Ectoparasiticide-containing polyurethanes
AssigneeBayer Aktiengesellschaft
InventorsMiklos von Bittera, Hubert Dorn, Dietmar Schapel, Wilhelm Stendal, Herbert Voege, Manfred Federman, Ulrich von Gizyoki
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Abstract
The invention relates to ectoparasiticide-containing polyurethanes which contain spreading agents and ectoparasiticides or mixtures of ectoparasiticides and to said ectoparasiticide-containing polyurethanes in the form of sheets, films, shaped articles, coatings or impregnations. Also included in the invention is the use of said polyurethane compositions for combating ectoparasiticides.
Claims17
An ectoparasiticide-containing polyurethane, comprising a hydrophobic polyurethane which cannot be swollen in water and which contains, relative to the polyurethane, 2 to 30% by weight of an ectoparasiticide, said ectoparasiticide selected from the group consisting of an insecticidally active carbamate having a vapor pressure of between about 10.sup.-4 and 10.sup.-6 mm Hg measured at 20.degree. C., and an insecticidally active synthetic pyrethroid, and combinations thereof and, relative to the polyurethane, 8 to 25% by weight of a spreading agent, said speading agent selected from the group consisting of silicone oils, fatty acid esters, fatty alcohols, fatty acids and combinations thereof.
An ectoparasiticide-containing polyurethane according to claim 9, wherein said fatty acid ester of saturated fatty acids of the chain length C.sub.8 -C.sub.18 and linear or branched alcohols of the chain length C.sub.2 -C.sub.8 are selected from the group consisting of lauric acid hexyl ester, ethyl stearate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, dipropylene glycol pelargonate and butyl stearate.
Dependencies are inferred from the claim text.