JPH08134779A - Fiber having effects of safety and preventing aquatic life adhesion - Google Patents

Abstract

PURPOSE: To obtain a fiber and fiber products having a high safety to fishes and shell fishes and to the human body, and capable of preventing the adhesion of aquatic lives for a long period. CONSTITUTION: This fiber and fiber products having the effects of safety and preventing the adhesion of aquatic lives comprises blending 2, 3, 5, 6- tetrachloro-4 (methylsulfone)pyridine, 2-n-octyl-4-isothiazolin-3-one, etc., as an antifouling agent and a liquid paraffin, an alkyl modified polysiloxane, etc., as a sustained releasing agent with a fiber forming polymer, spinning the mixture and applying >=0.5wt.% sizing agent of a water soluble polymer to the obtained antifouling fiber yarns to protect the antifouling fiber from severe tentions during re-winding after the spinning, twisting, net production process, etc. and to prevent a working environment from pollution caused by the scattering of the antifouling agent. Since the preventive membrane on the surface of the fiber is preferably removed rapidly by dissolving upon immersing it into the sea, the application of a polymer dissolvable in a seawater of 25 deg.C within 24hr is desirable. Therefore, as water soluble polymers, a PVA, an acrylic-based polymer, a sulfonated polyester, etc., are prefered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber having very little attachment of aquatic organisms when used in contact with sea water or fresh water for a long time, and a fiber product produced from the fiber.

[0002]

2. Description of the Related Art Textile products used for a long period of time in seawater or freshwater include, for example, fixed nets for fisheries, fishnet products for fisheries such as fishnets, and for mooring buoys, light buoys and buoys. Rope used: There is a pollution prevention fiber membrane used for civil engineering. These textiles are exposed to various adherent aquatic organisms on their surface during long-term contact with seawater or freshwater.
For example, algae such as sea lettuce and diatom, coelenterates such as sea anemones and hydrozoa, sponges such as sea spiders, ring-shaped animals such as corydalis, touched animals such as bryozoa, arthropods such as barnacles, protozoa such as ascidians. , Molluscs such as mussels attach and live.

Due to the attachment of aquatic organisms, for example, in a fixed net, problems such as net loss due to increased net settling water flow resistance due to increased weight, net damage due to contact and bending, and damage to caught seafood have arisen. . In addition to sagging nets due to increased weight, sacks of nets also cause major obstacles such as oxygen deficiency due to reduced fluidity of seawater and freshwater, and damage to livestock and seafood by various adherent aquatic organisms. is there.

As a measure for preventing the above-mentioned aquatic organisms from adhering to the textile products used for long-term contact with seawater or fresh water, tributyltin oxide, triphenyltin oxide, triphenyltin acetate have been heretofore used. Methods of treating the above textiles with organotin compounds such as triphenyltin chloride have been widely used. However, the use of an organic tin compound has a problem that it causes a bad unpleasant odor or an irritating odor when treating a textile product using the compound, and thus deteriorates the working environment. Moreover, the abnormal accumulation of organotin compounds in the body of fish and shellfish leads to serious disorders such as malformation and death of the fish and shellfish, and when humans ingest such seafood, a large amount of damage to the human body occurs. It has been revealed in recent years that it has an adverse effect. Therefore, the use of textile products treated with organotin compounds has come to be voluntarily restricted, and tends to be totally prohibited. In recent years, antifouling agents that do not contain organotin have been developed and marketed, but even if the accumulation of fish bodies can be avoided, it is caused by the antifouling agent itself and the organic solvent when treating textile products with it. The work environment is poor due to the severe unpleasant odor and irritating odor, and there is no problem that the health of workers is impaired. Moreover, the antifouling effect of the post-processing lasts for 3 months, but the present situation is that it has only 1 to 2 months due to the recent marine pollution.
Also, in order to reprocess the antifouling agent, it is necessary to remove the terrestrial organisms adhering to the net, which makes the labor of the fishermen a great deal of effort, and the antifouling effect lasts for a long period of time. There is a strong demand for products that do not require the labor of.

Therefore, as one of the techniques that can be used as an alternative to the post-processing with an antifouling agent, a method has been tried in which a metal powder such as copper, zinc, silver or nickel having an adhesion inhibiting effect on adherent organisms is contained in the fiber. ing. However, it is only the copper compound that has the antifouling effect at the practical level, and copper has a drawback that the dissolution rate into seawater is too fast, and the antifouling effect lasts at most 3 months to half a year. . In addition, as a so-called pollution-free antifouling paint containing no antifouling agent such as an organic compound or a copper compound, there is a silicone antifouling paint that utilizes surface water repellency. This forms a liquid layer made of a mixture of silicone oil and liquid paraffin to prevent biofouling. Although the antifouling effect is recognized to some extent, some of the aquatic organisms have no effect and the antifouling effect is insufficient.

In order to maintain the antifouling effect for a long time regardless of the type of aquatic organism, it is necessary to use an antifouling agent to some extent, and in order to maintain the antifouling effect for a long period of several years, the antifouling effect is required. It is necessary to incorporate a large amount of soiling agent into the fiber. Therefore, it is really a problem to type a question without fiber strength of the antifouling agent is weakened. In order to solve this problem, the fiber structure may be a core-sheath structure, and an antifouling agent may be added only to the sheath to increase the fiber strength. The fiber surface is rubbed by the excessive tension in and the antifouling agent scatters together with the fiber powder and contaminates the area around the work place, or the antifouling agent bleeds out in large quantities with the release agent on the fiber surface to handle the fiber. The antifouling agent may adhere to the person's skin and cause discomfort or cause skin damage. In addition to the work environment problem in the above, there is no change in that the antifouling agent adheres to the skin when a fisherman handles the antifouling treated net.

As described above, the metal or its compound,
Further, until now, a fiber using an organic compound, which has a high effect of preventing attachment of aquatic organisms, is durable, and can be put to practical use in terms of strength, processability, worker safety, etc., has not been obtained until now.

[0008]

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a fiber and a fiber product which are highly safe and durable against seafood and humans and which can prevent aquatic organisms from adhering for a long period of time. It is in. In particular, the present invention provides a fiber and a fiber product for preventing attachment of aquatic organisms, which is not limited to safety in a narrow range of non-accumulation to seafood and the human body and which allows net workers and fish workers to comfortably work.

[0009]

According to the present invention, the above object is to provide an aquatic organism adhesion-preventing fiber comprising a surface of a fiber containing an antifouling agent, which is covered with a water-soluble polymer. To be achieved.

The present invention will be described in detail below. The feature of the present invention resides in that the entire surface of the fiber containing the antifouling agent is covered with the water-soluble polymer. The purpose of the water-soluble polymer is to protect the fibers from excessive tension in the rewinding, twisting, and net-making processes, and to prevent the work environment from being polluted by the scattering of the antifouling agent during rubbing and the antifouling agent that has eluted on the fiber surface. It prevents direct contact with the skin of net workers and fishermen, and when fibers are immersed in water, they are quickly dissolved and removed, which does not hinder the antifouling effect. The work environment pollution due to the scattering of the antifouling agent and the skin damage due to the adhesion of the antifouling agent to the skin of the worker are problems which occur to some extent regardless of the type of the antifouling agent. That is, there is currently no antifouling agent that has an effective antifouling effect and is completely harmless to workers (the human and animal harmless antifouling agent has an insufficient antifouling effect).
Therefore, the present invention is not limited to the antifouling agents used in the examples of the present invention, and it can be said that all the antifouling agents are effective means for ensuring the safety of workers.

The antifouling agent used in the present invention may be any non-organic tin compound-based antifouling agent that does not cause marine pollution or adverse effects on fish bodies, and all known agents can be used. For example, methylene bis thiocyanate, manganites ethylenedithiocarbamate, zinc ethylenebisdithiocarbamate, tetramethylthiuram monosulfide, tetramethylthiuram disulfide, 2,3,5,6-tetrachloro-4- (Methyl sulfone) pyridine, N- (fluorodichloromethylthio) phthalimide, 2-n-octyl-4-isothiazolin-3-one and the like can be mentioned. If the amount of the antifouling agent added is too small, the effect will be reduced, and if it is too large, it will be difficult in terms of spinnability. It is preferably in the range of 5% by weight, particularly 5 to 15% by weight. Further, in the present invention, a sustained-release agent can be added to further improve the effect of the antifouling agent. Examples of the sustained-release agent include organic polysiloxane, liquid saturated hydrocarbon such as liquid paraffin, and the like.

The fiber of the present invention can be obtained by compounding a fiber-forming polymer with an antifouling agent and a sustained release agent to form a fiber. The yarn referred to in the present invention means a yarn produced by all general spinning methods such as melt spinning, wet spinning, and dry spinning. For example, polyester fibers such as polyethylene terephthalate and polybutylene terephthalate, polyamide fibers such as nylon 6 and nylon 66, polyacrylonitrile fibers, polyvinyl alcohol fibers, recycled fibers such as rayon, aramid fibers, wholly aromatic polyester fibers. In addition to fibers, there may be mentioned yarns made of natural fibers such as cotton and wool. The present invention includes ropes, nets, woven and knitted fabrics and sheets which are products obtained by processing these yarns.

The water-soluble polymer used in the present invention has a dissolution rate in a film (thickness of about 40 μ) in artificial seawater at 25 ° C. within 24 hours, and has a rate of separation, and the adhesion amount to the whole fiber is It is 0.5% by weight or more. Unless the film (thickness: about 40μ) dissolves and separates in artificial seawater at 25 ° C within 24 hours, the film will not be dissolved and removed when the net is immersed in seawater, and the antifouling effect will be hindered. Become. Further, the amount of adhesion is required to be 0.5% or more, preferably 2 to 7%. If the adhered amount is less than 0.5%, the fiber surface cannot be completely covered, and if the adhered amount is too large, it becomes difficult to dissolve and remove the coating film, resulting in poor antifouling effect. The coating film of such a water-soluble polymer may be directly attached to the fiber, or may be applied after forming a fiber product such as a rope, a net, a woven or knitted fabric and a sheet.

The water-soluble polymer used in the present invention is 1
When the yarns aligned to 2000 denier are run through the spring tensor at a speed of 100 m / min, the film adhesiveness is such that the yarn tension does not separate at a tension of 2 kg.
It is preferable to have film strength. In the knotless net manufacturing process, which is the current mainstream of fishnets, the yarn winding process is the most burdensome on the yarn. The tension of the yarn winding depends on the type of yarn and the thickness of the yarn (thick yarn). (It is necessary to increase the winding tension to prevent the collapse of the winding.)
In general, 12000 denier yarn is wound with a gun with a tension of 2 kg or more, and therefore it is preferable that the coating does not peel off under these conditions. It is not possible to specify the tension range per denier because the thicker the yarn, the higher the gun winding tension per denier, and for yarns of different thickness, even if the tension per denier is the same, the external force is evenly applied to the yarn. This is because the tension cannot be discussed simply by the tension per denier when evaluating the durability of the coating. In addition, the water-soluble polymer used in the present invention is 200 T / M in the yarn aligned to 12000 denier.
It is preferable that the film has such flexibility that the film is not twisted and peeled. 1 in the knotless net making process
This is because the twist of about 2000 T / M is applied to the yarn of 2000 denier, and if the flexibility of the coating is insufficient, the coating cannot withstand the deformation due to the twist of the yarn and peels off. Further, the water-soluble polymer used in the present invention is also required to have tack resistance (prevention of cissing) so that the bobbins and gun-wound yarns do not stick to each other and adhere. Generally, a water-soluble polymer has a property of absorbing moisture in the air, and since a net-making factory has almost no temperature / humidity adjusting facility, if the water-soluble polymer is left in a high temperature / humidity place, the coating becomes soft. It becomes easier to stick. If the yarn sticks, the coating peels off when the yarn is unwound and it cannot be put to practical use.
As described above, in order for the water-soluble polymer used in the present invention to function as a protective film on the surface of the yarn, film adhesiveness, film durability, film flexibility, and film adhesion resistance are required.

The water-soluble polymer used in the present invention is not particularly limited as long as it satisfies the conditions of solubility in seawater, film adhesion, film durability, film flexibility and film adhesion resistance. For example, a commercially available warp thread sizing agent such as polyvinyl alcohol-based, acrylic-based, water-soluble polyester-based sizing agent can be used. Among them, polyvinyl alcohol-based sizing agents have good adhesion resistance of coatings, but poor adhesion to hydrophobic fibers, and because the coatings are hard and poor in flexibility, acrylic-based and water-soluble polyester-based sizing agents are used. Agents are especially desirable. However, any acrylic or water-soluble polyester sizing agent is not necessary. For example, in the case of acrylic sizing agent, the sizing agent for water jet loom (WJL) is insoluble in water and salt water at room temperature, which hinders the antifouling effect. Acrylic sizing agents that are not preferable and have a high hygroscopicity are also not preferable because they have poor adhesion resistance. In addition, the properties of water-soluble polyester sizing agents vary greatly depending on the sizing agent manufacturer and brand, and various hardnesses of the coating are commercially available, from hard to flexible, so that the above conditions must be met. It is desirable to select and use a suitable water-soluble polyester sizing agent. Particularly desirable examples of commercially available acrylic-based sizing agents include acrylic ester copolymer plus size T-780 (Kyodo Chemical Co., Ltd.), and examples of water-soluble polyester-based sizing agents include sulfonated polyester Marposol TI (Matsumoto). Oil and Fat Pharmaceutical Co., Ltd.). A surface active agent, a leveling agent, etc. are added as an auxiliary agent to the coating of only the water-soluble polymer, and a coating in which an after-waxing agent, after-oil, etc. are used in combination improves the adhesiveness with the fiber, and the adhesion resistance is improved. It is preferable because it improves the effect of preventing the yarns from adhering to each other, and reduces the friction coefficient of the coating film surface so that the coating film does not easily peel off.

The fiber of the present invention is a fiber-forming polymer compounded with an antifouling agent and a sustained-release agent, which is formed into a filament and is coated with a water-soluble polymer. Even if the antifouling agent is post-processed on other products, by forming a protective film with a water-soluble polymer, the antifouling agent does not come into direct contact with the skin of the worker, preventing skin damage caused by the antifouling agent. It is effective for

Next, the method for producing the fiber of the present invention will be described. In the case of the present invention, using a so-called twin-screw kneading extruder, the antifouling agent and the sustained-release agent are uniformly kneaded with the fiber-forming polymer to be pelletized, and the pellets may be spun and fiberized, Attach the spinning head to the twin-screw kneading extruder,
The direct spinning is more preferable because the thermal deterioration of the antifouling agent can be suppressed to the minimum.

Further, when the resin-coated yarn is made into fibers by the melt extrusion method, the core yarn may be spun yarn, filament yarn or the like, and a plied yarn made of these may be used according to the purpose. . The material of the core yarn is not particularly limited, such as natural fiber, synthetic fiber, and recycled fiber, but synthetic fiber is particularly preferable from the viewpoint of physical properties such as heat resistance and strength. Above all, the higher the melting point or the decomposition temperature of the yarn is, the wider the selection range of the resin coating is, which is desirable.

As the fiber-forming polymer of the sheath component to which the antifouling agent is added, a polymer having a melting point of 160 ° C. or lower is desirable in order to minimize thermal deterioration of the antifouling agent during spinning, and for example, polyhexamethylene. Examples thereof include terephthalate, isophthalic acid-modified polyhexamethylene terephthalate, isophthalic acid-modified polyethylene terephthalate, isophthalic acid-modified polybutylene terephthalate, polyethylene and the like.

In the above case, the core / sheath weight ratio is 1 /
3 to 3/1 is preferable, and about 1/1 is most preferable in terms of fiber strength and antifouling effect. If the core / sheath weight ratio is less than 1/3, the strength of the fiber is low, and if it is more than 3/1, the antifouling effect becomes less durable and it becomes difficult to spin the resin-coated yarn by the melt extrusion method, which is not preferable. .

The fiber of the present invention can be obtained by coating the surface of the fiber thus obtained with a specific amount of a water-soluble polymer. The coating method of the water-soluble polymer is not particularly limited, and a usual coating method can be adopted.

Since the fiber thus obtained has a protective coating on its surface, it prevents the antifouling agent from excessively precipitating or scattering on the surface of the fiber due to the harsh tension of the net-making process. Workers can engage in fishing nets and fisheries safely without touching. And once it is immersed in water, it is quickly dissolved and removed, so that the antifouling effect is not hindered.

The fiber of the present invention may be used as it is or after being mixed with other fibers, if necessary, after being mixed and spun, and then twisted into a yarn or a roll.
Textile products such as fabrics, strings, nets, knitted fabrics, and non-woven fabrics can be used. The fibers and fiber products of the present invention are fisheries stationary nets used for long-term contact with seawater or freshwater, fishnet fish cage nets, seawater or freshwater filtration filters, and other marine textile products; A rope used for mooring light buoys, buoys, etc.
It can be effectively used as a raw material fiber or a raw material fiber product that constitutes a pollution prevention fiber membrane used for civil engineering.

[0024]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. The antifouling effect, the dissolution rate of the water-soluble polymer, the film adhesiveness / strength, the film flexibility, the tack resistance, and the safety were confirmed by the following methods. Suspension test yarns were combined to obtain about 12000 denier, and the twists (lower twist S200T / M, upper twist Z100T / M) were obtained to obtain about 24,000 denier twist yarns. Using this, create a frog net of 5 cm per mesh, attach it to a 40 cm x 80 cm copper pipe frame, and have a water depth of 1 to 2 m in the Seto Inland Sea area.
It was suspended at the position of 1, and pulled up after 1, 3, 6, 12, and 24 months, and the state of attachment of organisms was observed, and evaluation was made in the following 5 stages. 5 ... ・ No adherence of living organisms is observed 4 ... Living organisms adhere to about 20% of the surface area of the twisted yarn. 3 ... Living organisms adhere to about 40% of the surface area of the twisted yarn. 2 ... About 80% of the surface area of the twisted yarn is covered with attached organisms. 1 ... About 100% of the surface area of the twisted yarn is covered with attached organisms. Dissolution Rate of Water-Soluble Polymer A liquid substance is added as it is to a beaker at a ratio of 1 to 9 of water, and the solid substance is stirred and dissolved while heating, and then cooled to room temperature. Next, the aqueous solution is uniformly spread on a smooth glass plate so that the thickness after drying is about 40 μm, air-dried, and then the film is sampled. Then, the film was gently placed on artificial seawater at 25 ° C. in a beaker, and the time until dissolution (no longer forming the film form) was measured. The composition of artificial seawater is as follows. NaCl 27.213 g / l MgCl ₂ 3.807 g / l MgSO ₄ 1.658 g / l CaSO ₄ 1.260 g / l K ₂ SO ₄ 0.863 g / l CaCO ₃ 0.123 g / l MgBr ₂ 0.076 g / l Total 35.000 g / l Coating durability test (evaluation of the degree of peeling of the coating) Converging the coated yarn to 12000 denier and
A 5T / M twisted product was wound through a spring tensor at a speed of 150m / min with a tension of 2.5Kg and wound, and the surface of the yarn was observed with a stereoscopic microscope to determine the degree of film peeling as follows. It was judged. ◎ ... The coating is not peeled off at all ○ ・ ・ ・ 90% or more of the coating remains △ ・ ・ ・ Almost half of the coating remains × ・ ・ ・ 90% or more of the coating peels off Safety Confirmation test Five panelists (A, B, C, D, and E) touched the suspension test fishnet with their bare hands to evaluate the irritation to the skin, and determined as follows. ○ ・ ・ ・ No skin irritation △ ・ ・ ・ Slight skin irritation × ・ ・ ・ Strong skin irritation

Examples 1 to 6 In a general twin-screw kneading machine direct-attached cover yarn spinning machine, a polyethylene terephthalate drawn yarn of 1000d-192f and S80T / M (Kuraray, Kraftel) as a core yarn is used.
Using a hopper, [η] = 1.0 dl / g (phenol / tetrachloroethane equivalent weight ratio, measured at 30 ° C.) polyhexamethylene terephthalate (melting point 139 ° C.) chips modified with 10 mol% of isophthalic acid are supplied. Then, as an antifouling agent, Densil S100;
Three types of 5,6-tetrachloro-4- (methylsulfonyl) pyridine, 2-n-octyl-4-isothiazolin-3-one, and Preventol A; 3 (N-fluorodichloromethylthio) phthalimide are selected and gradually As a release agent
Liquid paraffin having a viscosity of 76 centistokes at 38 ° C. and an alkyl-modified polysiloxane having a viscosity of 900 centistokes at 25 ° C. (tresilicon: SF841)
Using 6), the mixture was charged so that the compounding ratio was the weight ratio shown in Table 1, stirred and dissolved, and the mixture was supplied to the cylinder with a mono pump. On the other hand, dimethylpolysiloxane having a viscosity of 100,000 centistokes at 25 ° C. was fed by a gear pump to the same weight% as shown in Table 1, and the core / sheath ratio was 1.
A 2000-denier resin-coated yarn (CY) of 1/1 was obtained.
The spinning temperature at this time was 160 ° C., and the spinning speed was 100 m / min.

Marposol T manufactured by Matsumoto Yushi Co., Ltd.
I (sulfonated polyester): Auxiliary agent (Sizing wax K-52 manufactured by Matsumoto Yushi-Seiyaku Co., Ltd.) = A sizing agent mixed in a weight% ratio of 98: 2 and Plus Size T- manufactured by Kyowa Chemical Industry Co., Ltd.
780 (acrylic acid ester copolymer): water: auxiliary agent (Sizing wax K-52 manufactured by Matsumoto Yushi-Seiyaku Co., Ltd.) = 78: 2
After applying a sizing agent mixed in a weight ratio of 0: 2 = with a one-stage roller, the yarn speed is 30 m / min, the chamber is 100 ° C.,
The cylinder was dried at 90 ° C. The adhesion amount was as shown in Table-1. Table 2 shows the results of the suspension test and the safety confirmation test of the obtained yarn. All of the threads had a high effect of attaching aquatic organisms and were highly safe.

Examples 7 to 8 As a water-soluble polymer, Kuraray Poval PVA-205
CY having a coating film of a water-soluble polymer was obtained in the same manner as in Example 1 and Example 2 using the 8% solution of. Table 2 shows the results of the suspension test and the safety confirmation test of the obtained yarn. Since PVA-205, which is a water-soluble polymer, is slightly inferior in adhesiveness to fibers, some people felt some skin irritation during contact.

Comparative Examples 1 to 3 As a water-soluble polymer, Marposol W-4 manufactured by Matsumoto Yushi Co., Ltd.
Using 50D (acrylic acid / acrylic acid ester copolymer ammonium salt), CY having a coating film made of a water-soluble polymer was obtained in the same manner as in Example. Table 2 shows the results of the suspension test and the safety confirmation test of the obtained yarn. The water-soluble polymer, Marposol W-450D, did not dissolve in artificial seawater within 24 hours, so the film had good strippability, but the antifouling agent did not elute and the suspension test showed poor results. Met.

Comparative Examples 4 to 6 CY was produced in the same manner as in Examples 3 to 5 except that the surface of the yarn was not coated with the water-soluble polymer. Table 2 shows the results of the suspension test and the safety confirmation test of the obtained yarn.
Since the yarn surface was not coated with the water-soluble polymer, the suspension test result was good, but in the safety confirmation test, all felt skin irritation.

Comparative Examples 7 to 8 CY to which only the sustained release agent was added without adding the antifouling agent (Comparative Example 7) and CY containing only the base polymer without adding the antifouling agent or the sustained release agent (Comparative Example) Example 8) was produced. Table 2 shows the results of the suspension test and the safety confirmation test of the obtained yarn.
The suspension test results were, of course, poor because no antifouling agent was added.

Comparative Example 9 A suspension test net consisting of CY obtained in Comparative Example 1 was post-processed with an antifouling paint (main antifouling agent: tributyltin oxide (TBTO)) to prepare a suspension test and confirm safety. The test was conducted and the results are shown in Table 2. Even when compared with the yarn to which the antifouling agent was added, strong skin irritation was felt in the safety confirmation test, and several people's skin was rashed.

[0032]

[Table 1]

The abbreviations in Table 1 are as shown below. Antifouling agent densyl: densyl S100; 2,3,5,6-tetrachloro-4- (methylsulfonyl) pyridine A-3: preventol A-3; N- (fluorodichloromethylthio) phthalimide M-8: 2-n -Octyl-4-isothiazoline-3
-On Sustained Release Silicon: Toray High Viscosity Silicon SH-200 Modified Silicon: Toray Alkyl Modified Silicon SF841
6 Flow Para: Liquid paraffin No. 350S Paste type TI: Marposol TI (Sulfonated polyester) made by Matsumoto Yushi Co., Ltd. T-780: Plus size 780 (acrylic acid ester copolymer) made by Kyoyo Chemical Industry PVA: Kuraray Poval PVA-205 (partial saponification degree of polymerization 500) W -450D: Marposol W-450D (WJ manufactured by Matsumoto Yushi Co., Ltd.)
Acrylic glue for R)

[0034]

[Table 2]

[0035]

EFFECT OF THE INVENTION The fiber of the present invention has a water-soluble coating formed on the surface of the fiber, which protects the antifouling fiber from severe tension such as twisting and knitting process, and the antifouling agent scatters to contaminate the work environment. In addition to preventing this from happening, it also prevents the antifouling agent from directly touching the skin of the fishermen, and even people with weak skin can safely handle without protective equipment. Further, when immersed in the sea, the protective coating on the surface is rapidly dissolved and removed, and the antifouling performance which is no different from that without coating can be maintained. Further, the present invention is effective not only for protection from the antifouling fiber but also from the antifouling paint film, and can be expected to have a wide range of applications.

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Claims (2)

[Claims] 1. A fiber having an effect of preventing attachment of aquatic organisms, characterized in that the surface of the fiber containing an antifouling agent is covered with a water-soluble polymer. 2. The amount of the water-soluble polymer attached to the entire fiber is 0.5% by weight or more, and the water-soluble polymer is 25% by weight.
A fiber having an effect of preventing attachment of aquatic organisms according to claim 1, which is a polymer that dissolves within 24 hours in artificial seawater at 0 ° C.