Pesticidal compositions comprising solutions of polyurea and/or polyurethane
AssigneeHampshire Chemical Corp.
InventorsBrian A. Parker, Longin V. Holejko, Barry A. Cullen, Jonathan D. Davis
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Abstract
A pesticidal composition including isocyanate capped high molecular weight diols, triols and polyols. A pesticide and water are combined with hydrophilic isocyanate end-capped prepolymers in order to significantly improve the efficacy of the pesticide. The liquid pesticidal compositions of the present invention can be prepared by simply mixing the various constituents. The order of addition can be used effectively to cap free isocyanate groups in the hydrophilic prepolymer.
Claims17
A pesticidal composition, comprising an aqueous solution of a pesticidally effective amount of a pesticide;
- and a subgelation amount of a hydratable gel-forming hydrophilic polyurethane or polyurea-urethane polymer.
A delivery system for delivering a pesticidal composition to a substrate, said delivery system comprising an aqueous solution of a subgelation amount of a hydratable gel-forming hydrophilic polymer selected from the group consisting of polyurea-urethane, and polyurethane, and a pesticidally effective amount of a pesticide;
- and means for delivering said solution to said substrate.
A method of formulating a pesticidal composition, comprising forming a reaction product of a hydrophilic polymer formed from a prepolymer selected from the group consisting of polyurea-urethane, polyurea and polyurethane and an activating surfactant;
- and adding to said reaction product a pesticidally effective amount of a pesticide.
A method of controlling pests, comprising administering to said pests or the locus thereof an effective amount of a composition comprising an aqueous solution of a pesticidally effective amount of a pesticide and a subgelation amount of a hydratable gel-forming hydrophilic polyurethane or polyurea-urethane polymer.
A pesticidal composition comprising an elastic film formed upon the evaporation of water from an aqueous solution of a pesticidally effective amount of a pesticide and a subgelation amount of a hydratable gel-forming hydrophilic polyurethane or polyurea-urethane polymer.
Dependencies are inferred from the claim text.