Method to control termites

Details Method to control termites Method to control termites

2000-11-21

2002-07-23

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...

Reexamination Certificate

active

06423730

ABSTRACT:

The present invention relates to a method for controlling termites by treating the termites or the locus wherein the termites live, with a 5-carboxanilido-bis-trifluoromethyl-thiazole fungicide. This invention also relates to a method for controlling the damage caused by termites and to termite damage resistant articles.
The wood protection industry requires products that provide protection against wood destroying insects, especially termites. In the United States alone the annual damage caused by termites is placed at approximately US$ 1.4 Billion. Presently, the most effective agents for controlling termites or the damage caused by termites are based upon copper-chrome-arsenic (CCA) or insecticides such as chlorpyrifos, synthetic pyrethroids, and aldrin. However, these materials do not have the combination of biological and physicochemical properties necessary for effective termite control (residual activity against termites combined with acceptable environmental effects and low mammalian toxicity). Therefore, there is continuing need for new materials which can be used to control termites and which do not possess the unwanted characteristics of currently used materials.
U.S. Pat. No. 5,045,554 discloses a class of substituted 5-carboxanilidothiazoles useful for control of plant fungus disease such as, for example Basidiomycetes such as Rhizoctonia, Sclerotium, and Corticium, as well as Alternaria and Spirothica, when applied to the growing plant, preferably as a foliar spray. Such 5-carboxanilidothiazoles are not known to have significant insecticidal activity. We have discovered that certain of these 5-carboxanilidothiazoles are surprisingly effective as termiticides.
The present invention provides a method for controlling termites comprising applying to termites or to a locus of the termites a termiticidaly effective amount of a composition comprising one or more compounds of Formula I:
and salts thereof;
wherein: each R is independently halo (preferably chloro, bromo, or iodo), halo(C
1
-C
5
)alkyl (preferably halo(C
1
-C
2
)alkyl, more preferably perhalomethyl, most preferably trifluoromethyl), halo(C
1
-C
5
)alkoxy (preferably halo(C
1
-C
2
)alkoxy, more preferably perhalomethoxy, most preferably trifluoromethoxy), nitro, cyano, pentahalosulfur (preferably pentafluorosulfur), halomethylthio, haloethylthio, (C
1
-C
2
)alkylsulfinyl, halo(C
1
-C
2
)alkylsulfinyl, (C
1
-C
2
)alkylsulfonyl, or halo(C
1
-C
2
)alkylsulfonyl; n is from two to five (preferably two to four, more preferably three to four, most preferably three). Salts of the compound of Formula I include salts of strong bases, preferably a salt from reaction with sodium or potassium hydroxide, diazabicycloundecene, or diazabicyclononane, more preferably a salt formed from reaction with sodium or potassium hydroxide. Preferably each R is independently halo, haloalkyl, or haloalkoxy. Preferably, at least one, more preferably at least two, of the R groups are located in the ortho and/or para positions.
The term “locus” means the environment in which termites are found or the environment in which the compound of Formula I may be released such that it subsequently comes into contact with termites. Such loci include, for example, timber, timber-based construction, foundations and pillars of buildings, wood and wood products, soil, crops, grassland, forests (trees and fallen logs), cellulose and cellulose-based materials, termite nests, coating materials for wires and cables, and the like. The term “termiticidaly effective amount” means the quantity of compound which provides a desired level of termite control.
The term “carboxanilido” means C
6
H
5
—NH—CO—. The term “alkyl” means straight or branched chain (C
1
-C
5
)alkyl, unless otherwise specified. The term “substituted aryl” means an aryl group having one or more of its hydrogens replaced with another substituent group.
The term “lipophilic” means having an affinity for organic solvents rather than aqueous solvents.
The term “active ingredient” means a compound of Formula I and/or any other compound with pesticidal activity.
As used herein, all percentages are percent by weight, unless otherwise specified. All percentage ranges are inclusive. All ratios are by weight and all ratio ranges are inclusive.
Another embodiment this invention provides a method to control termite damage comprising applying to a locus of termites a termiticidaly effective amount of a composition comprising one or more compounds of Formula I as described above. A third embodiment of this invention provides articles of manufacture which are resistant to termite damage.
The advantage of the use of a compound of Formula I as a termiticide lies in its efficacy at low treatment rates and its non-repellent effect on termites. Known methods for termite treatment necessitate the use of relatively large amounts of a termiticide to create a physical barrier of relatively high chemical concentration sufficient to kill some of the termites and deter others from immediately reinfesting the treated locus. The present invention effectively eliminates termite populations by allowing a large number of termites to actually visit, contact, and carry away a small but efficacious amount of the termiticidal compound of Formula I.
The compounds of Formula I can be applied to various loci such as the soil, any wood or cellulose-based material, or an area visited or occupied by termites. For such purposes these compounds can be used in the technical or pure form as prepared or as formulated compositions. Solid compositions include, for example: wettable powders typically containing, for example, from 10 to 90%, preferably from 50 to 90% active ingredient, from 2 to 10% dispersing agents, up to 10% stabilizers and/or other additives such as penetrants, stickers, and surfactants, and a solid inert carrier such as clay, silica, or natural or synthetic carrier; dusts which are usually formulated as a concentrate having a composition similar to a wettable powder but without dispersant and usually containing from 0.5 to 10% active ingredient; granules containing, for example, from 0.01 to 80% active ingredient and 0 to 10% additives such as stabilizers, surfactants, slow release modifiers, and binding agents which are prepared by, for example, agglomeration or impregnation techniques and have a size greater than wettable powders and up to 1-2 millimeters; and baits containing, for example, from 0.01 to 25% active ingredient prepared by combining the active ingredient with a cellulose-based material and other additives. Liquid compositions include, for example, aqueous or solvent based solutions, emulsifiable concentrates, emulsions, suspension concentrates, and flowables which typically contain from 0.01 to 99.9% of the active ingredient, an acceptable carrier, and one or more adjuvants. More typically such liquid compositions will contain from 1.0 to 85% of the active ingredient.
As used herein, the term “carrier” means any material with which the compound of Formula I is formulated to facilitate application to the locus or to facilitate storage, transport, or handling of the compound of Formula I. A carrier may be a solid or liquid, including a material which is normally gaseous but which has been compressed to form a liquid. Any of the carriers typically useable in formulating insecticidal compositions may be used. Suitable solid carriers include, for example, natural and synthetic clays and silicates, salts such as calcium carbonate and ammonium sulfate, carbon-based materials such as charcoal and bitumen, sulfur, natural and synthetic resins, waxes, agar, fertilizers, cellulose-based materials such as sawdust and corn cobs, and mixtures thereof. Suitable liquid carriers include, for example, water, alcohols, ketones, ethers, aromatic and aliphatic hydrocarbons, petroleum fractions, chlorinated hydrocarbons, polar organic liquids, and mixtures thereof. Combinations of solid and liquid carriers may also be used.
It is usually desirable, particularly in the case of sprayable formulations, to include one or more adjuv

Affiliated with

Also associated with

Rating

Method to control termites does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method to control termites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method to control termites will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2881979