JPH0627043B2 - Disinfectant composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a fungicide composition. More specifically, for molds that exhibit excellent effects in various industrial fields, such as wood preservative and papermaking process preservative, or molds that easily grow in households such as toilets, bathrooms, and kitchens that are constantly humid. The present invention relates to a bactericidal composition that exhibits an excellent bactericidal effect.

<Prior Art and Problems Thereof> A cationic surfactant having bactericidal activity has been conventionally used as a bactericidal component. Examples of these compounds include alkyldimethylbenzylammonium salt, substituted benzalkonium salt, benzethonium salt, dialkyldimethylammonium salt and the like.

Bactericides are used in various fields. For example, it is in the field of wood preserving, in the paper manufacturing process, that is, in the field of slime control, or in the field of antifungal in home kitchens, toilets, bathrooms, and the like.

However, a cationic surfactant well known as a bactericidal component has not always exerted a sufficiently satisfactory effect in the above fields. That is, in wood preservative, the permeability into the interior of wood is poor, and in the surface coating treatment, the coated surface is removed by the surface treatment of the wood, and the bactericidal power is significantly reduced. Further, in the preservative in the paper making process, that is, in slime control, the cationic surfactant is adsorbed to the minute cellulose fibers, so that the bactericidal power is lowered. Furthermore, in the case of mildew prevention at home, "dust" and "soot" are attached to the target wall surface and the like, which also tends to cause a decrease in sterilizing power.

For this reason, cationic surfactants have not been used extensively as bactericides, despite being relatively cheap and readily available.

<Means for Solving Problems> Therefore, as a result of earnest studies to enhance the bactericidal effect of the cationic surfactant, the present inventor has found that the cationic surfactant, the inorganic peroxide and the inorganic peroxide are The inventors have found that the use of an acetic acid ester of a polyhydric alcohol as an activator in combination can remarkably enhance the bactericidal activity and eliminate the above drawbacks, and thus completed the present invention.

That is, the present invention contains a cationic surfactant, an inorganic peroxide and an acetic acid ester of a polyhydric alcohol as an activator of the inorganic peroxide as an essential component, and 1 part by weight of the cationic surfactant is used. The present invention provides a bactericidal composition, characterized in that the proportion of the inorganic peroxide is 0.1 to 10 parts by weight and the amount of acetic acid ester of polyhydric alcohol is 0.1 to 10 parts by weight.

The cationic surfactant used in the present invention is not particularly limited as long as it has bactericidal activity, and examples thereof include monocations such as alkyldimethylbenzylammonium salt, substituted benzalkonium salt, benzethonium salt and dialkyldimethylammonium salt. In addition to the compounds, polycationic compounds such as N-alkyl-N, N, N ', N', N'-pentamethyl-propylene ammonium salts can be mentioned.

Examples of the inorganic peroxide include sodium percarbonate, sodium perborate, sodium peroxytripolyphosphate, sodium peroxypyrophosphate, sodium peroxysilicate and the like.

As the inorganic peroxide activator, glucose pentaacetate, glucose tetraacetate, fructose pentaacetate, sucrose octaacetate,
Acetic acid esters of polyhydric alcohols such as sorbitan tetraacetate, sorbitol hexaacetate, mannitol hexaacetate, annitane tetraacetate, xylitopentaacetate, xylitane triacetate and pentaerythritol tetraacetate are used.

In the bactericidal composition of the present invention, from the viewpoint of storage stability and bactericidal effect, 0.1 to 10 parts by weight of an inorganic peroxide is used per 1 part by weight of a cationic surfactant, and a polyvalent activating agent is used. The acetic acid ester of alcohol is used in the range of 0.1 to 10 parts by weight. Further, the mixing ratio (weight ratio) of the inorganic peroxide and the activator is preferably 10/1 to 1/10.

The bactericidal composition of the present invention is usually formulated as a solid substance such as powder, granules and tablets, and is diluted with water before use. The concentration at that time varies depending on the target object, but is usually 5
0 to 1000 ppm.

Of course, cationic surfactants, inorganic peroxides, and acetic acid esters of polyhydric alcohols as the activators of the inorganic peroxides are separately formulated, and when they are used, they are diluted together in water. Applying is also included in the usage of the composition of the present invention.

<Action / Effects> The bactericidal composition of the present invention has various advantages such as preserving wood, controlling slime in the paper making process, and preventing mildew at home. The mechanism of exerting the bactericidal effect is not clear, but it is irreversible to the cell membrane of bacteria due to the coupling effect of the organic peracid generated from the inorganic peroxide and the acetate ester of polyhydric alcohol and the cationic surfactant. It is thought that this is due to causing such degeneration.

<Examples> Next, the bactericidal composition of the present invention will be specifically described with reference to Examples used for sterilization in various fields, but the bactericidal composition of the present invention is limited to the use of these examples. Not a thing.

Example 1 Japanese cypress sapwood was cut into cubes of 3 cm × 3 cm × 3 cm, and the wood pieces obtained by dipping the present invention product in various concentrations for 60 minutes were designated as Sample A. Separately, a piece of wood precisely cut into a depth of 2 mm from the surface of the piece of wood subjected to the immersion treatment is prepared as a standard B.
And Specimens A and B were inoculated with the wood-rotting fungus Kawaratake, and the weight loss of the decayed wood pieces on the untreated wood pieces after 3 months was measured and the antiseptic effect was expressed as a percentage.

Example 2 White water having a cellulose concentration of 2% was circulated by a pump at 30 ° C. for 14 days, and 0.1 ml of white water was daily taken with a sterilized pipette, diluted with 10 ml of sterilized ion-exchanged water, and the diluted solution was 0.2 ml. The bactericidal effect was measured by applying the solution to a meat extract medium, culturing at 27 ° C. for 6 days, and counting the number of bacterial colonies in the plate Shearley.

Example 3 Assuming the environment of a bathroom, a 3 cm × 3 cm chip of mortar wall is immersed in the remaining water in the bathroom for 24 hours, and then taken out and sprayed with a spore suspension of Aspergilus niger.
Incubate at 7 ° C. and 90% relative humidity for 10 days (use black mold on the surface of the mortar wall chip, which is propagated all over the mold). After that, prepare the drug solution and add 0.2 per chip.
Disperse ml and incubate for 3 days under the same conditions. Then, the efficacy of the drug solution was determined by the following evaluation method.

Evaluation criteria

Claims (2)

[Claims] 1. A cationic surfactant, an inorganic peroxide, and an acetic acid ester of a polyhydric alcohol as an activator of the inorganic peroxide as an essential component, and 1 part by weight of the cationic surfactant. A disinfectant composition comprising 0.1 to 10 parts by weight of an inorganic peroxide and 0.1 to 10 parts by weight of an acetic acid ester of a polyhydric alcohol. 2. The disinfectant composition according to claim 1, wherein the mixing ratio (weight ratio) of the inorganic peroxide and the acetic acid ester of a polyhydric alcohol is 10/1 to 1/10.