JPH10102008A - Adhesive composition for fishline - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an ahdesive composition for a fishline easy-to-handle capable of dissolving the problem of breaking by flexural stress caused by lowering the flexural stress resistance by the adhesion and further capable of reinforcing the knotted part of the fishline by adding a plasticizer to 2-cyanoacrylate. SOLUTION: This adhesive composition consists essentially of (A) 2- cyanoacrylate (preferably a lower alkoxyalkyl 2-cyanoacrylate such as methoxyethyl 2-cyanoacrylate) and further includes a plasticizer (preferably an acetyl citrate such as acetyl tributyl citrate). The component B is preferably included in 10-30wt.% based on the total amount of the components A and B. The objective composition preferably includes a stabilizer and a polymerization accelerator. A boron trifluoride complex is preferable as the stabilizer. A silacrown ether is represented as the polymerization accelerator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive composition for fishing lines, and to an adhesive manufacturing technology and an adhesive application technology.

[0002]

2. Description of the Related Art In general, when fishing, a mechanism is used in which a hook for catching a fish is connected to a fishing line and a connecting bracket. In order to make the device, it is necessary to perform operations such as connection between fishing lines, connection between a fishing line and a fishing hook, and connection between a fishing line and a connection fitting. In the past, these connections were merely tied, and pulling on both ends of the tie often caused it to loosen or break from the knot. It is considered that the reason why the fishing line is unwound is that the line wetted with water becomes slippery and is released by the restoring force of the line itself. Further, it is considered that a cause of the breakage of the fishing line is that when the tied line is pulled, the knot line is tightened and a part thereof becomes extremely thin and the strength is weakened, so that the fishing line is broken.

In order to avoid these phenomena, Japanese Unexamined Patent Publication No.
As described in JP-A-134680, there is known a method in which a knot is fixed with an adhesive to prevent the knot from being untied, and to prevent the knot from being tightened even if it is strongly pulled. As an adhesive used for this purpose, a 2-cyanoacrylate adhesive is generally used. The reasons are that they have instant adhesive performance and are excellent in workability even at a fishing spot, have high adhesive strength, and are easy to penetrate into a knot due to low viscosity. However, with the conventional 2-cyanoacrylate adhesive, when the knot fixed with this adhesive is strongly pulled, the adhesive hardened portion is destroyed, and the small pieces damage the fishing line and reduce the strength of the fishing line itself, Another problem is that the bending stress resistance of the fishing line itself is reduced by an adhesive coating and the fishing line is broken by bending stress.

[0004]

DISCLOSURE OF THE INVENTION The present inventors have developed a conventional
The research was conducted to solve the above-mentioned problems of the 2-cyanoacrylate-based adhesive and to provide an excellent fishing line adhesive.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, by adding a plasticizer to 2-cyanoacrylate, it is possible to further improve a specific stabilizer or a polymerization accelerator. It has been found that the composition obtained by adding the agent is a composition having good workability and capable of reinforcing the knot of the fishing line, and has completed the present invention.

That is, the present invention relates to an adhesive composition for fishing lines, comprising a plasticizer and 2-cyanoacrylate as a main component, and an alkoxyalkyl 2-cyanoacrylate containing a plasticizer. The present invention relates to a fishing line adhesive composition characterized by containing acrylate as a main component, and further relates to an acetyl citrate ester as a stabilizer, a polyalkylene oxide and a derivative thereof as a polymerization accelerator, and a crown ether and a derivative thereof, respectively. The present invention relates to a fishing line adhesive composition characterized by containing at least one compound selected from the group consisting of:

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the adhesive composition of the present invention will be described in detail. Specific examples of 2-cyanoacrylate which is a main component of the composition used in the present invention include the following. That is, methyl, ethyl, n-propyl, i-propyl, propargyl, n-butyl, i-butyl, n-pentyl, n-
Hexyl, 2-ethylhexyl, n-octyl, n-nonyl,
n-decyl, n-dodecyl, allyl, ethynyl, 2-butenyl, cyclohexyl, phenyl, phenethyl, chloroethyl, 2,2,2-trifluoroethyl, hexafluoroisopropyl, methoxyethyl, ethoxyethyl, propoxyethyl, isopropoxyethyl , Butoxyethyl, hexyloxyethyl, 2-ethylhexyloxyethyl, butoxyethoxyethyl, hexyloxyethoxyethyl, 2-
Examples include, but are not limited to, esters such as ethylhexyloxyethoxyethyl, methoxypropyl, methoxypropoxypropyl, methoxypropoxypropoxypropyl, ethoxypropyl, ethoxypropoxypropyl, and tetrahydrofurfuryl. Of these, preferred 2-cyanoacrylate is ethyl 2-
Cyanoacrylate, propyl 2-cyanoacrylate,
It is a lower alkyl 2-cyanoacrylate such as i-propyl 2-cyanoacrylate and a lower alkoxyalkyl 2-cyanoacrylate such as methoxyethyl 2-cyanoacrylate and ethoxyethyl 2-cyanoacrylate. Particularly preferred for the present invention is methoxyethyl 2-
Lower alkoxyalkyl 2-cyanoacrylates such as cyanoacrylate and ethoxyethyl 2-cyanoacrylate; These 2-cyanoacrylates are used alone or in combination in the present invention.

As the plasticizer used in the present invention, known plasticizers can be widely used. However, in order to achieve the object of the present invention, it is necessary that the adhesive easily penetrates into the knot of the fishing line. For preference, low viscosity plasticizers are preferred for the present invention. Specifically, as a phosphate ester system, tributyl phosphate, tri-2-ethylhexyl phosphate,
There are triphenyl phosphate, tricresyl phosphate, etc., and as phthalate esters, dimethyl phthalate, diethyl phthalate, dibutyl phthalate, diheptyl phthalate, di-n-octyl phthalate, di-2-ethylhexyl phthalate,
There are diisononyl phthalate, octyl decyl phthalate, diisodecyl phthalate, butyl pentyl phthalate, etc.
Examples of the sebacate ester type include dibutyl sebacate and 2-ethylhexyl sebacate, and examples of the oxyacid ester type include acetyl citrate ester, but are not limited thereto. Among these, preferred plasticizers are phthalic esters such as dimethyl phthalate, diethyl phthalate and dibutyl phthalate, and acetyl citrates such as tributyl acetyl citrate, and particularly preferred are those such as tributyl acetyl citrate. Acetyl citrate.

The amount of the plasticizer in the composition of the present invention is preferably from 5% by weight to 40% by weight, more preferably from 5% by weight to 40% by weight, based on the total amount of both the plasticizer and 2-cyanoacrylate. It is in the range of 10% to 30% by weight. If the amount of the plasticizer is less than 5% by weight, a sufficient reinforcing effect cannot be obtained.

The adhesive composition of the present invention contains various commonly used additives, and it is particularly preferable to use the following stabilizers and polymerization accelerators in combination. [Stabilizer] As a polymerization inhibitor for improving storage stability, for example, hydroquinone and sulfurous acid gas are generally widely used, and they can be used in the present invention. A preferred stabilizer is a boron trifluoride complex. The object of the present invention can be easily achieved by using a boron trifluoride complex as a stabilizer. [Polymerization Accelerator and Initiator] In order to increase the bonding speed, anionic polymerization accelerators such as silacrown ethers and derivatives thereof, calixarene derivatives and the like, and radical initiators such as hydroperoxides, peroxyesters, ketone peroxides, Organic peroxides such as peroxyketals, dialkyl peroxides, diacyl peroxides and peroxydicarbonates are added.As the anionic polymerization accelerator, when using a polyalkylene oxide and its derivative or crown ether and its derivative, The surface drying property of the adhesive improves,
An excellent fishing line adhesive composition can be obtained. [Other additives] The fishing line adhesive is desirably a low-viscosity product. In some cases, as a thickening agent, for example, homopolymers or copolymers of various (meth) acrylates, acrylic rubber, cellulose derivatives, silica, etc. Can be dissolved or dispersed to form a viscous liquid or a liquid having a thixotropic property, and additives such as a dye, a pigment, and a diluent can be blended.

[0011]

The present invention will be described in more detail with reference to the following Examples and Comparative Examples, but the present invention is not limited to these Examples. Examples 1 to 7 and Comparative Examples 1 to 6 Adhesives having the compositions shown in Table 1 were prepared by a conventional method.
In addition, in addition to the stabilizers shown in the table, a hydroquinone stabilizer was used at 1500 ppm for the adhesives 1 to 10, and 600 ppm for the adhesives 11 to 14. In the table, TBAC indicates acetyl tributyl citrate, and DMP indicates dimethyl phthalate.

[0012]

[Table 1]

The properties of the adhesive having the above composition were measured by the following procedures, and the results are shown in Table 2 to evaluate the composition of the present invention. ○ Surface Drying Test No. 5 chemical fiber fishing line was tied by train, reinforced with an adhesive, and the time until the tackiness of the fishing line surface by the adhesive was eliminated was measured. -Knot tensile strength test No. 5 fishing line made of chemical fiber was tied by train, reinforced with an adhesive, and the tensile strength at a tensile speed of 100 mm / min was measured.

[0014]

[Table 2]

As is clear from Table 2, the adhesive comprising the composition of the present invention has good surface drying properties and, when applied to the knot of a fishing line, has a high tensile strength and a high reinforcing effect.
On the other hand, the adhesives of the compositions shown in Comparative Examples are inferior to those of the composition of the present invention, such as poor surface drying properties or low tensile strength, and their superiority is apparent.

[0016]

The fishing line adhesive composition of the present invention has good workability and is excellent in reinforcing the knot of the fishing line, and is used efficiently in fishing as fishing and leisure. It is a great place to contribute to their development.

Claims (4)

[Claims] 1. An adhesive composition for fishing lines, comprising a plasticizer and 2-cyanoacrylate as a main component. 2. The fishing line adhesive composition according to claim 1, wherein the 2-cyanoacrylate is an alkoxyalkyl 2-cyanoacrylate. 3. The adhesive composition for fishing lines according to claim 2, which contains acetyl citrate as a stabilizer. 4. The fishing line adhesive composition according to claim 3, wherein the polymerization accelerator contains one or more compounds selected from polyalkylene oxides and derivatives thereof and crown ethers and derivatives thereof.