JPH06183914A - Microbicidal composition for industrial use - Google Patents

Abstract

PURPOSE:To obtain an industrial microbicidal composition capable of preventing the putrefaction and staining of an industrial material or product caused by fungi and bacteria by the addition of a small amount of the composition to the material or product and free from discoloration of the industrial material and product with the microbicidal agent. CONSTITUTION:This industrial microbicidal composition contains zinc-2- pyridionethiol-1-oxide and one or more compounds selected from 2,3,3-triiodoallyl alcohol, diiodomethyl-p-tolylsulfone and 3-iodo-2-propynylbutyl carbamate or contains methyl 2-benzimidazolecarbamate and 2,3,3-triiodoallyl alcohol as active components.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an industrial sterilizing composition, and more particularly to an industrial sterilizing composition for preventing various industrial materials and products from being deteriorated by various fungi such as mold.

[0002]

2. Description of the Related Art Decay and contamination caused by various fungi such as mold are produced in many industrial products such as adhesives, paints, wall coverings, paper, pulp, flooring materials, sizing agents, and silicone sealing agents.
It happens in various lattex etc. Conventionally, strong bactericides such as organic mercury, organic tin, and chlorinated phenols have been used to prevent contamination by fungi such as mold. However, these fungicides are toxic to humans, livestock, animals such as fish,
It is no longer used due to environmental pollution due to accumulation.

[0003]

On the other hand, a bactericide having a low toxicity to humans, livestock, fish, etc. has a drawback that it has a weak bactericidal activity against molds and fungi that deteriorate industrial materials and products. Further, when the amount of the bactericide added is increased, the industrial product is colored and the product value is reduced.

[0004]

The present inventors have completed the present invention as a result of various studies on silicon sealing agents in order to solve the above-mentioned problems. The present invention is a zinc
2-Pyridinethiol-1-oxide (A) and 2,3
3-triiodoallyl alcohol, diiodomethyl-p
-Containing at least one of tolylsulfone and 3-iodo-2-propynylbutylcarbamate (B), or methyl 2-benzimidazole carbamate and 2,3,3-triiodoallyl alcohol as active ingredients. It is a characteristic industrial sterilizing composition.

Zinc-2-pyridinethiol-1-oxide (hereinafter abbreviated as ZPT) used in the present invention is a highly safe substance used in shampoo, but it is expensive and added in a large amount. In this case, there are often the disadvantages that the industrial products in question are colored. 2,3,3-triiodoallyl alcohol (hereinafter abbreviated as TIAA), diiodomethyl-p-tolylsulfone (hereinafter abbreviated as DIMTS), 2-iodo-2-propynylbutyl carbamate (hereinafter abbreviated as IPBC) is a wood-rotting fungus, It is known as an antiseptic agent for mold and the like. These substances contain iodine, and when added in large amounts, they often have the drawback of causing coloration in the industrial products in question.

Methyl 2-benzimidazole carbamate (hereinafter abbreviated as BICA) is effective in applications in which relatively limited mold contamination is problematic, such as for agricultural and horticultural use. , Fungal concentrations such as Mucor (100-500pp
In m), there is a problem that no effect can be expected. Further, ZPT and BICA are hardly soluble in ordinary organic solvents such as alcohol and glycol solvents, and are difficult to use as liquid agents.

The ratio of the active ingredient in the industrial sterilizing composition of the present invention is (A) :( B) = 10-9 in the case of ZPT (A) and TIAA, DIMST and / or IPBC (B).
0:90 to 10% by weight, preferably 20 to 80:80
Is about 20% by weight. In the case of BICA and TIAA, BICA: TIAA = 10 to 90: 90: 10% by weight, preferably 20 to 80: 80/20% by weight.

The industrial sterilizing composition of the present invention comprises two or two types.
Although more than one kind of active ingredient may be mixed and used as it is,
Diluents such as talc, pyrophyllite, mica, kaolinite, montmorillonite, attapulgite, vermiquiurite and the like are preferably used after being formulated into powders, wettable powders, suspensions and the like. It is also effective to use a surfactant in order to improve water dispersibility. The following compounds may be mentioned as surfactants. Fatty acid salt, alkyl sulfate ester salt, alkyl benzene sulfonate salt, alkyl naphthalene sulfonate salt, dialkyl sulfone succinic acid ester salt, alkyl phosphate ester salt, naphthalene sulfonate formalin condensate, polyoxyethylene alkyl sulfate ester salt, acylmethyl taurine Anionic surfactants such as sodium acidate and polycarboxylic acid.

Nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene alkylphenol ether, polyoxyethylene fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, glycerin fatty acid ester and oxyethyleneoxypropylene block polymer. . Cationic surfactants such as alkyl amine salts, quaternary ammonium salts, polyoxyethylene alkyl amines, etc. Zwitterionic surfactants such as alkyl betaines and alkyl glycines.

When the industrial bactericidal agent of the present invention is produced, powders and wettable powders can be obtained by crushing and mixing like ordinary pesticides. The suspension agent is preferably wet-milled by a ball mill, a roll mill or the like. In order to improve the stability of water suspension property, a sizing agent such as CMC-Na, guar gum or xanthan gum may be used. The industrial bactericide of the present invention is used by adding 10 to 2000 ppm, preferably 50 to 1000 ppm to the target industrial product.

[0011]

【Example】

Formulation Examples 1 to 4 Table 1 shows the components of the formulation of the present invention. Wet milling was performed for 5 hours using a ball mill to obtain suspension agents of Formulation Examples 1 to 4. The numbers in the table mean parts by weight.

[Table 1] DIMTS: Amical 48 (manufactured by San Abbott) is used, IPBC: Troisan P-100 (manufactured by Troy Chemical Co.), Day Mall N: Anionic surfactant manufactured by Kao Corporation.

Comparative Formulation Examples 1 to 5 In the same manner as in Formulation Examples 1 to 4, suspensions of Comparative Formulation Examples 1 to 5 were obtained. The ingredients of the comparative formulation are shown in Table 2.

[Table 2]

Example 1 (a) Preparation of modified silicone sealing material 100 parts of modified silicone polymer, 35 parts of di- (2-ethylhexyl) phthalate and 100 parts of calcium carbonate were heated under reduced pressure at 120 ° C./1 to 2 mmHg for 2 hours. Mixed. After heating, the mixture was cooled under reduced pressure, and 2 parts of an equimolar reaction product of dibutyltin oxide and di- (2-ethylhexyl) phthalate and 1000 p of each antifungal component having each composition ratio shown in Table 3 were added.
pm and remix under vacuum for 15 minutes. Then, it was injected into the tube by a filling machine to obtain a sealing material. Push the sealing material from the filling machine onto the Teflon sheet,
Sheets were made using rolls. This sheet is 3 cm
It was cut into × 3 cm square and evaluated by performing a fungicide resistance test.

(B) Antifungal Test Method (Preparation of Test Bacteria) 5 platinum loops of each spore cultured on 10 ml of sterilized water containing 0.005% of dioctyl sodium sulfosuccinate dissolved therein were collected and the container was vigorously collected. The mixture was shaken to sufficiently disperse the spores, and the filtrate obtained by rubbing the contents with sterilized gauze was used as a single spore suspension (test bacteria). Clados Polium, Clados Poliodes, Alternaria
Four types of fungi were tested: Alternata, Mucor Spinescence, Rhodotorula rubra. (Test method) Peptone 10 g, glucose 40 g, agar 2
5 g and 1000 ml of ion-exchanged water were dissolved by heating, and 60 ml of the single spore suspension (test bacteria) was mixed with 600 ml of sterilized medium, and then 25 ml was put into a dish to prepare a plate medium. On a solidified plate medium, a test piece (3 cm × 3 cm square) in which the test bacterial solution was sprayed on the surface of the silicon sealing material sheet was placed, and cultured in a furan vessel at 28 ± 2 ° C. for 4 weeks. The test results are shown in Tables 3 to 6.

Judgment Criteria Indication of fungal resistance Judgment of mycelium Judgment 5: No growth of fungus is observed in the test piece Judgment 4: Bacterial growth area of test piece is 1/4 or less Judgment 3: Bacterial growth area of test piece is 1/4 to 1/2 Judgment 2: Bacteria growth area of test piece is 1/2 to 3 / 4 Judgment 1: The growth area of the bacteria of the test piece is 3/4 or more In addition, about the thing with a halo, the size of the halo (minor axis cm x major axis cm) is shown in parentheses. In addition, “(none)” indicates that there is no halo.

Test results for Cladosporium

[Table 3]

Test results for Alternaria

[Table 4]

Mucor test results

[Table 5]

Test results of Rhodotorula

[Table 6]

EXAMPLE 2 1 kg of acrylic emulsion paint and 1000 p of bactericide
pm was added. After storing this paint at 40 ° C. for 3 months, the viable cell count was measured. In addition, during storage, 1 ml of a rotten acrylic emulsion paint was added every 10 days. The test results are shown in Table 7. Viable cell count method: The viable cell count in acrylic emulsion was measured by the pour plate culture method. Bacteria: Broth agar medium, cultured at 33 ° C for 48 hours. Yeasts and molds: Sabouraud agar medium, cultivated at 28 ° C for 7 days.

[0021]

[Table 7]

[0022]

The industrial bactericidal composition of the present invention is added to industrial products such as adhesives, silicone sealing agents, papers, pulps, etc. at a low dose so as not to cause mold and various fungi. Corrosion and pollution can be prevented.

Continuation of front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location A01N 37:02) (A01N 43/54 31:02) (72) Inventor Michio Watanabe Bird Kanazawa-ku, Yokohama-shi, Kanagawa Hamamachi 14-29 Permachem Asia R & D Center Co., Ltd.

Claims (1)

[Claims] 1. Zinc-2-pyridinethiol-1-oxide (A) and 2,3,3-triiodoallyl alcohol, diiodomethyl-p-tolylsulfone, 3-iodo-2-propynylbutyl carbamate (B). An industrial sterilizing composition comprising one or more of them, or methyl 2-benzimidazolecarbamate and 2,3,3-triiodoallyl alcohol as active ingredients.