面活性剤）オルガノポリシロ
キサン含有カルボン酸及びその塩が挙げられる。As the anionic surfactant, the following ones can be used. (Nitrate ester type surfactant) Examples include nitrates of various higher alcohols and nitrates of various liquid fatty acids. (Sulfonate type surfactant) Various alkyl allyl sulfonates, various aliphatic amide sulfates and the like can be mentioned. (Phosphate ester type surfactant) Phosphate esters of various aliphatic alcohols may be mentioned. (Fluorine-based anionic surfactant) Examples include fluoroalkyl group-containing carboxylic acids, carboxylic acid salts thereof, and fluoroalkyl group-containing phosphate esters. For example, perfluoroalkyl carboxylic acid, perfluoroalkyl carboxylate, and perfluoroalkyl phosphate are mentioned. Like the fluorine-based nonionic surfactant, the fluorine-based anionic surfactant also preferably has a surface tension of 60 dyne / cm or less, particularly preferably 30 dyne / cm or less in a 0.01% pure aqueous solution. . (Silicon-based anionic surfactant) Organopolysiloxane-containing carboxylic acids and salts thereof.
【００１４】一方、光触媒コーティング液を構成する光
触媒粒子としては、アナターゼ型酸化チタン、ルチル型
酸化チタン、酸化亜鉛、酸化錫、酸化第二鉄、三酸化二
ビスマス、三酸化タングステン、チタン酸ストロンチウ
ム等が挙げられる。On the other hand, the photocatalyst particles constituting the photocatalyst coating liquid include anatase type titanium oxide, rutile type titanium oxide, zinc oxide, tin oxide, ferric oxide, bismuth trioxide, tungsten trioxide, strontium titanate and the like. Is mentioned.
【００１５】[0015]
（実施例１）Ｎaで安定化せしめたコロイダルシリカ
（デュポン社製：ルドックスＡＭ）を８６重量部、フッ
素系非イオン性界面活性剤（住友スリーエム社製：ＦＣ
−１７６）を８重量部、フッ素系アニオン性界面活性剤
（住友スリーエム社製：ＦＣ−１２８）を８重量部混合
し、更にこの混合液を３０重量％となるように水に混合
して表面処理剤を調製した。この表面処理剤を既に使用
されている窓ガラスにスポンジ拭きにより塗布した後、
石原産業製光触媒コーティング液ＳＴＫ０１（酸化チタ
ン粒子８重量部とアルキルシリケート２重量部と硝酸水
溶液５４．８重量部とメタノール２８重量部とプロパノ
ール７．２重量部からなる組成物）を溶媒（２−プロパ
ノール９重量部とジアセトンアルコール１重量部との混
合液）で１００倍に希釈して得た光触媒コーティング液
を、直径８ｍｍのエアガンを用いて１０５ｍ2／ｇスプ
レーコーティング法により塗布後、２０℃で２０分乾燥
させることにより、光触媒層を硬化させて試料を得た。
上記試料について、光触媒層形成後、３時間太陽光に晒
すことにより、紫外線が照射されるようにした後、水を
噴霧したところ、水滴が形成されず、水が一様に広がる
様子が観察された。(Example 1) 86 parts by weight of colloidal silica stabilized by Na (Ludox AM manufactured by DuPont) and a fluorine-based nonionic surfactant (FC manufactured by Sumitomo 3M Limited: FC)
-176) and 8 parts by weight of a fluorinated anionic surfactant (manufactured by Sumitomo 3M Ltd .: FC-128), and further mixed with 30% by weight of this mixed solution in water to form a surface. A treating agent was prepared. After applying this surface treatment agent to the window glass already used by wiping with a sponge,
Ishihara Sangyo Co., Ltd. photocatalyst coating solution STK01 (composition comprising 8 parts by weight of titanium oxide particles, 2 parts by weight of alkyl silicate, 54.8 parts by weight of nitric acid aqueous solution, 28 parts by weight of methanol and 7.2 parts by weight of propanol) in a solvent (2- A photocatalyst coating solution obtained by diluting 100 times with 9 parts by weight of propanol and 1 part by weight of diacetone alcohol) was applied by a spray coating method of 105 m 2 / g using an air gun having a diameter of 8 mm, and then applied at 20 ° C. By drying for 20 minutes at, the photocatalyst layer was cured to obtain a sample.
After the photocatalyst layer was formed, the sample was exposed to sunlight for 3 hours after being irradiated with ultraviolet light, and then sprayed with water. As a result, it was observed that no water droplets were formed and the water spread evenly. Was.
【００１６】（実施例２）Ｎaで安定化せしめたコロイ
ダルシリカ（デュポン社製：ルドックスＳＭ−３０）を
８６重量部、フッ素系非イオン性界面活性剤としてポリ
オキシエチレン（１０モル）ノニルフェニルエーテル
（ＨＬＢ：１３．３）を８重量部、フッ素系アニオン性
界面活性剤（旭硝子社製：サーフロンＳ−１１１）を８
重量部混合し、更にこの混合液を３０重量％となるよう
に水に混合して表面処理剤を調製した。この表面処理剤
を既に使用されている窓ガラスに塗布した後、前記実施
例１と同様に光触媒コーティング液を塗布・乾燥させる
ことにより、光触媒層を硬化させて試料を得た。上記試
料について、前記実施例１と同様に、３時間太陽光に晒
すことにより、紫外線が照射されるようにした後、水を
噴霧したところ、水滴が形成されず、水が一様に広がる
様子が観察された。Example 2 86 parts by weight of colloidal silica stabilized by Na (manufactured by DuPont: Ludox SM-30), and polyoxyethylene (10 mol) nonylphenyl ether as a fluorine-based nonionic surfactant (HLB: 13.3) in an amount of 8 parts by weight, and a fluorine-based anionic surfactant (Surflon S-111 manufactured by Asahi Glass Co., Ltd.) in an amount of 8 parts by weight.
Parts by weight, and this mixed solution was further mixed with water so as to be 30% by weight to prepare a surface treating agent. After applying this surface treatment agent to the window glass already used, the photocatalyst layer was hardened by applying and drying the photocatalyst coating liquid in the same manner as in Example 1 to obtain a sample. The above sample was exposed to sunlight for 3 hours to be irradiated with ultraviolet light, and then sprayed with water, as in the case of Example 1. When the water was sprayed, water droplets were not formed and the water spread uniformly. Was observed.
【００１７】（実施例３）Ｎaで安定化せしめたコロイ
ダルシリカ（触媒化成社製：カタロイドＳ３０Ｈ）を７
０重量部、フッ素系非イオン性界面活性剤としてポリオ
キシエチレン（５モル）ラウリルエーテル（ＨＬＢ：１
０．８）を３０重量部混合し、更にこの混合液を１０重
量％となるように水に混合して表面処理剤を調製した。
この表面処理剤を既に使用されている窓ガラスに塗布し
た後、前記実施例１と同様に光触媒コーティング液を塗
布・乾燥させることにより、光触媒層を硬化させて試料
を得た。上記試料について、前記実施例１と同様に、３
時間太陽光に晒すことにより、紫外線が照射されるよう
にした後、水を噴霧したところ、水滴が形成されず、水
が一様に広がる様子が観察された。(Example 3) Colloidal silica stabilized by Na (catalyst S30H, manufactured by Kasei Kasei Co., Ltd.) was mixed with 7
0 parts by weight, polyoxyethylene (5 mol) lauryl ether (HLB: 1) as a fluorine-based nonionic surfactant
0.8) was mixed in 30 parts by weight, and this mixed solution was further mixed with water so as to be 10% by weight to prepare a surface treating agent.
After applying this surface treatment agent to the window glass already used, the photocatalyst layer was hardened by applying and drying the photocatalyst coating liquid in the same manner as in Example 1 to obtain a sample. About the said sample, similarly to the said Example 1, 3
After being irradiated with ultraviolet rays by exposing to sunlight for a time, when water was sprayed, it was observed that no water droplets were formed and the water spread evenly.
【００１８】（実施例４）Ｎaで安定化せしめたコロイ
ダルシリカ（デュポン社製：ルドックスＡＭ）を８６重
量部、フッ素系非イオン性界面活性剤（住友スリーエム
社製：ＦＣ−１７６）を８重量部、ポリオキシエチレン
（５モル）ラウリルアミンを８重量部混合し、更にこの
混合液を４０重量％となるように水に混合して表面処理
剤を調製した。この表面処理剤を既に使用されている窓
ガラスに塗布した後、前記実施例１と同様に光触媒コー
ティング液を塗布・乾燥させることにより、光触媒層を
硬化させて試料を得た。上記試料について、前記実施例
１と同様に、３時間太陽光に晒すことにより、紫外線が
照射されるようにした後、水を噴霧したところ、水滴が
形成されず、水が一様に広がる様子が観察された。(Example 4) 86 parts by weight of colloidal silica stabilized by Na (Ludox AM manufactured by DuPont) and 8 parts by weight of a fluorine-based nonionic surfactant (FC-176 manufactured by Sumitomo 3M). And 8 parts by weight of polyoxyethylene (5 mol) laurylamine, and further, this mixture was mixed with water so as to be 40% by weight to prepare a surface treating agent. After applying this surface treatment agent to the window glass already used, the photocatalyst layer was hardened by applying and drying the photocatalyst coating liquid in the same manner as in Example 1 to obtain a sample. The above sample was exposed to sunlight for 3 hours to be irradiated with ultraviolet light, and then sprayed with water, as in the case of Example 1. When the water was sprayed, water droplets were not formed and the water spread uniformly. Was observed.
【００１９】（実施例５）Ｎaで安定化せしめたコロイ
ダルシリカ（デュポン社製：ルドックスＡＭ）を８６重
量部、ポリオキシエチレン（１０モル）ノニルフェニル
エーテル（ＨＬＢ：１３．３）を８重量部、フッ素系ア
ニオン性界面活性剤（住友スリーエム社製：ＦＣ−１２
８）を８重量部混合し、更にこの混合液を５０重量％と
なるように水に混合して表面処理剤を調製した。この表
面処理剤を既に使用されている窓ガラスに塗布した後、
前記実施例１と同様に光触媒コーティング液を塗布・乾
燥させることにより、光触媒層を硬化させて試料を得
た。上記試料について、前記実施例１と同様に、３時間
太陽光に晒すことにより、紫外線が照射されるようにし
た後、水を噴霧したところ、水滴が形成されず、水が一
様に広がる様子が観察された。(Example 5) 86 parts by weight of colloidal silica stabilized by Na (Ludox AM manufactured by DuPont) and 8 parts by weight of polyoxyethylene (10 mol) nonylphenyl ether (HLB: 13.3) , A fluorine-based anionic surfactant (manufactured by Sumitomo 3M Limited: FC-12)
8) was mixed in 8 parts by weight, and this mixed solution was further mixed with water so as to be 50% by weight to prepare a surface treating agent. After applying this surface treatment agent to the already used window glass,
A photocatalyst layer was cured by applying and drying a photocatalyst coating liquid in the same manner as in Example 1 to obtain a sample. The above sample was exposed to sunlight for 3 hours to be irradiated with ultraviolet light, and then sprayed with water, as in the case of Example 1. When the water was sprayed, water droplets were not formed and the water spread uniformly. Was observed.
【００２０】（実施例６）Ｎaで安定化せしめたコロイ
ダルシリカ（デュポン社製：ルドックスＡＭ）を８６重
量部、ポリオキシエチレン（１０モル）ノニルフェニル
エーテル（ＨＬＢ：１３．３）を８重量部、フッ素系ア
ニオン性界面活性剤（東北肥料社製：エフトップＥＦ１
１２）を８重量部混合し、更にこの混合液を３０重量％
となるように水に混合して表面処理剤を調製した。この
表面処理剤を既に使用されている窓ガラスに塗布した
後、前記実施例１と同様に光触媒コーティング液を塗布
・乾燥させることにより、光触媒層を硬化させて試料を
得た。上記試料について、前記実施例１と同様に、３時
間太陽光に晒すことにより、紫外線が照射されるように
した後、水を噴霧したところ、水滴が形成されず、水が
一様に広がる様子が観察された。Example 6 86 parts by weight of colloidal silica stabilized by Na (Ludox AM manufactured by DuPont) and 8 parts by weight of polyoxyethylene (10 mol) nonylphenyl ether (HLB: 13.3) , A fluorine-based anionic surfactant (manufactured by Tohoku Fertilizer: F-Top EF1)
12) was mixed in an amount of 8 parts by weight, and the mixed solution was further mixed at 30% by weight.
Was mixed with water to prepare a surface treating agent. After applying this surface treatment agent to the window glass already used, the photocatalyst layer was hardened by applying and drying the photocatalyst coating liquid in the same manner as in Example 1 to obtain a sample. The above sample was exposed to sunlight for 3 hours to be irradiated with ultraviolet light, and then sprayed with water, as in the case of Example 1. When the water was sprayed, water droplets were not formed and the water spread uniformly. Was observed.
【００２１】（実施例７）Ｎaで安定化せしめたコロイ
ダルシリカ（触媒化成社製：カタロイドＳ３０Ｈ）を６
０重量部、ポリオキシエチレン（１０モル）ノニルフェ
ニルエーテル（ＨＬＢ：１３．３）を４０重量部混合
し、更にこの混合液を３０重量％となるように水に混合
して表面処理剤を調製した。この表面処理剤を既に使用
されている窓ガラスに塗布した後、前記実施例１と同様
に光触媒コーティング液を塗布・乾燥させることによ
り、光触媒層を硬化させて試料を得た。上記試料につい
て、前記実施例１と同様に、３時間太陽光に晒すことに
より、紫外線が照射されるようにした後、水を噴霧した
ところ、水滴が形成されず、水が一様に広がる様子が観
察された。(Example 7) Colloidal silica stabilized by Na (catalyst S30H, manufactured by Kasei Kasei Co., Ltd.) was mixed with 6
0 parts by weight, 40 parts by weight of polyoxyethylene (10 mol) nonyl phenyl ether (HLB: 13.3) are mixed, and this mixture is further mixed with water so as to be 30% by weight to prepare a surface treating agent. did. After applying this surface treatment agent to the window glass already used, the photocatalyst layer was hardened by applying and drying the photocatalyst coating liquid in the same manner as in Example 1 to obtain a sample. The above sample was exposed to sunlight for 3 hours to be irradiated with ultraviolet light, and then sprayed with water, as in the case of Example 1. When the water was sprayed, water droplets were not formed and the water spread uniformly. Was observed.
【００２２】（比較例１）既に使用されている窓ガラス
に、石原産業製光触媒コーティング液ＳＴＫ０１（酸化
チタン粒子８重量部とアルキルシリケート２重量部と硝
酸水溶液５４．８重量部とメタノール２８重量部とプロ
パノール７．２重量部からなる組成物）を溶媒（２−プ
ロパノール９重量部とジアセトンアルコール１重量部と
の混合液）で１００倍に希釈して得た光触媒コーティン
グ液を、直径８ｍｍのエアガンを用いて１０５ｍ2／ｇ
スプレーコーティング法により塗布後、２０℃で２０分
乾燥させることにより、光触媒層を硬化させて試料を得
た。上記試料について、光触媒層形成後、３時間太陽光
に晒すことにより、紫外線が照射されるようにした後、
水を噴霧してみたが、水滴が付着してしまい、充分に親
水化されていない様子が観察された。これは、窓ガラス
に付着したシリコーンシーラントに基づく汚れにより、
コーティング液が弾かれ、光触媒が載らなかった部分が
生じたためと考えられる。(Comparative Example 1) A photocatalyst coating solution STK01 manufactured by Ishihara Sangyo (8 parts by weight of titanium oxide particles, 2 parts by weight of alkyl silicate, 54.8 parts by weight of nitric acid aqueous solution, and 28 parts by weight of methanol) was applied to a window glass already used. Of a photocatalyst coating solution obtained by diluting 100 parts by weight of a solvent (a composition comprising 9 parts by weight of 2-propanol and 1 part by weight of diacetone alcohol) with a solvent having a diameter of 8 mm. 105m 2 / g using an air gun
After coating by a spray coating method, the photocatalyst layer was cured by drying at 20 ° C. for 20 minutes to obtain a sample. After the photocatalytic layer was formed, the sample was exposed to sunlight for 3 hours, so that the sample was irradiated with ultraviolet rays.
When spraying water, it was observed that water droplets adhered and were not sufficiently hydrophilized. This is due to the dirt based on the silicone sealant attached to the window glass,
It is considered that the coating liquid was repelled and a portion where the photocatalyst was not applied was generated.
【００２３】（比較例２）Ｎaで安定化せしめたコロイ
ダルシリカ（デュポン社製：ルドックスＡＭ）を８４重
量部、カチオン性界面活性剤としてラウリルトリメチル
アンモニウムクロライド１６重量部を混合し、これを３
０重量％となるように水に混合して表面処理剤を調製し
たが、凝集が起こり表面処理剤としては不安定であるこ
とが確認された。Comparative Example 2 84 parts by weight of Na-stabilized colloidal silica (Ludox AM manufactured by DuPont) and 16 parts by weight of lauryltrimethylammonium chloride as a cationic surfactant were mixed.
The surface treatment agent was prepared by mixing with water so as to be 0% by weight, but it was confirmed that the surface treatment agent was unstable due to aggregation.
【００２４】（比較例３）Ｎaで安定化せしめたコロイ
ダルシリカ（デュポン社製：ルドックスＡＭ）を５０重
量部、フッ素系アニオン性界面活性剤（住友スリーエム
社製：ＦＣ−１２８）を２５重量部、カチオン性界面活
性剤としてラウリルジエタノールアミン酢酸塩を２５重
量部混合し、これを３０重量％となるように水に混合し
て表面処理剤を調製したが、凝集が起こり表面処理剤と
しては不安定であることが確認された。Comparative Example 3 50 parts by weight of colloidal silica stabilized by Na (Ludox AM manufactured by DuPont) and 25 parts by weight of a fluorine-based anionic surfactant (FC-128 manufactured by Sumitomo 3M Limited) Then, 25 parts by weight of lauryl diethanolamine acetate as a cationic surfactant was mixed and mixed with water so as to have a concentration of 30% by weight to prepare a surface treatment agent. However, aggregation occurred and the surface treatment agent was unstable. Was confirmed.
【００２５】以上の実施例及び比較例より、１価のコロ
イダルシリカと非イオン性或いはアニオン性界面活性剤
を所定の割合で含有する表面処理剤を既存の部材に塗布
してから、光触媒性親水性被膜を形成すると、親水性が
発現しやすいことが確認された。From the above Examples and Comparative Examples, a surface treatment agent containing monovalent colloidal silica and a nonionic or anionic surfactant in a predetermined ratio is applied to an existing member, and then the photocatalytic hydrophilic is applied. It was confirmed that when a hydrophilic film was formed, hydrophilicity was easily developed.
【００２６】[0026]
【発明の効果】以上に説明した如く、本発明の表面処理
剤を用いることにより、既存の部材に光触媒性親水性被
膜を形成した場合に、安定的に光触媒の光励起に応じた
親水化効果が発現されるようになる。As described above, by using the surface treatment agent of the present invention, when a photocatalytic hydrophilic film is formed on an existing member, the hydrophilicity effect according to the photoexcitation of the photocatalyst can be stably obtained. Will be expressed.
【図１】既存の部材に光触媒被膜を形成する方法の一例
を示すブロック図FIG. 1 is a block diagram showing an example of a method for forming a photocatalytic film on an existing member.
Claims (6)
る前に、当該表面の前処理を行うために塗布する表面処
理剤であって、この表面処理剤は１価の陽イオンで安定
化されたコロイダルシリカと、非イオン性界面活性剤及
び／又はアニオン性界面活性剤とを含有する安定な水性
分散液からなることを特徴とする光触媒被膜形成用表面
処理剤。1. A surface treatment agent applied to perform a pretreatment on a surface of an existing member before forming a photocatalytic film on the surface, wherein the surface treatment agent is stabilized by a monovalent cation. A surface treatment agent for forming a photocatalytic film, comprising a stable aqueous dispersion containing the obtained colloidal silica and a nonionic surfactant and / or an anionic surfactant.
処理剤において、前記コロイダルシリカと界面活性剤の
合計量に対するコロイダルシリカの割合が４０重量％以
上であることを特徴とする光触媒被膜形成用表面処理
剤。2. The photocatalytic film forming surface treating agent according to claim 1, wherein the ratio of the colloidal silica to the total amount of the colloidal silica and the surfactant is 40% by weight or more. Surface treatment agent.
処理剤において、前記コロイダルシリカと界面活性剤の
割合は、コロイダルシリカが７５〜９０重量％、界面活
性剤が２５〜１０重量％であり、更にこれらコロイダル
シリカ及び界面活性剤が水性液中に０．１〜５０重量％
の濃度で含有していることを特徴とする光触媒被膜形成
用表面処理剤。3. The surface treating agent for forming a photocatalytic film according to claim 1, wherein the ratio of the colloidal silica to the surfactant is 75 to 90% by weight of the colloidal silica and 25 to 10% by weight of the surfactant. The colloidal silica and the surfactant are contained in the aqueous liquid in an amount of 0.1 to 50% by weight.
A surface treating agent for forming a photocatalytic film, characterized by containing at a concentration of:
膜形成用表面処理剤において、この表面処理剤中にはカ
チオン性界面活性剤が含まれないことを特徴とする光触
媒被膜形成用表面処理剤。4. The surface treating agent for forming a photocatalytic film according to claim 1, wherein the surface treating agent does not contain a cationic surfactant. Processing agent.
膜形成用表面処理剤において、前記界面活性剤はエーテ
ル型非イオン性界面活性剤であり、且つそのＨＬＢ（親
水性親油性化指数：Hydrophile-Lipophile-Balance）が
５〜１５であることを特徴とする光触媒被膜形成用表面
処理剤。5. The surface treating agent for forming a photocatalytic film according to claim 1, wherein the surfactant is an ether type nonionic surfactant, and its HLB (hydrophilic lipophilicity index). : Hydrophile-Lipophile-Balance) of 5 to 15;
ルシリカと、非イオン性界面活性剤及び／又はアニオン
性界面活性剤とを含有する水溶液を既存の部材の表面に
塗布し、既存の部材の表面を親水化した後に、当該既存
の部材の表面に光触媒コーティング液を塗布するように
したことを特徴とする光触媒被膜の形成方法。6. An aqueous solution containing monovalent cation-stabilized colloidal silica and a nonionic surfactant and / or anionic surfactant is applied to the surface of an existing member, A method for forming a photocatalytic film, wherein a photocatalytic coating solution is applied to the surface of an existing member after the surface of the member is hydrophilized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9281536A JPH11114429A (en) | 1997-10-15 | 1997-10-15 | Surface treatment agent for forming photocatalyst coating film and method for forming photocatalyst coating film using surface treatment agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9281536A JPH11114429A (en) | 1997-10-15 | 1997-10-15 | Surface treatment agent for forming photocatalyst coating film and method for forming photocatalyst coating film using surface treatment agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11114429A true JPH11114429A (en) | 1999-04-27 |
Family
ID=17640549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9281536A Pending JPH11114429A (en) | 1997-10-15 | 1997-10-15 | Surface treatment agent for forming photocatalyst coating film and method for forming photocatalyst coating film using surface treatment agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11114429A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11286213B2 (en) | 2018-03-28 | 2022-03-29 | Lg Chem, Ltd. | Controlled-release fertilizers |
-
1997
- 1997-10-15 JP JP9281536A patent/JPH11114429A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11286213B2 (en) | 2018-03-28 | 2022-03-29 | Lg Chem, Ltd. | Controlled-release fertilizers |
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