WO2008153166A1 - Method for producing insect-controlling agent-containing resin composition and method for producing filaments - Google Patents

Method for producing insect-controlling agent-containing resin composition and method for producing filaments Download PDF

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Publication number
WO2008153166A1
WO2008153166A1 PCT/JP2008/060925 JP2008060925W WO2008153166A1 WO 2008153166 A1 WO2008153166 A1 WO 2008153166A1 JP 2008060925 W JP2008060925 W JP 2008060925W WO 2008153166 A1 WO2008153166 A1 WO 2008153166A1
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Prior art keywords
insect
resin composition
controlling agent
weight
filaments
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PCT/JP2008/060925
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French (fr)
Inventor
Susumu Ejiri
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Sumitomo Chemical Co Ltd
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Sumitomo Chemical Co Ltd
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Priority to AP2009005068A priority Critical patent/AP2981A/en
Priority to CN2008800196965A priority patent/CN101702914B/en
Publication of WO2008153166A1 publication Critical patent/WO2008153166A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/34—Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
    • A01N25/10—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/005—Stabilisers against oxidation, heat, light, ozone
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0058—Biocides
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethylene

Definitions

  • the present invention relates to a method for producing an insect-controlling agent-containing resin composition and a method for producing filaments.
  • Resin compositions comprising insect-controlling agents and polyethylene-based resins are processed into various shaped articles for use as materials for controlling insects such as ticks, sucking lice, mosquitoes, flies, etc.
  • JP-A-6- 315332 Patent Publication 1
  • JP-A-8- 302080 Patent Publication 2
  • JP-A-8- 302080 Patent Publication 2
  • Patent Publication 1 JP-A-6-315332
  • Patent Publication 2 JP-A-8-302080
  • a resin composition comprising an insect-controlling agent and a polyethylene-based resin
  • a support an insect-controlling agent and, if needed, other additives
  • an insect-controlling agent- containing support comprising the support
  • the insect- controlling agent and, if needed, other additives supported on the support is previously prepared and the insect- controlling agent-containing support is blended with a polyethylene-based resin.
  • the resin composition produced by a conventional production method comprising the step of blending the insect-controlling agent-containing support with the polyethylene-based resin has difficulties in the shaping of filaments thereof such as cutting of the filaments, and therefore is insufficient in its shaping property.
  • an object of the present invention is to provide a method for producing a resin composition, the use of the resin composition for shaping of filaments being effective to decrease a filament-cutting freguency in process of shaping the filaments of the resin composition.
  • Another object of the invention is to provide a method for producing filaments, using the resin composition produced by the method.
  • the present invention relates to a method for producing an insect-controlling agent-containing resin composition, which comprises melt-mixing 100 parts by weight of a polyethylene-based resin, 0.1 to 100 parts by weight of an insect-controlling agent-containing support and 0.01 to 10 parts by weight of an antioxidant at a temperature of 160 to 300 0 C.
  • the present invention relates to a method for producing filaments, which comprises melt-spinning a resin composition obtained by melt-mixing a polyethylene- based resin with a resin composition produced by the above- described method at a temperature of 160 to 300 0 C, or the resin composition produced by the above-described method.
  • a method for producing a resin composition the use of the same resin composition for shaping filaments being effective to decrease a filament-cutting frequency in process of shaping the filaments; and a method for producing filaments, using the resin composition produced by the method.
  • the insect-controlling agent-containing support is produced by blending an insect-controlling agent with a support.
  • insect-controlling agent include insect-controllable compounds such as insecticides, insect growth-controlling agents, insect-repelling agents, etc.
  • insecticides include pyrethroid-based compounds, organophosphorus-based compounds, carbamate- based compounds, phenyl pyrazole-based compounds, etc.
  • pyrethroid-based compounds include permethrin, allethrin, d-alethrin, dd-alethrin, d- tetramethrin, prallethrin, cifenothrin, d-pfenothrin, d- resmethrin, empenthrin, fenvalerate, esfenvalerate, fenpropathrin, cyhalothrin, cyfluthrin, etofenprox, tralomethrin, esbiothrin, benfluthrin, terallethrin, deltamethrin, cypermethrin, fenothrin, tefluthrin, bifenthrin
  • organophosphorus- based compounds examples include fenitrothion, dichlorovos, naled, fenthion, cyanophos, chlorpyrifos, diazinon, carcrofos, salithion, diazinon, etc.
  • carbamate-based compounds examples include methoxydiazon, propoxur, fenobucarb, carbaryl, etc.
  • phenyl pyrazole-based compound include fipronyl, etc.
  • insect growth-controlling agent examples include pyriproxfen, methoprene, hydroprene, diflubenzuron, cyromazine, phenoxycarb, lufenuron (CGA 184599), etc.
  • insect-repelling agent examples include diethyl-toluamide, dibutyl phthalate, etc.
  • Each of these insect-controlling agents may be used alone, or at least two selected therefrom may be used as a mixture.
  • the insect-controlling agent the insecticides are preferable, and the pyrethroid-based compounds are more preferable. Some of the pyrethroid-based compounds, showing vapor pressures of lower than 1 X 10 ⁇ 6 mmHg at 25 0 C, are still more preferable. As the pyrethroid-based compounds which show vapor pressures of lower than 1 X 10 "6 mmHg at 25°C, resmethrin, permethrin, etc. are exemplified.
  • a support capable of supporting the insect-controlling agent is used.
  • the support include silica-based compounds, zeolites, clay minerals, metal oxides, micas, hydrotalcites, organic supports, etc.
  • silica-based compounds amorphous silica and crystalline silica are exemplified, and examples thereof include silicic acid powder, fine silicic acid powder, acidic china clay, diatom earth, quartz, white carbon, etc.
  • zeolites A type zeolite, mordenite, etc. are given.
  • clay minerals montmorillonite, saponite, bidellite, bentonite, kaolinate, halloysite, nacrite, deckite, anauxite, illite, sericite, etc. are given.
  • metal oxides zinc oxide, magnesium oxide, aluminum oxide, iron oxide, copper oxide, titanium oxide, etc. are given.
  • mica, mica, vermiculite, etc. are given.
  • hydrotalcites, smectite, etc. are given.
  • charcoals charcoal, marl, grass peat, etc.
  • polymer beads microcrystal cellulose, polystyrene beads, acrylate beads, methacrylate beads, polyvinyl alcohol-based beads, etc.
  • perlite, gypsum, ceramics, volcanic rocks, etc. are given.
  • the support amorphous inorganic compounds are preferable, and amorphous silica is more preferable.
  • the amount of the support to be blended is usually from 10 to 400 parts by weight based on 100 parts by weight of the insect-controlling agent.
  • Examples of the polyethylene-based resin to be melt- blended with the insect-controlling agent-containing support include a high-pressure-processed low density polyethylene, a high density polyethylene, a linear low density polyethylene, an ultralow density polyethylene, etc., and these polyethylene-based resins may be used alone, or two or more kinds of them may be used in combination.
  • the high-pressure-processed low density polyethylene is produced by polymerizing ethylene at a high temperature under a high pressure, using a radical-generating agent.
  • radical-generating agent examples include organic peroxides such as di-t-butyl peroxide, t-butyl hydroperoxide, t-butyl-peroxy-2-ethyl hexanate, dicumyl peroxide, t-butylperoxyisopropyl carbonate, t-butylperoxy benzoate, di-t-amyl peroxide, cumyl hydroperoxide, t- butylperoxy pivalate, etc. and oxygen.
  • organic peroxides such as di-t-butyl peroxide, t-butyl hydroperoxide, t-butyl-peroxy-2-ethyl hexanate, dicumyl peroxide, t-butylperoxyisopropyl carbonate, t-butylperoxy benzoate, di-t-amyl peroxide, cumyl hydroperoxide, t- butylperoxy pivalate, etc. and oxygen.
  • the high density polyethylene, the linear low density polyethylene and the ultralow density polyethylene are produced by a known polymerization process such as the solution polymerization process, the slurry polymerization process, the vapor phase polymerization process, the high- pressure ionic polymerization process or the like, using a known olefin polymerization catalyst such as a Ziegler- Natta catalyst, a chromium-based catalyst, a metallocene- based catalyst or the like.
  • This polymerization process may be of batch type or of continuous type, or may be a multi-step polymerization process comprising two or more steps .
  • the following catalysts (1) and (2) are given: (1) a catalyst which comprises a component obtained by supporting at least one selected from the group consisting of titanium trichloride, vanadium trichloride, titanium tetrachloride and haloalcoholate on a magnesium-based compound, and an organic metal compound as a co-catalyst, and
  • a catalyst which comprises a co-precipitate or an eutectic crystal of a magnesium compound and a titanium compound, and an organic metal compound as a co-catalyst
  • the chromium-based catalyst for example, a catalyst which comprises a component obtained by supporting a chromium compound on silica or silica-alumina, and an organic metal compound as a co-catalyst is given.
  • the metallocene-based catalyst for example, the following catalysts (1) to (4) are given: (1) a catalyst which comprises a component containing a transition metal compound having a cyclopentadiene framework, and a component containing an almoxane compound, (2) a catalyst which comprises the above transition metal compound-containing component and a component containing an ionic compound such as trityl borate, anilinium borate or the like, (3) a catalyst which comprises the above transition metal compound-containing component, the above ionic compound- containing component and a component containing an organic aluminum compound, and (4) a catalyst obtained by supporting or incorporating the above respective components on or into a particle-shaped inorganic compound such as Si ⁇ 2, Al 2 O 3 or the like, or a particle-shaped polymer such as an olefin polymer of ethylene, styrene or the like.
  • the melt flow rate (MFR) of the polyethylene-based resin is usually from 0.1 to 50 g/10 mins. When this MFR is too high, the filament-cutting frequency tends to increase.
  • the MFR is preferably not larger than 40 g/10 mins., more preferably not larger than 30 g/10 mins.
  • the MFR is preferably not smaller than 0.3 g/10 mins., more preferably not smaller than 0.5 g/10 mins. from the viewpoint of decrease of burden on a motor of an extruder upon melt-blending.
  • the MFR is measured under the conditions of a load of 21.18 N and a temperature of 190 0 C according to the method regulated in JIS K7210-1995.
  • the density of the polyethylene-based resin is usually from 900 to 965 kg/m 3 . It is preferably from not lower than 905 kg/m 3 , more preferably not lower than 910 kg/m 3 , from the viewpoint of improvement of the insect-controlling property of the filaments. It is preferably not higher than 960 kg/m 3 , more preferably not higher than 955 kg/m 3 , from the viewpoint of a decrease in the filament-cutting frequency. In this regard, this density is measured according to a method regulated in the method A among the methods of JIS K7112-1980, using a test piece annealed according to JIS K6760-1995.
  • antioxidants phenol-based antioxidants, phosphorus-based antioxidants, sulfur-based antioxidants, etc. are given.
  • phenol-based antioxidants examples include 2,6- di-t-butyl-4-methylphenol (BHT), n-octadecyl-3- (3, 5-di-t- butyl-4-hydroxyphenyl) propionate (Irganox® 1076 manufactured by Ciba Specialty Chemicals K.K.), pentaerythrityl-tetrakis [3- (3, 5-di-t-butyl-4- hydroxyphenyl) propionate] (Irganox® 1010 manufactured by Ciba Specialty Chemicals K.K.), 1 , 3, 5-tris (3, 5-di-tert- butyl-4-hydroxybenzyl) isocyanurate (Irganox® 3114 manufactured by Ciba Specialty Chemicals K.K.), 1,3,5- trimethy1-2, 4, 6-tris (3, 5-di-t-butyl-4-hydroxybenzyl) benzene, 3, 9-bis [2- ⁇ 3- (3-t-but
  • Examples of the phosphorus-based antioxidants include distearylpentaerythritol diphosphite (ADK STAB® PEP8), tris (2, 4-di-tert-butylphenyl) phosphite (Irgafos® 168 manufactured by Ciba Specialty Chemicals K.K.), bis(2,4-di- tert-butylphenyl)pentaerythritol diphosphite, tetrakis (2, 4- di-tert-butylphenyl) 4,4' -biphenylene diphosphonite (Sandostab® P-EPQ manufactured by Clariant (Japan) K.K.), bis (2-t-butyl-4-methylphenyl) pentaerythritol diphosphite, etc.
  • ADK STAB® PEP8 distearylpentaerythritol diphosphite
  • tris 2, 4-di-tert-
  • antioxidant having both of a phenol structure and a phosphorus structure
  • examples of an antioxidant having both of a phenol structure and a phosphorus structure include 6- [3- (3-tert- butyl-4-hydroxy-5-methyl) propoxy] -2,4,8, 10-tetra-tert- butyldibenz [d, f] [1, 3, 2] -dioxaphosphebine (Sumilizer® GP manufactured by Sumitomo Chemical Company, Limited), etc.
  • Example of the sulfur-based antioxidant include 4,4'- thiobis (3-methyl-6-tert-butylphenol) (Sumilizer® WXR manufactured by Sumitomo Chemical Company, Limited), 2,2- thiobis- (4-methyl-6-tert-butylphenol) (IRGANOX® 1081 manufactured by Ciba Specialty Chemicals K.K.), etc.
  • antioxidants examples include vitamin E, vitamin A, etc.
  • antioxidants are antioxidants having phenol structures, and more preferable antioxidants are phenol- based antioxidants. Still more preferable antioxidant is a propionate ester having a phenyl group which has 1 to 2 t- butyl groups and one hydroxy group, and most preferable antioxidant is an ester of propionic acid having a phenyl group which has 1 to 2 t-butyl groups and one hydroxy group with an alcohol having 2 or more carbon atoms.
  • the amount of the insect-controlling agent-containing support to be blended is usually from 0.1 to 100 parts by weight based on 100 parts by weight of the polyethylene-based resin, and the amount of the antioxidant to be blended is usually from 0.01 to 10 parts by weight based on 100 parts by weight of the polyethylene-based resin.
  • the amount of the insect-controlling agent-containing support to be blended is preferably from 0.1 to 20 parts by weight based on 100 parts by weight of the polyethylene-based resin, and the amount of the antioxidant to be blended is preferably from 0.01 to 1 part by weight based on 100 parts by weight of the polyethylene-based resin.
  • the amount of the insect-controlling agent-containing support to be blended is preferably from 5 to 100 parts by weight based on 100 parts by weight of the polyethylene-based resin, and the amount of the antioxidant to be blended is preferably from 0.03 to 10 parts by weight based on 100 parts by weight of the polyethylene-based resin.
  • the content of the support (only a support in an insect- controlling agent-containing support) in the resin composition is preferably not higher than 50 parts by weight, more preferably not higher than 30 parts by weight, based on 100 parts by weight of the polyethylene-based resin from the viewpoints of enhancement of the mechanical strength.
  • the content is preferably not lower than 0.3 part by weight, more preferably not lower than 0.6 part by weight, from the viewpoints of improvement of the insect- controlling effect.
  • the resin composition may contain other components, if needed.
  • the resin composition may contain a compound which acts to improve the insect- controlling effect.
  • a compound which acts to improve the insect- controlling effect.
  • piperonyl butoxide, MGK 264, octachlorodipropylether, etc. are exemplified.
  • the resin composition of the present invention may also contain additives such as an anti-blocking agent, a filler, a lubricant, an antistatic agent, a weather resistant agent, a pigment, a processability-improving agent and a metal soap, and two or more kinds of these additives may be used in combination.
  • the temperature, at which the polyethylene-based resin, the insect-controlling agent-containing support and the antioxidant are melt-blended, is usually from 160 to 300 0 C, preferably from 180 to 260°C.
  • Melt-blending of the polyethylene-based resin, the insect-controlling agent-containing support and the antioxidant can be carried out by a known mixer, for example, a twin-screw extruder, a Banbury mixer, a roll kneader or the like.
  • the resin composition prepared by melt-blending the polyethylene-based resin, the insect-controlling agent- containing support and the antioxidant is used as a main raw material of a raw material for melt spinning to shape filaments. Also, the resin composition is used as an insect-controlling agent master batch and is melt-blended with the above-described polyethylene-based resin to shape filaments .
  • the content of the insect-controlling agent-containing support in the resin composition prepared by melt-blending the insect-controlling agent master batch with the above- described polyethylene-based resin is preferably from 1 to 20 parts by weight based on 100 parts by weight of the total amount of the polyethylene-based resin (the total amount of the polyethylene-based resin in the master batch and the polyethylene-based resin to be blended with the master batch)
  • the content of the antioxidant is preferably from 0.05 to 1 part by weight based on 100 parts by weight of the total amount of the polyethylene-based resin (the total amount of the polyethylene-based resin in the master batch and the polyethylene-based resin to be blended with the master batch) .
  • the temperature, at which the insect-controlling agent master batch and the above-described antioxidant are melt- blended, is usually from 160 to 300 0 C, preferably from 180 to 260 0 C.
  • Melt-blending can be carried out by a known mixer, for example, a twin-screw extruder, a Banbury mixer, a roll kneader or the like.
  • Filaments are produced by melt-spinning.
  • An example of the method is as follows: an extruder or the like is used to melt the resin composition; the molten resin composition is extruded from a die or a nozzle through a gear pump; the extruded resin composition is taken up to form a strand-like resin composition; the strand-like resin composition is cooled using a cooling medium such as water or an air for spinning; and then, if needed, the resultant spun filament of the resin composition is drawn under heating, heat-treated and coated with an oil and is then wound up.
  • a cooling medium such as water or an air for spinning
  • the resultant filament has a sectional shape of, for example, a circle, ellipse, triangle, rectangle, hexagon, star or the like.
  • a monofilament shaped of the resin composition of the present invention is used for nets such as a mosquito net, screen, insect-controlling net, etc.; ropes; yarns; and filters.
  • a multifilament shaped of the resin composition of the present invention is used for ropes, nets, carpets, non-woven cloth, filters, shoes, clothing, etc. In particular, they are suitably used for applications required for insect-controlling effects, such as mosquito nets, screens, insect-controlling nets, filters, carpets, shoes and clothing.
  • insects as objects to be controlled by the filaments shaped of the resin composition of the present invention are Arthropoda such as spiders, ticks and insects.
  • Arthropoda such as spiders, ticks and insects.
  • insects the following are given: Ctenolepisma villosa Escherich, etc. belonging to Thysanura; cave cricket, mole cricket, Teleogryllus emma, locusta migratoria, Schistocerca gregaria, locust, etc. belonging to Orthoptera; earwig, etc. belonging to Dermaptera;
  • Nilaparvata lugens Stal Nilaparvata lugens Stal, Nephotettix cincticeps, Greenhous white fly, Myzus persicae, Cimex lectularius Linnaeus, Halyomorpha halys, etc. belonging to Hemiptera; dermestid beetles, Aulacophora femoralis, Sitophilus zeamais, Lyctus brunmeus, Ptinus japonicus, Popillia japonica Newman, etc. belonging to Coleoptera; cat flea, dog flea, human flea, etc.
  • a melt flow rate was measured at 190 0 C under a load of 21.18 N according to the method regulated in JIS K7210-1995,
  • a density was measured according to the method regulated in the method A among the methods described in JIS K7112-1980.
  • a test piece to be measured was annealed according to the method regulated in JIS K6760-1995.
  • the resultant resin composition for shaping filaments was extruded from the die with 150 holes of 0.8 mm ⁇ of a 50 mm ⁇ extruder, at a discharge rate of 20 kg/hr. and at a die set temperature of 190 0 C, and the resulting strand was taken up at a line speed of 14 m/min., allowed to pass through a heated water tank and was taken up at a rate of 112 m/min., to shape monofilaments with a fineness of 200 deniers .
  • the filament-cutting frequency (number of filaments cut per unit time) in process of the shaping of the filaments was 2.7/hr.
  • Comparative Example 1 A resin composition for shaping filaments was prepared in the same manner as in Example 1, except that 60.2 parts by weight of the pellets of the high-pressure-processed low density polyethylene were used and the antioxidant was not added in the case of preparing the insect-controlling agent master batch. Monofilaments of the resultant resin composition for shaping filaments were shaped in the same manner as in the shaping of the filaments of Example 1. The filament-cutting frequency in process of the shaping of the filaments was 5.1/hr.
  • Example 2 A resin composition for shaping filaments was prepared in the same manner as in Example 1, except that 60.2 parts by weight of the pellets of the high-pressure-processed low density polyethylene were used and the antioxidant was not added in the case of preparing the insect-controlling agent master batch. Monofilaments of the resultant resin composition for shaping filaments were shaped in the same manner as in the shaping of the filaments of Example 1. The filament-cutting frequency in process of the shaping of the filaments was 5.1/hr.
  • Example 2
  • a resin composition for shaping filaments was prepared in the same manner as in Example 1, except that 60.08 parts by weight of the pellets of the high-pressure-processed low density polyethylene were used and 0.12 parts by weight of pentaerythrityl-tetrakis [3- (3, 5-di-t-butyl-4- hydroxyphenyl) propionate] (Irganox® 1010 manufactured by Ciba Specialty Chemicals K. K., hereinafter referred to as AO-2) was used instead of the antioxidant AO-I in the case of preparing the insect-controlling agent master batch.
  • Monofilaments of the resultant resin composition for shaping filaments were shaped in the same manner as in the shaping of the filaments of Example 1.
  • the filament- cutting frequency in process of the shaping of the filaments was 2.5/hr.
  • a resin composition for shaping filaments was prepared in the same manner as in Example 1, except that 60.11 parts by weight of the pellets of the high-pressure-processed low density polyethylene were used and 0.09 parts by weight of n-octadecyl-3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate (Irganox® 1076 manufactured by Ciba Specialty Chemicals K. K., hereinafter referred to as AO-3) was used instead of the antioxidant AO-I in the case of preparing the insect- controlling agent master batch.
  • Monofilaments of the resultant resin composition for shaping filaments were shaped in the same manner as in the shaping of the filaments of Example 1.
  • the filament-cutting frequency in process of the shaping of the filaments was 0.8/hr.

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Abstract

There is provided a method for producing a resin composition, the use of the resin composition for shaping filaments being effective to decrease the filament-cutting frequency in process of shaping the filaments, and a method for producing filaments using the resin composition produced by the method. The method for producing an insect-controlling agent-containing resin composition comprises melt-mixing 100 parts by weight of a polyethylene-based resin, 0.1 to 100 parts by weight of an insect-controlling agent-containing support and 0.01 to 10 parts by weight of an antioxidant at a temperature of 160 to 300 °C.

Description

DESCRIPTION
METHOD FOR PRODUCING INSECT-CONTROLLING AGENT-CONTAINING RESIN COMPOSITION AND METHOD FOR PRODUCING FILAMENTS
TECHNICHAL FIELD
This application was filed claiming Paris Convention priority of Japanese Patent Application No. 2007-153724, the entire content of which is herein incorporated by reference.
The present invention relates to a method for producing an insect-controlling agent-containing resin composition and a method for producing filaments.
BACKGROUND OF INVENTION
Resin compositions comprising insect-controlling agents and polyethylene-based resins are processed into various shaped articles for use as materials for controlling insects such as ticks, sucking lice, mosquitoes, flies, etc. For example, there is proposed in JP-A-6- 315332 (Patent Publication 1) a resin composition comprising an insect-controlling agent and a linear low density polyethylene. There is also proposed in JP-A-8- 302080 (Patent Publication 2) a resin composition comprising an insect-controlling agent, a low density polyethylene and a high density polyethylene.
Patent Publication 1: JP-A-6-315332 Patent Publication 2: JP-A-8-302080
DISCLOSURE OF INVENTION
In the production of a resin composition comprising an insect-controlling agent and a polyethylene-based resin, by blending a support, an insect-controlling agent and, if needed, other additives, an insect-controlling agent- containing support comprising the support, and the insect- controlling agent and, if needed, other additives supported on the support is previously prepared and the insect- controlling agent-containing support is blended with a polyethylene-based resin. However, the resin composition produced by a conventional production method comprising the step of blending the insect-controlling agent-containing support with the polyethylene-based resin has difficulties in the shaping of filaments thereof such as cutting of the filaments, and therefore is insufficient in its shaping property. Under such a situation, an object of the present invention is to provide a method for producing a resin composition, the use of the resin composition for shaping of filaments being effective to decrease a filament-cutting freguency in process of shaping the filaments of the resin composition. Another object of the invention is to provide a method for producing filaments, using the resin composition produced by the method.
Firstly, the present invention relates to a method for producing an insect-controlling agent-containing resin composition, which comprises melt-mixing 100 parts by weight of a polyethylene-based resin, 0.1 to 100 parts by weight of an insect-controlling agent-containing support and 0.01 to 10 parts by weight of an antioxidant at a temperature of 160 to 3000C. Secondly, the present invention relates to a method for producing filaments, which comprises melt-spinning a resin composition obtained by melt-mixing a polyethylene- based resin with a resin composition produced by the above- described method at a temperature of 160 to 3000C, or the resin composition produced by the above-described method.
According to the present invention, there are provided a method for producing a resin composition, the use of the same resin composition for shaping filaments being effective to decrease a filament-cutting frequency in process of shaping the filaments; and a method for producing filaments, using the resin composition produced by the method.
BEST MODE FOR CARRYING OUT THE INVENTION
The insect-controlling agent-containing support is produced by blending an insect-controlling agent with a support. Examples of the insect-controlling agent include insect-controllable compounds such as insecticides, insect growth-controlling agents, insect-repelling agents, etc.
Examples of the insecticides include pyrethroid-based compounds, organophosphorus-based compounds, carbamate- based compounds, phenyl pyrazole-based compounds, etc. Examples of the pyrethroid-based compounds include permethrin, allethrin, d-alethrin, dd-alethrin, d- tetramethrin, prallethrin, cifenothrin, d-pfenothrin, d- resmethrin, empenthrin, fenvalerate, esfenvalerate, fenpropathrin, cyhalothrin, cyfluthrin, etofenprox, tralomethrin, esbiothrin, benfluthrin, terallethrin, deltamethrin, cypermethrin, fenothrin, tefluthrin, bifenthrin, cyfluthrin, cyphenothrin, cypermethrin, alphacypermethrin, etc. Examples of the organophosphorus- based compounds include fenitrothion, dichlorovos, naled, fenthion, cyanophos, chlorpyrifos, diazinon, carcrofos, salithion, diazinon, etc. Examples of the carbamate-based compounds include methoxydiazon, propoxur, fenobucarb, carbaryl, etc. Examples of the phenyl pyrazole-based compound include fipronyl, etc.
Examples of the insect growth-controlling agent include pyriproxfen, methoprene, hydroprene, diflubenzuron, cyromazine, phenoxycarb, lufenuron (CGA 184599), etc.
Examples of the insect-repelling agent include diethyl-toluamide, dibutyl phthalate, etc.
Each of these insect-controlling agents may be used alone, or at least two selected therefrom may be used as a mixture. As the insect-controlling agent, the insecticides are preferable, and the pyrethroid-based compounds are more preferable. Some of the pyrethroid-based compounds, showing vapor pressures of lower than 1 X 10~6 mmHg at 250C, are still more preferable. As the pyrethroid-based compounds which show vapor pressures of lower than 1 X 10"6 mmHg at 25°C, resmethrin, permethrin, etc. are exemplified.
As the support, a support capable of supporting the insect-controlling agent is used. Examples of the support include silica-based compounds, zeolites, clay minerals, metal oxides, micas, hydrotalcites, organic supports, etc. As the silica-based compounds, amorphous silica and crystalline silica are exemplified, and examples thereof include silicic acid powder, fine silicic acid powder, acidic china clay, diatom earth, quartz, white carbon, etc. As the zeolites, A type zeolite, mordenite, etc. are given. As the clay minerals, montmorillonite, saponite, bidellite, bentonite, kaolinate, halloysite, nacrite, deckite, anauxite, illite, sericite, etc. are given. As the metal oxides, zinc oxide, magnesium oxide, aluminum oxide, iron oxide, copper oxide, titanium oxide, etc. are given. As the mica, mica, vermiculite, etc. are given. As the hydrotalcites, smectite, etc. are given. As the organic supports, charcoals (charcoal, marl, grass peat, etc.), polymer beads (microcrystal cellulose, polystyrene beads, acrylate beads, methacrylate beads, polyvinyl alcohol-based beads, etc.) and their crosslinked polymer beads are given. In addition to these supports, perlite, gypsum, ceramics, volcanic rocks, etc. are given.
As the support, amorphous inorganic compounds are preferable, and amorphous silica is more preferable. In the blending of the support with the insect- controlling agent, the amount of the support to be blended is usually from 10 to 400 parts by weight based on 100 parts by weight of the insect-controlling agent.
In the blending of the support with the insect- controlling agent, if needed, other additives may be blended.
Examples of the polyethylene-based resin to be melt- blended with the insect-controlling agent-containing support include a high-pressure-processed low density polyethylene, a high density polyethylene, a linear low density polyethylene, an ultralow density polyethylene, etc., and these polyethylene-based resins may be used alone, or two or more kinds of them may be used in combination. The high-pressure-processed low density polyethylene is produced by polymerizing ethylene at a high temperature under a high pressure, using a radical-generating agent.
Examples of the radical-generating agent include organic peroxides such as di-t-butyl peroxide, t-butyl hydroperoxide, t-butyl-peroxy-2-ethyl hexanate, dicumyl peroxide, t-butylperoxyisopropyl carbonate, t-butylperoxy benzoate, di-t-amyl peroxide, cumyl hydroperoxide, t- butylperoxy pivalate, etc. and oxygen. The high density polyethylene, the linear low density polyethylene and the ultralow density polyethylene are produced by a known polymerization process such as the solution polymerization process, the slurry polymerization process, the vapor phase polymerization process, the high- pressure ionic polymerization process or the like, using a known olefin polymerization catalyst such as a Ziegler- Natta catalyst, a chromium-based catalyst, a metallocene- based catalyst or the like. This polymerization process may be of batch type or of continuous type, or may be a multi-step polymerization process comprising two or more steps .
As the Ziegler-Natta catalyst, for example, the following catalysts (1) and (2) are given: (1) a catalyst which comprises a component obtained by supporting at least one selected from the group consisting of titanium trichloride, vanadium trichloride, titanium tetrachloride and haloalcoholate on a magnesium-based compound, and an organic metal compound as a co-catalyst, and
(2) a catalyst which comprises a co-precipitate or an eutectic crystal of a magnesium compound and a titanium compound, and an organic metal compound as a co-catalyst. As the chromium-based catalyst, for example, a catalyst which comprises a component obtained by supporting a chromium compound on silica or silica-alumina, and an organic metal compound as a co-catalyst is given.
As the metallocene-based catalyst, for example, the following catalysts (1) to (4) are given: (1) a catalyst which comprises a component containing a transition metal compound having a cyclopentadiene framework, and a component containing an almoxane compound, (2) a catalyst which comprises the above transition metal compound-containing component and a component containing an ionic compound such as trityl borate, anilinium borate or the like, (3) a catalyst which comprises the above transition metal compound-containing component, the above ionic compound- containing component and a component containing an organic aluminum compound, and (4) a catalyst obtained by supporting or incorporating the above respective components on or into a particle-shaped inorganic compound such as Siθ2, Al2O3 or the like, or a particle-shaped polymer such as an olefin polymer of ethylene, styrene or the like.
The melt flow rate (MFR) of the polyethylene-based resin is usually from 0.1 to 50 g/10 mins. When this MFR is too high, the filament-cutting frequency tends to increase. The MFR is preferably not larger than 40 g/10 mins., more preferably not larger than 30 g/10 mins. The MFR is preferably not smaller than 0.3 g/10 mins., more preferably not smaller than 0.5 g/10 mins. from the viewpoint of decrease of burden on a motor of an extruder upon melt-blending. The MFR is measured under the conditions of a load of 21.18 N and a temperature of 1900C according to the method regulated in JIS K7210-1995. The density of the polyethylene-based resin is usually from 900 to 965 kg/m3. It is preferably from not lower than 905 kg/m3, more preferably not lower than 910 kg/m3, from the viewpoint of improvement of the insect-controlling property of the filaments. It is preferably not higher than 960 kg/m3, more preferably not higher than 955 kg/m3, from the viewpoint of a decrease in the filament-cutting frequency. In this regard, this density is measured according to a method regulated in the method A among the methods of JIS K7112-1980, using a test piece annealed according to JIS K6760-1995.
As the antioxidant used, phenol-based antioxidants, phosphorus-based antioxidants, sulfur-based antioxidants, etc. are given.
Examples of the phenol-based antioxidants include 2,6- di-t-butyl-4-methylphenol (BHT), n-octadecyl-3- (3, 5-di-t- butyl-4-hydroxyphenyl) propionate (Irganox® 1076 manufactured by Ciba Specialty Chemicals K.K.), pentaerythrityl-tetrakis [3- (3, 5-di-t-butyl-4- hydroxyphenyl) propionate] (Irganox® 1010 manufactured by Ciba Specialty Chemicals K.K.), 1 , 3, 5-tris (3, 5-di-tert- butyl-4-hydroxybenzyl) isocyanurate (Irganox® 3114 manufactured by Ciba Specialty Chemicals K.K.), 1,3,5- trimethy1-2, 4, 6-tris (3, 5-di-t-butyl-4-hydroxybenzyl) benzene, 3, 9-bis [2-{3- (3-t-butyl-4-hydroxy-5- methylphenyl) propionyloxy}-l, 1-dimethylethyl ] -2, 4, 8, 10- tetraoxaspyro [5.5] undecane (Sumilizer® GA80 manufactured by Sumitomo Chemical Company, Limited), etc.
Examples of the phosphorus-based antioxidants include distearylpentaerythritol diphosphite (ADK STAB® PEP8), tris (2, 4-di-tert-butylphenyl) phosphite (Irgafos® 168 manufactured by Ciba Specialty Chemicals K.K.), bis(2,4-di- tert-butylphenyl)pentaerythritol diphosphite, tetrakis (2, 4- di-tert-butylphenyl) 4,4' -biphenylene diphosphonite (Sandostab® P-EPQ manufactured by Clariant (Japan) K.K.), bis (2-t-butyl-4-methylphenyl) pentaerythritol diphosphite, etc. Examples of an antioxidant having both of a phenol structure and a phosphorus structure include 6- [3- (3-tert- butyl-4-hydroxy-5-methyl) propoxy] -2,4,8, 10-tetra-tert- butyldibenz [d, f] [1, 3, 2] -dioxaphosphebine (Sumilizer® GP manufactured by Sumitomo Chemical Company, Limited), etc.
Example of the sulfur-based antioxidant include 4,4'- thiobis (3-methyl-6-tert-butylphenol) (Sumilizer® WXR manufactured by Sumitomo Chemical Company, Limited), 2,2- thiobis- (4-methyl-6-tert-butylphenol) (IRGANOX® 1081 manufactured by Ciba Specialty Chemicals K.K.), etc.
Examples of other antioxidants include vitamin E, vitamin A, etc.
Preferable antioxidants are antioxidants having phenol structures, and more preferable antioxidants are phenol- based antioxidants. Still more preferable antioxidant is a propionate ester having a phenyl group which has 1 to 2 t- butyl groups and one hydroxy group, and most preferable antioxidant is an ester of propionic acid having a phenyl group which has 1 to 2 t-butyl groups and one hydroxy group with an alcohol having 2 or more carbon atoms.
In the melt-blending of the polyethylene-based resin, the insect-controlling agent-containing support and the antioxidant, the amount of the insect-controlling agent- containing support to be blended is usually from 0.1 to 100 parts by weight based on 100 parts by weight of the polyethylene-based resin, and the amount of the antioxidant to be blended is usually from 0.01 to 10 parts by weight based on 100 parts by weight of the polyethylene-based resin. When the resin composition after blending is a main raw material of a raw material for melt spinning, the amount of the insect-controlling agent-containing support to be blended is preferably from 0.1 to 20 parts by weight based on 100 parts by weight of the polyethylene-based resin, and the amount of the antioxidant to be blended is preferably from 0.01 to 1 part by weight based on 100 parts by weight of the polyethylene-based resin. When the resin composition after blending is an insect-controlling agent master batch, the amount of the insect-controlling agent- containing support to be blended is preferably from 5 to 100 parts by weight based on 100 parts by weight of the polyethylene-based resin, and the amount of the antioxidant to be blended is preferably from 0.03 to 10 parts by weight based on 100 parts by weight of the polyethylene-based resin.
When the resin composition is used for a filament, the content of the support (only a support in an insect- controlling agent-containing support) in the resin composition is preferably not higher than 50 parts by weight, more preferably not higher than 30 parts by weight, based on 100 parts by weight of the polyethylene-based resin from the viewpoints of enhancement of the mechanical strength. The content is preferably not lower than 0.3 part by weight, more preferably not lower than 0.6 part by weight, from the viewpoints of improvement of the insect- controlling effect.
In the melt-blending of the polyethylene-based resin, the insect-controlling agent-containing support and the antioxidant, the resin composition may contain other components, if needed. For example, the resin composition may contain a compound which acts to improve the insect- controlling effect. As such a compound, piperonyl butoxide, MGK 264, octachlorodipropylether, etc. are exemplified. The resin composition of the present invention may also contain additives such as an anti-blocking agent, a filler, a lubricant, an antistatic agent, a weather resistant agent, a pigment, a processability-improving agent and a metal soap, and two or more kinds of these additives may be used in combination.
The temperature, at which the polyethylene-based resin, the insect-controlling agent-containing support and the antioxidant are melt-blended, is usually from 160 to 3000C, preferably from 180 to 260°C.
Melt-blending of the polyethylene-based resin, the insect-controlling agent-containing support and the antioxidant can be carried out by a known mixer, for example, a twin-screw extruder, a Banbury mixer, a roll kneader or the like.
The resin composition prepared by melt-blending the polyethylene-based resin, the insect-controlling agent- containing support and the antioxidant is used as a main raw material of a raw material for melt spinning to shape filaments. Also, the resin composition is used as an insect-controlling agent master batch and is melt-blended with the above-described polyethylene-based resin to shape filaments . The content of the insect-controlling agent-containing support in the resin composition prepared by melt-blending the insect-controlling agent master batch with the above- described polyethylene-based resin is preferably from 1 to 20 parts by weight based on 100 parts by weight of the total amount of the polyethylene-based resin (the total amount of the polyethylene-based resin in the master batch and the polyethylene-based resin to be blended with the master batch) , and the content of the antioxidant is preferably from 0.05 to 1 part by weight based on 100 parts by weight of the total amount of the polyethylene-based resin (the total amount of the polyethylene-based resin in the master batch and the polyethylene-based resin to be blended with the master batch) .
The temperature, at which the insect-controlling agent master batch and the above-described antioxidant are melt- blended, is usually from 160 to 3000C, preferably from 180 to 2600C. Melt-blending can be carried out by a known mixer, for example, a twin-screw extruder, a Banbury mixer, a roll kneader or the like.
Filaments are produced by melt-spinning. An example of the method is as follows: an extruder or the like is used to melt the resin composition; the molten resin composition is extruded from a die or a nozzle through a gear pump; the extruded resin composition is taken up to form a strand-like resin composition; the strand-like resin composition is cooled using a cooling medium such as water or an air for spinning; and then, if needed, the resultant spun filament of the resin composition is drawn under heating, heat-treated and coated with an oil and is then wound up.
The resultant filament has a sectional shape of, for example, a circle, ellipse, triangle, rectangle, hexagon, star or the like.
A monofilament shaped of the resin composition of the present invention is used for nets such as a mosquito net, screen, insect-controlling net, etc.; ropes; yarns; and filters. A multifilament shaped of the resin composition of the present invention is used for ropes, nets, carpets, non-woven cloth, filters, shoes, clothing, etc. In particular, they are suitably used for applications required for insect-controlling effects, such as mosquito nets, screens, insect-controlling nets, filters, carpets, shoes and clothing.
Examples of insects as objects to be controlled by the filaments shaped of the resin composition of the present invention are Arthropoda such as spiders, ticks and insects. The following are examples thereof: Ormithonyssus sylviarum, citrus red mite, Tyrophagus putrescentiae, etc. belonging to Acarina; and Atypus karshi, Pholcus phalangioides, etc. belonging to Araneae, in Arachnida: Thereuopoda clunifera, etc. belonging to Scutigeromorpha; and Bothropolys asperatus, etc. belonging to Lithobiomorpha in Chilopoda: and axidus gracilis, Nedyopus tambanus, etc. belonging to Polydesmoidea, in Chilopoda.
As the insects, the following are given: Ctenolepisma villosa Escherich, etc. belonging to Thysanura; cave cricket, mole cricket, Teleogryllus emma, locusta migratoria, Schistocerca gregaria, locust, etc. belonging to Orthoptera; earwig, etc. belonging to Dermaptera;
Blattella germanica, Periplaneta fuliginosa, Periplaneta Japonica, Periplaneta americana, etc. belonging to Blattaria; Japanese subterranean termite, Formosan subterranean termite, Incisitermes minor HAGEN, etc. belonging to Isoptera; Liposcelis entomophilus Enderlein, Liposcelis bostrychophilus Badonnel, etc. belonging to Psocoptera; Trichodectes canis, Felicola subrostratus, etc. belonging to Mallophaga; Pediculus humanus corporis, Pthirus pubis, Pediculus humanus, etc. belonging to Anoplura; Nilaparvata lugens Stal, Nephotettix cincticeps, Greenhous white fly, Myzus persicae, Cimex lectularius Linnaeus, Halyomorpha halys, etc. belonging to Hemiptera; dermestid beetles, Aulacophora femoralis, Sitophilus zeamais, Lyctus brunmeus, Ptinus japonicus, Popillia japonica Newman, etc. belonging to Coleoptera; cat flea, dog flea, human flea, etc. belonging to Siphonaptera; Culex pipiens pallens couguillett, Aedes aegypti, anopheles, Simuliidae, Chironomus, Psychodidae, House fly, Glossina palpalis, Tabanus trigonus, Syrphinae, etc. belonging to Diptera; Vespa, Polistes, Nesodiprion japonicus Marlatt, Dryocosmus kuriphilus, Sclerodermus nipponicus, Monomorium pharaonis, etc. belonging to Hymenoptera; and the like.
EXAMPLES
Hereinafter, the present invention will be described by way of Examples thereof and Comparative Examples. In Examples and Comparative Examples, the physical properties were measured according to the following methods.
(1) Melt Flow Rate (MFR, g/10 mins . in unit)
A melt flow rate was measured at 1900C under a load of 21.18 N according to the method regulated in JIS K7210-1995,
(2) Density (kg/m3 in unit)
A density was measured according to the method regulated in the method A among the methods described in JIS K7112-1980. A test piece to be measured was annealed according to the method regulated in JIS K6760-1995.
Example 1
(1) Preparation of Insect-Controlling Agent-Containing Support 1.5 Parts by weight of an antioxidant (2, 6-di-t-butyl- 4-methylphenol, hereinafter referred to as AO-I) was dissolved in 51 parts by weight of permethrin (Eksmin® of Sumitomo Chemical Company, Limited). Next, 52.5 parts by weight of a mixture of permethrin and AO-I was mixed with 47.5 parts by weight (93.1 parts by weight based on 100 parts by weight of permethrin) of amorphous silica (Trade name: Porous Silica of SUZUKI YUSHI CO., LTD.) under stirring to prepare an insect-controlling agent-containing support.
(2) Preparation of Insect-Controlling Agent Master batch 60.15 parts by weight of pellets of a high-pressure- processed low density polyethylene (Sumikathene® CE5502 of Sumitomo Chemical Company, Limited, hereinafter referred to as LD), 0.05 part by weight (0.08 part by weight based on 100 parts by weight of LD) of the antioxidant (AO-I), 31 parts by weight (51.54 parts by weight based on 100 parts by weight of LD) of an insect-controlling agent-containing support, 5 parts by weight of zinc stearate and 4.52 parts by weight of a blue coloring agent (available from Sumika Color) were melt-kneaded at a temperature of 2000C with a twin-screw extruder to prepare an insect-controlling agent master batch.
(3) Preparation of Resin Composition for Shaping Filaments
100 parts by weight of pellets of a high density polyethylene (HI-ZEX® 5000S of PRIME POLYMER; MFR = 0.8 g/10 min., density = 948 kg/m3) , 16.5 parts by weight of the insect-controlling agent master batch and 7 parts by weight zinc stearate were melt-kneaded at a temperature of 2600C with a twin-screw extruder to obtain a resin composition for shaping filaments. (4) Shaping of Filaments
The resultant resin composition for shaping filaments was extruded from the die with 150 holes of 0.8 mmφ of a 50 mmφ extruder, at a discharge rate of 20 kg/hr. and at a die set temperature of 1900C, and the resulting strand was taken up at a line speed of 14 m/min., allowed to pass through a heated water tank and was taken up at a rate of 112 m/min., to shape monofilaments with a fineness of 200 deniers . The filament-cutting frequency (number of filaments cut per unit time) in process of the shaping of the filaments was 2.7/hr. Comparative Example 1 A resin composition for shaping filaments was prepared in the same manner as in Example 1, except that 60.2 parts by weight of the pellets of the high-pressure-processed low density polyethylene were used and the antioxidant was not added in the case of preparing the insect-controlling agent master batch. Monofilaments of the resultant resin composition for shaping filaments were shaped in the same manner as in the shaping of the filaments of Example 1. The filament-cutting frequency in process of the shaping of the filaments was 5.1/hr. Example 2
A resin composition for shaping filaments was prepared in the same manner as in Example 1, except that 60.08 parts by weight of the pellets of the high-pressure-processed low density polyethylene were used and 0.12 parts by weight of pentaerythrityl-tetrakis [3- (3, 5-di-t-butyl-4- hydroxyphenyl) propionate] (Irganox® 1010 manufactured by Ciba Specialty Chemicals K. K., hereinafter referred to as AO-2) was used instead of the antioxidant AO-I in the case of preparing the insect-controlling agent master batch. Monofilaments of the resultant resin composition for shaping filaments were shaped in the same manner as in the shaping of the filaments of Example 1. The filament- cutting frequency in process of the shaping of the filaments was 2.5/hr. Example 3
A resin composition for shaping filaments was prepared in the same manner as in Example 1, except that 60.11 parts by weight of the pellets of the high-pressure-processed low density polyethylene were used and 0.09 parts by weight of n-octadecyl-3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate (Irganox® 1076 manufactured by Ciba Specialty Chemicals K. K., hereinafter referred to as AO-3) was used instead of the antioxidant AO-I in the case of preparing the insect- controlling agent master batch. Monofilaments of the resultant resin composition for shaping filaments were shaped in the same manner as in the shaping of the filaments of Example 1. The filament-cutting frequency in process of the shaping of the filaments was 0.8/hr.

Claims

1. A method for producing an insect-controlling agent- containing resin composition, which comprises melt-mixing 100 parts by weight of a polyethylene-based resin, 0.1 to 100 parts by weight of an insect-controlling agent- containing support and 0.01 to 10 parts by weight of an antioxidant at a temperature of 160 to 300°C.
2. A method for producing filaments, which comprises melt-spinning a resin composition obtained by melt-mixing a polyethylene-based resin with a resin composition produced by the method according to claim 1 at a temperature of 160 to 3000C, or the resin composition produced by the method according to claim 1.
PCT/JP2008/060925 2007-06-11 2008-06-10 Method for producing insect-controlling agent-containing resin composition and method for producing filaments Ceased WO2008153166A1 (en)

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JP2011127017A (en) * 2009-12-18 2011-06-30 Sumitomo Chemical Co Ltd Polymer composition and molded article comprising the same
CN104871888B (en) * 2015-04-23 2018-06-05 安徽海义源进出口有限公司 A kind of desinsection farm network and preparation method thereof
CN107191123A (en) * 2017-07-14 2017-09-22 何聿俊 A kind of deinsectization window screen cloth and its application
CN114573905A (en) * 2022-03-11 2022-06-03 福建菲克斯达纺织有限公司 Plastic master batch formula with long-acting insect repelling and preventing effect, processing technology and using method

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