Surfaces upon which insects can not climb or alight and methods and means for their establishment
AssigneeConsep, Inc.
InventorRoger H. Long
Life of this patent
Estimating the term…
Abstract
A coating (17) and a method for its preparation are disclosed which will restrict the movement of insects over a skewed surface (15) to which the coating is applied. The coating (17) is an adherent thin film comprised of particles of less than 5 microns. The dispersions are prepared using a surfactant. The surfactant may be removed, at least in part, from the film by leaching or evaporation. The dispersion may also include a dispersing agent which need not be removed from the film. Stabilizing agents may be added to protect the dispersions from freeze/thaw cycles. The coatings (17) are preferably applied by spraying or roller coating the dispersion over the surface (15).
Claims23
In a method for restricting the movement of insects on a skewed surface comprising the steps of:
- forming a dispersion of finely divided particles having an average size of less than 5 microns with a suspending liquid and a surfactant;
- applying the dispersion to the surface as a wet, continuous, thin coating of substantially uniform thickness;
- and
- evaporating the liquid from the coating to form a continuous film that is free from cracks and discontinuities which film is adhered to the surface the improvement comprising:
- adjusting the viscosity of said dispersion before applying the dispersion, said adjusting comprising adjusting to a viscosity of 30-35 seconds as measured by a #2 Zahn cup by the addition of ethylene glycol monobutyl ether.
Dependencies are inferred from the claim text.