JP2003089604A - Rat poison composition containing fine particle of highly water-absorbing polymer supporting rat poison and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an inexpensive rat poison composition which has excellent preservability, can readily be applied to an object by a known method such as printing and can stably exhibit function of a rat poison for a long period of time, and to provide a method for producing the same. SOLUTION: The rat poison composition containing fine particle of a highly water-absorbing polymer supporting the rat poison is obtained by (1) dissolving and/or dispersing the rat poison in water to prepare an aqueous solution and/or aqueous dispersion, (2) absorbing the aqueous solution and/or aqueous dispersion made by the process (1) in the fine particle of the highly water-absorbing polymer and (3) dispersing the fine particle of the highly water-absorbing polymer made by the process (2) into an oily dispersion medium.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rodent-proof composition containing superfine water-absorbing polymer particles carrying a rodent-proof agent and a method for producing the same.

[0002]

2. Description of the Related Art Rat damage has become a serious problem because the damage caused by biting and the damage caused by nesting, urination, etc., such as pollution and corrosion, are increasing year by year. In order to prevent these rodent damages, a number of measures using a rodent-repellent agent which is repellent by rats have been proposed so far [for example, as a rodent-proof agent, cycloheximide (JP 47-39626 A, JP 63-104902), terpenoid compounds (JP-A-3-146338, JP-A-3-244335) and capsaicins (JP-A-49-113292, JP-A-5-907). Issue)).

As a method of applying these rodent-proofing agents, a concentrated resin solution of the rodent-proofing agent has been applied to the surface of the packaging material, or the resin of the packaging base material has been mixed with the rodent-proofing agent. There is a problem that it is difficult to maintain the effect for a long period of time because it easily disappears from the surface of the substrate due to water-soluble, volatilization, peeling and the like. In order to solve these problems, a method of forming microcapsules by using a rodent-preventing agent as a core substance and a melamine resin, a urea resin, a polyester resin or the like as a wall material in a resin layer (Japanese Patent Laid-Open No. 61-155325). Gazette), liquids such as melts, solutions, emulsions and suspensions of thermoplastic resins such as polyester, polyamide, polyolefin and polyvinyl in which the rodent-proof microcapsules are dispersed by a dipping method or a gravure coating method. Which is attached to the surface of the rice and has air permeability for keeping freshness mainly for rice grains and fresh foods (Japanese Patent Publication No. 2-44801, JP-A-6-19962).
No. 0) has been proposed. However, there is a problem in that it is time-consuming and costly to produce a rodent-proofing agent-containing microcapsule.

[0004]

The first object of the present invention is to solve the conventional problems and to provide a rodent-preventing composition containing a rodent-proofing agent, which does not require the labor of microencapsulation and is inexpensive. A second object of the present invention is to provide a rodent-proof composition which has good storage stability and is capable of stably exerting the function of the rodent-proof agent for a long period of time by printing on an object. It is an object of the present invention to provide a method for easily producing such a rodent-proof composition.

[0005]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that, for example, a rodent-proofing agent is dissolved in water and the aqueous solution is absorbed by superabsorbent polymer fine particles to absorb the aqueous solution. It has been found that the problem can be solved by dispersing the superabsorbent polymer fine particles thus prepared in an oil dispersion medium, and the present invention has been accomplished.

[0006] A rodent-proof composition comprising superfine water-absorbing polymer particles carrying a rodent-proof agent according to claim 1 of the present invention for solving the above-mentioned problems is an aqueous solution and / or aqueous dispersion of a rodent-proof agent. It is characterized in that the absorbed superabsorbent polymer fine particles are dispersed in an oil dispersion medium.

[0007] A rodent-proof composition comprising the superabsorbent polymer fine particles carrying the rodent-proof agent according to claim 2 of the present invention is the rodent-proof composition according to claim 1, wherein the superabsorbent polymer fine particles are spherical. It is characterized by being fine particles.

A third aspect of the present invention includes the following steps (1) to (1).
(3) A method for producing a rodent-preventing composition containing super-water-absorbing polymer fine particles carrying a rodent-preventing agent, which is characterized by being produced according to (3). (1) An aqueous solution and / or an aqueous dispersion is prepared by dissolving and / or dispersing a rodent-proofing agent in water. (2) The superabsorbent polymer fine particles are allowed to absorb the aqueous solution and / or the aqueous dispersion prepared in the step (1). (3) The superabsorbent polymer fine particles prepared in step (2) are dispersed in an oil dispersion medium to prepare a rodent-proof composition containing the superabsorbent polymer particles carrying a rodent-proof agent.

A rodent-proof composition containing super-water-absorbent polymer fine particles carrying a rodent-proof agent of the present invention is, for example, a super-water-absorbent polymer fine particle obtained by absorbing an aqueous solution of a water-soluble rodent-proof agent in an oil dispersion medium. Since it is dispersed, it does not require the labor of microencapsulation and is inexpensive and has good preservability, and can be easily applied to a target object by a known method such as printing, and as a super absorbent polymer fine particle in a coating film. The absorbed rodent-proof agent is stably maintained and can exhibit the function of the rodent-proof agent stably for a long period of time, and it has a high effect of preventing rat bite damage. Be improved. According to the production method of the present invention, it is possible to easily produce a rodent-proof composition containing super-water-absorbing polymer particles carrying the rodent-proof agent of the present invention.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, the present invention will be described in detail based on the embodiments. FIG. 1 is an explanatory view schematically showing a state in which a rodent-preventing composition containing super-water-absorbing polymer particles carrying the rodent-proofing agent of the present invention is applied to an object. In FIG. 1, 1 is an object, 2 is a coating film, and 3 is superabsorbent polymer fine particles that have absorbed an aqueous solution and / or an aqueous dispersion of the rodent-proofing agent 4. The rodent-proofing agent 4 carried on the superabsorbent polymer fine particles 3 in the coating film 2 is stably maintained and has a sustained release effect, so that the function of the rodent-proofing agent 4 can be stably exhibited for a long period of time.

The superabsorbent polymer used in the present invention includes starch-based, cellulose-based, or synthetic resin-based polymers such as acrylamide, acrylic acid, acrylic acid salt, methacrylic acid salt, styrene and vinyl ether, and copolymers and terpolymers. And so on. As commercially available products, for example, nonionic polyalkylene oxide superabsorbent polymer "AQUACALK" (manufactured by Sumitomo Seika)
Since the water absorption does not change even with salt, it can be suitably used.

[0012] Among the superabsorbent polymers, there are water-soluble, pasty, or water-swellable particles, crushed particles, granules, and powders when they absorb water. Any of these can be used.

As the super absorbent polymer having a strip shape,
Specifically, an aqueous solution of a monomer containing acrylic acid and an ammonium salt of acrylic acid or an alkali metal salt is mixed with 0.
A moderately crosslinked superabsorbent polymer obtained by adding 1 to 10% by mass of a polyvalent organic metal ion crosslinking agent to aqueous solution polymerization and drying, or an ammonium salt or an alkali metal salt of acrylic acid and acrylic acid. Examples of the water-absorbing polymer which are obtained by post-crosslinking the copolymer of (1) with 0.1 to 10% by mass of a polyvalent organic metal ion crosslinking agent can be cited.

The superabsorbent polymer having a crushed, granular, or powdered state can be prepared by crushing the superabsorbent polymer into a predetermined particle shape, or from a raw material compound of the superabsorbent polymer. Examples thereof include a method of polymerizing or condensing to form a polymer compound in a granular form. Among them, spherical or granular polyacrylic acid salt obtained by reverse phase suspension polymerization in an organic solvent, a method of saponifying a vinyl alcohol / acrylic acid salt copolymer or an isobutylene / maleic anhydride copolymer. The resulting superabsorbent polymer (for example, average particle size of about 0.005 to 5 mm) is preferably used because even if water is absorbed, the particles remain non-adhesive to each other and maintain independent particles in a water-retaining state. it can.

A superabsorbent polymer which maintains independent particles even in a water-retaining state can absorb a large amount of an aqueous solution or an aqueous dispersion with high absorbency, and can be sticky or clumped even if absorbed. It is easy to use and easy to handle.

The particle size of the superabsorbent polymer fine particles used in the present invention is not particularly limited, and may be of the nm order (molecular dispersion system) depending on the application, type of product, or nm-μm. It may be of the order (colloidal dispersion system), or of μm or larger (coarse particle dispersion system), or a mixture of two or more thereof.

As the rodent-proofing agent used in the present invention, known ones can be used, and specifically, for example, 3- [2- (3,5)
Examples include -dimethyl-2-oxocyclohexyl) -2-hydroxyethyl] glutarimide, that is, cycloheximide, or capsaicins such as capsaicin and nonanoylvanillylamide. Among them, capsaicins which are not toxic to the human body can be preferably used.

The oil-based dispersant used in the present invention is a rodent-preventive composition by dispersing an aqueous solution in which a rodent-proofing agent is dissolved and / or dispersed in water and / or superabsorbent polymer fine particles in which an aqueous dispersion is absorbed. If you can prepare hexane,
Cyclohexane, carbon tetrachloride, chloroform, dichloromethane, dichloroethane, diethyl ether, 1,2-
Dimethoxyethane, tetrahydrofuran, 1.4-dioxane, ethyl acetate, N, N-dimethylformamide,
Hexamethylphosphoramide, acetone, acetonitrile, methanol, ethanol, nitromethane, dimityl sulfoxide, sulfolane, and other aliphatic solvents, and benzene, toluene, naphthalene, chlorobenzene, anisole, diphenyl ether, pyridine, and aromatic solvents such as nitrobenzene. It may be a molecular weight organic compound, an oligomer or a polymer, or a mixture of one or more of them, and is not particularly limited.

As another example of the oily dispersant used in the present invention, a non-aqueous vehicle can be mentioned. The non-aqueous vehicle may be the solvent, the non-aqueous ink or the like, or a mixture thereof, and is not particularly limited. Specific examples of the non-aqueous ink include albumin, gelatin, casein, starch, gum arabic, natural resins such as sodium alginate, cellulose derivatives such as carboxymethyl cellulose and hydroxyethyl cellulose, polyamide, polyacrylamide, polyhydroxyethyl methacrylate. , Polyphenylacetoacetal, polyethyleneimine, polyvinylpyrrolidone, polyvinylpyridinium halide, melamine resin, polyurethane, polyvinyl alcohol and its derivatives, polyester, sodium polyacrylate, synthetic resin such as acrylic acid ester copolymer, dimethylamine epichlorohydrin Polycondensate, acrylamide / diallylamine copolymer, polyvinylamine copolymer, dicyandiamide, dimethyl
An ink using a cationic resin such as a compound containing diallyl ammonium chloride as a main component or a mixture of two or more thereof can be mentioned. In addition, an electron beam curable ink, an ultraviolet curable ink, an anionic resin such as a rosin-modified maleic acid having an anionic group such as a sulfonic acid group, a carboxyl group, a sulfuric acid ester group, a phosphoric acid ester group or the like may be used as necessary. Can be used.

In the present invention, among these, electron beam curable ink and ultraviolet curable ink can be preferably used. Such electron beam curable and ultraviolet curable inks include
Any known acrylic photopolymerizable monomer and / or acrylic photopolymerizable oligomer can be arbitrarily selected and used.

Examples of the photopolymerizable monomer include unsaturated carboxylic acids such as acrylic acid and methacrylic acid or esters thereof, such as alkyl-, cycloalkyl-, halogenated alkyl-, alkoxyalkyl-, hydroxyalkyl- and aminoalkyl-. , Tetrahydrofurfuryl-, allyl-, glycidyl-, benzyl-, phenoxy-acrylates and methacrylates, alkylene glycols, polyoxyalkylene glycol mono- or diacrylates and methacrylates, trimethylolpropane triacrylate and methacrylates, pentaerythritol tetraacrylate and Acrylamide, methacrylamide, or derivatives thereof such as methacrylate, for example, acryl mono- or di-substituted with an alkyl or hydroxyalkyl group. Amide and methacrylamide, diacetone acrylamide and methacrylamide, N, N '
Allyl compounds such as alkylene bis acrylamide and methacrylamide, such as allyl alcohol, allyl isocyanate, diallyl phthalate, triallyl isocyanurate and the like.

In the case where the curing shrinkage is an obstacle, for example, isobornyl acrylate or methacrylate, norbornyl acrylate or methacrylate, dicyclopentenoxyethyl acrylate or methacrylate, dicyclopentenoxypropyl acrylate or Acrylate or methacrylic acid ester of diethylene glycol dicyclopentenyl monoether such as methacrylate, polyoxyethylene or polypropylene glycol dicyclopentenyl monoether acrylic acid ester or methacrylic acid ester, such as dicyclopentenyl cinnamate, dicyclopentenoxy Ethyl cinnamate, dicyclopentenoxyethyl monofumarate or difumarate such as 3,9-bis (1,1
-Bismethyl-2-oxyethyl) -spiro [5,5]
Undecane, 3,9-bis (1,1-bismethyl-2-
Oxyethyl) -2,4,8,10-tetraoxaspiro [5,5] undecane, 3,9-bis (2-oxyethyl) -spiro [5,5] undecane, 3,9-bis (2-oxyethyl) Mono-, diacrylate or mono-, dimethacrylate such as -2,4,8,10-tetraoxaspiro [5,5] undecane, or mono-, ethylene oxide or propylene oxide addition polymer of these spiroglycols, Diacrylate, mono- or dimethacrylate, or methyl ether of the monoacrylate or methacrylate, 1-azabicyclo [2,2,2] -3-octenyl acrylate or methacrylate, bicyclo [2,2,1] -5 -Heptene-2,3-dicarboxyl monoallyl ester, such as dicyclopenta Enyl acrylate or methacrylate, it can be used a photopolymerizable monomer, such as dicyclopentadienyl oxyethyl acrylate or methacrylate, dihydrodicyclopentadienyl acrylate or methacrylate. These photopolymerizable monomers may be used alone or in combination of two or more.

As the acrylic photopolymerizable oligomer,
Acrylic acid ester of epoxy resin such as diglycidyl ether diacrylate of bisphenol A, reaction product of epoxy resin with acrylic acid and methyltetrahydrophthalic anhydride, reaction product of epoxy resin with 2-hydroxyethyl acrylate, glycidyl diacrylate Ring-opening copolymerization ester of acrylate and phthalic anhydride, ester of methacrylic acid dimer and polyol, polyester obtained from acrylic acid, phthalic anhydride and propylene oxide, reaction product of polyvinyl alcohol and N-methylolacrylamide An unsaturated polyester prepolymer such as a reaction product of polyethylene glycol, maleic anhydride and glycidyl methacrylate, or the like, after esterifying polyvinyl alcohol with succinic anhydride,
Such as polyvinyl alcohol prepolymers such as those with glycidyl methacrylate added, reaction products of methyl vinyl ether-maleic anhydride copolymer and 2-hydroxyethyl acrylate, or those further reacted with glycidyl methacrylate Polyacrylic acid or maleic acid copolymer-based prepolymers, etc., as well as urethane-based prepolymers having acryloyl groups or methacryloyl groups at both ends linked to polyoxyalkylene segments and / or saturated polyester segments via urethane bonds, etc. Can be mentioned. These acrylic photopolymerizable oligomers are
A weight average molecular weight of about 2000 to 30,000 is suitable.

The photopolymerization initiator may be a conventionally known one, for example, 1-hydroxy-cyclohexyl-phenyl-ketone, 2-hydroxy-2-methyl-1.
-Phenyl-propan-1-one, 1- [4- (2-hydroxyethoxy) -phenyl] -2-hydroxy-methyl-1-propan-1-one, 2-methyl-1- [4
-(Methylthio) phenyl] -2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1
-(4-morpholinophenyl) -butanone-1-bis (2,6-dimethoxybenzoyl) -2,4,4-trimethyl-pentylphosphine oxide-bis (2,2
4,6-trimethylbenzoyl) -phenylphosphine oxide and the like can be mentioned. These photopolymerization initiators may be used alone or in combination of two or more. Its content is usually 10 vehicles.
It is preferably selected in the range of 5 to 15 parts by mass per 0 parts by mass.

The rodent-preventing composition containing super-water-absorbing polymer fine particles carrying the rodent-proofing agent of the present invention has the following steps (1) to (1).
It can be easily manufactured by (3). First, in step (1), an aqueous solution and / or aqueous dispersion is prepared by dissolving and / or dispersing a rodent-proofing agent in water. In the present invention, a surfactant may be used when the rodent-proofing agent is dispersed in water, but the kind of the surfactant, HLB, the amount used, etc. are not particularly limited, and an anionic surfactant, Any of an ionic surfactant, a cationic surfactant and an amphoteric surfactant can be used. The amount of the rodent proofing agent added to water is not particularly limited as long as it can be stably maintained and the performance of the rodent proofing agent can be exhibited. It may be added in an amount not less than the amount required to form a saturated aqueous solution, or an amount added so that the dispersion state can be stably maintained. The method and apparatus for dissolving or dispersing in water are not particularly limited, and known ones can be used.

Next, in step (2), the aqueous solution and / or the aqueous dispersion prepared in step (1) is absorbed by superabsorbent polymer fine particles. The absorption amount is not particularly limited as long as it is a small amount, a saturated amount, or a saturated amount or more as long as the absorption amount can be stably maintained and the performance of the rodenticide can be exhibited. The absorbing method and device are not particularly limited, and known ones can be used.

Then, in step (3), the rodent-proof composition containing the super-water-absorbing polymer fine particles carrying the rodent-proofing agent by dispersing the super-water-absorbing polymer fine particles prepared in step (2) in an oil dispersion medium. make. At this time, the dispersion amount is not particularly limited as long as it can be stably maintained. The method and device for dispersing are not particularly limited, and known ones can be used.

The rodent-proof composition of the present invention is, for example, brushed, roll-coated, kiss coat, wheeler coat, spray method, curtain coating method, dipping method, electrostatic coating method, gravure coater, gravure offset coater,
Flat plate offset coater, dilitho coater, flexo, air knife coater, bar coater, letterpress printing, intaglio printing, silk screen printing, etc. , Can be cured to form a coating film that adheres to an object.

The object used in the present invention may be an organic material, an inorganic material, or a combination thereof, and may be a naturally derived material, a synthetic material, or a combination thereof. Specifically, for example, ordinary paper other,
Synthetic paper or a synthetic film of polyethylene, polyethylene terephthalate having transparency, polypropylene, vinyl chloride or the like can also be used, and carbon, glass, ceramics, metal, wood, or combinations thereof, and processed products thereof, etc. Can be mentioned. In order to improve the adhesion of the coating film, the surface of these objects can be subjected to surface treatment such as matting treatment and corona treatment. The amount of coating on the surface of the object is not particularly limited, but an example of about 1 to 30 g / m ² can be given.

The rodent-proof composition of the present invention contains the known fillers such as silica, alumina and mica, carbon powders, pigments, dyes, polymerization inhibitors, thickeners and thixotropic agents within the range that does not impair the effects of the present invention. , A precipitation inhibitor, an antioxidant, a dispersant, a surfactant and the like can be added.

Since the present invention is not limited to the above embodiment, various modifications can be made without departing from the spirit of the claims.

[0032]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. (Example 1) Rodent-proofing agent [dispersion liquid of nonic acid vanidolyl amide dispersed in water (nonionic acid vanillyl amide 30% by weight aqueous dispersion)] Keep 10SH-P (manufactured by Sumitomo Seika Co., Ltd.)] 100 parts by mass. 80 parts by mass of a photopolymerization initiator [VICURE 55 (manufactured by Akzo Nobel)] was dissolved in 920 parts by mass of trimethylolpropane EO-added triacrylate [V # 360 (manufactured by Osaka Organic Chemical Industry Co., Ltd.)]. A coating liquid containing the superabsorbent polymer fine particles of the present invention was prepared by uniformly dispersing the liquid in the liquid. This coating solution was printed on a sheet of paper using a rotary screen printer so that the coating amount was 20 g / m ^2, and the coating film was cured by UV irradiation. The obtained paper was found to be a value-added one that functions as a rodent-proof sheet for a long period of time.

[0033]

EFFECT OF THE INVENTION A rodent-proofing composition containing super-water-absorbing polymer particles carrying a rodent-proofing agent according to claim 1 of the present invention is a highly water-absorbing agent containing an aqueous solution and / or dispersion of a rodent-proofing agent. Since polymer fine particles are dispersed in an oil-based dispersion medium, it does not require the labor of microencapsulation, is inexpensive, has good storage stability, and can be easily applied to a target object by a known method such as printing, and has a high content in the coating film. The rodent-proofing agent absorbed in the water-absorbent polymer fine particles is stably maintained, and the function of the rodent-proofing agent can be stably exerted for a long period of time without the irritation etc. being scattered and moving to another place.
The mouse is highly effective in preventing biting damage, and the skin irritation of the anti-mouse agent is reduced, so that the mouse is relatively safe and the handleability is improved.

The rodent-proofing composition according to claim 2 of the present invention is
In the rodent-proof composition according to claim 1, since the superabsorbent polymer fine particles are spherical fine particles, the same effect as that of the rod-proof agent composition according to claim 1 can be obtained, and even when water is absorbed, they do not mutually stick In addition to being excellent in handleability, it has a further remarkable effect of being excellent in smoothness of the coating film surface.

By the production method according to claim 3 of the present invention, there is a remarkable effect that the rodent-proof composition of the present invention can be easily produced.

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing a condition in which a rodent-preventing composition containing superfine water-absorbing polymer particles carrying a rodent-proofing agent of the present invention is applied to an object.

[Explanation of symbols]

1 Target 2 Coating Film 3 Superabsorbent Polymer Fine Particles Absorbing Aqueous Solution and / or Water Dispersion of Rodenticide 4 Rodenticide

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) C08L 101/14 C08L 101/14 F term (reference) 4F070 AA02 AA03 AA29 AA36 AA52 AB13 AC45 AC47 AE10 AE30 CA01 CB05 4H011 AE01 AE02 BA01 BB06 BC19 DA14 DH25 4J002 AB011 AB041 BG011 BG131 CH021 EP016 EU036 GC00 HA08

Claims (3)

[Claims] 1. A superabsorbent polymer fine particle carrying a rodent-proofing agent, characterized in that the superabsorbent polymer fine particle absorbing an aqueous solution and / or an aqueous dispersion of a rodent-proofing agent is dispersed in an oil dispersion medium. A rodent-proofing composition containing. 2. The rodent-preventing composition according to claim 1, wherein the superabsorbent polymer fine particles are spherical fine particles. 3. A method for producing a rodent-proof composition comprising super-water-absorbing polymer particles carrying a rodent-proof agent, which is produced by the following steps (1) to (3). (1) An aqueous solution and / or an aqueous dispersion is prepared by dissolving and / or dispersing a rodent-proofing agent in water. (2) The superabsorbent polymer fine particles are allowed to absorb the aqueous solution and / or the aqueous dispersion prepared in the step (1). (3) The superabsorbent polymer fine particles prepared in step (2) are dispersed in an oil dispersion medium to prepare a rodent-proof composition containing the superabsorbent polymer particles carrying a rodent-proof agent.