JPS6052727B2 - Sea breath clinging organism control agent - Google Patents

Description

[Detailed description of the invention] TECHNICAL FIELD This invention relates to an agent for controlling sea breath attached organisms.

More specifically, this invention relates to the general formula R-O-(CH.

). The present invention relates to a sea breath insect control agent containing an aliphatic oxypropylamine represented by NH, (wherein R means an alkyl group or alkenyl group having 8 to 18 carbon atoms) or an acid addition salt thereof as an active ingredient.

In factories such as thermal power plants and steel mills that use seawater, sea creatures such as mussels, barnacles, hydrophiles, and bryozoans adhere to the cooling water systems, reducing their functionality.

Among them, purple mussels adhere to each other in layers and grow at a fast rate. For this reason, the mussels attached to the lowest layer cannot take in sufficient nutrients and dissolved oxygen and die. As the mussels die, the byssus threads attached to the wall become weaker, and they become more susceptible to water pressure and water flow.
14--' は、]目4-NAKO1次、しこいめ；↓It blocks the flow of water and reduces its function. In addition, aquaculture nets, ropes, and other fixed nets used in the increasingly popular aquaculture fisheries for yellowtail and other fish are kept in water for long periods of time.
Sea-breath organisms such as mussels are attached to them, causing various problems.

For example, bryozoans, barnacles, sea squirts, diatoms, etc. adhere to these nets and lobes, but if a large amount of fast-growing mussels adhere to them, the passage of seawater is obstructed, resulting in a lack of dissolved oxygen for aquaculture fishing. This can also cause nets to sink or break, resulting in damage such as loss of aquaculture fishing. Alternatively, the damage caused by sea bream beetles to imported logs stored in seawater storage is severe.

Funaku beetles are wood-boring marine organisms, and there are ovoviparous and oviparous species. Both lead a planktonic life for a certain period of time before attaching to the wood surface, and then invade the wood by digging a long cone-shaped hole. However, it only communicates with the outside world through a water pipe protruding from a small hole. When external conditions become unfavorable, the water pipe is withdrawn into the hole, and the hole is closed with a calcareous pallet to protect against the intrusion of foreign objects and attacks by other organisms. Once that happens, it is not easy to exterminate. This time, as a solution to such problems, we have discovered that aliphatic oxypropylamine represented by the above general formula or its acid addition salt significantly inhibits the growth of the above sea-breath organisms.

Aliphatic oxypropylamines have traditionally been used as disinfectants, algaecides, corrosion inhibitors, etc., and are known to have activity against bacteria, mold, and algae; Mussels, barnacles, hydrobugs, bryozoans, boas, etc. have significantly different living functions from fungi and algae, and as far as the inventors of this invention know, aliphatic oxypropylamine or The physiological effects of the acid addition salt are completely unknown.
By adding a small amount of aliphatic oxypropylamine or its acid addition salt used in the present invention to a seawater system during the adhesion and growth of sea breath adhering organisms, the growth can be suppressed and adhesion can be prevented.

Specific examples of preferable aliphatic oxypropylamine used in this invention include 3-octyloxypropylamine, 3-(2-ethylhexyloxy)propylamine,
Examples include 3-dodecyloxypropylamine, 3-stearyloxypropylamine, 3-oleyloxypropylamine, and the like.

In addition, the acid addition salts of aliphatic oxypropylamine used in this invention include hydrochloride, acetate, formate, butyrate, oleate, and aliphatic oxypropylamine as described above.
Examples include nitrates, sulfates, phosphates, etc. Thus,
The present invention provides a composition suitable for various purposes such as liquid, gel, paste, etc., containing a compound of the general formula as an active ingredient.

For example, by adding it to a seawater cooling system in the form of a solution, it is possible to prevent the above-mentioned damage to sea breath-fouling organisms, and
As a liquid spreadable preparation, fishing nets can be dipped and applied to prevent aquatic organisms from adhering to it. In addition, as a gel-like preparation with elasticity and flexibility, this can be suspended in water in a lumber yard to gradually elute the active ingredient to prevent wood beetles from attacking the wood, or it can be used as a paste. It can be applied to wood or pressure-injected to prevent the adhesion of sea bream beetles. When the aliphatic oxypropylamine or its acid addition salt according to the method of the present invention is added to a seawater cooling system as a solution preparation, the amount added is generally 0.03 to 3 pp per seawater flow rate.
m may be injected for 1 to 24 hours a day.

The amount to be added may vary depending on the type of compound, as its physiological activity against sea-breath organisms varies.

In addition, if the amount of sea-breath attached organisms is particularly large, it is desirable to increase the amount. When used as a solution preparation, aliphatic oxypropylamine or its acid addition salt is preferably diluted with water, methanol, ethanol, dimethylformamide, methylcellosolve, or the like.

When used as a coating agent for fishing nets, etc., the compound of the present invention is mixed with a natural resin, synthetic resin or synthetic rubber emulsion, plasticizer, solvent, coloring pigment, etc. as appropriate, and dissolved.
It is formulated by operations such as dispersion and kneading.

The natural resins, synthetic resins, or synthetic rubber emulsions mentioned here include rosin, ball oil, chlorinated rubber, vinyl resins such as vinyl chloride and vinyl acetate, acrylic resins and ethyl acrylate-styrene copolymer resins, and methyl acrylate. Examples include synthetic resin emulsions such as vinyl acetate copolymer resins, and synthetic rubber emulsions such as styrene-butadiene copolymer rubbers, acrylonitrile-butadiene copolymer rubbers, and methyl methacrylate-butadiene copolymer rubbers. Examples of plasticizers include dioctyl phthalate, dibutyl phthalate, tricresyl phosphate, trioctyl phosphate, etc., and examples of solvents used include water, alcohol, xylene, kerosene, methyl isobutyl ketone, dimethyl formamide, and methyl cel. The surfactants used for dispersion or emulsification using Solv etc. are polyoxyethylene alkyl ethers, polyoxyethylene alkyl esters, polyoxyethylene sorbitan esters, polyoxyethylene-polyoxypropylene block. Examples include copolymers, alkyl betaines, alkyltrimethylammonium salts, and the like.

In addition, in the case of a gel preparation, the gel containing the active ingredient of the present invention may include, for example, 3 to 2 weight percent of the active ingredient, 5 to 2 weight percent of the polymeric substance forming the gel, and organic Solvent 0
The formulation is formulated by containing ~1% by weight and the remainder water, or by further containing 0 to 1% by weight of a surfactant.

Such a gel-like preparation can be made into any shape and size such as a rod, sphere, or cube, placed in a net, basket, plastic bag with appropriate holes, or a vibrator, and placed in a wood storage area. It can be used by hanging it in a suitable place between rafts or by immersing it in seawater.

Next, when the compound of the present invention is injected into wood to prevent the attack of sea bream beetles, a solution prepared by dissolving or dispersing the compound of the present invention in a solvent, or a mixture of the compound of the present invention and a natural resin, oily synthetic resin, or synthetic rubber. A vehicle, plasticizer, surfactant, and solvent are added, and in some cases, a color pigment is added, and a preparation is used which is dissolved, dispersed, emulsified, dispersed, or sufficiently kneaded.

The aliphatic oxypropylamine, which is the active ingredient of this invention, is
It may be used in combination with effective control agents that can be used in the field,
For example, it may be used in combination with a drug that is highly effective against sea-breathing organisms such as barnacles.

Examples of sea breath insect control agents other than the active ingredients of the present invention include tri-substituted tin compounds, copper naphthenate, organic acid copper such as copper oleate, dithiocarbamate salts, and dithiocarbamates such as tetramethylthiuram disulfide. Examples include system compounds. Next, the present invention will be explained with reference to Examples, but the present invention is not limited thereto. Note that in the following, % and parts mean % by weight and parts by weight, respectively. Example 1 A test plant was used in which a test net was placed in a PVC pipe with an inner diameter of 10 h and a length of 2 m.
During the day, seawater was passed in a one-time flow (water flow rate of 3 tons/hour each), each chemical was injected with a chemical pump, and the attached organisms (
The amount of mussels, barnacles, water bugs, and bryozoans) was compared with the blank.

The results are shown in Table 1. Example 2 The following two antifouling agents for fishing nets were prepared.

Formulation example 1 3-dodecyloxypropylamine 15% rosin
5% chlorinated rubber
5% xylene
75% formulation example 23-stearyloxypropylamine 15% dioctyl phthalate
2% polyoxyethylene sorbitan ester 5% polyoxyethylene nonylphenol 3% xylene
20% acrylonitrobutadiene latex 50% water
A polyethylene aquaculture net was coated with 5% of the above antifouling agent by dipping, dried, and immersed in the sea at a depth of 1.5 m to examine the adhesion of fouling organisms. The results are shown in Table 2.

Example 3 Compound 1 (2) of the present invention, 5 parts of methanol, 1 part of surfactant, and 15 parts of polyacrylamide were mixed together and jelly-formed with 69 J parts of water. 10k9 was placed in a plastic basket and the adhesion of sea bream was observed. It was hung in a seawater lumber yard during the period.

That is, 4m. Square rafts are vertically assembled into two rows of 4 at intervals of 0.5 TrL, and between them, three jelly products of the present invention are hung at intervals of 47 TL, 1 rrLj and 1.5 m from that position.
Table 3 shows the results of an X-ray photograph examination of the degree of adhesion and perforation by the funaku beetles two months after hanging the test panel. Example 4 Preparation for wood injection containing the compound of the present invention as an active ingredient (2
Example) was prepared.

Formulation example 1 3-dodecyloxypropylamine 10% polybutene 5% rosin
3% xylene
82% Formulation Example 23-dodecyloxypropylamine acetate 10% copper acetate
5% water
87% of the above chemical solution is JIS-A93O
The mixture was injected into a piece of wood (30 cm x 6 cm x 2 cm) according to the method of 1. After being immersed in the sea for one year, the effectiveness against sea bream beetles was determined using X-ray photography.

Claims (1)

[Claims] 1 General formula R-O-(CH_2)_3NH_2 (in the formula R
means an alkyl group or alkenyl group having 8 to 18 carbon atoms) or an acid addition salt thereof as an active ingredient.