Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Biocides; animal or insect repellents or attractants
Reexamination Certificate
1998-02-10
2001-08-07
Harrison, Robert H. (Department: 1619)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Biocides; animal or insect repellents or attractants
C424S409000, C514S531000, C514S594000
Reexamination Certificate
active
06270784
ABSTRACT:
The present invention relates to new active compound combinations of pyrethroids with insect development inhibitors, for achieving a long-term effect against animal pests, in particular insects and arachnids, having high effectiveness, fewer environmentally polluting properties and a toxicologically favorable control concept.
Combinations of different insecticidal agents have been used for a long time to control insects in interior spaces. In this case, insecticidal compound classes which have no cross-resistances are usually combined with one another. In this manner, formulations are obtained which also have a good action against resistant species (W. Behrenz, K. Naumann, Pflanzenschutz-Nachrichten Bayer, 35, 309 (1982)).
In order to obtain a flushing effect and immediate action (“knock-down action”) and long-term action against insects (“residual action”), until now phosphoric acid esters, carbamates and long term-stable pyrethroids were combined with one another (C. Fest, K.-J-. Schmidt, The Chemistry of Organophosphorus Pesticides, Springer-Verlag, Berlin (1982); W. Behrenz, E. Böcker, Pflanzenschutznachrichten Bayer, 18, 53 (1965); I. Hammann, R. Fuchs, ibid. 34, 123 (1981) and references cited there).
Recently, various inhibitors of insect development have been disclosed. These are so-called juvenile hormones and chitin synthesis inhibitors from the benzoylureas class, which specifically affect the development cycle of insects by preventing the conversion of the individual larval stages into the next higher development stages.
This principle of action is specifically suitable to insects and is not found in warm-blooded animals. Besides an extremely effective suppression of the development of new insect generations, the complete absence of side effects on the warm-blooded animals also results from this, whereby a toxicologically favorable control concept is achieved. However, development inhibitors of this type do not have any action on adult stages of insects, so that the action only occurs after a waiting time of up to two weeks. For specific control of pests, in particular insects and arachnids, insecticides must therefore be found which, together with development inhibitors, on the one hand have a flushing effect and an immediate action (“knock-down action”), but on the other hand also persist with a long-term action (residual action) over several development stages of the pests, which is why both active compounds have to be supplemented in an optimum manner.
Surprisingly, it has now been found that by combination of synthetic pyrethroids or natural pyrethrum, which is distinguished as an individual active compound by good knock-down properties and a good flushing effect, but only acts for up to a few days, with insect development inhibitors, a long-term action with excellent effectiveness, fewer environmentally polluting properties and a toxicologically more favourable control concept can be achieved.
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Chemical Abstract 106:115190m.*
W. Behrenz, K. Naumann, Pflanzenschutz-Nachrichten Bayer, 35, 309 (1982).*
C. Fest, K.-J. Schmidt, The Chemistry of Organophosphorus Pesticides, Springer-Verlag, Berlin (1982).*
W. Behrenz, E. Böcker, Pflanzenschutznachrichten Bayer, 18, 53 (1965).*
I. Hammann, R. Fuchs, Pflanzenschutznachrichten Bayer, 34, 123 (1981).*
K. Mrusek in Proc. 1st Int. Conf. Insect Pests in the Urban Environment, Hrsg. K. 1993, 385.*
Chemical Patents Index, Documentation Abstacts Journal, Section CH, Week 9538, Derwent Publications Ltd., London, G.B. Class C03, AN 95-290227 XP002021231 & JP, A, 07 187 922 (Sumitomo Chem. Co. Ltd), Jul. 25, 1995.*
Pesticide Science, Bd. 14, nr. 3, Jun. 1983, Barking GB, Seiten 246-252, XP002021224, M.A. El-Guindy, et al.: “The Joint action . . . ”.*
Chemical Abstracts, vol. 102, No. 9, Mar. 4, 1985, Columbus, OH, US; Abstract No. 74117q, J.L. Robertson, et al.: “Western spruces budworm: . . . ingestion.”*
Chemical Abstracts, vol. 106, No. 15, 13. Apr. 1987, Columbus, OH, US; Abstract No. 115190m, K.A. Kulkarni, et al.: “Effect of synthetic . . . properties.”*
Journal of Economic Entomology, Bd. 84, Nr. 6, 1991, College Park, Maryland US, Seiten 1957-1968, XP002021225 G.A. Hughes et al.: “Multinomial logit . . . mixtures.”
Mrusek Klaus
Schutte Manfred-Heinrich
Bayer Aktiengesellschaft
Harrison Robert H.
Norris McLaughlin & Marcus P.A.
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