Pesticides based on cyclic polysiloxanes

Details Pesticides based on cyclic polysiloxanes Pesticides based on cyclic polysiloxanes

1998-05-21

2003-05-20

Wilson, James O. (Department: 1623)

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Silicon containing doai

C556S460000, C556S462000

Reexamination Certificate

active

06566348

ABSTRACT:

The present invention relates to immediately acting pest control compositions based on cyclic polysiloxanes which can be employed without a residue and without a lasting action.
It was known that cyclic polysiloxanes having 4 and 5 siloxane units are insecticidally active. It was also known that insects can be killed by spraying using polysiloxanes (U.S. Pat. No. 4 654 328).
Use in practice shows, however, that problems occur during use. Cyclic polysiloxanes having 4 siloxane units crystallize out at temperatures below about 18° C. and can then no longer be sprayed without problems. No satisfactory action results from spraying insects with cyclic polysiloxanes from aerosol sprays which produce an average droplet size of 50&mgr;.
The invention therefore relates to the following mixtures and compositions:
1. Immediately acting insecticidal and acaricidal composition which can be used without a residue and without a lasting action and is based on cyclic polysiloxanes of the formula (I)
in which
R represents identical or different radicals from the group consisting of methyl, ethyl and propyl,
n represents integers from 3 to 6,
which are sprayed onto the pests in the customary manner with an average droplet size in the spray mist of 130 to 500&mgr; (diameter).
2. Composition according to point 1 (above), characterized in that it predominantly comprises, as the constituent of the formula (I), compounds in which the index n is 5.
3. Mixture of cyclic polysiloxanes of the formula (I)
in which
R represents identical or different radicals from the group consisting of methyl, ethyl and propyl,
n represents integers from 3 to 6,
characterized in that the constituents of the formula (I) with the indices 4 and 5 is present in the weight ratio
n=4<85% (weight)
n=5>15% (weight).
4. Mixture according to point 3 (above), characterized in that the constituents of the formula (I) with the indices 4 and 5 are present in the weight ratio
n=4 85 to 50% by weight
n=5 15 to 50% by weight.
5. Mixture according to point 3 (above), characterized in that the constituents of the formula (I) with the indices 4 and 5 are present in the weight ratio
n=4 80 to 60% by weight
n=5 20 to 40% by weight.
6. Mixture according to point 3 (above), characterized in that the constituents of the formula (I) with the indices 4 and 5 are present in the weight ratio
n=4 75% by weight
n=5 25% by weight.
The compositions according to the invention have considerable advantages for practical use. Their action on pests starts immediately, i.e. the user sees the success of the control measure directly. The active compound acts exclusively in direct contact with the pest, and preventive treatment (residual action) is not possible. The compositions are used only during an acute attack and only directly on the pests to be controlled. That is to say, no preventive and superfluous amounts of active compound are spread into the environment.
Beneficial organisms can be protected by the controlled use. The active compound is non-toxic to plants, mammals and humans.
The active compound evaporates rapidly from surfaces affected (plants, furniture, walls, window panes), without leaving behind residues.
The active compound is degraded abiotically within a short time by the action of light.
The compositions according to the invention are suitable for controlling animal pests, preferably arthropods, in particular insects and arachnids, which are encountered in agriculture, in forestry, in the protection of stored products and of materials, and in the field of hygiene. They are active against normally sensitive and resistant species and against all or some stages of development.
The abovementioned pests include:
From the order of the Isopoda, for example,
Oniscus asellus, Armadillidium vulgare
and
Porcellio scaber.
From the order of the Diplopoda, for example,
Blaniulus guttulatus.
From the order of the Chilopoda, for example,
Geophilus carpophagus
and
Scutigera spec.
From the order of the Symphyla, for example,
Scutigerella immaculata.
From the order of the Thysanura, for example,
Lepisma saccharina.
From the order of the Collembola, for example,
Onychiurus armatus.
From the order of the Orthoptera, for example,
Blatta orientalis, Periplaneta americana, Leucophaea maderae, Blattella germanica, Acheta domesticus
, Gryllotalpa spp.,
Locusta migratoria migratorioides, Melanoplus differentialis
and
Schistocerca gregaria.
From the order of the Dermaptera, for example,
Forficula auricularia.
From the order of the Isoptera, for example, Reticulitermes spp.
From the order of the Anoplura, for example,
Pediculus humanus corporis
, Haematopinus spp. and Linognathus spp.
From the order of the Mallophaga, for example, Trichodectes spp. and Damalinea spp.
From the order of the Thysanoptera, for example,
Hercinothrips femoralis
and
Thrips tabaci.
From the order of the Heteroptera, for example, Eurygaster spp.,
Dysdercus intermedius, Piesma quadrata, Cimex lectularius, Rhodnius prolixus
and Triatoma spp.
From the order of the Homoptera, for example,
Aleurodes brassicae, Bemisia tabaci, Trialeurodes vaporariorum, Aphis gossypii, Brevicoryne brassicae, Cryptomyzus ribis, Aphis fabae, Aphis pomi, Eriosoma lanigerum, Hyalopterus arundinis, Phylloxera vastatrix
, Pemphigus spp.,
Macrosiphum avenae
, Myzus spp.,
Phorodon humuli, Rhopalosiphum padi
, Empoasca spp.,
Euscelis bilobatus, Nephotettix cincticeps, Lecanium corni, Saissetia oleae, Laodelphax striatellus, Nilaparvata lugens, Aonidiella aurantii, Aspidiotus hederae
, Pseudococcus spp. and Psylla spp.
From the order of the Lepidoptera, for example,
Pectinophora gossypiella, Bupalus piniarius, Cheimatobia brumata, Lithocolletis blancardella, Hyponomeuta padella, Plutella maculipennis, Malacosoma neustria, Euproctis chrysorrhoea
, Lymantria spp.,
Bucculatrix thurberiella, Phyllocnistis citrella
, Agrotis spp., Euxoa spp., Feltia spp.,
Earias insulana
, Heliothis spp.,
Laphygma exigua, Mamestra brassicae, Panolis flammea, Prodenia litura
, Spodoptera spp.,
Trichoplusia ni, Carpocapsa pomonella
, Pieris spp., Chilo spp.,
Pyrausta nubilalis, Ephestia kuehniella, Galleria mellonella, Tineola bisselliella, Tinea pellionella, Hofinannophila pseudospretella, Cacoecia podana, Capua reticulana, Choristoneura fumiferana, Clysia ambiguella, Homona magnanima
and
Tortrix viridana.
From the order of the Coleoptera, for example,
Anobium punctatum, Rhizopertha dominica, Bruchidius obtectus, Acanthoscelides obtectus, Hylotrupes bajulus, Agelastica alni, Leptinotarsa decemlineata, Phaedon cochleariae
, Diabrotica spp.,
Psylliodes chrysocephala, Epilachna varivestis
, Atomaria spp.,
Oryzaephilus surinamensis
, Anthonomus spp., Sitophilus spp.,
Otiorrhynchus sulcatus, Cosmopolites sordidus, Ceuthorrhynchus assimilis, Hypera postica
, Dermestes spp., Trogoderma spp., Anthrenus spp., Attagenus spp., Lyctus spp.,
Meligethes aeneus
, Ptinus spp.,
Niptus hololeucus, Gibbium psylloides
, Tribolium spp.,
Tenebrio molitor
, Agriotes spp., Conoderus spp.,
Melolontha melolontha, Amphimallon solstitialis
and
Costelytra zealandica.
From the order of the Hymenoptera, for example, Diprion spp., Hoplocampa spp., Lasius spp.,
Monomorium pharaonis
and Vespa spp.
From the order of the Diptera, for example, Aedes spp., Anopheles spp., Culex spp.,
Drosophila melanogaster
, Musca spp., Fannia spp.,
Calliphora erythrocephala
, Lucilia spp., Chrysomyia spp., Cuterebra spp., Gastrophilus spp., Hyppobosca spp., Stomoxys spp., Oestrus spp., Hypodermna spp., Tabanus spp., Tannia spp.,
Bibio hortulanus, Oscinella frit
, Phorbia spp.,
Pegomyia hyoscyami, Ceratitis capitata, Dacus oleae
and
Tipula paludosa.
From the order of the Siphonaptera, for example,
Xenopsylla cheopis
and Ceratophyllus spp.
From the order of the Arachnida, for example,
Scorpio maurus
and
Latrodectus mactans.
From the order of the Acarina, for example,
Acarus siro
, Argas spp., Ornithodoros spp.,
Dermanyssus gallinae, Eriophyes ribis, Phyllocoptruta olei

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