Method of controlling harmful arthropod, composition, and electrostatic spray device

摘要

A method of the present invention, for controlling a harmful arthropod employs an ester compound which has a specific structure. Accordingly, with the method of the present invention, it is possible to control a wide variety of harmful arthropods effectively, without carrying out any heating process (e.g., a smoking process) for spraying the composition or any pressure process (e.g., a gas-pressure process or a mechanical pressure process) for spraying the compositions.

主权项

1. An electrostatic spray device comprising:
a storage reservoir for storing a composition; a spray electrode to which the composition is supplied from the storage reservoir; and a discharge electrode provided in the vicinity of the spray electrode, the composition being electrostatically sprayed from the spray electrode by application of a voltage across the spray electrode and the discharge electrode, the composition comprising at least one of ester compounds represented by the following formulas (1) through (5), respectively: wherein the composition has (i) an electric resistance of not less than 1×103 Ωm but not more than 1×106 Ωm at a temperature of 20° C., (ii) a viscosity of not less than 1 mPa·s but not more than 10 mPa·s at a temperature of 20° C., and (iii) a surface tension of not less than 20 mN/m but not more than 40 mN/m at a temperature of 20° C.; the composition further containing a dispersion medium for dispersing the at least one of ester compounds, and having a vapor pressure of less than 14 Pa at a temperature of 20° C.; the dispersion medium containing (i) a low-vapor pressure component containing dipropylene glycol-n-propyl ether, (ii) a resistivity adjustment component, and (iii) a surface tension adjustment component.