Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
1999-06-29
2001-03-13
Robinson, Allen J. (Department: 1616)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
C514S063000, C514S421000, C514S461000, C514S521000, C514S531000, C514S721000
Reexamination Certificate
active
06201008
ABSTRACT:
DETAILED DESCRIPTION OF THE INVENTION
Field of Art in Which the Invention Belongs
The present invention relates to a pesticidal composition which is effective in particular against vector or nuisance pests such as cockroaches and house dust mites and wood pests such as termites, and a method for controlling such noxious insects and/or acarina.
Various kinds of pesticidal agents have been developed in the past, but it has been hard to control cockroaches, which are said a prototype of vector or nuisance pests, and no effective means for control of the cockroaches has yet been made available.
Also, in view of increase damages by house dust mites in recent years, development of a pesticidal composition capable of controlling both of cockroaches and house dust mites has been desired.
The present invention provides a pesticidal composition which comprises 4-bromo-2-(4-chlorophenyl)-1-ethoxymethyl-5-trifluoromethylpyrrole-3-carbonitrile and at least one pyrethroidal compound as active ingredients (this composition being hereinafter referred to as the composition of the present invention), and a method for controlling noxious insects and/or acarina which comprises applying an effective amount of 4-bromo-2-(4-chlorophenyl)-1-ethoxymethyl-5-trifluoromethylpyrrole-3-carbonitrile and at least one pyrethroidal compound to the noxious insects and/or acarina, or the locus where the noxious insects and/or acarina inhabit. Both the composition and method are very effective for controlling vector or nuisance pests, particularly cockroaches and house dust mites.
The composition and the method of the present invention are also highly effective for control of wood pests such as termites.
4-Bromo-2-(4-chlorophenyl)-1-ethoxymethyl-5-trifluoromethylpyrrole-3-carbonitrile is a compound disclosed in The Pesticide Manual, 10th ed., pp. 7-8, published by The British Crop Protection Council, and can be produced according to the processes described in U.S. Pat. No. 4,857,651, etc.
The pyrethroidal compounds which may be used in the present invention include, for example, phenothrin, cyphenothrin, permethrin, cypermethrin, deltamethrin, cyhalothrin, cyfluthrin, acrinathrin, furamethrin, resmethrin, prallethrin, allethrin, fenvalerate, ethofenprox, silafluofen, fluvalinate, flucythrinate, tetramethrin, imiprothrin, transfluthrin, empenthrin, bifenthrin, and 3-(4-ethoxy-phenyl)-3-methyl-6-(4-fluoro-3-phenoxyphenyl)hex-1-yne.
The weight ratio of 4-bromo-2-(4-chlorophenyl)-1-ethoxymethyl-5-trifluoromethylpyrrole-3-carbonitrile to the pyrethroidal compound(s) in the composition of the present invention is usually within the range of 99:1 to 5:95, preferably 99:1 to 10:90.
Especially when the pyrethroidal compound is phenothrin, cyphenothrin, permethrin, cypermethrin, ethofenprox or silafluofen, the weight ratio of 4-bromo-2-(4-chlorophenyl)-1-ethoxymethyl-5-trifluoromethylpyrrole-3-carbonitrile to the pyrethroidal compound is preferably within the range of 90:10 to 10:90, more preferably 90:10 to 50:50, as the combination of said ingredients with their weight ratio in the above-defined range is capable of more efficient control of vector or nuisance and wood pests owing to the excellent synergistic effect of the two ingredients.
While the composition of the present invention has the excellent pesticidal activities against various species of pests, it shows particularly high efficacy for control of vector or nuisance pests including cockroaches such as German cockroach [
Blattella germanica
], smokybrown cockroach [
Periplaneta fuliqinosa
], American cockroach [
Periplaneta americana
], brown cockroach [
Periplaneta brunnea
] and oriental cockroach [
Blatta orientalis
], house mites such as mold mite [
Tyrophagus putrescentiae
], American house dust mite [
Dermatophagoides farinae
] and Cheyletid mites [Chelacaropsis], fleas such as cat flea [
Ctenocephalides felis
], mosquitos such as brown house mosquito [
Culex pipiens pallens
] and Asian tiger mosquito [
Aedes albopictus
], and flies such as housefly [
Musca domestica
], and wood pest including termites such as Formosan substerranean termite [
Copptotermes formosanus
], Japanese subterranean termite [
Reticulitermes speratus
], American common dry-wood termite [
Incistermes minor
], Daikoku dry-wood termite [
Cryptotermes domesticus
], Odontotermes formosanus,
Coptotermes formosanus, Reticulitermes speratus, R. flavipes, R. hesperus, R. virqinicus, R. tibialis, Incisitermes minor, Cryptotermes domesticus, Odontotermes formosanus
, and
Heterotermes aureus
, termite species of the families (and pest genera) Mastotermitidae (Mastotermes species), Hodotermididae (Anacanthotermes, Zootermopsis species), Rhinotermitidae (Coptotermes, Heterotermes, Reticulitermes, Psammotermes, Prorhinotermes, Schedorhinotermes species), Kalotermitidae (Glyoptotermes, Neotermes, Cryptotermes, Incisitermes, Kalotermes, Marqinitermes species), Serritermitidae, and Termitidae (Pericapritermes, Allodontermes, Microtermes, Odontotermes, Nasutitermes, Termes, Amitermes, Globitermes, Microcerotermes species), Termopsidae (Hodotermopsis, Zootermopsis species), and other pest species of termites, raw logvermin such as bark beetles [Scolytidae], longicorn beetles [Cerambycidae], weevils [Curculionidae], pinhole borers [Platypodidae] and horntails [Siricidae], and dry wood vermin such as powderpost beetle [
Lyctus brunneus
], false powderpost beetles [Bostrychidae], deathwatch and drugstore beetles [Anobiidae] and dry-wooden
longicorn
bettle [
Stromatium longicorne].
The composition of the present invention is also useful for control of agricultural pests such as diamondback moth [
Plutella xylostella
], common cabbageworm [
Pieris rapae crucivora
], tobaccocutworm [
Spodoptera litura
], melon thrips [
Thrips palmi
], tea green leafhopper [
Empoasca onukii
], appleleafminer [
Phyllonorycter ringoniella
], rice water weevil [
Lissorhoptrus oryzophilus
], Japanese beetle [
Popillia japonica
], striped flea beetle [Phyllotreta], Kanzawa spidermite [
Tetranychus kanzawai
] and broad mite [
Polyphagotarsonemus latus].
The composition of the present invention can be obtained usually by mixing the active ingredient compounds with a solid or liquid carrier and if necessary further adding a surfactant and other adjuvants necessary for formulating the desired preparations. The active ingredient compounds or a liquid containing them may be impregnated, for instance, in the base of a mosquito coil or mosquito mat. The composition of the present invention thus obtained may be in various formulation types, for example, oil solution, emulsifiable concentrate, wettable powder, and flowables such as suspension-in-water and emulsion-in-water, granules, dusts, aerosols, fumigants such as electric mosquito mat or liquid, smoking preparations such as mosquito coil, self-burning type smoking preparations, chemical reaction type smoking preparations and electrically heated type smoking preparations, fuming preparations such as fogging, and ULV preparations.
In these formulation, the active ingredient compounds are contained in a total amount of usually 0.001 to 95% by weight.
The solid carriers usable in these formulations include fine powders or granules of clays (kaolin clay, diatomaceous earth, bentonite, fubasami clay, acid clay, etc.), synthetic hydrous silicon oxide, talcs, ceramics, other inorganic minerals (sericite, quartz, sulfur, active carbon, calcium carbonate, etc.), and chemical fertilizers (ammonium sulfate, ammonium phosphate, ammonium nitrate, urea, ammonium chloride, etc.). The liquid carriers include water, alcohols (methanol, ethanol, etc.), ketones (acetone, methyl ethyl ketone, cyclohexanone, etc.), aromatic hydrocarbons (toluene, x
Fujimoto Izumi
Takada Yoji
Pillsbury & Winthrop LLP
Robinson Allen J.
Sumitomo Chemical Co,. Ltd.
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