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US 5,242,907 AGranted
Pesticidal control
AssigneeNC Development, Inc.
InventorHoward B. Dawson
Life of this patent
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AssigneeNC Development, Inc.
InventorHoward B. Dawson
Estimating the term…
Tropical and temperate crops, particularly rice, maize, cotton, soya and fruit, can be protected, particularly against insect pests of the orders Leoidoptera, Diptera, Coleoptera, Hemiptera, Orthoptera, Dictyoptera, Hymenoptera and Isoctera and acarine pests, by treatment with a pesticidal water-miscible formulation whose average particle size is at most 200 nm. Public health pests, including the house fly (Musca domestica), cockroach (Blatta sp. or Periplaneta sp.) and mosquito (Aedes aegyoti) as well as pests which infest or affect timber, particularly in buildings, can also be controlled with such formulations. The formulations include water, oil, a surfactant, and a cosurfactant, wherein either the oil is a pesticide or the formulation comprises a pesticide dissolved in the oil. The pesticide may be a pyrethroid such as cypermethrin or deltamethrin. The formulations can be molecular solutions, micellar solutions or microemulsions (water-in-oil or oil-in-water) and are generally clear.
A method of protecting tropical and temperate crops, other than cabbages and apples, the method comprising a step of treating the crops, or a locus for the crops, with a pesticidal water-miscible formulation having an average particle size of at most 200 nm, wherein said formulation comprises water, a pesticidal oil, a surfactant and a co-surfactant, wherein either the pesticidal oil is a pesticide or the pesticidal oil comprises a pesticide dissolved in oil, the co-surfactant comprising a nonionic surfactant having a hydrophile/lipophile of less than 10.
A method of controlling acarine pests and insect pests of the order Lepidoptera (other than Tortrix larvae and Pieris brassicae), Diptera, Coleoptera, Hemiptera (other than Bravicoryne brassica), Orthoptera, Dictyoptera, Hymenoptera and Isoptera, the method comprising a step of treating the pests, or a locus for the pests, with a pesticidal water-miscible formulation having an average particle size of at most 200 nm, wherein said formulation comprises water, a pesticidal oil, a surfactant and a co-surfactant, wherein either the pesticidal oil is a pesticide or the pesticidal oil comprises a pesticide dissolved in oil, the co-surfactant comprising a nonionic surfactant having a hydrophile/lipophile of less than 10.
A method of controlling public health pests, the method comprising a step of treating the pests, or a locus for the pests, with a pesticidal water-miscible formulation having an average particle size of at most 200 nm, wherein said formulation comprises water, a pesticidal oil, a surfactant and a co-surfactant, wherein either the pesticidal oil is a pesticide or the pesticidal oil comprises a pesticide dissolved in oil, the co-surfactant comprising a nonionic surfactant having a hydrophile/lipophile of less than 10.
Dependencies are inferred from the claim text.