JP3341127B2 - Formulation of an aquatic organism adhesion inhibitor or adhesion promoter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in incorporating an aquatic organism adhesion-preventing agent or adhesion-promoting agent into an object or a coating material used in contact with seawater or freshwater. In this case, the ability to prevent or promote adhesion of aquatic organisms to an object or a covering material used in contact with seawater or freshwater can be maintained for a long period of time.

[0002]

2. Description of the Related Art Seawalls, wave-breaking blocks, quays, piers, piers, powerhouses and other structures, ship bottoms, fishnets, fences such as oil fences, ikesu, marine buoys, light buoys, buoys, etc. During long-term contact, various aquatic organisms such as barnacles, mussels, sea anemones, sea scallops, sea squirrels, ascidians, and other aquatic organisms such as alga and diatoms adhere to the surface, and inhabit.

[0003] Attachment of aquatic organisms, for example, in the case of ship bottoms, deceleration due to increase in water flow resistance and weight; in structures such as power plants, obstruction of water intake and drainage; Damages to oil fences, marine buoys, light buoys, buoys, etc. have caused various problems such as sinking and breakage due to weight increase.

[0004] As a measure for preventing the aquatic organisms from adhering as described above, a paint containing an organotin compound such as tributyltin oxide or triphenyltin oxide is applied to the bottom of a ship, a fish net, a fence, a fish net, a sea buoy, or a light. It has been widely practiced to apply it to surfaces such as buoys, buoys, seawalls and other structures, and to formulate them directly into raw materials for manufacturing such objects. However, organotin compounds are eluted in seawater or freshwater, causing pollution of water quality and sludge, causing various malformations in fish and shellfish that ingested organotin compounds, and the accumulation of organic tin compounds in the body of fish and shellfish. When tin compounds are ingested by humans through the food chain, they have a serious adverse effect on the human body, and the use of organotin compounds has been banned.

[0005] Therefore, instead of toxic organotin compounds, they have low toxicity to living organisms and have been used as pesticides, fungicides, fungicides, etc., benzothiazoles, thiophthalimides, sulfonylpyridines, isothiocyanates. Attempts have been made to use organic sulfur compounds and urea-based organic nitrogen compounds, such as marine species, and to use so-called biological repellents that repel their attachment without killing aquatic organisms. When using the substance, a method of simply blending it as it is in a coating material such as paint and applying it to the surface of the various objects described above which is used in contact with seawater or fresh water, or constituting the aforementioned object Fish net, rope,
Methods of manufacturing fences, structures, and the like have been conventionally employed.

[0006] However, when the biofouling inhibitor is simply blended into the paint as it is or added to the material constituting the object, the biofouling inhibitor elutes into water in a relatively short period of time, and its effect is reduced. The phenomenon that it does not last long, or conversely, the biofouling inhibitor is firmly confined in the coating film or the object, the amount present on the surface decreases, and almost no biofouling inhibiting ability is shown from the beginning There is a drawback that the adhesion of aquatic organisms cannot be prevented well.

On the other hand, structures such as wave-dissipating blocks and rocky reefs;
Water purification facilities located on the bottom or in the water of water quality environments such as marshes, ponds, rivers, and the sea; algae, fungi,
Protozoa and other various aquatic organisms mentioned above are positively attached and inhabited on the surface thereof, and the water purification function of these aquatic organisms is effectively utilized to purify water, An environment suitable for breeding is often created. In that case, the surface can be coated with a paint containing a bioadhesion promoter to promote the attachment and inhabitation of useful aquatic organisms, or their structures and equipment can be made from materials containing the bioadhesion promoter. Attempts have also been made to produce.

However, also in this case, since the bioadhesion promoter is simply added to the coating material such as paint, or is simply added as it is to the material constituting the above-mentioned construction, the bioadhesion promoter is used. It elutes into water in a relatively short period of time, and its effect is not long-lasting, or on the contrary, the bioadhesion promoter is firmly confined in the coating film or object and the amount present on the surface is small, and the bioadhesion promoting ability From the beginning, and there is a drawback that adhesion of aquatic organisms cannot be promoted.

[0009]

An object of the present invention is to prevent a biofouling inhibitor or biofouling promoter from being lost from an article or a coating film due to elution in a short period of time, etc., and to have a long-lasting ability to prevent or adhere to aquatic organisms. And a method of making such an object or coating material.

[0010]

Means for Solving the Problems The inventors of the present invention have continued their studies to achieve the above object, and found that an aquatic organism adhesion-preventing agent or adhesion promoter is simply added as it is to a coating material such as paint or an object. Alternatively, if an aquatic organism's anti-adhesion or adhesion promoter is supported on a fibrous, granular, or powdery carrier and supported in a paint or an object, the coating or the object will have good long-term adhesion to the coating or the object. The inventors have found that an anti-adhesion ability or a bio-adhesion promoting ability is imparted and completed the present invention.

Accordingly, the present invention is a method of allowing an aquatic organism's adhesion inhibitor or adhesion promoter to be carried on a fibrous, granular or powdery carrier and contained in an object or a coating material. Further, the present invention is an object or a coating material characterized by containing an aquatic organism adhesion-preventing agent or adhesion promoter carried on a fibrous, granular, or powdery carrier.

In the present invention, as the anti-adhesion agent for aquatic organisms, there are known conventionally known anti-adhesion and anti-adhesion agents for aquatic organisms, which are highly safe, have little adverse effect on aquatic organisms and human beings, and are less likely to cause environmental pollution. Any of them can be used and is not particularly limited. Examples of such an adhesion inhibitor or adhesion repellent include the aforementioned benzothiazoles, thiophthalimides, sulfonylpyridines, organic sulfur compounds such as isothiocyanates, organic nitrogen compounds such as urea and nicotinamide, and marine compounds. Extracts from plants such as sesquiterpenes such as xanthatin, polyphenols such as catechin, sugar-acylated glycosides, and complex lipids, which are reported to be able to avoid adherence of organisms, can be given [ "Chemistry and Industry", Vol. 44, No. 4, pp. 666-
P. 670 (1991); "Colorants" 64 (7), p 464-
470 (1991)].

The type of the aquatic organism adhesion promoter used in the present invention is not particularly limited, and any substance known to have a useful aquatic organism adhesion promoting effect can be used. For example, when an iron compound is included in concrete structures such as seawalls and quay walls, aquatic organisms adhere to the surface of those structures, forming a sintered lime layer called so-called porcelain porcelain, and fish and shellfish. It is known to provide an environment suitable for inhabiting and breeding, and therefore, in the present invention, such an aquatic organism adhesion promoter can be used.

[0014]

According to the present invention, an aquatic organism adhesion-preventing agent or adhesion-promoting agent is used in a fibrous or granular form.
Alternatively, it is necessary to use the carrier supported on a powdery carrier. The type of carrier when (hereinafter simply referred to as carrier), etc. is Ru may be appropriately selected depending on the kind of the object or coating material to contain the anti-adhesion agent or adhesion promoters. Soshi
Thus, the carrier of the present invention has a point that it can easily carry an aquatic organism adhesion inhibitor or adhesion promoter, that it is easy to handle, that it can be easily incorporated into a material constituting a coating material or an object, and the like. Preferred from the point. In particular, a fibrous carrier is preferable because it can not only carry a function of supporting an adhesion inhibitor or an adhesion promoter but also reinforce a coating material or an object containing the same. The carrier is preferably insoluble in water but highly hydrophilic, and in this case, the capillarity (wetting action) of the carrier causes the aquatic organism's adhesion-preventing or adhesion-promoting agent to be gradually dissolved in water. To maintain good aquatic organism adhesion-preventing ability or adhesion-promoting ability over a long period of time.

Further, the size of the carrier may be appropriately adjusted according to the type of the object or coating material into which the carrier is blended, and the like.
For example, when used in paints and materials for forming fibers, it is preferable to use fine ones so as not to impair the film-forming properties and fiber-forming properties. It is preferable that the size is set to a size that can also function as a reinforcing fiber.

Examples of the carrier include, but are not limited to, cellulosic fibers such as cotton, hemp, and pulp; synthetic fibers such as polyester, nylon, polyolefin, and vinylon; zeolites and other porous minerals. ,
Activated carbon, incinerated ash, charcoal, water-swellable polysaccharides such as konjac powder and the like can be mentioned. Among them, cellulosic fibers are rich in hydrophilicity, and the anti-adhesion agent or adhesion promoter of aquatic organisms carried on it is gradually transferred to the surface of the coating film or the surface of the object by its capillary action, thereby preventing or adhering the adhesion. It can effectively show the promotion ability,
Further, it is desirable because it has a reinforcing effect.

The object according to the present invention includes all objects used in contact with water in a water quality environment such as seawater or fresh water, and includes, for example, seawalls, wave-dissipating blocks, quays, piers, piers, and power generators. And water purification facilities and equipment, ship bottoms, fish nets, fences, ikesu, marine buoys, light buoys, buoys, ropes, pollution control membranes for civil engineering, and the like. Further, the coating material in the present invention includes a paint, a material for forming a film-like or sheet-like coating layer on the surface of an object, or a surface coating material for forming a thicker surface coating layer. In the present invention, an aquatic organism anti-adhesion agent supported on a carrier is blended into a raw material for producing such an object to produce an anti-adhesion agent-containing object, or the carrier is supported on a carrier. An anti-adhesion agent may be incorporated into the coating material, and the coating material may be used to coat the surface of the above-mentioned object used in an aqueous environment. Also, the case where the adhesion promoter for aquatic organisms is contained in the object or the coating material may be carried out in the same manner as in the case of the adhesion inhibitor.

Further, the types, shapes, structures, and the like of the materials constituting the above-mentioned object and the covering material used in the water environment are not particularly limited, and may be the same as those conventionally known. In particular, when an object is produced by mixing an aquatic organism adhesion inhibitor or an adhesion promoter carried on a carrier into a material constituting the object, the aquatic organism adhesion to at least the surface of the object or a portion close to the surface is considered. It is necessary that an inhibitor or adhesion promoter be present.

The present invention is illustrated by, but not limited to, the figures. FIG. 1 is a view showing an oil fence 1 manufactured according to the present invention, wherein 2 is a float, 3 is a hanging film, and 4 is a rope. FIG. 2 shows the oil fence 1 of FIG.
FIG. 3 is a cross-sectional view showing a detailed structure of a drooping film 3 used in FIG. The drooping film 3 of the oil fence 1 is provided on both sides of the base cloth 5 with an aquatic organism adhesion preventing agent (for example, a phenol-binding substance contained in kashiwa or eucalyptus) carried on a carrier 6 made of cellulose powder. The coating material layer 8 is made of a vinyl chloride resin or a synthetic rubber containing the substance 7). In the oil fence 1 of FIG. 1, since the coating material layer 8 containing the aquatic organism adhesion preventing agent 7 supported on the carrier 6 is provided on both surfaces of the hanging film 3, the aquatic organisms adhere to the hanging film 8. Is prevented for a long time, the sinking of the oil fence 1 due to the weight increase, the floating 2, the drooping film 3,
The rope 4 is prevented from being damaged and the like, and the function as the oil fence can be kept good for a long time.

FIG. 3 shows a ship bottom paint 9 containing an aquatic organism antifouling agent 7 supported on a carrier 6.
This is an example in which the coating is applied to a coating. Further, FIG. 4 is a view showing a concrete tetrapod 11 for revetment. The tetrapot 11 uses a concrete raw material in which an aquatic organism adhesion promoter 12 supported on a carrier 6 made of cellulose fiber is blended. Due to the production, attachment and inhabitation of aquatic organisms on the surface of the tetrapod are promoted, and a favorable habitat environment for fish and the like is provided.

[0021]

According to the present invention, a high aquatic organism adhesion-preventing ability or adhesion-promoting ability can be maintained for a long period of time for objects and coating materials used in contact with seawater or freshwater. In particular, when a fibrous carrier is used as the carrier, it is possible to maintain the supporting function of the adhesion preventing agent or the adhesion promoter and to reinforce the coating material or the object containing the compound. When a hydrophilic material is used as the carrier, the capillary action (wetting action) of the carrier allows the aquatic organism's adhesion inhibitor or adhesion promoter carried on the carrier to be gradually diffused into water, As a result, it is possible to maintain a high ability to prevent or promote adhesion of aquatic organisms over a long period of time. In addition, when the aquatic organism's adhesion inhibitor or adhesion promoter is a volatile substance, the loss of the substance due to its volatile diffusion can be suppressed by supporting the substance on a carrier, and the effect can be maintained for a long time. it can.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of an oil fence according to the present invention.

FIG. 2 is a cross-sectional view showing a detailed structure of a drooping membrane using an aquatic organism adhesion preventing agent used for the oil fence of FIG.

FIG. 3 is a diagram showing the bottom of a ship to which the ship bottom paint of the present invention has been applied.

FIG. 4 is a view showing a tetrapod containing an aquatic organism adhesion promoter carried on a carrier.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Oil fence 2 Floating 3 Hanging film 4 Rope 5 Base cloth 6 Carrier 7 Aquatic organism adhesion preventing agent 8 Coating material layer 9 Ship bottom paint 10 Bottom of ship 11 Tetrapot 12 Aquatic organism adhesion promoting agent

Claims (2)

(57) [Claims] 1. A method in which an aquatic organism adhesion-preventing agent or adhesion-promoting agent is supported on a fibrous, granular or powdery carrier and contained in an object or a coating material. 2. An object or a coating material containing an aquatic organism adhesion-preventing or adhesion-promoting agent carried on a fibrous, granular or powdery carrier.