Patent ID: 7135169

Claim:
An aqueous scenting composition formulated for spray application on an air scenting device for use in an HVAC system to form an air permeable barrier film which slows the rate of water evaporation and provides long lasting freshening or scenting of air flowing through the device with minimal blockage of air flow through the device consisting essentially of: (a) a latex polymer emulsion selected from the group consisting of styrene butadiene copolymers, acrylic polymers, acrylic urethane hybrid copolymers, styrene acrylic copolymers and mixtures thereof in an amount of between about 10% and about 50% by weight of the composition with the mean particle size of the polymers/copolymers in the emulsion being between about 75 and about 90 microns in diameter; (b) a surfactant selected from the group consisting of non-ionic and anionic surfactants and mixtures thereof; (c) a fragrance material in an amount of between about 20% and about 40% by weight of the composition; and wherein the polymer emulsion includes a solids content of latex polymer and fragrance material greater than about 50% by weight of the composition.