JP2640270B2 - Algae-proof powder and method for producing the same - Google Patents
Algae-proof powder and method for producing the sameInfo
- Publication number
- JP2640270B2 JP2640270B2 JP9523789A JP9523789A JP2640270B2 JP 2640270 B2 JP2640270 B2 JP 2640270B2 JP 9523789 A JP9523789 A JP 9523789A JP 9523789 A JP9523789 A JP 9523789A JP 2640270 B2 JP2640270 B2 JP 2640270B2
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- Prior art keywords
- algal
- titanium oxide
- powder
- metal
- particles
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、含水酸化チタンもしくは酸化チタンの粒子
表面に防藻性金属を担持してなる防藻性粉末およびその
製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an anti-algal powder having an algal-inhibiting metal supported on the surface of hydrous titanium oxide or titanium oxide particles and a method for producing the same.
一般にビルディングの外壁のほか、浴室や台所などに
はカビのほかに緑藻などの植物類が発生し易く、その結
果、それらの美粧性をそこねるとともに、耐久性の低下
やさらには衛生環境を劣悪化したりする。このため藻類
の付着、繁殖を防ぎ構築物などの前記汚損を回避すべ
く、従来から種々の提案がなされてきている。たとえば
ベンゾチアゾール系やフェニル尿素系などの有機系防藻
剤を添加した塗料で構築物を塗布する方法がよく知られ
ている。しかしながら、一般にこの種の有機系防藻剤に
よる場合にあっては、たとえば防藻効果の持続性が十分
でなかったり、あるいは防藻剤によって塗膜が黄変され
たりさらには塗膜強度が低下したりするなど塗膜物性へ
の影響がさけられなかったりし、その改善が強く希求さ
れている。In general, in addition to mold, greenery algae and other plants are liable to develop on the exterior walls of the building, as well as in bathrooms and kitchens, and as a result, their aesthetics are impaired, the durability is reduced, and the sanitary environment is deteriorated. Or For this reason, various proposals have hitherto been made in order to prevent the adhesion and propagation of algae and to avoid the above-mentioned fouling of structures and the like. For example, a method of applying a construction with a paint to which an organic anti-algal agent such as benzothiazole or phenylurea is added is well known. However, in general, when using this kind of organic anti-algal agent, for example, the persistence of the anti-algal effect is not sufficient, or the coating film is yellowed by the anti-algal agent or the coating film strength is reduced. The effect on the physical properties of the coating film cannot be avoided, for example, and the improvement is strongly demanded.
ところで、本発明者等は、かねてより、含水酸化チタ
ンあるいは酸化チタンの粉末の機能性素材として高付加
価値化あるいは複合素材化等について種々検討を進めて
きているが、その過程で前記防藻性粉末の基体粒子とし
て適用について着目し、さらに検討を進めた。その結
果、これらの酸化チタン系もしくは含水酸化チタン系の
粉末は、その粒子表面に特定の金属成分を担持せしめる
ことによって、防藻効果の持続性の優れた防藻性付与材
として高付加価値化が図り得ること、とりわけ、近年、
熱帯ないしは亜熱帯地域のような高温、多湿域での建造
物の外壁にとみに繁殖し、塗装外壁面をいちじるしく汚
染したり、あるいは腐食させて耐久性をそこねるなど、
その解決が急がれているトレントポーリア(Trentepohl
ia)やアナシスティス(Anacystis)などによる汚染に
対してきわめて優れた防藻性を有することなどの知見を
得、本発明を完成したものである。By the way, the present inventors have been conducting various studies on high value-added or composite materials as a functional material of a powder of hydrous titanium oxide or titanium oxide for some time. Attention was paid to its application as a substrate particle of powder, and further studies were conducted. As a result, these titanium oxide-based or hydrated titanium oxide-based powders have a high value-added material as a material having a long-lasting anti-algal effect by allowing a specific metal component to be supported on the particle surface. What can be achieved, especially in recent years,
Propagating on the outer walls of buildings in high-temperature, humid areas such as tropical or subtropical areas, severely contaminating the painted outer wall, or corroding it and impairing durability,
The solution is urgently needed Trentepohl
ia), Anacystis, etc., have been found to have extremely excellent algal protection properties against contamination, and the present invention has been completed.
すなわち、本発明は、 1)含水酸化チタンもしくは酸化チタンの粒子表面に、
銅、亜鉛またはそれらの合金からなる金属の少なくとも
一種を担持してなることを特徴とする防藻性粉末。That is, the present invention provides: 1) the surface of a particle of hydrous titanium oxide or titanium oxide;
An anti-algal powder comprising at least one metal selected from the group consisting of copper, zinc and alloys thereof.
2)該金属が銅であることを特徴とする請求項1の防藻
性粉末。2) The anti-algal powder according to claim 1, wherein the metal is copper.
3)該金属が銅合金であることを特徴とする請求項1の
防藻性粉末。3) The anti-algal powder according to claim 1, wherein the metal is a copper alloy.
4)含水酸化チタンもしくは酸化チタンの粒子表面に、
銅、亜鉛またはそれらの合金の少なくとも一種を無電解
めっきして該金属を担持させてなることを特徴とする防
藻性粉末の製造方法。4) On the surface of the particles of hydrous titanium oxide or titanium oxide,
A method for producing an algal-proof powder, comprising electroless plating at least one of copper, zinc or an alloy thereof to carry the metal.
5)含水酸化チタンもしくは酸化チタンの粒子表面に、
銅、亜鉛またはそれらの合金の少なくとも一種を蒸着し
て該金属を担持させてなることを特徴とする防藻性粉末
の製造方法。5) On the surface of the particles of hydrous titanium oxide or titanium oxide,
A method for producing an algal-proof powder, comprising depositing at least one of copper, zinc or an alloy thereof and supporting the metal.
6)含水酸化チタンもしくは水酸化チタンの粒子表面
に、銅、亜鉛、またはそれらの合金の少なくとも一種を
圧密混合して該金属を担持させてなることを特徴とする
防藻性粉末の製造方法。6) A method for producing an alga-proof powder, comprising compacting and mixing at least one of copper, zinc, and an alloy thereof on the surface of hydrous titanium oxide or titanium hydroxide particles to carry the metal.
7)含水酸化チタンもしくは酸化チタンの粒子と銅、亜
鉛またはそれらの合金の少なくとも一種の化合物を混合
し、次いで還元して、該粒子表面に該金属を担持させて
なることを特徴とする防藻性粉末の製造方法。7) An anti-algae characterized in that particles of hydrous titanium oxide or titanium oxide and at least one compound of copper, zinc or an alloy thereof are mixed and then reduced to carry the metal on the surface of the particles. Method for producing conductive powder.
8)有機銅化合物、有機亜鉛化合物またはそれらの混合
物の少なくとも一種を加熱分解して、含水酸化チタンも
しくは酸化チタンの粒子表面に該分解金属を担持させて
なることを特徴とする防藻性粉末の製造方法。8) An anti-algal powder characterized in that at least one of an organocopper compound, an organozinc compound or a mixture thereof is thermally decomposed and the decomposed metal is supported on the surfaces of particles of hydrous titanium oxide or titanium oxide. Production method.
9)熱硬化性樹脂或いは熱可塑性樹脂に請求項1の抗菌
性粉末を配合して成ることを特徴とする防藻性樹脂組成
物。9) An anti-algal resin composition comprising the thermosetting resin or the thermoplastic resin and the antibacterial powder according to claim 1 mixed therein.
10)ゴムに請求項1の抗菌性粉末を配合して成ることを
特徴とする防藻性ゴム組成物および 11)ガラスに請求項1の防藻性粉末を配合して成ること
を特徴とする防藻性ガラス組成物である。10) A rubber composition comprising the antibacterial powder according to claim 1 and rubber; 11) a glass composition comprising the antialgal powder according to claim 1. It is an anti-algal glass composition.
本発明において、防藻性金属成分を担持する含水酸化
チタンもしくは酸化チタン(以下基体粒子という)とし
ては、いわゆるTiO2・nH2Oとして表わされる含水酸化チ
タンのほか、種々の水和二酸化チタンといわれるもの、
Ti:Oがほぼ1:2の割合にある通常の二酸化チタン、Ti:O
が種々の割合にあるようないわゆる低次酸化チタン、二
酸化チタンを主構成分とするチタン−ニッケル−アンチ
モン系、チタン−クロム−アンチモン系のほか、種々の
酸化チタン複合系顔料、合成ルチル顔料などである。こ
れらは平均粒径が通常0.01〜3μm望ましくは0.02〜1
μm、さらに望ましくは0.03〜0.4μmである。前記基
体粒子は、種々の製法によるものを使用し得るが、例え
ば(1)四塩化チタンを気相酸化分解して得られる二酸
化チタン粉状物、(2)硫酸チタン溶液、四塩化チタン
溶液あるいは有機チタン化合物溶液を、必要に応じ核形
成用種子の存在下に加水分解して得られる含水二酸化チ
タン(3)含水二酸化チタンを、焼成して得られる二酸
化チタン粉状物、(4)前記(1)、(2)、(3)で
得られる含水二酸化チタン沈澱や二酸化チタン粉状物を
加熱還元処理して得られる種々の低次酸化チタン粉状
物、さらには(5)前記(2)で得られる含水酸化チタ
ン沈澱に発色用金属成分を添加して加熱反応せしめた酸
化チタン複合系顔料などを挙げることができる。In the present invention, the hydrous titanium oxide or titanium oxide (hereinafter referred to as “substrate particles”) carrying an anti-algal metal component includes various hydrated titanium dioxides in addition to hydrous titanium oxide represented as so-called TiO 2 .nH 2 O. What
Normal titanium dioxide, Ti: O in a ratio of approximately 1: 2, Ti: O
Is present in various proportions, so-called low titanium oxide, titanium-nickel-antimony based on titanium dioxide, titanium-chromium-antimony based, titanium oxide composite based pigment, synthetic rutile pigment, etc. It is. These have an average particle size of usually 0.01 to 3 μm, preferably 0.02 to 1 μm.
μm, and more preferably 0.03 to 0.4 μm. As the base particles, those manufactured by various production methods can be used. For example, (1) titanium dioxide powder obtained by gas phase oxidative decomposition of titanium tetrachloride, (2) titanium sulfate solution, titanium tetrachloride solution or Hydrous titanium dioxide obtained by hydrolyzing the organic titanium compound solution in the presence of seeds for nucleation as necessary (3) powdered titanium dioxide obtained by calcining hydrous titanium dioxide; 1), (2), various low-order titanium oxide powders obtained by heating and reducing the hydrated titanium dioxide precipitate or titanium dioxide powder obtained in (3), and (5) the above (2) And a titanium oxide composite pigment obtained by adding a metal component for coloring to the precipitated titanium oxide precipitate obtained by the above and reacting by heating.
本発明において、基体粒子に担持される防藻性金属と
しては、金属銅、金属亜鉛の他に、Cu−Zn、Cu−Sn、Cu
−Al、Cu−Ag、Zn−Sn、Zn−Sn−Cu、Zn−Al−Cu−Mgの
ような銅および(または)亜鉛を主成分とする合金を挙
げることができ、それは単独であっても二種以上が担持
される場合であってもよい。前記金属成分の担持量は、
基体粒子の重量基準に対して、担持金属として通常0.00
1〜35%、望ましくは0.01〜30%である。担持量が前記
範囲により少なきにすぎると所望の防藻効果がもたれさ
れず、また前記範囲より多きにすぎるとコスト的に有利
でないばかりか、防藻性付与処理媒体への分散性や調色
性などが損なわれ易かったりする。本発明において、基
体粒子に防藻性金属を担持処理するには、種々の方法に
よって行なうことができるが、たとえば(1)前記防藻
性金属成分を含む金属イオン水溶液に、還元剤、さらに
必要に応じ緩衝剤、錯化剤、pH調節剤など種々の補助剤
を加えてめっき浴を構成し、このめっき浴中へ前記基体
粒子粉末を浸漬し、所定時間撹拌処理して前記金属イオ
ンを該粒子表面上に金属被膜として析出させるいわゆる
無電解めっき法で担持させる方法、なおこの場合に防藻
性金属の被膜析出に先立って、基体粒子粉末を予めたと
えばパラジウム、錫などの水溶液に浸漬させて該粒子表
面にそれらを付着せしめておくと、前記防藻性金属成分
の被膜析出が一層効率よく行なうことが可能であり、さ
らには密着性の良好な強固な被膜が形成され易い、
(2)真空蒸着装置中で防藻性金属を加熱溶解して蒸発
させ、該基体粒子表面に蒸着させる方法、(3)防藻性
金属成分を含有するアルキル金属化合物、有機金属錯化
合物などの種々の有機金属化合物を該基体粒子上で加熱
分解させて担持させる方法、(4)基体粒子粉末と、防
藻性金属粉末とを乾式又は湿式の圧密粉砕装置たとえば
ボルミル、エッジランナーミルなどに装填して圧密混合
し、該基体粒子表面上に防藻性金属を担持させる方法、
(5)前記含水酸化チタン沈澱に防藻性金属化合物を添
加し、含水二酸化チタン粒子表面に防藻性金属成分を担
持せしめ、次いでこのものを還元性ガス雰囲気中で加熱
処理することによって酸化チタン粒子表面に防藻性金属
を担持させる方法など、によって行なうことができる。
これらの方法のうち、前記(1)および(2)の方法
は、とりわけ基体粒子表面に防藻性金属が緊密に披着さ
れ易く、防藻性効果の発現性、持続性を一層高めること
ができる。なお前記(1)、(3)や(4)の担持処理
を行なう場合に、窒素ガスなどの不活性ガス雰囲気下で
なるべく酸化を防ぐようにして行なうのが望ましい。In the present invention, as the anti-algal metal supported on the base particles, metal copper, in addition to metal zinc, Cu-Zn, Cu-Sn, Cu
Alloys based on copper and / or zinc, such as -Al, Cu-Ag, Zn-Sn, Zn-Sn-Cu, Zn-Al-Cu-Mg; Also, two or more kinds may be supported. The supported amount of the metal component is
Usually 0.00 as a supporting metal based on the weight of the base particles.
It is 1 to 35%, preferably 0.01 to 30%. If the supported amount is less than the above range, the desired alga-proofing effect cannot be obtained, and if it is more than the above-mentioned range, not only is it not advantageous in terms of cost but also the dispersibility and toning in the algal-proofing treatment medium. The properties are easily impaired. In the present invention, the treatment for supporting the algal-proof metal on the base particles can be carried out by various methods. For example, (1) a reducing agent, and Various auxiliary agents such as a buffering agent, a complexing agent, and a pH adjusting agent are added to form a plating bath, and the base particles are immersed in the plating bath, and agitated for a predetermined time to remove the metal ions. A method of supporting the particles by a so-called electroless plating method of depositing a metal film on the surface of the particles. In this case, prior to the deposition of the film of the anti-algal metal, the base particles are immersed in an aqueous solution such as palladium or tin in advance. By adhering them to the surface of the particles, it is possible to more efficiently deposit the film of the anti-algal metal component, and it is easy to form a strong film with good adhesion.
(2) a method of heating and dissolving an anti-algal metal in a vacuum evaporation apparatus to evaporate it and deposit it on the surface of the base particles; (3) an alkyl metal compound containing an algal anti-metal component, an organometallic complex compound, and the like. A method in which various organometallic compounds are thermally decomposed and supported on the base particles, (4) the base particle powder and the algal-proof metal powder are loaded into a dry or wet compaction pulverizer such as a vol mill or an edge runner mill. And compacting and mixing, a method of supporting an algal-proof metal on the surface of the substrate particles,
(5) An anti-algal metal compound is added to the hydrous titanium oxide precipitate, the anti-algal metal component is supported on the surface of the hydrous titanium dioxide particles, and the titanium oxide is subjected to heat treatment in a reducing gas atmosphere. It can be carried out by a method of supporting an anti-algal metal on the particle surface.
Among these methods, the methods (1) and (2) are particularly easy to show the algal-proof metal on the surface of the base particles in a tight manner, and further enhance the expression and sustainability of the algal-proof effect. it can. When carrying out the above (1), (3) or (4), it is desirable to carry out the supporting treatment in an atmosphere of an inert gas such as nitrogen gas so as to prevent oxidation as much as possible.
本発明の防藻性粉末は、種々の藻類に対して有用なも
のであるが、前記藻類としては、たとえばトレントポー
リア ラゲニフェラ(Trentepohlia lagenifera)、ト
レントポーリア オドレータ(Trentepohlia odorat
a)、クロレラ ブルカリス(Chlorella vulgaris)、
オスシラトリア テヌイス(Oscillatoria tenuis)、
セネデスムス クァドリカウダ(Scenedesmus quadrica
uda)、クロロロビオン ブラウニィ(Chlorolobion br
aunii)、テトラシスティス パムパエ(Tetracystits
pampae)、アナシスティス モンタナ(Anacystis mont
ana)など種々の藻類が挙げられる。The algae-proof powder of the present invention is useful for various algae. Examples of the algae include Trentepohlia lagenifera and Trentepohlia odorat.
a), Chlorella vulgaris,
Oscillatoria tenuis,
Scenedesmus quadrica
uda), Chlorolobion br
aunii), Tetracystits
pampae), Anacystis mont
ana).
前記のようにして担持処理された防藻性粉末は、それ
自体公知の種々の防藻処理用資材として適用することが
できる。たとえば種々の水性系あるいは非水性系の塗料
組成物に添加したりするほか、樹脂成型物等に添加した
りすることができるものであり、得られる防藻付与材
は、種々の工業用や家庭用の構築物、施設、機器類等の
防藻効果を長期間にわたって付与する上できわめて好適
なものである。The algae-preventive powder supported and treated as described above can be applied as various known algae-treating materials. For example, in addition to being added to various aqueous or non-aqueous paint compositions, it can be added to resin moldings and the like. It is very suitable for imparting an anti-algal effect to buildings, facilities, equipment and the like for a long period of time.
以下に実施例および比較例を挙げて本発明をさらに説
明する。Hereinafter, the present invention will be further described with reference to Examples and Comparative Examples.
実施例1 二酸化チタン粉末(四塩化チタンを気相酸化分解して
得られたルチル型二酸化チタンであって表1の組成を有
するものを基体粒子として使用)10gを、20%フッ化水
素酸にて60分間浸漬撹拌した後、濾過、水洗、乾燥後、
内5gをまず塩化第一錫水溶液(0.5g/)1中に浸漬
し、次いで塩化パラジウム水溶液(0.5g/)1中に
浸漬することによって、二酸化チタン粒子表面にパラジ
ウムを付着させた。このようにして前処理された二酸化
チタンを、めっき浴液(硫酸銅70g/、ロッシェル塩35
0g/、水酸化ナトリウム100g/)500ml中に投入し、
ゆるやかに撹拌しながら液温が25℃になったところで、
37%ホルマリン液100mlを徐々に添加して、添加終了後
さらに同液温で90分間撹拌を継続して無電解めっき法で
該基体粒子表面に金属銅の被膜を析出させた。しかる後
に、二酸化チタン粒子を濾別水洗し、乾燥して目的とす
る防藻性粉末を得た。Example 1 10 g of titanium dioxide powder (using rutile-type titanium dioxide obtained by vapor-phase oxidative decomposition of titanium tetrachloride and having the composition shown in Table 1 as base particles) was converted to 20% hydrofluoric acid. After immersion and stirring for 60 minutes, filtration, washing with water, drying,
5 g of the solution was first immersed in an aqueous solution of stannous chloride (0.5 g /) 1 and then immersed in an aqueous solution of palladium chloride (0.5 g /) 1 to attach palladium to the surface of the titanium dioxide particles. The titanium dioxide pretreated in this manner is added to a plating bath solution (copper sulfate 70 g /, Rochelle salt 35).
0 g /, sodium hydroxide 100 g /)
When the liquid temperature reached 25 ° C with gentle stirring,
100 ml of a 37% formalin solution was gradually added, and after completion of the addition, stirring was further continued at the same solution temperature for 90 minutes to deposit a metal copper film on the surface of the base particles by electroless plating. Thereafter, the titanium dioxide particles were separated by filtration, washed with water, and dried to obtain a target alga-proof powder.
実施例2 表1の組成のルチル型二酸化チタン粉末70gを3%フ
ッ化水素酸500ml中に懸濁させ、常圧下で約30分間撹拌
した後、濾過、水洗、乾燥し、粉砕した。別に、1の
水に0.1gの硝酸銀を加え、アンモニア水を生成沈澱が再
溶解するまで加えた溶液を調整し、この中に上記粉砕物
50gを投入し、約60分間撹拌分散させた。次に、予め調
整した還元液(ぶどう糖45g、酒石酸4g、アルコール100
ml、水1)30mlを前記分散液中に徐々に加えた後、濾
液比抵抗が125μs以下になるまで濾過、洗浄し、引続
き乾燥、粉砕した。この粉砕物をメッキ液(硫酸銅70g/
、ロッシェル塩350g/、水酸化ナトリウム100g/)
5中に投入、ゆるやかに撹拌しながら液温が50℃にな
ったところで、37%ホルマリン液1を徐々に添加して
二酸化チタン粒子の表面に金属銅の被膜を析出させて、
濾過、洗浄、乾燥して目的とする防藻性粉末を得た。 Example 2 70 g of rutile-type titanium dioxide powder having the composition shown in Table 1 was suspended in 500 ml of 3% hydrofluoric acid, stirred at normal pressure for about 30 minutes, filtered, washed with water, dried and pulverized. Separately, 0.1 g of silver nitrate was added to 1 water, and a solution was added until aqueous ammonia was formed and the precipitate was re-dissolved.
50 g was added, and the mixture was stirred and dispersed for about 60 minutes. Next, a previously prepared reducing solution (45 g glucose, 4 g tartaric acid, 100 alcohol)
1) 30 ml was gradually added to the above-mentioned dispersion liquid, followed by filtration and washing until the specific resistance of the filtrate became 125 μs or less, followed by drying and pulverization. This pulverized product is plated with a plating solution (copper sulfate 70g /
, Rochelle salt 350g /, Sodium hydroxide 100g /)
When the liquid temperature reached 50 ° C. with gentle stirring, 37% formalin solution 1 was gradually added to deposit a metallic copper film on the surface of the titanium dioxide particles.
Filtration, washing and drying yielded the desired alga-proof powder.
実施例3 表1の組成のルチル型二酸化チタン粉末10gをガラス
シャーレ(直径65mm)中に広げ、それを真空蒸着装置
(日立製作所製、HUS−5GB)内に設置し、一方、電極間
に黄銅片を設置して外二酸化チタンの粒子表面に所定量
の黄銅を蒸着させて、目的とする防藻性粉末を得た。Example 3 10 g of rutile-type titanium dioxide powder having the composition shown in Table 1 was spread in a glass Petri dish (65 mm in diameter), and placed in a vacuum evaporation apparatus (HUS-5GB, manufactured by Hitachi, Ltd.). A piece was placed and a predetermined amount of brass was vapor-deposited on the surface of the titanium dioxide particles to obtain a desired algal-proof powder.
実施例1〜3に於て得られた防藻性金属を担持した粉
末は、夫々予め窒素ガスにて置換された容器内に収納し
た。これらの試料の物性を表2に示した。The powders supporting the antialgal metal obtained in Examples 1 to 3 were each stored in a container which had been previously replaced with nitrogen gas. Table 2 shows the physical properties of these samples.
試験例 実施例1、2および3で得られた防藻性粉末A1、A2お
よびA3を被験試料として、粒子表面に防藻性金属を担持
していない二酸化チタンA0をブランク試料として防藻性
試験を行なった。 Test Example The algae-proof powders A 1 , A 2 and A 3 obtained in Examples 1 , 2 and 3 were used as test samples, and titanium dioxide A 0 having no algae-proof metal on the particle surface was used as a blank sample. An anti-algal test was performed.
試験方法は、プロテオース寒天培地(Proteoseagar m
edium)10ml中へ銅または銅+亜鉛濃度が350ppmとなる
ように所定量の防藻性粉末を加え、試験管ミキサーで十
分撹拌し寒天中に懸濁後、直径6cmのシャーレに流し込
み、その表面に別途培養した緑藻の一種であるトレント
ポーリア(Trentepohlia lageniferaおよびTrentepohli
a odoreta)、クロレラ(Chlorella vulgaris),テト
ラシスティス(Tetracystis pampae)の藻体を塗布後、
20℃の恒温槽内で蛍光灯照射下放置して14日間培養し、
寒天上での生育度合いによる効果を判定した。この結果
を表3に示す。またボンコートEC−833(大日本インキ
化学製、アクリルスチレン系エマルジョン樹脂)使用
し、かつ前記被検試料を添加して調製されたエマルジョ
ン塗料(PVC40%、被検試料1.5重量%)を、ガラス面
(2cm×2cm)に塗布し、このガラス面に前記のトレント
ポーリア(Trentepohlia odoreta)藻体を塗布し、25℃
の恒温槽内で蛍光灯照射下放置して、1ケ月および3ケ
月後の生育度合による効果を判定した。その結果を表4
に示す。The test method was a Proteose agar medium (Proteoseagar
edium) Add a predetermined amount of anti-algal powder so that the concentration of copper or copper + zinc becomes 350 ppm in 10 ml, stir well with a test tube mixer, suspend in agar, and pour into a 6 cm diameter petri dish. Of green algae, Trentepohlia lagenifera and Trentepohli
a odoreta), Chlorella (Chlorella vulgaris), Tetracystis (Tetracystis pampae)
Incubate for 14 days in a 20 ° C constant temperature bath under fluorescent light irradiation,
The effect according to the degree of growth on agar was determined. Table 3 shows the results. An emulsion paint (PVC 40%, test sample 1.5% by weight) prepared by using Boncoat EC-833 (Acrylic styrene emulsion resin, manufactured by Dainippon Ink and Chemicals, Inc.) was added to the glass surface. (2 cm × 2 cm), the above-mentioned Trentepohlia odoreta algal cells were applied to the glass surface, and the temperature was 25 ° C.
Was left under a fluorescent lamp irradiation in a constant temperature bath, and the effect of the growth degree after one month and three months was determined. Table 4 shows the results.
Shown in
〔発明の効果〕 本発明によって得られる防藻性粉末は、基体粒子表面
に防藻性金属成分が強固に担持されたものであって、防
藻性効果の持続性の増大が期待し得るもので、ことにト
レントポーリアなどのような熱帯地方で急繁殖している
藻類に対して優れた殺藻性を奏するものであり、またこ
のものは基体粒子である二酸化チタン粉末本来の高隠ペ
イ力や高白色度など優れた光学特性、さらには分散性を
具備したものであり、広範な利用分野での防藻性付与処
理材として、またカラーイング材として甚だ工業的価値
の大きいものである。 [Effect of the Invention] The anti-algal powder obtained by the present invention is a powder in which an algal-proof metal component is firmly supported on the surface of the substrate particles, and an anti-algal effect can be expected to increase in sustainability. In particular, it exhibits excellent algicidal properties against algae that are rapidly breeding in the tropics, such as Trentporia, etc., and this is the high hidden power of titanium dioxide powder as the base particles. It has excellent optical characteristics such as high whiteness and high dispersibility, and is of great industrial value as a treatment material for imparting anti-algal properties in a wide range of applications and as a coloring material.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平2−225402(JP,A) 特開 平1−188423(JP,A) ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-225402 (JP, A) JP-A-1-188423 (JP, A)
Claims (12)
表面に、銅、亜鉛またはそれらの合金からなる金属の少
なくとも一種を担持してなることを特徴とする防藻性粉
末。(1) An anti-algal powder characterized in that at least one kind of metal composed of copper, zinc or an alloy thereof is supported on the surface of particles of hydrous titanium oxide or titanium oxide.
1の防藻性粉末。2. The algal-proof powder according to claim 1, wherein said metal is copper.
求項1の防藻性粉末。3. The anti-algal powder according to claim 1, wherein said metal is a copper alloy.
表面に、銅、亜鉛またはそれらの合金の少なくとも一種
を無電解めっきして該金属を担持させてなることを特徴
とする防藻性粉末の製造方法。4. A method for producing an algal-proof powder, characterized in that at least one of copper, zinc or an alloy thereof is electrolessly plated on the surface of particles of hydrous titanium oxide or titanium oxide to carry the metal. Method.
表面に、銅、亜鉛またはそれらの合金の少なくとも一種
を蒸着して該金属を担持させてなることを特徴とする防
藻性粉末の製造方法。5. A method for producing an algae-resistant powder, comprising depositing at least one of copper, zinc or an alloy thereof on the surface of particles of hydrous titanium oxide or titanium oxide and supporting the metal.
表面に、銅、亜鉛、またはそれらの合金の少なくとも一
種を圧密混合して該金属を担持させてなることを特徴と
する防藻性粉末の製造方法。6. A method for producing an algal-proof powder, characterized in that at least one of copper, zinc and their alloys is compacted and mixed on a surface of a particle of hydrous titanium oxide or titanium oxide to carry the metal. Method.
と銅、亜鉛またはそれらの合金の少なくとも一種の化合
物を混合し、次いで還元して、該粒子表面に該金属を担
持させてなることを特徴とする防藻性粉末の製造方法。7. A method comprising mixing particles of hydrous titanium oxide or titanium oxide with at least one compound of copper, zinc or an alloy thereof, reducing the mixture, and supporting the metal on the surface of the particles. A method for producing an algae-proof powder.
らの混合物の少なくとも一種を加熱分解して、含水酸化
チタンもしくは酸化チタンの粒子表面に該分解金属を担
持させてなることを特徴とする防藻性粉末の製造方法。8. An anti-algae characterized in that at least one of an organocopper compound, an organozinc compound or a mixture thereof is thermally decomposed and the decomposed metal is supported on the surfaces of particles of hydrous titanium oxide or titanium oxide. Method for producing conductive powder.
1の防藻性粉末を配合して成ることを特徴とする防藻性
樹脂組成物。9. An anti-algal resin composition comprising a thermosetting resin or a thermoplastic resin and the anti-algal powder of claim 1 mixed therein.
成ることを特徴とする防藻性ゴム組成物。10. An anti-algal rubber composition comprising a rubber and the anti-algal powder of claim 1 blended therein.
て成ることを特徴とする防藻性ガラス組成物。11. An algal-proof glass composition comprising a glass and the algal-proof powder of claim 1 blended therein.
とを特徴とする抗菌性塗料組成物。12. An antibacterial coating composition comprising the antialgal powder of claim 1 blended therein.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9523789A JP2640270B2 (en) | 1989-04-17 | 1989-04-17 | Algae-proof powder and method for producing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9523789A JP2640270B2 (en) | 1989-04-17 | 1989-04-17 | Algae-proof powder and method for producing the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02275721A JPH02275721A (en) | 1990-11-09 |
JP2640270B2 true JP2640270B2 (en) | 1997-08-13 |
Family
ID=14132155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9523789A Expired - Lifetime JP2640270B2 (en) | 1989-04-17 | 1989-04-17 | Algae-proof powder and method for producing the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2640270B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11323213A (en) * | 1998-05-13 | 1999-11-26 | Catalysts & Chem Ind Co Ltd | Seaweedproofing/seashellproofing composition and machine component for submarine use coated therewith |
-
1989
- 1989-04-17 JP JP9523789A patent/JP2640270B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH02275721A (en) | 1990-11-09 |
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