JP3419487B2 - Fibers and fiber products having an effect of preventing aquatic organisms from adhering - Google Patents

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 seawater or fresh water for a long time, and a fiber product containing 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; mooring buoys, light buoys and buoys. Rope used: There is a pollution prevention fiber membrane used for civil engineering. These textiles, while being in contact with seawater or freshwater for a long period of time, have various aquatic organisms on the surface thereof, such as algae such as Ulva and diatoms, coelenterates such as sea anemones, sponges such as sea spiders, and the sea urchins. Annelids, tactile objects such as bryozoans, arthropods such as barnacles, protozoa such as ascidians, and molluscs such as mussels attach and live.

Due to the attachment of these aquatic organisms, for example, in the case of stationary nets, the nets sink due to an increase in weight, the nets are washed away due to an increase in water flow resistance, and the nets are damaged due to contact and bending.
Problems such as damage to the caught seafood have occurred. In addition, in the case of a net for net life, in addition to the net subsidence due to an increase in weight, oxygen deficiency due to a decrease in the fluidity of seawater or fresh water, and other major obstacles such as damage to livestock and seafood by various aquatic organisms will occur.

As a measure for preventing the adhesion of aquatic organisms to the textile products used in contact with sea water or fresh water for a long time,
Heretofore, a method of treating a textile with an organic tin compound such as tributyltin oxide, triphenyltin oxide, triphenyltin acetate, triphenyltin chloride, etc. has been widely adopted. However, the use of the organic tin compound has a problem that it causes a bad unpleasant odor or an irritating odor when processing a textile product, which 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 fish and shellfish, and when humans ingest such seafood, they have a great adverse effect on the human body. It has been revealed in recent years that Therefore, the use of textile products treated with organotin compounds has come to be voluntarily restricted and tends to be totally prohibited.

Therefore, as one of the techniques which can replace the organotin compound having the above-mentioned great adverse effects, metals such as copper, silver, zinc and nickel, which have an adhesion inhibiting effect on aquatic organisms, and their compounds, Or nitrogen-based, sulfur-based,
There is a method of using an organic compound such as a halogen type. As a means for imparting these to a textile product, there is a method in which the powder thereof is mixed with a coating material made of a natural resin, a synthetic resin or the like, which is coated on the surface of the fiber and then cured. However, in this method, since the fibers become hard, the workability of twisting, warping, weaving, netting, etc. and the workability during use are poor,
Further, the roughness of the surface causes inconvenience such as damaging livestock fish and shellfish. Further, due to abrasion and the like, the active ingredient and the coating film fall off in a relatively short period of time, and the effect of preventing the adhesion of aquatic organisms disappears.

There is also a method of incorporating powders of metals, compounds thereof, or organic compounds having an adhesion inhibiting effect into the inside of the synthetic fiber, but when the amount of the compound is sufficient, spinnability and In terms of processability such as stretchability, strength of the fiber, and durability, what can be put to practical use cannot be obtained, and further, only the active ingredient present in the surface layer of the fiber contributes to the effect, so that after a short period of time, Then, the effect of preventing the attachment of aquatic organisms disappears.

Further, a method has been proposed in which a synthetic fiber, for example, a polyester monofilament contains polysiloxane (Japanese Patent Laid-Open No. 60-81312), but such a method has an effect of preventing adhesion of aquatic organisms. However, it has a drawback that its effect does not last for a long time.

As described above, the fact is that fibers which have a high effect of preventing adhesion of aquatic organisms, are durable, and can be put to practical use in terms of strength, processability, workability, etc. have not been obtained until now. .

[0009]

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a fiber which is highly safe to fish and shellfish and human body, has durability, and can prevent adhesion of aquatic organisms for a long time, and a fiber product containing the fiber. To provide. Another object of the present invention is to provide a fiber for preventing adhesion of aquatic organisms and a fiber product containing the fiber product, which does not coarsen or harden the fiber product and does not damage the seafood caught or raised. . Further, an object of the present invention is to provide a fiber used for a fiber product such as a net or a rope, which has good workability such as twisted yarn, warp, weaving and netting, and has good workability during use, and a fiber product containing the same. Is also intended.

[0010]

Means for Solving the Problems As a result of research to solve the above-mentioned problems, the present invention has revealed that a fiber made of a thermoplastic resin containing a compound satisfying a specific condition and having a specific contact angle is aquatic. The present invention has been found to have an effect of preventing adherence of organisms, and further, to be able to maintain the effect for a long period of time, leading to the present invention.

That is, according to the present invention, as a marine material, particularly as a fiber product for fishery, 1 to 50 % by weight of a liquid saturated hydrocarbon compound satisfying the following conditions (I) to (II) and a protective agent are used.
A fiber made of a thermoplastic resin containing 1 to 30% by weight of a soiling agent and having a water contact angle of 90 degrees or more on the fiber surface. (I) Melting point is 40 ° C. or lower and boiling point is 120 ° C. or higher (II) Viscosity at 25 ° C. is 1000 centistokes or lower

As the compound in the present invention, it is preferable to use a compound which has a melting point of 40 ° C. or lower and a boiling point of 120 ° C. or higher and is generally called a liquid saturated hydrocarbon. The viscosity is 1000 centistokes (hereinafter abbreviated as CS) at 25 ° C., preferably 700 CS or less, particularly preferably 500 CS or less. It is preferable to use a compound generally called a liquid saturated hydrocarbon. When the viscosity exceeds 1000 CS, the effect of the present invention is less durable. This is because, for example, when liquid paraffin is used as the compound, if the viscosity is too high, migration of liquid paraffin in the fiber does not easily occur, and it is difficult to migrate to the fiber surface in seawater or fresh water. It is speculated that this is due to a decrease in Further, the lower limit of the viscosity of this compound is not particularly limited, but when the viscosity becomes too low, phase separation with the thermoplastic resin proceeds, and the spinnability and the drawability are notably lowered, and the compound in the thermoplastic resin is not limited. Is subjected to a heat history in the process of manufacturing a fiber product, migrates to the surface of the fiber too much, and the texture of the fiber product is inferior.

Specific examples of the liquid saturated hydrocarbon include octane, nonane, decane, undecane, dodecane, tridecane, tetradecane, pentadecane, hexadecane, heptadecane, octadecane, nonadecane, eicosane,
An aliphatic saturated hydrocarbon having 8 to 20 carbon atoms such as isononane,
Examples thereof include alicyclic saturated hydrocarbons having 8 to 20 carbon atoms such as dimethylcyclohexane, ethylcyclohexane and butylcyclohexane, and these can be used alone or in combination of two or more. It is also possible to use liquid paraffin separated from petroleum. As described above, the melting point of such a compound must be 40 ° C. or lower, preferably 25 ° C. or lower, and the boiling point must be 120 ° C. or higher, preferably 150 ° C. or higher. If the melting point exceeds 40 ° C, the effect of the present invention is less durable. When the boiling point of the compound is less than 120 ° C, the antifouling effect is extremely short-lasting.

In the present invention, the antifouling effect can be further enhanced by using the above compound in combination with an organic polysiloxane such as dimethylpolysiloxane, diphenylpolysiloxane and methylphenylpolysiloxane. The combination ratio is 10:90 for the above compound: organic polysiloxane.
It is preferably about 90:10 (weight ratio).

Since the above compound has poor compatibility with the thermoplastic resin, it is dispersed in the thermoplastic resin in an island state in the cross section perpendicular to the length direction of the fiber (hereinafter simply referred to as the fiber cross section). In the present invention, it is presumed that the above-mentioned effects are exhibited because the antifouling agent described below is gradually released to the fiber surface through the compound as a passage. Therefore, in order to smoothly carry out this sustained release, there must be some connecting path between the islands of the compound in the fiber cross section, and for that purpose, the amount of the compound added is 0.1. ~ 60 wt% is required. If the addition amount is less than 0.1% by weight, the number of islands made of the compound in the fiber cross section and the communication paths between the islands are extremely reduced, and the sustained release property of the antifouling agent on the fiber surface is significantly reduced. On the other hand, if the amount added exceeds 60% by weight, filter clogging in the melt spinning process and yarn breakage due to fluffing are likely to occur. It is preferably 1 to 50% by weight. In particular, a thermoplastic resin containing the above compound and an antifouling agent as described below,
In the case of a resin-coated yarn obtained by coating a core yarn made of another thermoplastic resin, the compound can be contained in a large amount of 10 to 60% by weight.

Further, by using the above compound in combination with an antifouling agent which will be described later, the effect of preventing the attachment of aquatic organisms can be maintained for a long period of time. This is a fiber containing the above compound and an antifouling agent in a thermoplastic resin,
A film of a compound containing the antifouling agent in a high concentration is formed on the surface of the fiber, and the film has high adhesion fastness and does not flow out into seawater, for example.

Examples of such antifouling agents include metals having an aquatic organism inhibiting effect, powders thereof, alloys thereof, compounds thereof, and organic compounds having such an effect. Copper, silver, zinc, tin, nickel, etc. can be mentioned as said metal. Examples of the metal compound include oxides, halides, sulfides, and various salts of these metals. Examples of the organic compound include 2,4,5,6-tetrachloroisophthalonitrile, copper dimethyldithiocarbamate, and the like. Zinc dimethyldithiocarbamate, N-fluorodichloromethylthiophthalimide, N, N-dimethyl-N'-phenyl-
N'-fluorodichloromethylthiosulfamide, dichlorophenyldimethylurea, bis-2-pyridylthio-1-oxide zinc, 2,4-thiazolyl-benzimidazole, 2-n-octyl-4-isothiazoline-3
-One, N- (2 ', 6'-diethylphenyl) 2,3
-Dichloromaleimide, 4-chlorophenyl-3-yo-
Examples include dopropargyl formal and diiodomethyl-p-trisulfone. These metals, metal compounds, or organic compounds can be used alone or in combination of two or more kinds. Of these, metals, metal compounds, organic halogen compounds, organic nitrogen-sulfur compounds, and combinations thereof are preferable because they can remove all organisms (animals, plants, microorganisms, etc.). When using a metal, an alloy thereof, or a compound thereof as an antifouling agent, the average particle size thereof is 5 μm or less, particularly 1 μm or less,
A filter during melt spinning is preferred because it is less likely to cause clogging, fluff, and yarn breakage.

The amount of antifouling agent added to the fiber is 0.01 to 60.
%, Preferably 0.1 to 50% by weight, particularly preferably 1 to 30% by weight is desirable. Only a very small amount of antifouling agent contained in the fiber has an effect of preventing the adhesion of aquatic organisms, but in order to maintain the effect of preventing adhesion of aquatic organisms for several months or more, which is practically necessary, 0.1 Addition by weight or more is preferable. Further, if the amount of the antifouling agent added to the fibers exceeds 60% by weight, filter clogging or fluff yarn breakage easily occurs during melt spinning, and the obtained fibers also become hard and it is difficult to make a net or rope.

The thermoplastic resin of the present invention includes polyesters such as polyethylene terephthalate and polybutylene terephthalate; nylon 6, nylon 66, nylon 12
Polyamides such as polyethylene; Polyolefins such as polypropylene; Polyurethanes; Polyacrylates; Fluorine compounds such as polyvinyl chloride, polyvinyl fluoride, polyvinylidene fluoride, tetrachloroethylene; polyvinyl alcohol; ethylene-vinyl alcohol Examples thereof include fiber-forming resins such as polymers, which may be used alone or as a mixture of two or more kinds, or a copolymer. Further, these resins may contain additives such as a fluorescent whitening agent, a conductivity improver, a modifier such as an ultraviolet absorber, a coloring pigment, a stabilizer and a flame retardant.

The cross-sectional shape of the fiber of the present invention may be any shape, and may be circular or irregular. In the case of an irregular cross section, for example, an arbitrary shape such as a flat shape, an elliptical shape, a polygon such as a triangle to an octagon, a T-shape, and a multilobal shape such as a 3 to 8 lobes can be used.

Further, the fiber of the present invention may have a form in which two or more kinds of thermoplastic resins including the above-mentioned compound and the thermoplastic resin to which the antifouling agent is added are compounded. The form of the composite fiber can be any form such as a core-sheath type, a sea-island type, a laminating type, and a mixed type thereof. In the case of the core-sheath type, either a two-layer core-sheath type or a multilayer core-sheath type having three or more layers may be used. In the case of the sea-island type, the shape, number and dispersion state of islands can be arbitrarily selected. In the case of the bonding type, the bonding surface in the cross section of the fiber may be in a linear shape, an arc shape, or any other randomly curved shape, and a plurality of bonding portions are parallel to each other. Even if it is in a radial pattern,
It may have any other shape. In such a composite fiber, it is preferable that the thermoplastic resin to which the medium molecular weight polymer and the antifouling agent are added has an area of 20% or more of the fiber cross section, and particularly the medium molecular weight polymer.
It is preferable that part of the thermoplastic resin to which the antifouling agent is added is exposed on part or all of the fiber surface from the viewpoint of the effect of preventing the adhesion of aquatic organisms.

Further, the fiber shape of the present invention includes long fibers such as filaments; short fibers such as staples; filament yarns;
Spun yarn; Mixed fiber or blended yarn of the fiber of the present invention and natural fiber, semi-synthetic fiber, other synthetic fiber; plied yarn; natural fiber, synthetic fiber, recycled fiber, glass fiber, metal fiber, carbon fiber, etc. Core yarn in which a spun yarn or filament yarn made of the fiber of the present invention is wound into a coil around the core yarn, or a medium molecular weight polymer by a melt extrusion coating method. Alternatively, a cover yarn coated with a thermoplastic resin to which an antifouling agent is added may be used. The fiber of the present invention is false twist crimped,
Any processing such as confounding processing may be performed. The fiber product of the present invention may be any of knitted fabrics, non-woven fabrics, final fish nets, ropes, strings and the like made of those fibers and yarns.

Next, the method for producing the fiber of the present invention will be described with reference to an example. When the thermoplastic resin is polyester such as polyethylene terephthalate, the above compound and antifouling agent are optionally added between the completion of polymerization of the polyester and immediately before spinning and kneaded, and then extruded from a nozzle hole to form a fiber. The method is preferable because it does not cause problems such as decrease in resin viscosity, side reaction, and decomposition of plasticizer.

When a step of once forming into a pellet shape is obtained after the completion of the polymerization of the polyester, the above compound and the antifouling agent may be added after the completion of the weight, and the mixture may be kneaded and stirred to form a pellet, but the viscosity of the resin is decreased In view of difficulty in uniform dispersion, contamination of the polymerization kettle, etc., the above compound and antifouling agent are added at the time of spinning, that is, to the resin melt fluid obtained by remelting the pellets, and then kneaded by a static mixer to spin nozzle. It is preferable to extrude fibers from the holes to form fibers. It is not preferable to add the above compound and the antifouling agent together with each monomer before the polyester is polymerized, because problems such as side reactions occur.

In the continuous process in which the molten resin is continuously supplied to the spinning nozzle and discharged without passing through the step of pelletizing after the completion of the polymerization of polyester, the melting is performed at an arbitrary stage from the completion of the polymerization to immediately before the spinning. The above compound and antifouling agent were added to the resin, and then the static mixer
After kneading with, it is preferable to discharge the mixture through the spinning nozzle hole.

When polyolefin is used as the thermoplastic resin, the above compound and the antifouling agent are uniformly kneaded together with the polyolefin in a twin-screw kneading extruder to form pellets, and the pellets can be spun into fibers. .

Since the fibers thus obtained have a high contact angle with water of 90 degrees or more, they have an effect of preventing aquatic organisms from adhering to the surface, and further contain an antifouling agent. The effect can be sustained over a long period of time. Further, the fibers themselves have strength, durability and flexibility, and are extremely excellent in processability.

The fibers, yarns and fiber products of the present invention are used for fisheries fixed nets used for long-term contact with seawater or freshwater, fish cages for livestock and fish, and seawater or freshwater filtration filters. Roads used for mooring buoys, 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. Further, the fiber, thread, and fiber product of the present invention can be applied not only in water, but also in socks, wallpaper, etc. using antibacterial and bactericidal activity against fungi and bacteria.

The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. Each physical property of the compounds in Examples, the intrinsic viscosity of polyester, and the contact angle of fibers were measured by the following methods. (1) Melting point and boiling point of compound (° C.) The melting point and boiling point (° C.) were measured according to JISK 6810 using a heating block type minute melting point measuring device and a Cottrell boiling point measuring device. (2) Viscosity of compound (centistokes: CS) The dynamic viscosity at a predetermined temperature, the intrinsic viscosity ([η]: dl / g) measured with an Ubbelohde viscometer, and the density (ρ: g)
Calculated by dividing by / cm ↑ 3). (3) Intrinsic viscosity of polyester (dl / g) It was measured with an Uberode viscometer in a constant temperature bath at 30 ° C. using a mixed solvent of phenol and tetrachloroethane. (4) Contact angle (degree) of water on the fiber surface Align the filaments, drop 0.2 ml of distilled water on the surface, and water by the swash plate method at a constant temperature of 25 ° C. and a constant humidity of 75% RH. Was measured. It measured 10 times and made the average value into the contact angle of water.

The adherence of aquatic organisms in Examples and Comparative Examples was visually evaluated according to the following criteria. Twisted yarn for 18 months from April to October of the following year, depth 1 in the Seto Inland Sea
The state of adhesion of marine organisms was examined by immersing it at a position of ~ 2 m. Stage 1: The entire surface area of the twisted yarn is covered by periphyton. 2: About 80% of the surface area of the twisted yarn is covered with attached organisms. 3: About 40% of the surface area of the twisted yarn is covered with attached organisms. 4: About 20% of the surface area of the twisted yarn is covered with attached organisms. 5: No attachment of organisms is observed.

Example 1 10% by weight of n-decane having a viscosity of 1.27 CS at 25 ° C., a melting point of −29.7 ° C. and a boiling point of 174 ° C., zinc dimethyldithiocarbamate (Succinole PZ, manufactured by Sumitomo Chemical Co., Ltd.) 10% by weight of low density polyethylene (Sumikasen G804: manufactured by Sumitomo Chemical Co., Ltd.) is kneaded with a Labo Plastomill to produce 100 twisted yarns of 10 times / m.
150 parts by weight of 100 parts by weight of 0 denier / 192 filaments of polyester filament were coated. The contact angle of water on the coated yarn was 103 degrees. Next, this was twisted into a rope having a diameter of 2 mm, and then a frog or net having a size of 5 cm was prepared. The hardness (rigidity) of the twisted yarn was examined, and the easiness of producing the obtained net was examined. The results are shown in Table 1. In addition, Table 1 shows the results of observing the state of adhesion of marine organisms.

Example 2 2,4,5,6 instead of zinc dimethylticarbamate
-Tetrachloroisophthalonitrile (Nopcoside N9
Polyethylene resin-coated yarn was obtained in the same manner as in Example 1 except that No. 6, manufactured by San Nopco Co., Ltd.) was used, and a net was prepared.
The contact angle of water on the coated yarn was 102 degrees. Table 1 shows the hardness of the twisted yarn, the easiness of forming the net, and the state of adhesion of marine organisms.

Example 3 Instead of n-decane, viscosity 52CS, melting point -7.5
A polyethylene resin-coated yarn was obtained in the same manner as in Example 1 except that liquid paraffin having a boiling point of 300 ° C. and a boiling point of 300 ° C. was used to prepare a net. The contact angle of water on the coated yarn is 10
It was 3 degrees. Table 1 shows the hardness of the twisted yarn, the easiness of forming the net, and the state of adhesion of marine organisms.

Comparative Example 1 A polyethylene resin-coated yarn was obtained in the same manner as in Example 1 except that zinc dimethyldithiocarbamate, which was an antifouling agent, was not added, and a net was prepared. The contact angle of water on the coated yarn was 102 degrees. Table 1 shows the hardness of the twisted yarn, the easiness of forming the net, and the state of adhesion of marine organisms.

Comparative Example 2 In Comparative Example 1, the viscosity was 52 C instead of n-decane.
A polyethylene resin-coated yarn was obtained in the same manner except that liquid paraffin having S, a melting point of −7.5 ° C., and a boiling point of 300 ° C. was used, and a net was prepared. The contact angle of water on the coated yarn was 108 degrees. Table 1 shows the hardness of the twisted yarn, the easiness of forming the net, and the state of adhesion of marine organisms.

Comparative Example 3 A polyethylene resin-coated yarn was obtained in the same manner as in Example 1 except that n-decane and zinc dimethyldithiocarbamate were not added, and a net was prepared. The contact angle of water on the coated yarn was 90 degrees. Table 2 shows the hardness of the twisted yarn, the ease of making the net, and the state of adhesion of marine organisms.

Comparative Example 4 A polyethylene resin-coated yarn was obtained in the same manner as in Example 1 except that n-decane was not added, and a net was prepared. The contact angle of water on the coated yarn was 88 degrees. Table 2 shows the hardness of the twisted yarn, the ease of making the net, and the state of adhesion of marine organisms.

Example 4 In Example 1, the viscosity at 25 ° C. was 52 CS and the melting point was −.
Liquid paraffin having a temperature of 7.5 ° C. and a boiling point of 300 ° C.
Polycaprolactone containing 10% by weight of diiodomethyl-p-trisulfone (Amical 48, manufactured by San-Apro) (Placcel H4, Daicel Chemical Industries Ltd.)
A resin-coated yarn was obtained in the same manner as described above, except that (Made in Japan) was used instead of the low-density polyethylene to prepare a net. The contact angle of water on the coated yarn was 107 degrees. Table 1 shows the hardness of the twisted yarn, the easiness of forming the net, and the state of adhesion of marine organisms.

Example 5 Nylon (1013B, manufactured by Ube Industries, Ltd.) was extruded with a 30Φ extruder, and a liquid paraffin having a melting point of −7.5 ° C., a boiling point of 300 ° C. and a viscosity of 52 CS was introduced into a molten resin line of the nylon. And a mixture of fine metal copper powder having an average particle size of 0.3 μ at a weight ratio of 70:30 was dried in advance at 120 ° C.,
After defoaming, the mixture was added to the nylon flow in an amount of 10% by weight, that is, 7% by weight of liquid paraffin and 3% by weight of fine metal copper powder, and then 42 element static mixer (ketone). -Knix)
It was extruded from a round hole nozzle at a die temperature of 295 ° C. and a take-up speed of 1000 m / min. Using a roller plate system, the spinning raw yarn was hot rolled at a temperature of 79 ° C. and a temperature of 15
It is stretched 3.5 times with a hot plate at 0 ° C. and 75 deniers.
A multifilament of 36/36 filaments was obtained. The contact angle of water on this filament was 102 degrees. Next, twist the yarn into a rope with a diameter of 2 mm, check the hardness (rigidity) of the obtained twisted yarn, and use this twisted yarn to make a frog or net with a size of 5 cm per eye, and check the ease of making. It was
The results are shown in Table 2. In addition, Table 2 shows the results of observation of the state of adhesion of marine organisms.

Example 6 In Example 5, polyethylene terephthalate ([PET] hereinafter) having [η] = 0.65 added with 0.45% by weight of TiO ↓ 2 was used in place of nylon, and liquid paraffin was used. A net was produced in the same manner except that a mixture of liquid paraffin and polydimethylsiloxane [mixing ratio: 20:80 (weight ratio)] was used instead of. The contact angle of water on the filament was 108 degrees. Table 2 shows the hardness of the twisted yarn, the ease of making the net, and the state of adhesion of marine organisms.

Comparative Example 5 In Example 3, the melting point was 7 instead of liquid paraffin.
A polyethylene-based resin-coated yarn was obtained in the same manner except that solid paraffin having a boiling point of 0 ° C. and a boiling point of 330 ° C. was used to prepare a net. The contact angle of water on the coated yarn was 105 degrees. Table 2 shows the hardness of the twisted yarn, the ease of making the net, and the state of adhesion of marine organisms.

[0042]

[Table 1]

[0043]

[Table 2]

From the results of Tables 1 and 2, the twisted yarn comprising the fiber of the present invention has no or extremely little adhesion of marine organisms even after 18 months, and can be used in seawater for a long period of time. . On the other hand, it is understood that the twisted yarn composed of the fiber containing only the antifouling agent has an insufficient effect of preventing the adhesion of aquatic organisms and cannot be used for a long period of time.

[0045]

The fiber, yarn, and fiber product of the present invention are
It is highly safe to seafood and the human body, has little elution and loss of inclusions from textile products, and is durable, and can prevent aquatic organisms from adhering for a long period of time. The fiber of the present invention,
Since the surface of yarns and textiles is smooth and highly flexible, it does not cause damage to the seafood that has been captured or cultivated, and can be used for twisting, warping, weaving, knitting, rope, etc. The workability at the time is good, and the workability at the time of use is extremely good.

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Claims (2)

(57) [Claims] 1. A liquid satisfying the following conditions (I) to (II):
1 to 50 % by weight of saturated hydrocarbon compound and 1 of antifouling agent
A fiber made of a thermoplastic resin containing 30 to 30% by weight and having a water contact angle of 90 degrees or more on the fiber surface. (I) Melting point is 40 ° C. or lower and boiling point is 120 ° C. or higher (II) Viscosity at 25 ° C. is 1000 centistokes or lower 2. A textile product containing the fiber according to claim 1.