JPH06247820A - Antialgal-antifungal-antibacterial agent for admixture with cement - Google Patents
Antialgal-antifungal-antibacterial agent for admixture with cementInfo
- Publication number
- JPH06247820A JPH06247820A JP3868193A JP3868193A JPH06247820A JP H06247820 A JPH06247820 A JP H06247820A JP 3868193 A JP3868193 A JP 3868193A JP 3868193 A JP3868193 A JP 3868193A JP H06247820 A JPH06247820 A JP H06247820A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- antifungal
- antialgal
- silver
- antibacterial agent
- 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
Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、セメント混和用防藻・
防カビ・防菌剤に関するものである。更に詳しく述べる
ならば、本発明はセメントに混和し、それから作られる
コンクリート、モルタル、目地などの表面に生ずる藻、
カビ、および細菌の発生・繁殖を防止するセメント混和
用防藻・防カビ・防菌剤に関するものである。FIELD OF THE INVENTION The present invention relates to an algae-proofing agent for admixing cement.
The present invention relates to antifungal and antibacterial agents. More specifically, the present invention is an alga that is mixed with cement and is produced from the surface of concrete, mortar, joints, etc.
The present invention relates to an algae / mold / antibacterial agent for admixing cement, which prevents the growth and reproduction of mold and bacteria.
【０００２】[0002]
【従来の技術】従来、水硬性セメント材料の硬化物（コ
ンクリート、モルタル、目地など）の防藻、防カビ、防
菌剤としてはこれらの効果を有する有機系化合物が用い
られていた。しかし、有機系化合物は、耐久性に乏し
く、短時日中にその効果が失われるという欠点があっ
た。そこで、本発明者らは、上記欠点を克服するため
に、有機系化合物の代りに、銅化合物又は銀含有物質を
用いることを検討した。その結果銅化合物は、銀化合物
にくらべて価格が低く、しかも防藻、防カビ効果がすぐ
れているという長所を有するが、しかし、その多くは防
菌効果が、銀化合物のそれに劣り、更にセメントの凝結
硬化を阻害するという欠点があることを見出した。2. Description of the Related Art Conventionally, organic compounds having these effects have been used as anti-algal, anti-fungal and anti-bacterial agents for hardened materials (concrete, mortar, joints, etc.) of hydraulic cement materials. However, organic compounds have a drawback that they are poor in durability and lose their effect within a short time. Therefore, the present inventors have examined using a copper compound or a silver-containing substance instead of the organic compound in order to overcome the above-mentioned drawbacks. As a result, copper compounds have the advantages of lower price than silver compounds and superior anti-algal and anti-fungal effects, but most of them are inferior to silver compounds in antibacterial effect and moreover cement It has been found that there is a drawback that it inhibits the setting and hardening of.
【０００３】一方銀含有物質は、セメントの凝結硬化を
阻害せず、防菌効果もすぐれているが、その防藻・防カ
ビ効果は、銅化合物にくらべて劣り、所望のレベルの防
藻・防カビ効果を得るためには多量の銀含有物質を使用
しなければならず、しかもその価格が高いという問題点
があった。On the other hand, a silver-containing substance does not inhibit the setting and hardening of cement and has an excellent antibacterial effect, but its algae / mold prevention effect is inferior to that of a copper compound, and a desired level of algae / antifungal In order to obtain the antifungal effect, a large amount of silver-containing substance must be used, and its price is high.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、セメントの
凝結硬化を阻害することがなく、セメント材料に対し、
すぐれた防藻・防カビ・防菌効果を与えることができ、
しかも比較的安価な、セメント混和用防藻・防カビ・防
菌剤を提供しようとするものである。DISCLOSURE OF THE INVENTION The present invention provides a cement material which does not inhibit the setting and hardening of cement.
It can give excellent algae / mold / antibacterial effects,
Moreover, the present invention aims to provide a relatively inexpensive algae / mold / antibacterial agent for admixing cement.
【０００５】[0005]
【課題を解決するための手段】本発明者らは、銅化合物
のうち、亜酸化銅（Ｃｕ2 Ｏ）粉末が、セメントの凝結
硬化を阻害せず、すぐれた防藻・防カビ効果と、かなり
の防菌効果を有することを見出し、かつ、亜酸化銅粉末
に、銀含有物質を混合すると、すぐれた防菌効果が補強
されることを見出し、本発明を完成した。Among the copper compounds, the present inventors have found that cuprous oxide (Cu 2 O) powder does not inhibit the setting and hardening of cement and has an excellent algae / mold prevention effect. The present invention has been completed based on the finding that it has a considerable antibacterial effect, and that the addition of a silver-containing substance to cuprous oxide powder enhances the excellent antibacterial effect.
【０００６】本発明のセメント混和用防藻・防カビ・防
菌剤は、５０〜１００重量％の亜酸化銅粉末と、０〜５
０重量％の銀含有物質粉末とを含むことを特徴とするも
のである。The algae / mold / antifungal agent for admixing cement of the present invention comprises 50-100% by weight of cuprous oxide powder and 0-5.
It is characterized by containing 0% by weight of a silver-containing substance powder.
【０００７】[0007]
【作用】本発明に用いられる亜酸化銅は、酸化第一銅Ｃ
ｕ2 Ｏを意味し、一般に暗赤色または橙黄色粉末であ
る。亜酸化銅は、他の銅化合物とは異なり、セメントの
凝結硬化を阻害しないというすぐれた特徴を有している
が、この特徴は、本発明者らにより初めて見出されたも
のである。The cuprous oxide used in the present invention is cuprous oxide C
u 2 O, generally a dark red or orange yellow powder. Unlike other copper compounds, cuprous oxide has the excellent characteristic that it does not inhibit the setting and hardening of cement, but this characteristic was first discovered by the present inventors.
【０００８】本発明に用いられる銀含有物質は、銀を含
有している限りその種類に制限はない。しかし一般に
は、ＡｇＣｌ，Ａｇ3 ＰＯ4 、乳酸銀などのような銀化
合物、および銀をイオン交換して保有する物質などのよ
うに、水に不溶性、又は難溶性のものを用いることが好
ましい。ＡｇＮＯ3 ，ＡｇＦのような水溶性銀化合物も
使用し得るが、その効果の耐久性が比較的低いという問
題がある。The type of silver-containing substance used in the present invention is not limited as long as it contains silver. However, in general, it is preferable to use a silver compound such as AgCl, Ag 3 PO 4 , silver lactate, and the like, and a substance that is insoluble or sparingly soluble in water, such as a substance that ion-exchanges silver. Water-soluble silver compounds such as AgNO 3 and AgF can also be used, but there is a problem that the durability of the effect is relatively low.
【０００９】本発明の防藻・防カビ・防菌剤において、
亜酸化銅粉末は、５０〜１００重量％、好ましくは９０
〜１００重量％の含有率で、また銀含有物質粉末は、０
〜５０重量％、好ましくは０〜１０重量％の含有率で用
いられる。銀含有物質粉末の含有量が５０重量％をこえ
て多くなると、得られる製品の価格が高くなり、かつ、
相対的に亜酸化銅粉末の含有量が５０重量％未満になる
ため、防藻・防カビ効果が不十分になる。In the algae / mold / antibacterial agent of the present invention,
The cuprous oxide powder is 50 to 100% by weight, preferably 90%.
Content of ~ 100% by weight and silver-containing substance powder is 0
It is used in a content of -50% by weight, preferably 0-10% by weight. When the content of the silver-containing substance powder exceeds 50% by weight, the price of the obtained product becomes high, and
Since the content of the cuprous oxide powder is relatively less than 50% by weight, the algae / mold prevention effect becomes insufficient.
【００１０】本発明の防藻・防カビ・防菌剤において、
特に防藻・防カビ効果が高いことが要求され、防菌効果
に対する要求程度が低い場合は、銀含有物質の含有量を
低くすればよく、必要により０％にしてもよい。In the algae / mold / antibacterial agent of the present invention,
In particular, when high algae / mold prevention effect is required and the degree of antibacterial effect is low, the content of the silver-containing substance may be reduced, and may be 0% if necessary.
【００１１】亜酸化銅粉末と、銀含有物質粉末との混合
方法および装置には、それらが均一に、変質することな
く混合し得る限り何の制限もなく、従来の粉末混合方法
および装置を用いることができる。The method and apparatus for mixing the cuprous oxide powder and the silver-containing substance powder are not limited as long as they can be mixed uniformly and without deterioration, and the conventional powder mixing method and apparatus are used. be able to.
【００１２】本発明の防藻・防カビ・防菌剤を混和する
セメントには格別の制限はなく、ポルトランドセメン
ト、混合セメント、アルミナセメント、焼せっこうなど
に混和して使用することができる。There is no particular limitation on the cement in which the algae / mold / antifungal agent of the present invention is mixed, and it can be used by being mixed with Portland cement, mixed cement, alumina cement, gypsum and the like.
【００１３】本発明は、前記のように、防藻・防カビ・
防菌性を有する銅化合物のうち、亜酸化銅のみがセメン
トの凝結硬化を阻害せず、従って、セメントに混和使用
することができるという特性を有することを見出したこ
とに由来する。亜酸化銅のみがセメントの凝結硬化を阻
害しない理由については、未だ明確ではないが、下記の
ように推測される。The present invention, as described above, comprises algae / mold /
Among the copper compounds having antibacterial properties, it is derived from the finding that only cuprous oxide does not inhibit the setting and hardening of cement and therefore can be used in admixture with cement. The reason why only cuprous oxide does not inhibit the setting and hardening of cement is not clear yet, but it is speculated as follows.
【００１４】すなわち第二銅イオン（Ｃｕ2+）は、セメ
ントと急激に反応してち密な皮膜をセメント粒子の表面
に形成するため、これによりセメントの水和反応が妨害
され、セメントの凝結硬化が阻害される。しかし、亜酸
化銅（Ｃｕ2 Ｏ）の銅原子は一価（Ｃｕ+ ）であるた
め、セメントと上記のような皮膜形成反応を生ずること
がなく、従って、セメントの凝結硬化を阻害することが
ないものと思われる。That is, the cupric ion (Cu 2+ ) rapidly reacts with cement to form a dense film on the surface of the cement particles, which hinders the hydration reaction of the cement and causes the setting and hardening of the cement. Is hindered. However, since the copper atom of cuprous oxide (Cu 2 O) is monovalent (Cu + ), it does not cause the above film-forming reaction with cement, and thus inhibits the setting and hardening of cement. It seems that there is no.
【００１５】しかし、セメントが凝結硬化した後、この
硬化物中の亜酸化銅は、徐々に酸化されて第二銅イオン
（Ｃｕ2+）を放出し、すぐれた防藻、防カビ、防菌性を
発揮する。However, after the cement is set and hardened, the cuprous oxide in the hardened product is gradually oxidized to release cupric ion (Cu 2+ ), which is excellent in anti-algal, anti-fungal and anti-bacterial properties. Exert its abilities.
【００１６】本発明において、亜酸化銅粉末に、銀含有
物質粉末を混合併用することにより、両者の効果を補完
発揮させることができる。すなわち亜酸化銅粉末は、防
藻・防カビにすぐれた効果を発揮し、銀含有物質は、亜
酸化銅の防菌効果を補完することができる。In the present invention, the effect of both can be complementarily exhibited by mixing the cuprous oxide powder with the silver-containing substance powder. That is, the cuprous oxide powder exerts an excellent effect against algae and mildew, and the silver-containing substance can complement the antibacterial effect of cuprous oxide.
【００１７】[0017]
【実施例】本発明を下記実施例により更に説明する。実施例１〜３および比較例１〜２ （防藻性）実施例１〜３および比較例１〜２の各々にお
いて、表１に記載の成分をボールミルを用いて混合粉砕
し、平均粒径を約１μｍに調整した。普通ポルトランド
セメント１：川砂２：水０．６５のセメントモルタルに
上記粉体を、混合比率が１：１００になるように添加混
合し、この混合物を円板体（直径：３cm、厚さ：０．５
cm）に成形硬化させた。この硬化円板体を、屋外に１年
間曝露して、藻の発生状況を目視評価した。その結果を
表１に示す。The present invention will be further described with reference to the following examples. Examples 1 to 3 and Comparative Examples 1 to 2 (Algae resistance) In each of Examples 1 to 3 and Comparative Examples 1 and 2, the components shown in Table 1 were mixed and pulverized using a ball mill to obtain an average particle size. It was adjusted to about 1 μm. Ordinary Portland Cement 1: River sand 2: Water 0.65 The above powder was added and mixed to a cement mortar at a mixing ratio of 1: 100, and this mixture was made into a disc body (diameter: 3 cm, thickness: 0). .5
cm) and cured. The cured disc was exposed to the outdoors for 1 year, and the algae generation state was visually evaluated. The results are shown in Table 1.
【００１８】[0018]
【表１】 [Table 1]
【００１９】（防カビ性）また、上記円板体の各々を、
カビ抵抗性試験（ＪＩＳ−Ｚ−２９１１−１９７６）に
供した。但し、セメントモルタルのpHを、ＣＯ2 ガスに
より８．０に調整した。その結果、比較例１の円板体の
全面にカビの発生が認められた。しかし、実施例１〜３
および比較例２の円板体には、カビの発生は認められな
かった。(Antifungal property) Further, each of the above-mentioned disc bodies is
It was subjected to a mold resistance test (JIS-Z-2911-1976). However, the pH of the cement mortar was adjusted to 8.0 with CO 2 gas. As a result, generation of mold was recognized on the entire surface of the disc body of Comparative Example 1. However, Examples 1-3
The mold of Comparative Example 2 did not show mold.
【００２０】（防菌性）前記実施例１〜３および比較例
１〜２の各々セメントモルタルを硬化後粉砕し、そのpH
をＣＯ2 ガスにより８．０に調整し、これをハロー試験
（ＡＡＴＣＣＴＥＳＴ ＭＥＴＨＯＤ ９０−１９７
７）に供した。その結果を表２に示す。(Antibacterial property) The cement mortar of each of Examples 1 to 3 and Comparative Examples 1 and 2 was hardened and then crushed to obtain its pH.
Was adjusted to 8.0 with CO 2 gas, and this was adjusted to a halo test (AATCCTEST METHOD 90-197).
It was subjected to 7). The results are shown in Table 2.
【００２１】[0021]
【表２】 [Table 2]
【００２２】上記実施例および比較例より明らかなよう
に、本発明の防藻・防カビ・防菌性はセメント構造物に
対して、すぐれた防藻・防カビ・防菌性を示し、耐久性
の高いものである。As is clear from the above Examples and Comparative Examples, the anti-algae / mold / bacteriostatic property of the present invention shows excellent algae / mold / bacterial resistance to cement structures and is durable. It has high quality.
【００２３】[0023]
【発明の効果】本発明のセメント混和用防藻・防カビ・
防菌剤は、セメントの凝結硬化を阻害することなく、長
期間にわたって、すぐれた防藻・防カビ・防菌効果を発
揮することができ、高い実用性を有するものである。[Effects of the Invention] Algae / mold /
The antibacterial agent is capable of exerting excellent algae / mold / antibacterial effects over a long period of time without inhibiting the setting and hardening of cement, and has high practical utility.
Claims (1)
０〜５０重量％の銀含有物質粉末とを含む、セメント混
和用防藻・防カビ・防菌剤。1. A cuprous oxide powder in an amount of 50 to 100% by weight,
An algae / mold / antibacterial agent for admixing cement, which contains 0 to 50% by weight of a silver-containing substance powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3868193A JPH06247820A (en) | 1993-02-26 | 1993-02-26 | Antialgal-antifungal-antibacterial agent for admixture with cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3868193A JPH06247820A (en) | 1993-02-26 | 1993-02-26 | Antialgal-antifungal-antibacterial agent for admixture with cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06247820A true JPH06247820A (en) | 1994-09-06 |
Family
ID=12532033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3868193A Pending JPH06247820A (en) | 1993-02-26 | 1993-02-26 | Antialgal-antifungal-antibacterial agent for admixture with cement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06247820A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6235812B1 (en) | 1996-05-08 | 2001-05-22 | Basf Coatings Ag | Water-dispersible epoxy resins modified with vinyl acetate copolymers |
| US6752867B1 (en) * | 2002-11-29 | 2004-06-22 | Sinanen Zeomic Co., Ltd. | Antibacterial agent for concrete, concrete compositions and concrete products |
| US8083851B2 (en) | 2006-12-29 | 2011-12-27 | Sciessent Llc | Antimicrobial cements and cementitious compositions |
-
1993
- 1993-02-26 JP JP3868193A patent/JPH06247820A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6235812B1 (en) | 1996-05-08 | 2001-05-22 | Basf Coatings Ag | Water-dispersible epoxy resins modified with vinyl acetate copolymers |
| US6752867B1 (en) * | 2002-11-29 | 2004-06-22 | Sinanen Zeomic Co., Ltd. | Antibacterial agent for concrete, concrete compositions and concrete products |
| KR100821445B1 (en) * | 2002-11-29 | 2008-04-10 | 시나넨 제오믹 가부시키가이샤 | Antimicrobial agent for concrete, concrete composition and concrete article |
| US8083851B2 (en) | 2006-12-29 | 2011-12-27 | Sciessent Llc | Antimicrobial cements and cementitious compositions |
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