JPS59212408A - Pest-combatting composition for industrial purpose - Google Patents

Abstract

PURPOSE:The titled composition that is composed of a combination of a heavy metal salt of dithiocarbamic acid and 2-methylisothiazolin-3-one or its metal complex, thus showing stable and duratable combatting effects and further increased activity even in reduced concentration. CONSTITUTION:The objective composition contains, as active ingredients, a heavy metal salt of dithiocarbamic acid, which is known as an antifungal in the fields of agriculture and horticulture such as mangasese ethylenebis-dithiocarbamate, and 2-methylisorhiazolin-3-one of the formula (R is H, halogen) or its metal complex such as 5-chloro-2-methylisothiazolin-3-one magnesium chloride salt, preferably at a ratio of 1/50 to 1/0.02. The resultant composition shows remarkably increased activity in such a low concentration as each of them shows no activity in the separated state and the duration is also improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an industrial pest control composition, and more particularly to a dithiocarbamic acid heavy metal base represented by 2 (wherein R represents hydrogen or... rogen atom). - An industrial pest control composition characterized by containing methylisothiazolin-6-one or a metal complex compound thereof as an active ingredient.

Many industrial bactericides and algaecides have been developed, but
Its uses include, for example, industrial water and white water for paper manufacturing.

Paints, ship bottom paints, cutting oils, polymer emulsions, etc. are used in a wide range of products, but there are limits to their effectiveness from the beginning and they may not work against some organisms. Expected effects may not be obtained due to the acquisition of resistance by organisms to chemicals, etc. (2) For example, in the case of industrial water, the heat exchange function may be reduced, or the generated potential difference may accelerate corrosion of the equipment, and in the case of white water used in paper manufacturing, the product may deteriorate. Not only does the quality deteriorate, but continuous operation is obstructed due to paper breakage and other obstacles in the papermaking process, leading to a decline in production efficiency and causing great economic damage. Therefore, there is a strong desire to establish measures for controlling industrial pests that have stable, long-lasting effects and wide applicability. Given this current situation, it is still being proposed to apply new drugs one after another as one method for the purpose of monitoring the evolution of pests, acquiring resistance, and avoiding it.

There are natural limits in terms of the number and types of chemicals and their performance, and the variety of types of industrial pests, and on top of that, during use, there is a possibility that two or more types of chemicals may be used at the same time ( /C resistant organisms are easily generated, and because it contains complex biological contents that are difficult to elucidate, P
I haven't decided yet. Therefore, the present inventors conducted repeated research to establish a method for controlling industrial pests that avoids the above-mentioned problems and can withstand a wide range of applications.
However, R represents hydrogen or... rogen atom. The present invention has been completed based on the discovery that compositions containing the 2-methylisothiazolin-6-one compounds shown in ) or their metal complex salt compounds as active ingredients exhibit stable and long-lasting pesticidal effects.

Dithiocarbamate type metal salt I''i+ is widely used as a fungicide in the fields of agriculture and horticulture, and is known to exhibit excellent effects.And because it has low toxicity to humans and livestock, it is used industrially. It is widely used as a water treatment agent such as disinfectant, algaecide, and slime control agent, but although its effect is long-lasting, the effect is somewhat slow, so there are some drawbacks in this regard. .

2-Methylinothiazolin-6-one compound or its metal complex salt compound is a compound with excellent bacteriostatic activity and is active.
It is also known to be sustainable. However, the effective concentration varies depending on the type of organism, and the duration of the effect also varies, for example, from 1 month to 3 months, which poses a problem in terms of the stability of the effect. Furthermore, as mentioned above, when used, there are problems due to the occurrence of resistant organisms and changes in the types of organisms.

The compositions of the present invention are significantly potentiated at low concentrations where one compound of the present invention exhibits no activity when used alone.

It also has improved durability. Examples of the acid moiety of the dithiocarbamate of the present invention include alkylene bisdithiocarbamic acid, monofunctional monoalkyldithiocarbamate, and monofunctional dialkyldithiocarbamate, and examples of the heavy metal salt moiety include zinc, manganese, copper, and iron. . And for these heavy metal salts, other heavy metals A71S
Even salts in which zinc or copper is coordinated to manganese bisdithiorubamate are included in the present invention. Furthermore, it may be a mixed salt that is bonded to an alkyl-7-bisdithio-rubamate moiety and/or a monofunctional mono- or alkyl-dithio-rubamate moiety via a heavy metal such as zinc. Specifically, 7 is a mixed salt in which an ethylenebisdithiocarbamate site and/or a dimethyldithiocarbamate site are bonded via zinc. In addition, examples of the 2-methylisothiazolin-3-one compounds generally indicated above include 5-chloro-2-methylisothiazolin-3-one and 2-methylisothiazolin-3-one, and also form metal complex salts with these. Examples of metal salts that can be used include zinc chloride, calcium chloride, magnesium chloride, magnesium nitrate, iron chloride, aluminum chloride, copper nitrate, and zinc sulfate.

The active ingredients of the present invention can be blended in any ratio as desired, but preferably 1.5° to 1°0.02
range is desirable. The composition of the present invention may be used alone or may be used simultaneously with a commonly used carrier. Forms include aqueous solutions, emulsions, microcapsules, and PACE! - It can be used as either granules or powder, and the carrier used is, for example, water.

Organic solvents, inorganic compounds, etc. can be used. Together with these active ingredients there may be other active ingredients 2, such as fungicides.

It is also possible to use them in combination with insecticides, gravel killers, and herbicides, and it is also possible to add auxiliary agents such as surfactants, emulsifiers, rust preventives, pigments, and spreading agents. Stabilizers may also be added to stabilize the active ingredient.

Next, the present invention will be specifically explained with reference to the following examples.

1) 5-chloro-2-methylinothiazolin-6-one, magnesium chloride/rum salt and manganese ethylenebisdithiocarbamate 11 2) 5-chloro-2-methylinothiazolin-6-one, chloride Magnesium salt and zinc-coordinated manganese ethylene bisdithiocarbamate in a 1:1 ratio 3) 5-chloro-2-methylinothiazolin-6-one magnesium chloride salt and ethylene bisdithiocarbamic acid and/or dimethyldithiocarbamic acid 4) 5-chloro-2-methylinothiazolin-6'-one magnesium chloride salt and zinc monomethyldithiocarbamate (11) 5) 2-methyl 6) 2-Methylisothiazolin-6-one, magnesium chloride salt and zinc-coordinated manganese ethylenebisdithiocarbamate in 11 7) ) 5-chloro-2-methylisothiazolin-6-one, magnesium nitrate and manganese ethylenebisdithiocarbamate in a ratio of 1:2 8) 5-chloro-2-methylisothiazolin-3-one, magnesium nitrate and dimethyldithiocarbamine 9) 5-chloro-2-methylisothiazolin-3-one, magnesium chloride salt and 2-methylinothiazolin-3-one, magnesium chloride/rum salt (1.2)
:1) and manganese ethylene bisdithiocarbamate f:
2:: 10) 5-chloro-2-methylisothiazolin-6-one magnesium chloride salt 11) 2-methylisothiazolin-3-one magnesium chloride salt 12) Manganese ethynebiscythiocarnocuminate 16
) Mixed salt in which ethylene bisdithiocarnocumic acid and/or dimethyldithiocarbamic acid are bonded via zinc Example 2 Add the stock solution (Chlorella sp.
p.

compl mainly composed of Scendesmus spp.
Add ex).

Urea was added thereto as a nitrogen source in a ratio of 1:0.59. Chemicals were applied at a predetermined concentration to this, and the algae growth was fed as a side dish over time. The results are shown in the table below.

Note) - in the table indicates no growth of algae.

The inspector found some algae growth.

+ indicates growth of algae.

shows.

Example 6 Mold that occurs in industrial water and exhibits harmful effects.

Its killing power against bacteria was tested.

Po containing the active ingredient at the concentration of the test drug (5 ppm)
Various suspensions shown in the table below (approximately 106Ce I Is/d
) to inoculate by spraying.

The cells were cultured in an incubator at 25° C. for 24 hours, and the presence or absence of growth was examined.

Note) - in the table means complete inhibition.

Soil is almost blocked.

Ten is growth.

shows.

Example 4 Aggregates stuck in the cooling water pipes of a factory were collected, and a certain amount of this was added to a culture solution (o, i% urea water) at the concentration listed in 1. Add the invention composition and stir,
The cells were cultured at 20-30°C for 10 days and investigated.

Main) - in the table is completely blocked.

Most of the masters prevented it.

Ten is partially grown.

Ten is growing up.

shows.

patent applicant Tokyo Organic Chemical Industry Co., Ltd.

Claims (1)

[Claims] At least one dithiorubamic acid heavy metal salt (provided that
R represents hydrogen or a halogen atom. ) shown in 2-
An industrial pest control composition comprising methylinothiacyly/-3-ono or a metal complex salt thereof as an active ingredient.