JPH06247807A - Sticking promoter for aquatic organism - Google Patents

Abstract

PURPOSE:To obtain a sticking promoter containing, as active ingredient, benzoic acid, its derivative, benzaldehyde or its derivative, etc., having such activity as to promote the implantation and growth of organisms sticking to underwater laid facilities, seaweed culturing nets, shellfish culturing facilities, etc. CONSTITUTION:This sticking promoter contains, as active ingredient, benzoic acid, its derivative, benzaldehyde or its derivative, of formula P [X<1> is formula II or III [Z<1> is OH, COOR<2> (R<2> is H or 1-20C alkyl), NH2, NO2, CN, CONH2 or 1-20C alkyl; m is 1-5]; Y is H or OR<1> (R<1> is H, 1-20C alkyl, etc.)] (e.g. benzoic acid); or a metal derivative of benzoic acid of formula IV [X<2> is formula II or V ((n) is 1-5; Z<2> is OH, NH2CN, etc.); M is metal; (r) is an integer corresponding to the valence of the metal]; or, a pyridine derivative of formula VI [Z<3> is OH, COOR<4> (R<4> is H or alkyl), CONH2 or alkyl].

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesion promoter for aquatic organisms that promotes bottom and growth of adherent organisms on underwater laid materials, seaweed aquaculture nets, shellfish culture facilities and the like.

[0002]

2. Description of the Related Art It is desirable that the adhered animals or plants breed promptly after immersion in a water revetment, a wave protection facility, a fish reef, etc. However, many of these layings are usually made of concrete, and even after the laying is installed, the adherent organisms do not settle and leave the substrate for a long time until the alkali elution from the structure is completely completed. . In order to prevent this, conventionally, plant fertilizer or the like is applied to the surface of the laid material to promote the growth of attached plants. However, this method does not promote the bottoming of attached organisms, and in seaweeds, nutrients are absorbed from the leaves, and there is no absorption from the roots, so its effect cannot be expected so much.

On the other hand, in the facility for seaweed aquaculture nets or bottomed aquaculture shellfish, it is necessary to immerse the facility in the season when the attached organisms settle and to settle and breed the organisms in a short period of time. On the other hand, it has been considered that chemical agents such as koji acid are used to promote the bottoming, but the effect is not sufficient and it is an important industrial problem.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a sufficient amount of aquatic organisms for a submerged laying material, a seaweed aquaculture net, a shellfish aquaculture facility, etc. within a short period of time after dipping them. It is to provide an adhesion promoter for aquatic organisms that promotes adhesion and growth.

[0005]

Means for Solving the Problems The present inventor has conducted earnest studies on the interaction between a physiological ecological region of a periphytic organism and a chemical substance with respect to an active substance which promotes the bottoming and reproduction of the periphytic organism in water. As a result, it was discovered that mainly benzoic acid and its various derivatives have an effective physiologically active action on the bottom and reproduction of underwater adherent organisms, and completed the invention of adhesion promoters based on these chemical substances. .

That is, the present invention comprises a substance represented by the following general formula (1) as an active ingredient, and includes benzoic acid and its derivatives and benzaldehyde and its derivatives.

[0007]

[Chemical 4]

The present invention also comprises a metal salt derivative of benzoic acid represented by the following general formula (2) as an active ingredient.

[0009]

[Chemical 5]

Examples of the metal M include monovalent metals such as Na, K and Cu, divalent metals such as Ca and Mg, and trivalent metals such as Al. In addition, Cr, Mn, Fe, Co, Ni
Metals such as can also be used.

The adhesion promoting effect can be further improved depending on the metal used. It is considered that the reason is that the attachment-related enzyme of the attachment organism generally requires a metal, and Cu, Ca and Fe are particularly preferable.

Further, the present invention uses a pyridine derivative represented by the following general formula (3) as an active ingredient.

[0013]

[Chemical 6]

The substances represented by the general formulas (1) to (3) according to the present invention exert their effects at a low concentration, and the surface area of the dip is usually 1 c.
It suffices if ^{2 to} 100 μmol is present per m ² . Also,
The substances represented by the general formulas (1) to (3) may be used alone or in combination of two or more.

In order to allow the adhesion promoter of the present invention to be present on the surface of the dip, the binder of the general formula (1) to
The substance of (3) and, if necessary, various additives dispersed and mixed are applied to the surface of the immersion product and dried to form a coating film. Examples of the binder substance include ordinary paint resins, such as butyral resin.

[0016]

In the present invention, when benzoic acid and its various derivatives are applied to various underwater installations, nets, etc. and immersed, the effect is rapid and the reason why the effect continues is that it exists on the surface of the coating film. It is speculated that benzoic acid and its various derivatives promote adhesion of algae spores and larvae of animal species, and also stimulate reproduction of adherent organisms.

[0017]

EXAMPLES Next, the present invention will be described more specifically with reference to examples.

Examples 1-25 and Comparative Examples 1-2 <Preparation of test paint>

[0019]

[Chemical 7] Vinyl chloride-vinyl isopropyl ether copolymer 25 parts by weight (BASF Laroflex MP-45) WW rosin 25 parts by weight dioctyl phthalate 1 part by weight colloidal silica gel 1 part by weight xylol 20 parts by weight methyl isobutyl ketone 8 parts by weight (total) 100 parts by weight) was charged into a mixer and sufficiently dispersed to prepare a test paint according to Example 1.

Furthermore, in place of 20 parts by weight of benzoic acid in the above-mentioned formulation components, 20 parts by weight of various derivatives shown in Tables 1 and 2 were used, and for the tests according to Examples 2 to 25 in the same manner as in Example 1. A paint was prepared.

[0021]

[Table 1]

[0022]

[Table 2]

In addition, a comparative coating composition having the following formulation containing no derivative component according to the present invention was prepared.

Comparative Example 1 Vinyl chloride-vinyl isopropyl ether copolymer 35 parts by weight (BASF Corporation Laroflex MP-45) WW rosin 35 parts by weight Dioctyl phthalate 1 part by weight Colloidal silica gel 1 part by weight Xylol 20 parts by weight methyl Isobutyl ketone 8 parts by weight (total 100 parts by weight)

Comparative Example 2 35 parts by weight of room temperature curing silicone rubber (KE-45-TS manufactured by BASF) 35 parts by weight of methylphenyl silicone oil (SH-510 manufactured by BASF) 1 part by weight of dioctyl phthalate Colloidal silica gel 1 Parts by weight xylol 20 parts by weight methyl isobutyl ketone 8 parts by weight (total 100 parts by weight)

<Adhesion acceleration test> Commercially available slate plate (300
A test plate having a size of × 500 mm) was fixed to an iron pipe frame at six places around the slate plate via a coated copper wire to obtain a test dipping plate. The test plate was coated with the coating material according to each of the above Examples and Comparative Examples so that the diameter was 100 mm and the dry film thickness was 100 μm, and was sufficiently dried for one day. The dried test plate was immersed at a depth of 1 m in the sea in Toyohama Port, Shizuoka Prefecture, and the extent and type of adherent organisms were investigated for 6 months (January to June).

The results are shown in Tables 3-5. Numerical values indicate the adhered area% of adherent organisms. In Tables 3 to 5, S: slime means plant: plant species: animal species, and-: adhesion rate 0 to 19% +: adhesion rate 20 to 49% ++: adhesion rate 50 to 69% ++ : Adhesion rate is 70 to 100%.

The control group in Table 5 shows the case where the test was performed on a vinyl chloride plate which was not painted.

[0029]

[Table 3]

[0030]

[Table 4]

[0031]

[Table 5]

[0032]

As can be seen from the above examples, the adhesion promoter for aquatic organisms according to the present invention promotes sufficient adhesion and growth of aquatic organisms within a short period of time, and has industrial utility value. It is expensive.

Claims (3)

[Claims] Claims: An adhesion promoter for aquatic organisms, which comprises as an active ingredient at least one of benzoic acid and its derivative or benzaldehyde and its derivative shown in. 2. [Chemical formula 2] An adhesion promoter for aquatic organisms, which comprises, as an active ingredient, at least one kind of a metal salt derivative of benzoic acid. Claim 3: An adhesion promoter for aquatic organisms, comprising as an active ingredient at least one of the pyridine derivatives represented by: