KR100946557B1 - Composition for promoting attachment and growth of marine organisms to be applied to marine artificial structure containing alkyl lactate - Google Patents

Abstract

A composition is disclosed that can effectively promote the attachment and growth of marine organisms when applied to existing marine structures, including alkyl lactates.

Alkyl lactate, ethyl lactate, butyl lactate, marine structures, marine life, engraftment, artificial reefs

Description

Composition for promoting attachment and growth of marine organisms to be applied to marine artificial structure containing alkyl lactate}

The present invention relates to compositions, methods, and coatings that effectively promote the growth of marine organisms in marine structures.

Marine structures are artificially installed in the ocean, and one of them, the artificial reefs, is installed in the soft seas and fosters seaweeds necessary for spawning fish, crustaceans, shellfish, etc., protecting, nurturing, and multiplying hatching and fry. Provide a suitable environment for the growth of fish and shellfish.

The materials of artificial reefs currently used mainly are cement, iron, ceramics, fibers, waste fibers, synthetic resins (polyethylene, polypropylene, polyvinyl chloride, etc.), waste tires, and the like.

Cement marine structures were initially difficult to marine marine organisms because they released harmful substances that interfered with marine organisms. On the other hand, in the case of the structure made of synthetic resin, the surface tension of the surface is low, the marine organisms have a problem that the living organism spores slip easily due to the seawater flow when it is difficult to grow.

An object of one embodiment of the present invention is to solve the above problems.

An object of one embodiment of the present invention is to allow marine organisms to easily attach to and grow well in marine structures including artificial reefs.

It is an object of one embodiment of the present invention to provide a coating that is formed on the surface of an oceanic structure to promote marine life.

In order to achieve the above object, the marine organism growth promoter composition for applying marine structures according to an embodiment of the present invention, it characterized in that it contains an alkyl lactate as an active ingredient.

In addition, the surface coating method of the marine structure according to an embodiment of the present invention, (a) mixing 5 to 45% by weight of the binder and 10 to 50% by weight of the solvent;

(b) adding 5 to 45 wt% of alkyl lactate to the mixture obtained in step (a) and mixing the mixture;

(c) applying the mixture of step (b) to an offshore structure; And

(d) drying the composition applied in step (c) to form a film.

In addition, the surface coating film of the marine structure according to an embodiment of the present invention is characterized in that it comprises an alkyl lactate.

The present invention is effective to increase the fishery resources by effectively promoting the attachment and growth of marine organisms to marine structures including artificial reefs that are habitats of marine organisms.

Hereinafter, the present invention will be described in more detail, but it is only for illustrating the present invention, but the scope of the present invention is not limited thereto.

As used herein, "engraftment" means that benthic organisms adhere to and grow on artificial objects.

As used herein, the term "ocean structure" means a structure that is artificially added to the ocean, and includes an artificial reef, a sofa, and the like. This includes all structures consisting of cement, steel, ceramics, fibers, waste fibers, synthetic resins, waste tires, and wastes.

As used herein, "artificial reef" is one of marine structures artificially manufactured and introduced into the ocean, and refers to a structure that provides a habitat for organisms inhabiting the ocean, such as seaweed or shellfish. This includes all structures consisting of cement, steel, ceramics, fibers, waste fibers, synthetic resins, waste tires, and wastes.

Marine life growth promoter composition for applying marine structures according to an embodiment of the present invention is characterized in that it contains an alkyl lactate as an active ingredient. The alkyl lactate is preferably a C _1-6 lower alkyl lactate. Especially, it is preferable that they are 1 type or 2 types of alkyl lactates chosen from ethyl lactate and butyl lactate.

In the above composition, the alkyl lactate is preferably contained in an amount of 5 to 45% by weight of the total composition. If the alkyl lactate is less than 1% by weight, the engraftment ability of marine organisms is insufficient. If the alkyl lactate is more than 45% by weight, the mixing properties and long-term storage properties of other components are lowered. However, the content of the alkyl lactate should be at least 5% by weight in order to add up to 100% by weight of the total weight of the composition. In this respect, the alkyl lactate is more preferably included in an amount of 5 to 30% by weight.

It is preferable that the said composition further contains a binder and a solvent other than the alkyl lactate which is the said active ingredient.

Synthetic resin or natural resin may be used as the binder. Specifically, the resin may be one or two or more selected from vinyl resin, urethane resin, rubber chloride resin, phthalic acid resin, alkyd resin, epoxy resin, phenol resin, melanin resin, acrylic resin, fluorine resin, silicone resin, and rosin. The binder is preferably included in an amount of 5 to 45% by weight of the total composition. If the content of the binder is less than 2% by weight, the adhesion of the paint is lowered. If the content of the binder is more than 45% by weight, the compatibility with other compositions is lowered, and the viscosity of the composition is too high, making it difficult to apply to marine structures. However, in order for the sum of the weight percent of the total composition to be 100 wt%, the content of the binder should be 5 wt% or more. In this respect, the content of the binder is preferably 5 to 30% by weight.

As the solvent, any organic solvent may be used. For example, an aromatic hydrocarbon solvent such as xylene, a ketone solvent such as methyl ethyl ketone or methyl isobutyl ketone, or a cellulsolve solvent such as cellulsolve acetate may be used. The solvent is preferably included in an amount of 10 to 50% by weight of the total composition. If the solvent is less than 10% by weight, the viscosity is too high, the coating operation is difficult, and if it exceeds 50% by weight, the content of the active ingredient or the binder is lowered, and the viability of marine organisms is lowered.

In addition, the method for applying the surface of the marine structure according to an embodiment of the present invention,

(a) mixing 5 to 45% by weight of the binder and 10 to 50% by weight of the solvent;

(b) adding 5 to 45 wt% of alkyl lactate to the mixture obtained in step (a) and mixing the mixture;

(c) applying the mixture of step (b) to an offshore structure; And

(d) drying the composition applied in step (c) to form a film.

In the surface coating method described above, step (a) is preferably, but not limited to, mixing the binder and the solvent until the binder is dissolved in the solvent through a stirrer or the like. The binder of step (a) is one or two selected from vinyl resin, urethane resin, rubber chloride resin, phthalic acid resin, alkyd resin, epoxy resin, phenol resin, melanin resin, acrylic resin, fluorine resin, silicone resin and rosin It may be more than one species. In addition, the solvent of step (a) may be one or two or more selected from aromatic hydrocarbon solvents such as xylene, ketone solvents such as methyl ethyl ketone and methyl isobutyl ketone, and cellulsolve solvents such as cellulsolve acetate.

In the step (b), the alkyl lactate is added to the mixture obtained in the step (a), and then mixed using a stirrer or the like, but is not limited thereto.

Step (c) may be applied with a brush or sprayed with air pressure, but is not limited thereto.

Step (d) may be exposed to dry in air. Alternatively, the curing operation may be repeated to increase the surface adhesion to the fish and further promote the curing of the surface layer, but is not limited thereto.

The film of step (d) may have a weight of 0.05 g / ㎠ to 0.50 g / ㎠. When the weight of the film is less than 0.05 g / cm 2, the ability to grow is insignificant, and when the weight of the film is more than 0.50 g / cm 2, it is uneconomical.

The surface coating film of the marine structure according to an embodiment of the present invention is characterized in that it comprises an alkyl lactate.

The surface coating film preferably has a weight of 0.05 g / cm 2 to 0.50 g / cm 2. When the weight of the film is less than 0.05 g / cm 2, the ability to grow is insignificant, and when the weight of the film is more than 0.50 g / cm 2, it is uneconomical.

The coating further comprises a binder, the weight ratio of alkyl lactate: binder is preferably 1 to 45: 2 to 45. If the amount of the alkyl lactate is too large and the binder is too small to fall outside the above range, it is difficult to stably maintain the film on the surface of the marine structure. If the alkyl lactate is too small and there are many binders out of the above range, the marine engraftment ability is poor. From this point of view, the weight ratio is more preferably 5-30: 5-30. The binder may be one or two or more selected from vinyl resins, urethane resins, rubber chloride resins, phthalic acid resins, alkyd resins, epoxy resins, phenol resins, melanin resins, acrylic resins, fluorine resins, silicone resins, and rosin.

In the surface coating film, the marine structure may be an artificial reef.

Hereinafter, one embodiment of the present invention will be described in more detail, but the present invention is not limited thereto.

Example

Example 1

60 g of vinyl resin VAGH (Dow Chemicals) was added to a 0.5 L tin container, and 60 g of xylene and 30 g of methyl isobutyl ketone were added and mixed well until dissolved by a stirrer. After adding 50 g of ethyl lactate and mixing using a stirrer at 3500 rpm for 60 minutes, a stimulator composition was prepared.

Example 2

60 g of vinyl resin VAGH (Dow Chemicals) was added to a 0.5 L tin container, and 60 g of xylene and 30 g of methyl isobutyl ketone were added and mixed well until dissolved by a stirrer. After adding 50 g of butyl lactate and mixing using a stirrer at 3500 rpm for 60 minutes, a stimulator composition was prepared.

Example 3

60 g of vinyl resin VAGH (Dow Chemicals) was added to a 0.5 L tin container, and 60 g of xylene and 30 g of methyl isobutyl ketone were added and mixed well until dissolved by a stirrer. 20 g of ethyl lactate and 30 g of butyl lactate were added, followed by mixing using a stirrer at 3500 rpm for 60 minutes to prepare a stimulator.

Example 4

40 g of vinyl resin VROH (Dow Chemicals) and 40 g of rosin DX-800 (Laton Korea Co. Ltd.) were added to a 0.5 liter tin container, and 20 g of xylene and 40 g of methyl isobutyl ketone were added. Mix well until After adding 60 g of ethyl lactate and mixing using a stirrer at 3500 rpm for 60 minutes, a stimulator composition was prepared.

Example 5

In a 0.5 L tin container, 60 g of vinyl resin VMCH (Dow Chemicals) and 60 g of rosin DX-400 (Laton Korea Co. Ltd.) were added, 20 g of xylene and 40 g of methyl isobutyl ketone were dissolved. Mix well until After adding 20 g of ethyl lactate and mixing using a stirrer at 3500 rpm for 60 minutes, a stimulator composition was prepared.

Example 6

40 g of vinyl resin VAGH (Dow Chemicals) and 40 g of rosin DX-600 (Laton Korea Co. Ltd.) are added to a 0.5 liter tin container, and 20 g of xylene and 40 g of methyl isobutyl ketone are dissolved in a stirrer. Mix well until After adding 60 g of ethyl lactate and mixing using a stirrer at 3500 rpm for 60 minutes, a stimulator composition was prepared.

Comparative Example 1

100 g of vinyl resin VAGH (Dow Chemicals) was added to a 0.5 L tin container, and 59 g of xylene and 40 g of methyl isobutyl ketone were added and mixed well by dissolution through a stirrer. After adding 1 g of ethyl lactate, the mixture was mixed using a stirrer at 3500 rpm for 60 minutes to prepare a growth promoter composition.

Comparative Example 2

100 g of vinyl resin VYHH (Dow Chemicals) was added to a 0.5 L tin container, and 59 g of xylene and 40 g of methyl isobutyl ketone were added and mixed well until dissolved by a stirrer. 1 g of butyl lactate was added and mixed using a stirrer at 3500 rpm for 60 minutes to prepare a stimulator.

division A growth promoter bookbinder solvent Ethyl lactate Butyl lactate Vinyl resin ¹⁾ Rosin ²⁾ xylene Methyl Isobutyl Ketone Example 1 50 - 60 - 60 30 Example 2 - 50 60 - 60 30 Example 3 20 30 60 - 60 30 Example 4 60 - 40 40 20 40 Example 5 20 - 60 60 20 40 Example 6 60 - 40 40 20 40 Comparative Example 1 One - 100 - 59 40 Comparative Example 2 - One 100 - 59 40  1) VMCH, VYHH, VMCA, VROH, VAGH, Dow Chemicals 2) DX 100, 200, 400, 600, 700, 800, 900 series, Laton Korea Co. Ltd.

Test Example 1: Verification of agar diffusion method

As one of experiments for verifying the engraftment ability of the composition according to an embodiment of the present invention, an experiment for measuring the engraftment rate of the spores of the composition was performed. 2 g of agar was added to 100 ml of distilled water and heated to make agar medium (2%) in liquid form, and the prepared agar medium was placed in a constant temperature water bath (52 ° C.) to maintain a liquid state. In 5 ml of 2% agar medium prepared as described above, 5 mg of ethyl lactate and butyl lactate, which are stimulating promoters, were added to prepare a sample having a concentration of 1000 mg / L. In addition, 5 ml of 2% agar medium prepared as described above was added with 0.05 mg of ethyl lactate and butyl lactate as the promoters of growth, and a sample having a concentration of 10 mg / L was used for the experiment.

The prepared sample was plated on slide glass by 1 ml each and dried at room temperature for 30 minutes. 2% agar medium was used as a control plate. The prepared slides were placed in seawater releasing spores of Ulva pertusa Kjellman and stored in the dark for 18 hours. After 18 hours, the slides were washed with running water and the degree of spore engraftment was observed at × 400 magnification using an optical microscope (Olympus CK2) (FIG. 1).

The number of spores per unit area (cell / cm ² ) applied to each applied area was counted, and the number of spores per unit area of 2% agar medium used as a control was compared. The results are shown in Table 2 below.

Classification (Growth Promoter) Concentration (mg / l) 10 1000 Control 50 ± 5 cell / cm ² Example 1 (ethyl lactate) 790 ± 30 1110 ± 35 Example 2 (butyl lactate) 820 ± 35 1140 ± 35

<Test Example 2: Coupon panel seawater immersion test verification>

The coupon panel was manufactured by using PVC material in the size of 1500 mm × 600 mm (L × W), and then made by drilling a test hole with a diameter of 30 mm and a depth of 3 mm at 50 mm intervals. In order to prevent one hole was drilled between the four experimental spheres to facilitate the flow of water (Fig. 2).

In order to apply to the coupon panel for the coupon panel sea water immersion test, the compositions prepared according to Examples 1 to 6 and Comparative Examples 1 and 2 were injected into the experimental sphere using pipettes of 1 ml and 2 ml, respectively. After injection, it was dried well at room temperature for 2-3 days. The thickness of each film produced as a result of drying was measured. The results are shown in Table 3 below. On the other hand, a coupon panel with a film formed in this way was installed in Ayajin inner port near Sokcho. As an installation method, a coupon panel was installed to be within a depth of 0.5 to 2 M using a buoy.

Coupon panel seawater immersion test After 30 days of installation, the degree of engraftment was indicated as the upper, middle, and lower (High, H; Medium, M; Low, L) based on the area of each coated cell of the coupon panel.

division 30 days after coupon panel sea soaking 1 ml 2 ml Film thickness (㎛) Engraftment degree Film thickness (㎛) Engraftment degree Control 200 L 200 L Example 1 185 H 198 H Example 2 192 H 190 H Example 3 198 H 204 H Example 4 190 H 205 H Example 5 204 M 210 H Example 6 208 H 196 H Comparative Example 1 198 L 204 L Comparative Example 2 208 L 200 L a) control group: PVC alone b) gupon panel engraftment: high (H), medium (M), low (L)

Figure 1 shows the application of the composition (FAs) on the slide glass according to an embodiment of the present invention.

2 is a schematic view of a PVC coupon panel to which the composition is applied according to an embodiment of the present invention.

Claims (19)

delete A marine organism engraftment promoter composition for application of marine structures containing an alkyl lactate of C _1-6 . The method of claim 2, wherein the alkyl lactate is marine lactation promoter for marine structure application, characterized in that one or two alkyl lactate selected from ethyl lactate (butyl lactate) and butyl lactate (butyl lactate). Composition. According to claim 2, wherein the alkyl lactate is marine life growth promoter composition for the application of marine structures, characterized in that it contains an amount of 5 to 45% by weight. [5] The marine organism growth promoter composition according to claim 4, wherein the growth promoter composition further comprises 5 to 45 wt% of a binder and 10 to 50 wt% of a solvent. The method of claim 5, wherein the binder is one or two selected from vinyl resin, urethane resin, rubber chloride resin, phthalic acid resin, alkyd resin, epoxy resin, phenol resin, melanin resin, acrylic resin, fluorine resin, silicone resin and rosin Marine organism growth promoter composition for application of marine structures, characterized in that the species or more. The marine organism growth promoter composition according to claim 5, wherein the solvent is one or two or more selected from an aromatic hydrocarbon solvent, a ketone solvent, and a cellussolve solvent. A method of applying the surface of an offshore structure, (a) mixing 5 to 45% by weight of the binder and 10 to 50% by weight of the solvent; (b) adding 5 to 45% by weight of C _1-6 alkyl lactate to the mixture obtained in step (a) and mixing the mixture; (c) applying the mixture of step (b) to an offshore structure; And (d) drying the composition applied in step (c) to form a film. The method of claim 8, wherein the alkyl lactate is one or two alkyl lactates selected from ethyl lactate and butyl lactate. According to claim 8, wherein the binder of step (a) is a vinyl resin, urethane resin, rubber chloride resin, phthalic acid resin, alkyd resin, epoxy resin, phenol resin, melanin resin, acrylic resin, fluorine resin, silicone resin and rosin Surface coating method of the marine structure, characterized in that one or two or more selected. The surface coating method of claim 8, wherein the solvent of step (a) is at least one selected from an aromatic hydrocarbon solvent, a ketone solvent, and a cellulsolve solvent. 9. The method of claim 8, wherein the coating of step (d) has a weight of 0.05 g / cm 2 to 0.50 g / cm 2. delete Surface coating film of marine structure containing C _1-6 alkyl lactate. The surface coating film of claim 14, wherein the alkyl lactate is one or two alkyl lactates selected from ethyl lactate and butyl lactate. 15. The surface coating film of claim 14, wherein the film has a weight of 0.05 g / cm 2 to 0.50 g / cm 2.  15. The film for surface coating of an offshore structure according to claim 14, wherein the coating further comprises a binder, wherein the weight ratio of alkyl lactate to binder is 1 to 45: 2 to 45. The method of claim 17, wherein the binder is one or two selected from vinyl resins, urethane resins, chlorinated rubber resins, phthalic acid resins, alkyd resins, epoxy resins, phenol resins, melanin resins, acrylic resins, fluorine resins, silicone resins, and rosin. A coating film for surface coating of an offshore structure, characterized in that there are more than one species. 15. The surface coating film of claim 14, wherein the marine structure is an artificial reef.

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