Nicholas T O'Leary

US Patent:

20090202446, Aug 13, 2009

Filed:

Apr 19, 2007

Appl. No.:

12/299098

Inventors:

Florin Joseph Vlad - Annandale NJ, US
Nicholas O'Leary - Pennington NJ, US

International Classification:

A61K 9/12

US Classification:

424 45

Abstract:

The present invention relates to air freshener devices of water-based liquid compositions, preferably clear liquids, that provide an improved diffusion of the composition and allow the use of fragrance materials with a wide range of characteristics, namely a wide range of clogP values. The compositions are clear microemulsions particularly adapted for use in automatic air fresheners and comprise at least 40% w/w of an aqueous phase, preferably water, an active oil in an amount of between 0.01 and 5% w/w, an oil-solubilizing system which is formed of a surfactant mixture of ionic and non-ionic surfactants, a solubilizing-aid ingredient in an amount of up to 5% w/w, and a propellant system in an amount of up to 40% w/w, wherein the perfume oil to total surfactant mixture is present at a weight ratio of between 0.2 and 4.5.