Ectoparasiticidal pour-on formulation
AssigneeShell Internationale Research Maatschappij B.V.
InventorAlan R. Garden
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Abstract
The invention provides a pour-on formulation comprising a pyrethroid insecticide at a concentration of 7.5 to 75 kg/m.sup.3, a C.sub.6-15 alkanol diester of adipic or phthalic acid at a concentration of 150 to 800 kg/m.sup.3, a spreading agent at a concentration of 25 to 300 kg/m.sup.3, other additives at a concentration of 0 to 55 kg/m.sup.3, the balance being at least 67.5 kg/m.sup.3 of a veterinarily-acceptable mineral or vegetable oil having a kinematic viscosity at 40.degree. C. not greater than 35.times.10.sup.-6 m.sup.2 /s (35 cSt); a process for the preparation of the formulation; and its application onto a localized region of the skin or coat of an animal for combating ectoparasites.
Claims12
A pour-on formulation comprising at a concentration of 7.5 to 75 kg/m.sup.3, a pyrethroid insecticide, which has the formula ##STR4## wherein R.sup.1 represents a hydrogen atom or a cyano group, R.sup.2 is a hydrogen or fluorine atom and Q is a group of formula ##STR5## wherein R.sup.3 is a chlorine atom or a difluoromethoxy group, or Q is a group of formula ##STR6## wherein R.sup.4 and R.sup.5 together represent a single chemical bond or each represents a bromine atom and R.sup.6 and R.sup.7 are independently selected from fluorine, chlorine and bromine atoms, and methyl, trifluoromethyl and 4-chlorophenyl groups;
- a C.sub.6-15 alkanol diester of adipic or phthalic acid at a concentration of 150 to 800 kg/m.sup.3 ;
- a spreading agent selected from the group consisting of a polyoxyethylene polyol fatty acid ester and a silicone oil at a concentration of 25 to 300 kg/m.sup.3 ;
- other additives at a concentration of 0 to 55 kg/m.sup.3, the balance being at least 67.5 kg/m.sup.3 of a verterinarily-acceptable mineral or vegetable oil having a kinematic viscosity at 40.degree. C. not greater than 35.times.10.sup.-6 m.sup.2 /s (35 cSt).
Dependencies are inferred from the claim text.