WO2017130920A1 - 加熱蒸散用吸液芯、及びその製造方法、並びに当該加熱蒸散用吸液芯を用いた加熱蒸散方法 - Google Patents
加熱蒸散用吸液芯、及びその製造方法、並びに当該加熱蒸散用吸液芯を用いた加熱蒸散方法 Download PDFInfo
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- WO2017130920A1 WO2017130920A1 PCT/JP2017/002201 JP2017002201W WO2017130920A1 WO 2017130920 A1 WO2017130920 A1 WO 2017130920A1 JP 2017002201 W JP2017002201 W JP 2017002201W WO 2017130920 A1 WO2017130920 A1 WO 2017130920A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid
- transpiration
- core
- heat
- heat evaporation
- Prior art date
Links
- 230000005068 transpiration Effects 0.000 title claims abstract description 68
- 238000010438 heat treatment Methods 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 12
- 239000007788 liquid Substances 0.000 claims abstract description 112
- 239000000126 substance Substances 0.000 claims abstract description 104
- 230000000749 insecticidal effect Effects 0.000 claims abstract description 39
- 239000000843 powder Substances 0.000 claims abstract description 38
- 239000002728 pyrethroid Substances 0.000 claims abstract description 33
- 239000011230 binding agent Substances 0.000 claims abstract description 31
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000001704 evaporation Methods 0.000 claims description 56
- 230000008020 evaporation Effects 0.000 claims description 50
- 239000002250 absorbent Substances 0.000 claims description 31
- 230000002745 absorbent Effects 0.000 claims description 28
- -1 glycol ether compound Chemical class 0.000 claims description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 21
- 239000002917 insecticide Substances 0.000 claims description 20
- 238000009835 boiling Methods 0.000 claims description 19
- 238000010521 absorption reaction Methods 0.000 claims description 18
- DDVNRFNDOPPVQJ-HQJQHLMTSA-N transfluthrin Chemical compound CC1(C)[C@H](C=C(Cl)Cl)[C@H]1C(=O)OCC1=C(F)C(F)=CC(F)=C1F DDVNRFNDOPPVQJ-HQJQHLMTSA-N 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000004927 clay Substances 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- 239000010439 graphite Substances 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000010445 mica Substances 0.000 claims description 7
- 229910052618 mica group Inorganic materials 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- 238000010304 firing Methods 0.000 claims description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 6
- AGMMRUPNXPWLGF-AATRIKPKSA-N (2,3,5,6-tetrafluoro-4-methylphenyl)methyl 2,2-dimethyl-3-[(e)-prop-1-enyl]cyclopropane-1-carboxylate Chemical compound CC1(C)C(/C=C/C)C1C(=O)OCC1=C(F)C(F)=C(C)C(F)=C1F AGMMRUPNXPWLGF-AATRIKPKSA-N 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 3
- 229910000278 bentonite Inorganic materials 0.000 claims description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 3
- 239000000571 coke Substances 0.000 claims description 3
- 229910052878 cordierite Inorganic materials 0.000 claims description 3
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 3
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052863 mullite Inorganic materials 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000000454 talc Substances 0.000 claims description 3
- 229910052623 talc Inorganic materials 0.000 claims description 3
- 239000011271 tar pitch Substances 0.000 claims description 3
- 206010037660 Pyrexia Diseases 0.000 claims description 2
- 239000000243 solution Substances 0.000 description 40
- 239000000203 mixture Substances 0.000 description 15
- 241000607479 Yersinia pestis Species 0.000 description 14
- 241000255925 Diptera Species 0.000 description 11
- 239000013011 aqueous formulation Substances 0.000 description 11
- 239000000047 product Substances 0.000 description 10
- 238000009472 formulation Methods 0.000 description 9
- 239000002904 solvent Substances 0.000 description 7
- 241000238631 Hexapoda Species 0.000 description 6
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 description 6
- 229930195733 hydrocarbon Natural products 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- ZCVAOQKBXKSDMS-AQYZNVCMSA-N (+)-trans-allethrin Chemical compound CC1(C)[C@H](C=C(C)C)[C@H]1C(=O)OC1C(C)=C(CC=C)C(=O)C1 ZCVAOQKBXKSDMS-AQYZNVCMSA-N 0.000 description 5
- FMTFEIJHMMQUJI-NJAFHUGGSA-N 102130-98-3 Natural products CC=CCC1=C(C)[C@H](CC1=O)OC(=O)[C@@H]1[C@@H](C=C(C)C)C1(C)C FMTFEIJHMMQUJI-NJAFHUGGSA-N 0.000 description 5
- 229940024113 allethrin Drugs 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 239000000077 insect repellent Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 4
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical class OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 4
- 150000002334 glycols Chemical class 0.000 description 4
- 239000003350 kerosene Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 239000008155 medical solution Substances 0.000 description 3
- 239000011368 organic material Substances 0.000 description 3
- SPSPIUSUWPLVKD-UHFFFAOYSA-N 2,3-dibutyl-6-methylphenol Chemical compound CCCCC1=CC=C(C)C(O)=C1CCCC SPSPIUSUWPLVKD-UHFFFAOYSA-N 0.000 description 2
- GZMAAYIALGURDQ-UHFFFAOYSA-N 2-(2-hexoxyethoxy)ethanol Chemical compound CCCCCCOCCOCCO GZMAAYIALGURDQ-UHFFFAOYSA-N 0.000 description 2
- HRWADRITRNUCIY-UHFFFAOYSA-N 2-(2-propan-2-yloxyethoxy)ethanol Chemical compound CC(C)OCCOCCO HRWADRITRNUCIY-UHFFFAOYSA-N 0.000 description 2
- YJTIFIMHZHDNQZ-UHFFFAOYSA-N 2-[2-(2-methylpropoxy)ethoxy]ethanol Chemical compound CC(C)COCCOCCO YJTIFIMHZHDNQZ-UHFFFAOYSA-N 0.000 description 2
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 description 2
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 241001122767 Theaceae Species 0.000 description 2
- 230000001877 deodorizing effect Effects 0.000 description 2
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 2
- 229940075557 diethylene glycol monoethyl ether Drugs 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000003623 enhancer Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- GQCZPFJGIXHZMB-UHFFFAOYSA-N 1-tert-Butoxy-2-propanol Chemical compound CC(O)COC(C)(C)C GQCZPFJGIXHZMB-UHFFFAOYSA-N 0.000 description 1
- ZUAURMBNZUCEAF-UHFFFAOYSA-N 2-(2-phenoxyethoxy)ethanol Chemical compound OCCOCCOC1=CC=CC=C1 ZUAURMBNZUCEAF-UHFFFAOYSA-N 0.000 description 1
- XYVAYAJYLWYJJN-UHFFFAOYSA-N 2-(2-propoxypropoxy)propan-1-ol Chemical compound CCCOC(C)COC(C)CO XYVAYAJYLWYJJN-UHFFFAOYSA-N 0.000 description 1
- OADIZUFHUPTFAG-UHFFFAOYSA-N 2-[2-(2-ethylhexoxy)ethoxy]ethanol Chemical compound CCCCC(CC)COCCOCCO OADIZUFHUPTFAG-UHFFFAOYSA-N 0.000 description 1
- RKLRVTKRKFEVQG-UHFFFAOYSA-N 2-tert-butyl-4-[(3-tert-butyl-4-hydroxy-5-methylphenyl)methyl]-6-methylphenol Chemical compound CC(C)(C)C1=C(O)C(C)=CC(CC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 RKLRVTKRKFEVQG-UHFFFAOYSA-N 0.000 description 1
- QCAHUFWKIQLBNB-UHFFFAOYSA-N 3-(3-methoxypropoxy)propan-1-ol Chemical compound COCCCOCCCO QCAHUFWKIQLBNB-UHFFFAOYSA-N 0.000 description 1
- PSJBSUHYCGQTHZ-UHFFFAOYSA-N 3-Methoxy-1,2-propanediol Chemical compound COCC(O)CO PSJBSUHYCGQTHZ-UHFFFAOYSA-N 0.000 description 1
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 241000256118 Aedes aegypti Species 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000255777 Lepidoptera Species 0.000 description 1
- 241000257226 Muscidae Species 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 241000258242 Siphonaptera Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- KVIZNNVXXNFLMU-AIIUZBJTSA-N [2,3,5,6-tetrafluoro-4-(methoxymethyl)phenyl]methyl (1r,3r)-2,2-dimethyl-3-[(e)-prop-1-enyl]cyclopropane-1-carboxylate Chemical compound FC1=C(F)C(COC)=C(F)C(F)=C1COC(=O)[C@H]1C(C)(C)[C@@H]1\C=C\C KVIZNNVXXNFLMU-AIIUZBJTSA-N 0.000 description 1
- MWFQAAWRPDRKDG-KOLCDFICSA-N [2,3,5,6-tetrafluoro-4-(methoxymethyl)phenyl]methyl (1r,3s)-3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropane-1-carboxylate Chemical compound FC1=C(F)C(COC)=C(F)C(F)=C1COC(=O)[C@H]1C(C)(C)[C@@H]1C=C(Cl)Cl MWFQAAWRPDRKDG-KOLCDFICSA-N 0.000 description 1
- 230000000895 acaricidal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- HECGKCOICWUUJU-UHFFFAOYSA-N bis(diphenylphosphanylmethyl)-phenylphosphane Chemical compound C=1C=CC=CC=1P(C=1C=CC=CC=1)CP(C=1C=CC=CC=1)CP(C=1C=CC=CC=1)C1=CC=CC=C1 HECGKCOICWUUJU-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003759 ester based solvent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000004210 ether based solvent Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- BKACAEJQMLLGAV-PLNGDYQASA-N heptafluthrin Chemical compound FC1=C(F)C(COC)=C(F)C(F)=C1COC(=O)C1C(C)(C)C1\C=C/C(F)(F)F BKACAEJQMLLGAV-PLNGDYQASA-N 0.000 description 1
- 229940051250 hexylene glycol Drugs 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000000955 prescription drug Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000012719 thermal polymerization Methods 0.000 description 1
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M1/00—Stationary means for catching or killing insects
- A01M1/20—Poisoning, narcotising, or burning insects
-
- 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
- A01N25/18—Vapour or smoke emitting compositions with delayed or sustained release
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
- A61L9/02—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air by heating or combustion
- A61L9/03—Apparatus therefor
Definitions
- the present invention relates to a liquid core for heat transpiration used for transpiration of a chemical solution containing a pyrethroid insecticidal component having a relatively high vapor pressure, a manufacturing method thereof, and a heat transpiration method using the liquid core for heat transpiration. .
- a flying pest control product for controlling flying insect pests such as mosquitoes
- a chemical containing insecticidal ingredients which employs a method in which an insecticidal component is evaporated in the atmosphere
- mosquito repellent liquid which employs a method in which an insecticidal component is evaporated in the atmosphere
- pyrethroid insecticidal components are used as insecticidal components of mosquito repellent liquids.
- pyrethroid insecticidal components have been mainly mainstream of allethrin, praretrin, flamethrin, etc. In recent years, however, new components such as transfluthrin and methfluthrin excellent in insecticidal activity tend to be used.
- mosquito-repellent liquids were mainly oil-based formulas worldwide, but water-based formulas can reduce the risk of fire compared to oil-based formulas, and further enhance the insecticidal effect against pests. Therefore, the need for aqueous formulations is expected to increase in the future.
- a liquid-absorbent core applicable to a chemical liquid of an aqueous formulation for example, a liquid-absorbent core obtained by firing a mixture of an inorganic powder, an organic substance, and an inorganic binder at 600 to 2000 ° C. is known (for example, see Patent Document 1).
- the liquid absorbent core of Patent Document 1 is used for a chemical solution containing conventional pyrethroid insecticide components such as allethrin, praretrin, and flamethrin, and is an aqueous insecticide formulated with a polyoxyalkylene alkyl ether solubilizer. Shown to be applicable.
- the liquid-absorbent core of Patent Document 1 does not use a paste (organic binder) such as starch, and therefore is an aqueous-form chemical solution containing conventional pyrethroid insecticide components such as allethrin, praretrin, and flamethrin. If so, it can be said that physical deterioration of the liquid absorbent core hardly occurs.
- the conventional liquid absorption wick including patent document 1 will be a mosquito when the period until it actually starts using (after heating a liquid absorption wick) after loading a liquid absorption wick into a chemical
- medical solution becomes long.
- the effective period of the liquid is shortened, leaving room for improvement in the stability of the transpiration performance of the absorbent core.
- the present invention has been made in view of the above problems, and in a liquid core for heating transpiration that can be used for transpiration of a chemical solution containing a pyrethroid insecticide component having a relatively high vapor pressure, stable transpiration performance at the time of use. In addition to its high insecticidal efficacy, it can prevent chemical leakage due to rising internal pressure of the chemical solution container and chemical solution leakage due to overturning of the chemical solution container.
- An object of the present invention is to provide a liquid core for heat evaporation that can be maintained. Moreover, it aims at providing the manufacturing method of such a liquid core for heating transpiration, and also the heating transpiration method using the said liquid core for heating transpiration.
- the characteristic configuration of the liquid core for heat evaporation according to the present invention is a chemical solution containing a pyrethroid insecticidal component having a vapor pressure at 30 ° C. of 2 ⁇ 10 ⁇ 4 to 1 ⁇ 10 ⁇ 2 mmHg.
- a transpiration core for transpiration comprising, as raw materials, an inorganic powder, an inorganic binder, and an organic substance.
- the ratio (W 1 / W 2 ) between the total weight (W 1 ) and the weight (W 2 ) of the organic substance is set to 4.0 to 10.
- the organic substance preferably contains carbonaceous powder, and the carbonaceous powder is preferably at least one selected from the group consisting of graphite, carbon black, activated carbon, charcoal, and coke.
- the organic substance further contains an organic binder.
- the chemical solution preferably further contains a glycol ether compound and / or a glycol compound having a boiling point of 150 to 300 ° C. and water.
- the pyrethroid insecticidal component is preferably at least one selected from the group consisting of transfluthrin, metfurthrin, and profluthrin.
- the inorganic powder is preferably at least one selected from the group consisting of mica, alumina, silica, talc, mullite, cordierite, and zirconia.
- the inorganic binder is preferably at least one selected from the group consisting of clay, bentonite, halosite, and tar pitch.
- an appropriate material is selected as a raw material for the liquid core for heating transpiration, and each raw material is blended in an appropriate ratio. It is possible to achieve both stable transpiration performance and high insecticidal efficacy at the time of use, and it is possible to prevent chemical leakage due to an increase in the internal pressure of the chemical content and chemical leakage due to the fall of the chemical solution container.
- such a liquid core for heat evaporation has high practicality because the evaporation performance of the liquid absorption core is maintained even after a certain period of time has elapsed since manufacture.
- the characteristic configuration of the method for producing a liquid core for heat transpiration is as follows: A method for producing a liquid core for heat evaporation for evaporating a chemical containing a pyrethroid insecticidal component having a vapor pressure of 2 ⁇ 10 ⁇ 4 to 1 ⁇ 10 ⁇ 2 mmHg at 30 ° C. Including a mixing step of mixing the powder, the inorganic binder, and the organic substance, and a baking step of baking the mixed raw materials. In the mixing step, the inorganic powder and the inorganic binder The raw material is prepared so that the ratio (W 1 / W 2 ) between the total weight (W 1 ) and the weight (W 2 ) of the organic substance is 4.0 to 10.
- the firing step is preferably performed at 600 to 2000 ° C.
- the heat transpiration method according to the present invention is characterized by a heat transpiration method using the liquid wick for heating transpiration according to any one of the above, and the liquid wick for heating transpiration. Is immersed in the chemical solution, and the absorbed chemical solution is guided to the upper part of the liquid core for heat evaporation and heated at 60 to 130 ° C. to evaporate the pyrethroid insecticide into the atmosphere.
- the chemical liquid is heated and evaporated using the heat transpiration absorbent core of the present invention, it is possible to achieve both stable transpiration performance and high insecticidal efficacy, and the chemical liquid by increasing the internal pressure of the chemical liquid content. It is possible to prevent leakage of chemical liquid due to leakage or overturn of the chemical liquid container. Moreover, since the transpiration
- liquid absorption core for heat evaporation of the present invention the production method thereof, and the heat evaporation method using the liquid core for heat evaporation will be described.
- present invention is not intended to be limited to the embodiments and examples described below.
- the chemical solution for mosquito liquid (hereinafter simply referred to as “chemical solution”) applicable to the liquid core for heat evaporation of the present invention has a vapor pressure at 30 ° C. of 2 ⁇ 10 ⁇ 4 to 1 ⁇ 10 ⁇ 2 mmHg. Contains a pyrethroid insecticide.
- Pyrethroid insecticides include, for example, transfluthrin, metofluthrin, profluthrin, empentrin, terrareslin, meperfluthrin, heptafluthrin, 4-methoxymethyl-2,3,5,6-tetrafluorobenzyl-chrysanthemate, and 4- And methoxymethyl-2,3,5,6-tetrafluorobenzyl-2,2-dimethyl-3- (2-chloro-2-trifluoromethylvinyl) cyclopropanecarboxylate.
- transfluthrin in view of heat transpiration, insecticidal efficacy, stability, etc., transfluthrin, metfurthrin, and profluthrin are preferable, and transfluthrin is more preferable.
- the pyrethroid insecticides listed above may be used singly or in a mixed state.
- the pyrethroid insecticidal component when there are optical isomers and geometric isomers based on asymmetric carbon in the acid part or alcohol part, they are also included in the pyrethroid insecticidal component usable in the present invention.
- the content of the pyrethroid insecticide component in the chemical solution is preferably 0.1 to 3.0% by mass. If the content is less than 0.1% by mass, the insecticidal efficacy may be reduced. On the other hand, when the content exceeds 3.0% by mass, the properties of the chemical solution may be hindered.
- kerosene oil-based formulation
- aqueous formulation water
- the aqueous formulation can reduce the risk to fire compared to the oil-based formulation.
- An aqueous formulation is preferred because it is easy to enhance the insecticidal effect against pests.
- Glycol ether compounds and / or glycol compounds are (1) solubilized pyrethroid insecticide components, (2) improved heat transpiration, and (3) interposed between pyrethroid insecticide components and water. It has the effect of heating and evaporating the three components at a constant ratio. Furthermore, glycol ether compounds and / or glycol compounds also act as “efficacy enhancers” against pyrethroid-sensitive pests, reducing the degree of decrease in insecticidal efficacy even when targeted at pests with reduced sensitivity. The effect is recognized.
- the content of the glycol ether compound and / or glycol compound in the chemical solution is preferably 10 to 70% by mass, more preferably 30 to 60% by mass.
- the content is less than 10% by mass, not only does the preparation of an aqueous formulation be hindered, but the effect as an effect enhancer and the effect of reducing the degree of decrease in insecticidal efficacy are poor.
- the content exceeds 70% by mass, not only does the insecticidal effect reach its peak, but the danger to fire increases, which may impair the merit as an aqueous formulation.
- Glycol ether compounds and / or glycol compounds include, for example, diethylene glycol monoethyl ether (boiling point: 202 ° C.), diethylene glycol monoisopropyl ether (boiling point: 207 ° C., hereinafter DEMIP), diethylene glycol monobutyl ether (boiling point: 231 ° C., hereinafter DEMB).
- Diethylene glycol monoisobutyl ether (boiling point: 220 ° C., hereinafter DEMIB), diethylene glycol monohexyl ether (boiling point: 259 ° C., hereinafter DEMH), diethylene glycol mono 2-ethylhexyl ether (boiling point: 272 ° C.), diethylene glycol monophenyl ether (boiling point: 283 ° C), triethylene glycol monomethyl ether (boiling point: 249 ° C), propylene glycol monotertiary butyl ether (Boiling point: 151 ° C.), dipropylene glycol monomethyl ether (boiling point: 188 ° C.), dipropylene glycol monopropyl ether (boiling point: 210 ° C., hereinafter DPMP), 3-methoxy-1,2-propanediol (boiling point: 220 ° C), he
- diethylene glycol monoethyl ether diethylene glycol monoisopropyl ether, diethylene glycol monobutyl ether, diethylene glycol monoisobutyl ether, and diethylene glycol monohexyl ether are preferred, and diethylene glycol monobutyl ether is more preferred.
- the above-mentioned glycol ether compounds and / or glycol compounds may be used alone or in a mixed state.
- hydrocarbon solvent such as kerosene having a boiling point of 150 to 350 ° C.
- hydrocarbon solvents include normal paraffins, isoparaffins, naphthenic hydrocarbons corresponding to saturated aliphatic or alicyclic hydrocarbons having 12 or more carbon atoms.
- the hydrocarbon solvents listed above may be used alone or in a mixed state.
- pyrethroid insecticides such as allethrin, praretrin, diet, terpene compounds, natural essential oils, repellents such as fragrances, antibacterial agents, fungicides, dibutylhydroxytoluene (BHT), parahydroxybenzoic acid A stabilizer such as methyl, a pH adjuster, a colorant, a deodorant such as tea extract or tea dry distillation liquid, etc.
- a chemical solution of an aqueous formulation or an oily formulation may be appropriately blended, and in preparing a chemical solution of an aqueous formulation or an oily formulation.
- lower alcohols such as ethanol and isopropanol
- hydrocarbon solvents such as kerosene, ester or ether solvents
- solubilizers, and dispersants may be used as appropriate.
- the chemical solution thus prepared is filled in a container body (not shown) provided with a liquid core for heat evaporation to constitute a pest control product (mosquito trap liquid).
- the container for storing the chemical solution is generally a plastic container such as polyolefin such as polypropylene, polyester or polyvinyl chloride.
- a liquid absorption core is attached to the upper part of the chemical container via an inner plug.
- the material of the chemical container is preferably a polyolefin plastic such as polypropylene in consideration of the physical properties of the glycol ether compound and / or glycol compound.
- the liquid absorption core for heat evaporation of the mosquito trap liquid is roughly classified into a fired core, a string core, and a caking core.
- the raw material contains an inorganic powder, an inorganic binder, and an organic substance.
- the total weight (W 1 ) of the inorganic powder and the inorganic binder, and the organic substance Is a pyrethroid system in which the vapor pressure at 30 ° C.
- the liquid core for heat evaporation is a fired core
- the mixture containing (a) inorganic powder, (b) inorganic binder, and (c) organic substance is fired at 600 to 2000 ° C.
- the amount of (b) and (c) is small, and those formed from only (a) are usually often referred to as porous ceramic cores.
- the inorganic powder examples include mica, alumina, silica, talc, mullite, cordierite, and zirconia.
- mica is a preferable material because relatively uniform fine pores can be generated particularly in the liquid core for heat evaporation for mosquito-repellent liquid.
- the inorganic powders listed above may be used alone or in a mixed state.
- the content of the inorganic powder in the liquid core for heat evaporation is preferably 10 to 90% by mass, more preferably 30 to 70% by mass.
- the shape of the inorganic powder is preferably a fine powder of 50 mesh or less from the viewpoint of physical properties such as appearance, liquid absorption, and strength. However, this is not the case when a process such as pulverization is involved in the manufacturing process of the liquid core for heat evaporation.
- the inorganic binder examples include various clays such as clay (kaolin clay), bentonite, and halosite, tar pitch, and water glass. Among these, clay is a preferable material because it has excellent caking properties.
- the above-mentioned inorganic binders may be used alone or in a mixed state.
- the content of the inorganic binder in the liquid core for heat evaporation is preferably 5 to 50% by mass, and more preferably 10 to 40% by mass.
- An inorganic binder has a poor caking action at room temperature, but when it is baked at 600 to 2000 ° C., it exhibits a sufficient caking action and can be suitably used as a liquid core for heat evaporation.
- the organic substance examples include carbonaceous powders such as graphite, carbon black, activated carbon, charcoal, and coke, or organic binders such as carboxymethyl cellulose (CMC), acrylic resin, and polyolefin resin.
- carbonaceous powders such as graphite, carbon black, activated carbon, charcoal, and coke
- organic binders such as carboxymethyl cellulose (CMC), acrylic resin, and polyolefin resin.
- CMC carboxymethyl cellulose
- acrylic resin acrylic resin
- polyolefin resin polyolefin resin
- graphite is a preferred material because it has a relatively uniform shape and few impurities.
- the above-mentioned carbonaceous powder or organic binder may be used singly or may be used in a mixed state.
- the content of the organic substance in the liquid core for heat evaporation is preferably 5 to 40% by mass.
- gas such as carbon monoxide and carbon dioxide is generated in the process of firing the liquid core for heat evaporation, and continuous pores are generated in the liquid core for heat evaporation, and the liquid absorption occurs by capillary action.
- a porous structure sufficient to exhibit performance can be formed.
- the liquid core for heat evaporation has a preservative, 4,4′-methylenebis (2-methyl-6-t-butylphenol), stearyl- ⁇ - (3,5-di-t
- An antioxidant such as -butyl-4-hydroxyphenyl) propionate may be appropriately added.
- the conventional fired core has a long time period (that is, a period until heating of the liquid absorbent core) from when the liquid absorbent core is loaded into the chemical liquid until it is energized. Although there is no influence, the effective use period may be shortened, and there remains room for improvement in the stability of the transpiration performance of the absorbent core. With regard to this point, the present inventors have studied further improvement, and as a pyrethroid insecticide, a component having a vapor pressure in the range of 2 ⁇ 10 ⁇ 4 to 1 ⁇ 10 ⁇ 2 mmHg at 30 ° C. is used.
- the ratio of the weight of the organic material (W 2) (W 1 / W 2) is 4.0 to 10 It has been found that the above-mentioned problems can be solved if the preparation is performed so that It has not been fully confirmed yet how the ratio (W 1 / W 2 ) is involved in stabilizing the transpiration performance of the liquid absorbent core during the aging period before use.
- the fine pores generated due to the organic matter and the porous pores generated by the burning and melting of the organic material are efficiently distributed inside the liquid absorption core, which contributes to the stabilization of the transpiration performance. It is considered a thing. Further, it is presumed that the distribution state of the fine pores and the porous pores on the surface of the liquid absorption core appropriately maintains the adhesion with the inner plug described later, and leads to prevention of chemical leakage.
- the thus obtained liquid core for heating and evaporation of the present invention is applied to a liquid product of a type in which a chemical solution is evaporated by heating through the liquid absorbing core. That is, the said chemical
- the heating transpiration absorbent core is opposed to the hollow cylindrical heat radiating cylinder constituting the heating element with a gap, so that the desired surface temperature (for example, 60 to 130) above the heating transpiration absorbent core. ° C.) is achieved by setting the temperature of the heating element higher (for example, 80 to 150 ° C.). If the heating temperature of the chemical solution becomes too high, the chemical solution may evaporate early, or thermal decomposition or polymerization of the chemical solution may occur, resulting in the formation of high-boiling substances on the surface of the liquid absorption core, which accumulates. There is a risk of clogging. On the other hand, if the heating temperature is too low, the chemical solution is difficult to evaporate and sufficient insect repellent performance cannot be achieved.
- the heating and transpiration device used for the liquid core for heating and transpiration according to the present invention can be provided with various functions and members in addition to the above-described heating element in accordance with conventional devices.
- a protective cap is placed on the top of the heating element for safety, and an opening is formed in the center of the cap.
- the size and shape of the heating element is limited unless the vaporized chemical is excessively condensed or adhered to the protective cap or body.
- the distance between the lower end of the evaporation tube and the upper surface of the heating element is considered in terms of heat resistance and evaporation performance of the evaporation tube part.
- Is usually preferably in the range of 1 to 5 mm.
- a power cord connected to the heating element, an on / off operation switch, a pilot lamp, and the like may be appropriately provided.
- the sensitivity has been reduced, such as Akaieka, Kogataakaeka, Attaikaeka, Chikaieka, etc.
- flying insects such as house flies, butterflies, fleas, flies, flyfish, and mosquitoes, as well as mosquitoes such as house moss, Aedes aegypti, chironomids, etc. Very useful because it exhibits insecticidal efficacy.
- Example 1 0.9% by mass of transfluthrin, 50% by mass of diethylene glycol monobutyl ether (DEMB), 0.1% by mass of dibutylhydroxytoluene (BHT) as a stabilizer, and 49% by mass of purified water was prepared. Water is added to a mixture containing 55% by mass of mica powder as an inorganic powder, 32% by mass of clay powder as an inorganic binder, 10% by mass of graphite as an organic substance, and 3% by mass of carboxymethylcellulose as an organic binder. After kneading and extruding the kneaded product under pressure and air-drying, it was fired at 1000 ° C.
- DEMB diethylene glycol monobutyl ether
- BHT dibutylhydroxytoluene
- Example 1 round bar having a diameter of 7 mm and a length of 66 mm.
- the composition ratio of the ratio (W 1 / W 2 ) of the total weight (W 1 ) of mica powder and clay powder to the weight (W 2 ) of graphite was 6.7. .
- a heat evaporation device for example, the device described in Japanese Patent No.
- the upper part of the liquid core was attached to a hollow cylindrical heat radiating cylinder (inner diameter: 10 mm, height: 10 mm, surface temperature: 137 ° C.) to produce a pest control product.
- a pest control product was placed in the center of a 6 tatami room (25 m 3 ) and energized for 12 hours per day, it was not bitten by mosquitoes for 60 days (about 700 hours).
- Example 1 the chemicals used in Examples 2 to 9 and the liquid core for heat transpiration were prepared, and these were loaded into a heat transpiration device to produce the pest control products of Examples 2 to 9.
- Each of the pest control products was subjected to the following measurements (1) to (3) and tests. For comparison, the same measurements and tests were performed on the pest control products of Comparative Examples 1 to 4.
- Table 1 shows the formulation of the chemical solution and the composition of the liquid core for heat evaporation in each Example and Comparative Example. Table 1 also describes the formulation and formulation of Example 1.
- Transpiration performance A test heating transpiration device was placed in the center of a 6 tatami room (25 m 3 ) and heated by energization. After trapping with a silica gel packed column every predetermined time and extracting the insecticidal component with acetone, the amount of transpiration of the insecticidal component per unit time was determined by gas chromatographic analysis. The transpiration performance was determined for the initial period of use (second day of use), middle period of use (the day when the expiration date is about 50%), and late use (several days before the expiration date).
- Table 2 shows the test results in each example and comparative example.
- the results of the tests, the heating transpiration for the wick of Examples 1-9, the total weight of the inorganic powder and inorganic binder (W 1), the ratio of the weight of the organic material (W 2) (W 1 / W 2 ) is set to 4.0 to 10, so that stable transpiration performance and high insecticidal efficacy can be achieved during use, and it is possible to prevent chemical leakage due to an increase in internal pressure of the chemical solution container and chemical solution leakage due to the overturn of the chemical solution container.
- the effective use period is not substantially shortened even if the elapsed time from when the absorbent core is loaded into the chemical solution until the energization is used is long, and the absorption is performed over the entire period from the time of manufacture to after use.
- the liquid core for heat evaporation of the present invention is extremely effective in controlling flying insect pests, particularly mosquitoes.
- the glycol ether compound and / or glycol compound preferably has a boiling point in the range of 150 to 300 ° C. won.
- mica was suitable as the inorganic powder, clay as the inorganic binder, and graphite as the carbonaceous powder.
- the ratio (W 1 / W 2 ) between the total weight (W 1 ) of the inorganic powder and the inorganic binder and the weight (W 2 ) of the organic substance is out of 4.0 to 10
- the liquid absorbent wicks of Examples 2 to 4 can show comparatively stable transpiration performance and high insecticidal efficacy immediately after production, but they are used after energization after the liquid absorbent wick is loaded in the chemical solution. When the time-lapse period until this was long, the effective use period tended to be shortened.
- the present invention can be used in pest control products for human bodies and pets, but can also be used for other purposes such as insecticidal, acaricidal, sterilizing, antibacterial, deodorizing, and deodorizing. It is.
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Abstract
Description
30℃における蒸気圧が2×10-4~1×10-2mmHgであるピレスロイド系殺虫成分を含有する薬液を蒸散させるための加熱蒸散用吸液芯の製造方法であって、原材料として、無機質粉体と、無機質粘結剤と、有機物質とを混合する混合工程と、混合した原材料を焼成する焼成工程と、を包含し、前記混合工程において、前記無機質粉体及び前記無機質粘結剤の合計重量(W1)と、前記有機物質の重量(W2)との比率(W1/W2)が4.0~10となるように、前記原材料が調製されることにある。
トランスフルトリンを0.9質量%、ジエチレングリコールモノブチルエーテル(DEMB)を50質量%、安定剤としてジブチルヒドロキシトルエン(BHT)を0.1質量%、及び精製水を49質量%配合し、水性処方薬液を調製した。
無機質粉体としてマイカ粉を55質量%、無機質粘結剤としてクレー粉を32質量%、有機物質として黒鉛を10質量%、有機質粘結剤としてカルボキシメチルセルロースを3質量%含む混合物に水を加えて混練し、混錬物を加圧しながら押出し、風乾した後、1000℃で焼成し、実施例1の加熱蒸散用吸液芯(直径7mm、長さ66mmの丸棒)を得た。この加熱蒸散用吸液芯において、マイカ粉及びクレー粉の合計重量(W1)と、黒鉛の重量(W2)との比率(W1/W2)の組成比率は6.7であった。
水性処方薬液45mLをプラスチック製容器に充填し、中栓を介して加熱蒸散用吸液芯を装填したのち、加熱蒸散装置[例えば、特許第2926172号等に記載された装置、吸液芯の上部の周囲に中空筒状の放熱筒体(内径:10mm、高さ:10mm、表面温度:137℃)を設置]に取り付け、害虫防除製品を作製した。
この害虫防除製品を6畳の部屋(25m3)の中央に置き、1日あたり12時間通電して使用したところ、60日間(約700時間)にわたり、蚊に刺咬されることがなかった。
実施例1に準じて、実施例2~9で使用する薬液及び加熱蒸散用吸液芯を調製し、これらを加熱蒸散装置に装填して実施例2~9の害虫防除製品を作製した。そして、各害虫防除製品について、後述する(1)~(3)の測定及び試験を実施した。また、比較のため、比較例1~4の害虫防除製品についても、同様の測定及び試験を実施した。各実施例及び比較例における薬液の処方及び加熱蒸散用吸液芯の配合を表1に示す。なお、表1には実施例1の処方、及び配合についても記載する。
6畳の部屋(25m3)の中央に供試加熱蒸散装置を置き、通電加熱した。所定時間毎にシリカゲル充填カラムでトラップし、アセトンで殺虫成分を抽出後、ガスクロマトグラフ分析により単位時間当たりの殺虫成分の蒸散量を求めた。蒸散性能は、使用初期(使用日数2日目)、使用中期(有効期限が残り約50%の日)、及び使用後期(有効期限の数日前)について求めた。
内径20cm、高さ43cmのプラスチック製円筒を2段に重ね、その上に16メッシュの金網を介して内径20cm、高さ20cmの円筒(供試昆虫を入れる場所)を載せ、その上を同じ16メッシュの金網で仕切り、さらにその上に同径で高さ20cmの円筒を載せた。この4段重ねの円筒を台に載せた円板上にゴムパッキンを挟んで置いた。円板中央には5cmの円孔があり、この円孔の上に加熱蒸散装置を設置し、通電加熱した。通電4時間後、上部3段目の円筒に供試昆虫のアカイエカ雌成虫約20匹を放った。時間経過に伴い落下仰転した供試昆虫を数え、KT50値を求めた。また、暴露20分後に全供試昆虫を回収して24時間後にそれらの致死率を調べた。殺虫効力試験は、使用初期(使用日数2日目)及び使用後期(有効期限の数日前)について実施した。
市場流通中における吸液芯の蒸散性能に対する経時的安定性を評価するため、プラスチック製容器に薬液を充填後、吸液芯をセットして40℃で保存した。保存開始前、並びに6ケ月経過後(通常室温条件で3年に相当)のサンプルにつき、所定の加熱蒸散装置に装填して使用試験を行い、それぞれの有効使用日数を判定した。そして、短縮率=[6ケ月経過後のサンプルの日数]/[保存開始前のサンプルの日数]を求め、これを経時的安定性の指標とした。
Claims (11)
- 30℃における蒸気圧が2×10-4~1×10-2mmHgであるピレスロイド系殺虫成分を含有する薬液を蒸散させるための加熱蒸散用吸液芯であって、
原材料として、無機質粉体と、無機質粘結剤と、有機物質とを含み、
前記原材料において、前記無機質粉体及び前記無機質粘結剤の合計重量(W1)と、前記有機物質の重量(W2)との比率(W1/W2)が4.0~10に設定されている加熱蒸散用吸液芯。 - 前記有機物質は、炭素質粉体を含む請求項1に記載の加熱蒸散用吸液芯。
- 前記有機物質は、有機質粘結剤をさらに含む請求項2に記載の加熱蒸散用吸液芯。
- 前記薬液は、沸点が150~300℃であるグリコールエーテル系化合物及び/又はグリコール系化合物と、水とをさらに含む請求項1~3の何れか一項に記載の加熱蒸散用吸液芯。
- 前記ピレスロイド系殺虫成分は、トランスフルトリン、メトフルトリン、及びプロフルトリンからなる群から選択される少なくとも一種である請求項1~4の何れか一項に記載の加熱蒸散用吸液芯。
- 前記無機質粉体は、マイカ、アルミナ、シリカ、タルク、ムライト、コージライト、及びジルコニアからなる群から選択される少なくとも一種である請求項1~5の何れか一項に記載の加熱蒸散用吸液芯。
- 前記無機質粘結剤は、クレー、ベントナイト、ハロサイト、及びタールピッチからなる群から選択される少なくとも一種である請求項1~6の何れか一項に記載の加熱蒸散用吸液芯。
- 前記炭素質粉体は、黒鉛、カーボンブラック、活性炭、木炭、及びコークスからなる群から選択される少なくとも一種である請求項2~7の何れか一項に記載の加熱蒸散用吸液芯。
- 30℃における蒸気圧が2×10-4~1×10-2mmHgであるピレスロイド系殺虫成分を含有する薬液を蒸散させるための加熱蒸散用吸液芯の製造方法であって、
原材料として、無機質粉体と、無機質粘結剤と、有機物質とを混合する混合工程と、
混合した原材料を焼成する焼成工程と、
を包含し、
前記混合工程において、前記無機質粉体及び前記無機質粘結剤の合計重量(W1)と、前記有機物質の重量(W2)との比率(W1/W2)が4.0~10となるように、前記原材料が調製される加熱蒸散用吸液芯の製造方法。 - 前記焼成工程は、600~2000℃で実施される請求項9に記載の加熱蒸散用吸液芯の製造方法。
- 請求項1~8の何れか一項に記載の加熱蒸散用吸液芯を用いた加熱蒸散方法であって、
前記加熱蒸散用吸液芯を前記薬液に浸漬し、吸液された前記薬液を前記加熱蒸散用吸液芯の上部に導き、60~130℃で加熱することにより前記ピレスロイド系殺虫成分を大気中に蒸散させる加熱蒸散方法。
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