JP2002301429A - Composition for coating building, coating method, and coating structure - Google Patents
Composition for coating building, coating method, and coating structureInfo
- Publication number
- JP2002301429A JP2002301429A JP2002067558A JP2002067558A JP2002301429A JP 2002301429 A JP2002301429 A JP 2002301429A JP 2002067558 A JP2002067558 A JP 2002067558A JP 2002067558 A JP2002067558 A JP 2002067558A JP 2002301429 A JP2002301429 A JP 2002301429A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- composition
- polysilazane
- air
- building
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ポリシラザンを含
有してなる塗装用組成物であって、特に建造物壁面等に
強靭な塗膜を形成することができる建築塗装用組成物、
その塗装方法及びそれによって形成される塗装構造に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating composition containing polysilazane, and more particularly to a composition for building coating capable of forming a tough coating film on a building wall or the like.
The present invention relates to a coating method and a coating structure formed thereby.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】従来、
ポリシラザン含有塗膜形成用組成物としては、ポリシラ
ザンと金属アルコキシドを加熱反応させて得られるポリ
メタロシラザンを含有してなるコーティング用組成物
（特開平１−２２１４６６号）、ポリシラザンとケイ素
アルコキシドを加熱反応させて得られるケイ素アルコキ
シド付加ポリメタロシラザンを含有してなるコーティン
グ用組成物（特開平５−２３８８２７号）、ポリシラザ
ンとグリシドールとを加熱反応させて得られるグリシド
ール付加ポリメタロシラザンを含有してなるコーティン
グ組成物（特開平６−１２２８５２号）、ポリシラザン
とアルコールとを加熱反応させて得られるアルコール付
加ポリメタロシラザンを含有してなるコーティング組成
物（特開平６−２４０２０８号）、ポリシラザンと各種
金属カルボン酸塩を反応させて得られる反応物をを含有
してなるコーティング組成物（特開平６−２９９１１８
号）、ポリシラザンと一般式（ＣＨ3 ＣＯＣＨＣＯＣＨ
3 ）n Ｍ〔Ｍはｎ価の金属〕で示される各種金属のアセ
チルアセトナト錯体を加熱反応させて得られるアセチル
アセトナト錯体付加ポリシラザンを含有してなるコーテ
ィング組成物（特開平６−３０６３２９号）等が開示さ
れている。2. Description of the Related Art
Examples of the composition for forming a polysilazane-containing coating film include a coating composition containing a polymetallosilazane obtained by heating and reacting a polysilazane and a metal alkoxide (JP-A-1-221466), and a heat reaction between a polysilazane and a silicon alkoxide. Coating composition containing a silicon alkoxide-added polymetallosilazane obtained by the reaction (Japanese Patent Application Laid-Open No. Hei 5-23827), and coating containing a glycidol-added polymetalosilazane obtained by heating and reacting polysilazane and glycidol. Composition (JP-A-6-122852), coating composition containing alcohol-added polymetallosilazane obtained by heating and reacting polysilazane and alcohol (JP-A-6-240208), polysilazane and various metal carboxylic acids Salt Coating composition comprising a reaction product obtained by response (JP-A 6-299118
No.), polysilazane and the general formula (CH3 COCHCOCH)
3) A coating composition containing an acetylacetonato complex-added polysilazane obtained by heating and reacting acetylacetonato complexes of various metals represented by nM [M is an n-valent metal] (Japanese Patent Application Laid-Open No. 6-306329). ) Is disclosed.
【０００３】これらのポリシラザン含有コーティング組
成物は、耐熱性、耐摩耗性、耐薬品性に優れ、しかも表
面硬度の高い被膜を形成することができ、更には比較的
より低温で焼成することができ、特にペルヒドロポリシ
ラザンを含有したものは焼成なしで常温で硬化させるこ
とができる有利な点を有している。[0003] These polysilazane-containing coating compositions are excellent in heat resistance, abrasion resistance and chemical resistance, can form a coating having a high surface hardness, and can be fired at a relatively lower temperature. In particular, those containing perhydropolysilazane have the advantage that they can be cured at room temperature without firing.
【０００４】しかし、ペルヒドロポリシラザンに金属カ
ルボン酸塩やアセチルアセトナト錯体などの酸化触媒を
配合したコーティング組成物にあっては、上述のように
焼成なしで常温で硬化させることができる反面、活性が
非常に高いために現場塗装を行うと、すなわち常温・空
気雰囲気下で刷毛塗りやスプレー塗りなどを行うと、大
気中の水分や酸素等と激しく反応し、スプレー塗の場合
にはスプレーガン本体が短時間のうちに目詰まりを起こ
し、結局のところ塗装作業ができなくなる問題があっ
た。この場合、水分や酸素の影響を受けないように工夫
された特殊な塗装システムを用いることが考えられる
が、建築現場における現場塗装にこのような特殊な塗装
システムを使用することは価格的に高価なものとなり現
実的ではなかった。[0004] However, in the case of a coating composition in which an oxidation catalyst such as a metal carboxylate or an acetylacetonate complex is blended with perhydropolysilazane, it can be cured at room temperature without firing as described above, Is very high, so if painting on site, that is, brushing or spraying at room temperature and air atmosphere, reacts violently with moisture and oxygen in the atmosphere, and in the case of spray coating, the spray gun body However, there was a problem that clogging occurred in a short time, and as a result, the painting operation could not be performed. In this case, it is conceivable to use a special coating system that is devised so as not to be affected by moisture or oxygen.However, using such a special coating system for on-site painting at a building site is expensive. It was not realistic.
【０００５】そこで本発明の第１の目的は、上記のよう
な問題点を解消すべく、焼成することなく常温・大気中
で硬化させることができ、それでいて特殊な塗装システ
ムを使わなくても大気中において刷毛塗りやスプレー塗
りなどの現場塗装を行うことができるペルヒドロポリシ
ラザン含有建築塗装用組成物を提供することにある。Accordingly, a first object of the present invention is to solve the above-mentioned problems by curing at room temperature and in the air without firing, and without using a special coating system. It is an object of the present invention to provide a perhydropolysilazane-containing architectural coating composition which can be applied on site such as brush coating or spray coating.
【０００６】他方、近年、酸化チタン等の光機能触媒作
用をする半導体微粒子（以下、「光触媒粒子」という）
が着目され、これら各種半導体微粒子の殺菌、脱臭、脱
曇、洗浄など様々な用途が開示されてきている。例え
ば、酸化チタンを道路の防音壁や建物の外壁、電話ボッ
クスなどの表面に付着させると、セルフクリーニング機
能をこれら表面に付与することができる。On the other hand, in recent years, semiconductor fine particles such as titanium oxide which act as a photofunctional catalyst (hereinafter referred to as "photocatalytic particles").
And various uses such as sterilization, deodorization, declouding, and washing of these various semiconductor fine particles have been disclosed. For example, when titanium oxide is attached to the surface of a soundproof wall of a road, the outer wall of a building, a telephone box, or the like, a self-cleaning function can be given to these surfaces.
【０００７】このような光触媒粒子を対象表面に付着さ
せる方法としては、特開平９−１６４０９１号等におい
て、有機バインダを用いて光触媒粒子を対象表面に担持
させる方法や、対象表面に光触媒の前駆体を塗布してお
き６００℃前後で焼き付ける方法、更には加熱したプラ
スチック製の対象表面に光触媒粒子を塗布し、金型等で
押圧して光触媒粒子を埋設する方法などが開示されてい
る。[0007] As a method of attaching such photocatalyst particles to the target surface, Japanese Patent Application Laid-Open No. 9-164091 discloses a method of supporting the photocatalyst particles on the target surface using an organic binder, And a method in which photocatalyst particles are coated on a heated plastic target surface and pressed with a mold or the like to embed the photocatalyst particles.
【０００８】しかし、有機バインダを使用する方法は、
光触媒作用により光触媒粒子周辺の有機バインダが分解
してバインダ機能を失って光触媒が基板から脱落するよ
うになるため寿命が短いという課題があった。また、６
００℃前後で焼き付ける方法を建造物の壁面に適用する
ことは事実上不可能であったし、また、上記の光触媒粒
子を埋設する方法も対象表面を予め加熱しておかなけれ
ばならないため、建造物の壁面への施工は現実的に困難
であった。However, the method using an organic binder is as follows.
Due to the photocatalytic action, the organic binder around the photocatalyst particles is decomposed and loses the binder function, so that the photocatalyst falls off the substrate, so that the life is short. Also, 6
Since it was practically impossible to apply the method of baking at around 00 ° C. to the wall surface of the building, and the method of burying the photocatalyst particles described above requires that the target surface be heated in advance, Construction on the wall of the object was practically difficult.
【０００９】そこで本発明の第２の目的は、上記のよう
な問題点を解消すべく、有機バインダを使用せず、しか
も焼成することなく光触媒粒子を対象表面へ付着させる
ことができ、特に建造物の壁面に強靱で寿命の長い光触
媒活性被膜を現場塗装によって形成することができるポ
リシラザン含有建築塗装用組成物を提供することにあ
る。Accordingly, a second object of the present invention is to solve the above-mentioned problems by allowing photocatalyst particles to adhere to the surface of an object without using an organic binder and without firing. An object of the present invention is to provide a polysilazane-containing architectural coating composition capable of forming a tough and long-life photocatalytically active coating on the wall surface of an object by in-situ coating.
【００１０】[0010]
【課題を解決するための手段】かかる目的達成のため、
本発明者らは先ず、有機溶媒にペルヒドロポリシラザン
と酸化触媒とを配合してなる塗膜形成用組成物におい
て、通常の塗料として想定できる限界まで希釈して大気
中でスプレー塗装を試行したがスプレーガン本体が目詰
まりを起こした。その後も、各種添加剤を加えるなど配
合組成を変更して試行してみたが、常温・大気中で硬化
させることができ、かつ大気中で簡易に現場塗装を行う
ことができる結果は得られなかった。ところが、偶然に
通常の塗料として想定できない程度に薄められた組成物
が出来上がり、これについて試行した結果、信じられな
いことに常温・大気中で硬化させることができ、しかも
大気中で簡易に現場塗装を行うことができることを発見
した。本発明はかかる知見に基づきなされたものであ
る。Means for Solving the Problems In order to achieve this object,
The present inventors first tried spray coating in the atmosphere by diluting a coating film forming composition obtained by blending perhydropolysilazane and an oxidation catalyst with an organic solvent to a limit that can be assumed as a normal coating material. The spray gun body was clogged. After that, I tried it by changing the composition such as adding various additives, but I was able to cure at room temperature and air, and I could not obtain the result that I could easily perform on-site painting in the air Was. However, a composition that was accidentally thinned to the extent that it could not be assumed as a normal paint was completed, and as a result of trying this, it was incredible that it could be cured at room temperature and in the air, and it could be easily applied in-situ in air. Have found that you can do that. The present invention has been made based on such findings.
【００１１】すなわち、請求項１の発明は、ＯＨ機を有
しない有機溶媒、ポリシラザン及び酸化触媒を含有して
なる建築塗装用組成物であって、当該ポリシラザンとし
て、有機基を有しないペルヒドロポリシラザン（数平均
分子量１００〜５万）を固形分濃度換算で０．１〜５重
量％配合することを特徴とする建築塗装用組成物であ
り、請求項２の発明は、かかる建築塗装用組成物の組成
中に光触媒粒子を配合してなるものである。また、請求
項３の発明は、上記建築塗装用組成物を刷毛、ローラー
刷毛、スプレーなどの塗装によって塗布することを特徴
とする塗装方法であり、請求項４の発明は、上記建築塗
装用組成物を０．０１μｍ〜１μｍの厚さに塗布してな
る塗装構造である。That is, the invention of claim 1 is an architectural coating composition containing an organic solvent having no OH unit, polysilazane and an oxidation catalyst, wherein the polysilazane is a perhydropolysilazane having no organic group. (Number average molecular weight of 100 to 50,000) in a composition of 0.1 to 5% by weight in terms of solid content concentration. And photocatalyst particles are blended into the composition. Further, the invention of claim 3 is a coating method characterized in that the composition for building coating is applied by coating such as brush, roller brush, spray or the like, and the invention of claim 4 is the coating method for building coating. It is a coating structure formed by applying an object to a thickness of 0.01 μm to 1 μm.
【００１２】[0012]
【発明の実施の形態】以下、本発明における好適な実施
形態について説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below.
【００１３】本発明の建築塗装用組成物は、「ポリシラ
ザン」と「酸化触媒」とを「溶媒」に配合してポリシラ
ザン溶液を調製し、これを更に「溶剤」で希釈して製造
することができる。以下この製造方法に従って説明する
が、本発明の建築塗装用組成物の製法はこれに限定され
るものではなく、当該「溶剤」を用いることなく一度に
所定濃度に希釈することも可能である。The architectural coating composition of the present invention can be produced by blending "polysilazane" and "oxidation catalyst" with "solvent" to prepare a polysilazane solution, and further diluting the solution with "solvent". it can. Hereinafter, the production method will be described, but the production method of the architectural coating composition of the present invention is not limited thereto, and the composition can be diluted to a predetermined concentration at once without using the “solvent”.
【００１４】本発明で使用する「ポリシラザン」は、ポ
リシラザンを示す下記化学式において、Ｒ1 、Ｒ2 及び
Ｒ3 のいずれもが水素原子であるペルヒドロポリシラザ
ンである。有機基を有しないペルヒドロポリシラザン
は、Ｓｉ又はＮに結合しているのが全てＨであるため、
立体障害が小さく反応を妨げないばかりか、有機基のよ
うに酸化・分解されることがない。したがって、常温・
大気中で保持するだけで酸化、或いは空気中の水蒸気に
よる加水分解が進んで硬化し、しかも完全無機質バイン
ダーとして機能するため光触媒作用によって分解するこ
とがなく寿命の長い光触媒活性被膜を形成することがで
きる。なお、ペルヒドロポリシラザンの分子量は特に限
定するものではなく数平均分子量１００〜５万のものが
使用可能である。The "polysilazane" used in the present invention is a perhydropolysilazane in which R1, R2 and R3 are all hydrogen atoms in the following chemical formula representing polysilazane. Since perhydropolysilazane having no organic group is all H bonded to Si or N,
Not only does steric hindrance not hinder the reaction, but it is not oxidized or decomposed unlike organic groups. Therefore, at room temperature
Oxidation or hydrolysis due to water vapor in the air proceeds and cures just by holding in the air, and since it functions as a completely inorganic binder, it can form a photocatalytically active film with a long life without being decomposed by photocatalysis. it can. The molecular weight of perhydropolysilazane is not particularly limited, and those having a number average molecular weight of 100 to 50,000 can be used.
【００１５】[0015]
【化１】 Embedded image
【００１６】本発明で使用する「酸化触媒」としては、
特開平６−２９９１１８号の［００２４］欄で開示され
ている金属カルボン酸塩、具体的には一般式（ＲＣＯ
Ｏ）nＭ〔Ｍはｎ価の金属〕で示され、金属〔Ｍ〕とし
て例えばニッケル、チタン、白金、ロジウム、コバル
ト、鉄、ルテニウム、オスミウム、パラジウム、イリジ
ウム、アルミニウムなどの群から選択される少なくとも
一種の金属を有するものや、特開平６−３０６３２９号
の［００２３］欄で開示されている各種金属のアセチル
アセトナト錯体、具体的にはアセチルアセトン（２、４
−ペンタジオン）から酸解離により生じた陰イオンが金
属原子に配位した錯体であり、一般式（ＣＨ3 ＣＯＣＨ
ＣＯＣＨ3 ）n Ｍ〔Ｍはｎ価の金属〕で示され、金属
〔Ｍ〕として例えばニッケル、白金、パラジウム、アル
ミニウム、ロジウムなどを有するものなどを挙げること
ができる。ただし、これらに限定されるものではない。
「酸化触媒」の配合量は、酸化触媒／ポリシラザン重合
比率が０．０００００１〜２、好ましくは０．００１〜
１、さらに好ましくは０．０１〜０．５になるように加
える。The "oxidation catalyst" used in the present invention includes:
Metal carboxylates disclosed in column [0024] of JP-A-6-299118, specifically, those represented by the general formula (RCO
O) nM [M is an n-valent metal], and the metal [M] is at least selected from the group of nickel, titanium, platinum, rhodium, cobalt, iron, ruthenium, osmium, palladium, iridium, aluminum and the like. A compound having one kind of metal or an acetylacetonato complex of various metals disclosed in column [0023] of JP-A-6-306329, specifically acetylacetone (2,4)
-Pentadione) is a complex in which an anion generated by acid dissociation from a metal atom is coordinated with a general formula (CH3 COCH)
COCH3) n M [M is an n-valent metal]. Examples of the metal [M] include nickel, platinum, palladium, aluminum, rhodium and the like. However, it is not limited to these.
The amount of the “oxidation catalyst” is such that the oxidation catalyst / polysilazane polymerization ratio is 0.000001 to 2, preferably 0.001 to 1.
1, more preferably 0.01 to 0.5.
【００１７】本発明で使用する「溶媒」には、芳香族炭
化水素、脂肪族炭化水素、脂環式炭化水素の炭化水素溶
媒、ハロゲン化炭化水素、脂肪族エーテル、脂環族エー
テル、芳香族アミン類などであってＯＨ基を有しない有
機溶媒、例えばベンゼン、トルエン、キシレン、塩化メ
チレン、クロロホルム、ｎ−ヘキサン、エチルエーテ
ル、テトラヒドロフラン、ピリジン、メチルピリジンな
どを使用する。本発明においてＯＨ基を有しない有機溶
媒に限定するのは、溶媒とポリシラザンとの反応を防ぐ
ためである。The "solvent" used in the present invention includes aromatic hydrocarbons, aliphatic hydrocarbons, alicyclic hydrocarbon solvents, halogenated hydrocarbons, aliphatic ethers, alicyclic ethers, and aromatic hydrocarbons. An organic solvent such as amines having no OH group, for example, benzene, toluene, xylene, methylene chloride, chloroform, n-hexane, ethyl ether, tetrahydrofuran, pyridine, methylpyridine and the like is used. The reason why the organic solvent having no OH group is limited in the present invention is to prevent the reaction between the solvent and polysilazane.
【００１８】本発明で用いる「溶剤」としては、溶媒と
して例示した有機溶媒、すなわちＯＨ基を有しない有機
溶媒を好適に用いることができる。As the "solvent" used in the present invention, the organic solvents exemplified as the solvent, that is, organic solvents having no OH group can be suitably used.
【００１９】本発明の建築塗装用組成物は、上記「ポリ
シラザン」と上記「酸化触媒」とを上記「溶媒」に配合
してポリシラザン溶液を調製し、更にこのポリシラザン
溶液を上記「溶剤」で希釈して作成することができるも
のであるが、この時、「ペルヒドロポリシラザン」の配
合割合は、溶媒乃至溶剤中に固形分濃度として０．１〜
５重量％、好ましくは０．１〜３重量％含まれるように
調整する。５重量％より多くなるとたちまち大気中での
現場塗装は不可能となるし、０．１重量％よりも少ない
とバインダーとして機能が極端に低下する。特開平６−
２９９１１８号の［００３１］欄や、特開平６−３０６
３２９号の［００３１］欄などには溶剤濃度が０〜９０
重量％の範囲で調整すればよい結果が得られると記載さ
れており、しかも、建築の用途に使われる建築塗装用組
成物においては、塗膜厚を考えて固形成分の濃度が１０
％を下回ることは通常は到底考えられないことであっ
た。しかし本発明では、そこをあえて５重量％以下に調
整することにより、本発明特有の効果を得ることに成功
した。The composition for architectural coating of the present invention is prepared by mixing the "polysilazane" and the "oxidation catalyst" with the "solvent" to prepare a polysilazane solution, and further diluting the polysilazane solution with the "solvent". At this time, the mixing ratio of "perhydropolysilazane" is 0.1 to 0.1 as a solid concentration in the solvent or the solvent.
It is adjusted to contain 5% by weight, preferably 0.1 to 3% by weight. If it exceeds 5% by weight, on-the-spot painting in the atmosphere becomes impossible immediately, and if it is less than 0.1% by weight, the function as a binder is extremely reduced. JP-A-6
No. 299118, column [0031] and JP-A-6-306.
In the column [0031] of No. 329, the solvent concentration is 0 to 90.
It is described that a good result can be obtained by adjusting the amount in the range of weight%. In addition, in the composition for architectural coating used for architectural use, the concentration of the solid component is 10
Going below the percent was usually inconceivable. However, in the present invention, by adjusting the content thereof to 5% by weight or less, the effect unique to the present invention was successfully obtained.
【００２０】更に、上記配合組成に「光触媒粒子」を配
合して塗膜に光触媒作用を付与することができる。Further, a photocatalytic action can be imparted to the coating film by blending “photocatalytic particles” with the above composition.
【００２１】「光触媒粒子」としては、酸化チタン（Ｔ
ｉＯ2 ）、酸化鉄（Ｆｅ2 Ｏ3 ）、酸化タングステン
（ＷＯ1 ）、酸化亜鉛（ＺｎＯ）、硫化亜鉛（Ｚｎ
Ｓ）、硫化カドミウム（ＣｄＳ）、チタン酸ストロチウ
ム（ＳｒＴｉＯ2 ）、硫化モリブデン（ＭｏＳ2 ）等の
従来知られた光触媒の微粒子を用いることができる。The “photocatalyst particles” include titanium oxide (T
iO2), iron oxide (Fe2 O3), tungsten oxide (WO1), zinc oxide (ZnO), zinc sulfide (Zn)
S), cadmium sulfide (CdS), strontium titanate (SrTiO2), molybdenum sulfide (MoS2), and other conventionally known fine particles of a photocatalyst can be used.
【００２２】この「光触媒粒子」は、上記のポリシラザ
ン溶液に直接混合することもできるが、光触媒粒子をよ
り均一に分散させるために、ポリシラザン溶液とは別に
ｍ−キシレン、ｏ−キシレン等の各種有機溶剤に分散剤
を混合し、これに光触媒粒子を混合して微粒子分散液を
調整し、この微粒子分散液と上記ポリシラザン溶液とを
混合して建築塗装用組成物を作成することができる。こ
こで「分散剤」としては、例えばゼネカ社製ソルスパー
ス＃３０００、＃９０００、＃１７０００が挙げられ、
好ましくは＃９０００及び＃１７０００が使用される。
この分散剤の量は、光触媒粒子に対して５〜５０重量％
が好ましく、特に１０〜３０重量％が好ましい。The "photocatalyst particles" can be directly mixed with the above-mentioned polysilazane solution. However, in order to disperse the photocatalyst particles more uniformly, various organic materials such as m-xylene and o-xylene are separately provided from the polysilazane solution. A dispersant is mixed with a solvent, photocatalyst particles are mixed with the solvent to prepare a fine particle dispersion, and the fine particle dispersion and the polysilazane solution are mixed to prepare a building coating composition. Here, as the “dispersant”, for example, Solsperse # 3000, # 9000, # 17000 manufactured by Zeneca Corp. are exemplified,
Preferably, # 9000 and # 17000 are used.
The amount of the dispersant is 5 to 50% by weight based on the photocatalyst particles.
, And particularly preferably 10 to 30% by weight.
【００２３】以下、本発明の建築塗装用組成物の施工方
法の一例として、建築物の外装壁に塗布する場合の施工
方法を説明する。Hereinafter, as an example of a method of applying the building coating composition of the present invention, a method of applying the composition to an exterior wall of a building will be described.
【００２４】先ず、必要に応じてではあるが、ポリシラ
ザンの塗装に先立って、塗装対象面に対し高圧洗浄機等
を用いて洗浄作業を行い、しかる後気乾養生を経て塗装
対象面を完全に乾燥させる。First, although necessary, prior to coating the polysilazane, the surface to be coated is washed using a high-pressure washing machine or the like, and then the surface to be coated is completely dried and cured. dry.
【００２５】そうして次に、上記の如く作成した建築塗
装用組成物をスプレー塗り等の現場塗装によって建築物
の外壁面に塗布する。スプレー装置としては、特に水分
や酸素の影響を受けないように工夫された特殊な塗装シ
ステムを使用する必要はないが、塗着効率６５％以上及
び霧化エア圧０．１psi 〜１０psi （０．００７〜０．
７ｋｇ／ｃｍ2 ）の基準に適合する静電塗装機或いはハ
イボリューム・ロープレッシャー・スプレーを使用すれ
ば、より目詰まりがなく、より均一に塗布することがで
きる。Then, the composition for building coating prepared as described above is applied to the outer wall surface of the building by in-situ coating such as spray coating. It is not necessary to use a special coating system specially designed so as not to be affected by moisture or oxygen as the spraying device. However, a coating efficiency of 65% or more and an atomizing air pressure of 0.1 psi to 10 psi (0. 007-0.
If an electrostatic coating machine or a high-volume low-pressure spray that conforms to the standard of 7 kg / cm 2) is used, the coating can be performed more uniformly without clogging.
【００２６】またこのとき、建築塗装用組成物を塗布す
る量は、特に光触媒粒子を配合する場合には０．０１μ
ｍ〜１μｍの厚さに塗布するのが好ましい。建築用の塗
膜厚と言えば通常は３０μｍ〜５０μｍであるから、通
常は想定しずらい厚さではあるが、０．０１μｍ〜１μ
ｍの塗膜厚に形成することにより、粒径０．０１μｍ〜
１μｍの光触媒粒子を確実に被膜表面に散在させること
ができ、しかも外壁面に確実に付着させることができ
る。なお、塗装対象表面は各種金属・コンクリ−ト及び
ガラス或いは各種プラスチック等、その素材は特に限定
されるものではない。At this time, the amount of the composition for architectural coating is 0.01 μm especially when photocatalyst particles are blended.
It is preferably applied to a thickness of from m to 1 μm. Speaking of the coating thickness for architectural use, it is usually 30 μm to 50 μm, so it is usually difficult to assume, but 0.01 μm to 1 μm.
m to a coating thickness of 0.01 m
The photocatalyst particles of 1 μm can be reliably scattered on the surface of the coating film, and can be securely adhered to the outer wall surface. The material to be coated is not particularly limited, such as various metals, concrete, glass, and various plastics.
【００２７】このように塗布された建築塗装用組成物
は、空気中室温で１〜３日放置することにより、組成物
中のペルヒドロポリシラザンは酸化触媒によって酸化が
促進され硬化し、表面に光触媒が分散したＳｉ−Ｏ系又
はＳｉ−Ｎ−Ｏ系セラミックスすなわち完全無機の緻密
で強靱な被膜が形成される。この被膜は耐蝕性、耐熱
性、耐摩耗性に優れており、対象表面との密着性が高
く、しかも被膜が完全無機質であるため光触媒によって
分解・劣化することがない。The composition for architectural coating applied in this manner is allowed to stand in air at room temperature for 1 to 3 days, whereby the oxidation of perhydropolysilazane in the composition is accelerated by an oxidation catalyst, and the composition is hardened. , Or Si-NO-based ceramics, that is, a completely inorganic dense and tough film is formed. This film is excellent in corrosion resistance, heat resistance, and abrasion resistance, has high adhesion to the target surface, and is not completely decomposed or deteriorated by a photocatalyst because the film is completely inorganic.
【００２８】また、表面に光触媒を散在させることによ
り、当該光触媒がバンドキャップ以上のエネルギーをも
つ波長の光、例えば太陽光や電灯の光を受けることによ
って、光励起によってその表面に強い還元作用をもつ電
子と、強い酸化作用をもつ正孔とを生じ、これらの酸化
還元作用により表面に付着した有機物質や油分などの汚
れ物質を分解・除去するセルフクリーニング機能が発揮
される。なお、特許第２７５６４７４号は、光触媒の光
触媒作用によって表面に水酸基（ＯＨ- ）の形で化学吸
着させて基材表面を親水化して表面にセルフクリーニン
グ機能を付与するという考え方を開示している。例えば
シリコーン塗料に光触媒粒子を分散させてなる塗料用組
成物の場合、シリコーン分子のケイ素原子に結合した有
機基を光触媒作用により水酸基に置換させることによっ
て対象表面（言い換えればバインダとしてのシリコーン
塗料表面）自体を親水化するというものである。これに
対し、本発明は、有機基を有しないペルヒドロポリシラ
ザンを使用し、かつ溶媒及び溶剤としてもＯＨ基を有し
ないものを使用するものであるから、光触媒作用により
被膜表面自体を親水化するという特許第２７５６４７４
号の思想とは全く異なるものである。ちなみに、特許第
２７５６４７４号もポリシラザンの使用を開示している
が、有機基を有するオルガノポリシラザン化合物に限定
している。この点からも両者の差異は明らかである。Further, by dispersing the photocatalyst on the surface, the photocatalyst receives light of a wavelength having energy equal to or greater than the band cap, for example, light of sunlight or an electric lamp, and has a strong reducing action on the surface by photoexcitation. Electrons and holes having a strong oxidizing action are generated, and a self-cleaning function of decomposing and removing dirt substances such as organic substances and oils attached to the surface by the redox action is exhibited. In addition, Japanese Patent No. 2756474 discloses a concept that a photocatalytic action of a photocatalyst causes the surface to be chemically adsorbed in the form of a hydroxyl group (OH −) to hydrophilize the substrate surface and impart a self-cleaning function to the surface. For example, in the case of a coating composition obtained by dispersing photocatalyst particles in a silicone coating, an organic group bonded to a silicon atom of a silicone molecule is replaced with a hydroxyl group by a photocatalytic action, whereby the target surface (in other words, the surface of the silicone coating as a binder). It is to make itself hydrophilic. In contrast, the present invention uses perhydropolysilazane having no organic group, and uses a solvent and a solvent having no OH group as a solvent, so that the surface of the coating itself is hydrophilized by photocatalysis. Patent No. 2756474
It is completely different from the idea of the issue. Incidentally, Japanese Patent No. 2756474 also discloses the use of polysilazane, but is limited to an organopolysilazane compound having an organic group. From this point, the difference between the two is clear.
【００２９】[0029]
【実施例】以下、本発明の実施例について説明する。Embodiments of the present invention will be described below.
【００３０】（１）建築塗装用組成物の製造 有機基を有しないペルヒドロポリシラザン（無機ポリシ
ラザン）及びプロピオン酸パラジウム（Ｃ2 Ｈ5 ＣＯＯ
Ｐｄ）をｍ−キシレン溶液に溶解して２０重量％ポリシ
ラザン溶液を調製し、これを更にｍ−キシレン溶液で希
釈して下記表１の各配合（配合１〜４）の建築塗装用組
成物を製造した。(1) Production of a composition for architectural coating: Perhydropolysilazane having no organic group (inorganic polysilazane) and palladium propionate (C 2 H 5 COO)
Pd) was dissolved in an m-xylene solution to prepare a 20 wt% polysilazane solution, which was further diluted with an m-xylene solution to obtain an architectural coating composition of each formulation (formulations 1 to 4) in Table 1 below. Manufactured.
【００３１】[0031]
【表１】 [Table 1]
【００３２】（２）刷毛塗り塗装 上記配合１〜４の塗膜形成用組成物をポリカップ容器に
１００ｇ計り取り、金属板に平刷毛を用いて塗布量１０
〜２０ｇ／ｍ2 の割合で塗布する作業を行った。作業は
２０℃、６５％の環境下で行い、この際、材料が空気中
の酸素や水分と反応して刷毛塗り作業に支障をきたすま
での時間を作業限界時間とし、試験結果を表２に示し
た。(2) Brush Coating 100 g of the composition for forming a coating film of Formulations 1 to 4 was weighed in a polycup container, and the coating amount was adjusted to 10 using a flat brush on a metal plate.
Coating was performed at a rate of ２０20 g / m 2. The work was performed in an environment of 20 ° C. and 65%. At this time, the time required for the material to react with oxygen and moisture in the air and hinder the brushing work was defined as the work limit time, and the test results are shown in Table 2. Indicated.
【００３３】[0033]
【表２】 [Table 2]
【００３４】この結果、配合１及び２については作業時
間が１０分又は２０分を経過するまでに既に容器の中で
ゲル化が始まっており、これ以上の塗装作業ができなか
った。他方、配合３及び４については塗装作業終了（お
よそ３０分間）まで材料のゲル化は生じず、塗りムラの
ない通常の塗装作業を行うことができた。As a result, with respect to Formulations 1 and 2, gelation had already begun in the container before the working time of 10 or 20 minutes had elapsed, and further coating work could not be performed. On the other hand, with regard to Formulations 3 and 4, no gelling of the material occurred until the end of the coating operation (about 30 minutes), and a normal coating operation without coating unevenness could be performed.
【００３５】（３）ローラー刷毛塗装 上記配合１〜４の建築塗装用組成物をポリカップ容器に
１００ｇ計り取り、金属板にローラー刷毛を用いて塗布
量１０〜２０ｇ／ｍ2 の割合で塗布する作業を行った。
作業は２０℃、６５％の環境下で行い、この際、材料が
空気中の酸素や水分と反応して刷毛塗り作業に支障をき
たすまでの時間を作業限界時間とし、試験結果を表３に
示した。(3) Roller brush coating 100 g of the architectural coating composition of Formulations 1 to 4 is weighed in a polycup container and applied to a metal plate using a roller brush at an application rate of 10 to 20 g / m 2. went.
The work was carried out in an environment of 20 ° C. and 65%. At this time, the time required for the material to react with oxygen and moisture in the air and hinder the brushing work was defined as a work limit time, and the test results are shown in Table 3. Indicated.
【００３６】[0036]
【表３】 [Table 3]
【００３７】この結果、配合１及び２については作業時
間が１０分又は２０分を経過するまでに既に容器の中で
ゲル化が始まっており、これ以上の塗装作業ができなか
った。他方、配合３及び４については塗装作業終了（お
よそ３０分間）まで材料のゲル化は生じず、塗りムラの
ない通常の塗装作業を行うことができた。As a result, with respect to Formulations 1 and 2, gelation had already begun in the container by the time the work time passed for 10 or 20 minutes, and further coating work could not be performed. On the other hand, with regard to Formulations 3 and 4, no gelling of the material occurred until the end of the coating operation (about 30 minutes), and a normal coating operation without coating unevenness could be performed.
【００３８】（４）エアースプレーガンによる吹き付け
塗装 上記配合１〜４の建築塗装用組成物をエアースプレーガ
ンを用いて１分間スプー塗装をした後、３０秒間休止を
する工程を繰り返して塗装作業を行った。使用したエア
ースプレーガンの設定・塗装条件は以下の通りである。 ノズル径：０．６ｍｍ 吹き付け空気圧力：３．０ｋｇ／ｃｍ2 空気使用量：３０リットル／ｍｉｎ 吹き付け距離：２００ｍｍ 塗料噴出量：３０ミリリットル／ｍｉｎ 移動速度：約２０ｃｍ／ｍｉｎ パターン開き：１００ｍｍ 作業は２０℃、６５％の環境下で行い、この際、材料が
空気中の酸素や水分と反応して塗装作業に支障をきたす
までの回数を測定し、これを塗装可能時間の目安とし、
試験結果を表４に示した。(4) Spray coating with an air spray gun After the composition coating composition of the above-mentioned compositions 1 to 4 is spour-coated with an air spray gun for 1 minute, the process of pausing for 30 seconds is repeated to repeat the coating operation. went. The setting and coating conditions of the used air spray gun are as follows. Nozzle diameter: 0.6 mm Blowing air pressure: 3.0 kg / cm2 Air consumption: 30 l / min Blowing distance: 200 mm Paint ejection amount: 30 ml / min Moving speed: about 20 cm / min Pattern opening: 100 mm Work at 20 ° C , 65% of the environment, at this time, the number of times the material reacts with oxygen and moisture in the air and interferes with the painting work is measured, and this is used as a guide for the paintable time,
The test results are shown in Table 4.
【００３９】[0039]
【表４】 [Table 4]
【００４０】この結果、配合１及び２については、塗装
−休止２〜５回でノズル詰まりの影響によって材料の出
が悪くなり、ガン先から液ダレが生じるなどの原因から
これ以上スプレー塗装できない状態となった。他方、配
合３及び４については、用意した組成物が全て無くなる
まで（およそ１５分間）までスプレー開始時の状態を維
持していた。As a result, with regard to Formulations 1 and 2, the spraying of the material became worse due to the clogging of the nozzle after coating and stopping 2 to 5 times, and the liquid could not be sprayed from the tip of the gun. It became. On the other hand, for Formulations 3 and 4, the state at the start of spraying was maintained until all of the prepared compositions disappeared (about 15 minutes).
───────────────────────────────────────────────────── フロントページの続き (72)発明者 *** 伴治 東京都千代田区永田町２丁目12番14号 株 式会社エービーシー商会内 Ｆターム(参考） 4D075 AA01 AC47 BB92Z CA02 CA13 CA18 CA33 CA34 DB01 DB12 DB13 DC01 DC02 DC05 EA07 EB01 EB42 EB52 EB56 EC02 EC30 EC37 4J038 DL171 KA04 KA06 MA14 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor, Kanji 2--12-14, Nagatacho, Chiyoda-ku, Tokyo F-term in ABC Corporation (reference) 4D075 AA01 AC47 BB92Z CA02 CA13 CA18 CA33 CA34 DB01 DB12 DB13 DC01 DC02 DC05 EA07 EB01 EB42 EB52 EB56 EC02 EC30 EC37 4J038 DL171 KA04 KA06 MA14
Claims (4)
ン及び酸化触媒を含有してなる建築塗装用組成物であっ
て、 当該ポリシラザンとして、有機基を有しないペルヒドロ
ポリシラザン（数平均分子量１００〜５万）を固形分濃
度換算で０．１〜５重量％配合することを特徴とする建
築塗装用組成物。An architectural coating composition comprising an organic solvent having no OH unit, polysilazane and an oxidation catalyst, wherein the polysilazane is a perhydropolysilazane having no organic group (number average molecular weight of 100 to 5). (10,000) in an amount of 0.1 to 5% by weight in terms of solid content concentration.
載の建築塗装用組成物。2. The architectural coating composition according to claim 1, further comprising photocatalyst particles.
物を、刷毛、ローラー刷毛、スプレーなどの塗装によっ
て塗布することを特徴とする塗装方法。3. A coating method comprising applying the composition for architectural coating according to claim 1 or 2 by coating with a brush, a roller brush, a spray or the like.
物を０．０１μｍ〜１μｍの厚さに塗布してなる塗装構
造。4. A coating structure formed by applying the composition for architectural coating according to claim 1 to a thickness of 0.01 μm to 1 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002067558A JP2002301429A (en) | 2002-03-12 | 2002-03-12 | Composition for coating building, coating method, and coating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002067558A JP2002301429A (en) | 2002-03-12 | 2002-03-12 | Composition for coating building, coating method, and coating structure |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22673798A Division JP3486807B2 (en) | 1998-08-11 | 1998-08-11 | Self-cleaning coating composition for construction site painting, painting method by construction site painting and painting structure by construction site painting |
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| Publication Number | Publication Date |
|---|---|
| JP2002301429A true JP2002301429A (en) | 2002-10-15 |
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ID=19193123
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002067558A Pending JP2002301429A (en) | 2002-03-12 | 2002-03-12 | Composition for coating building, coating method, and coating structure |
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| JP (1) | JP2002301429A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005085375A1 (en) * | 2004-03-04 | 2005-09-15 | Clariant International Ltd | Coating for metal surfaces, method for the production thereof and use thereof as a self-cleaning protective layer, particularly for the rims of automobiles |
| US7015144B2 (en) * | 2003-02-12 | 2006-03-21 | Samsung Electronics Co., Ltd. | Compositions including perhydro-polysilazane used in a semiconductor manufacturing process and methods of manufacturing semiconductor devices using the same |
-
2002
- 2002-03-12 JP JP2002067558A patent/JP2002301429A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7015144B2 (en) * | 2003-02-12 | 2006-03-21 | Samsung Electronics Co., Ltd. | Compositions including perhydro-polysilazane used in a semiconductor manufacturing process and methods of manufacturing semiconductor devices using the same |
| US7429637B2 (en) | 2003-02-12 | 2008-09-30 | Samsung Electronics Co., Ltd. | Compositions including perhydro-polysilazane used in a semiconductor manufacturing process and methods of manufacturing semiconductor devices using the same |
| WO2005085375A1 (en) * | 2004-03-04 | 2005-09-15 | Clariant International Ltd | Coating for metal surfaces, method for the production thereof and use thereof as a self-cleaning protective layer, particularly for the rims of automobiles |
| DE102004011213A1 (en) * | 2004-03-04 | 2005-09-22 | Clariant International Limited | Coatings for metal surfaces, process for their preparation and their use as self-cleaning protective layer, especially for car rims |
| JP2007526378A (en) * | 2004-03-04 | 2007-09-13 | クラリアント インターナショナル リミテッド | Metal surface paint, process for its production and its use as a self-cleaning protective layer, especially for automotive rims |
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