Coated perfume particles in fabric softener or antistatic agents
AssigneesThe Procter & Gamble Company, Minnesota Mining and Manufacturing Company
InventorsDiane G. Schmidt, Howard J. Buttery, Robert J. Norbury
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Abstract
Perfume particles comprise perfume dispersed within certain water-insoluble polymeric carrier materials and encapsulated in a protective shell by coating with a friable coating material. The coated particles allow for preservation and protection of perfumes which are susceptible to degradation or loss in storage and in harsh cleaning conditions. In use, the surface coating fractures and the underlying carrier/perfume particles efficiently deliver a large variety of perfume types to fabrics or other surfaces.
Claims5
A fabric softener composition comprising one or more fabric- or fiber-softening or antistatic agents, and perfume particles which comprise from about 5% to about 70% of a perfume dispersed in from about 30% to about 95% of a solid core comprising water-insoluble polymeric carrier material selected from the group consisting of polyethylene, polyamides, polystyrene, polyisoprenes, polycarbonates, polyesters, polyacrylates, vinyl polymers, polyurethanes and mixtures thereof, said solid core polymeric carrier material having a molecular weight of from about 100 to about 30,000, a melting point of from about 37.degree. C. to about 190.degree. C., and hardness value of from about 0.1 to 15, said particles being encapsulated by having a friable coating on their outer surfaces, wherein said friable coating is the reaction product of an amine selected from the group consisting of urea and melamine, and mixtures thereof, and the aldehyde is selected from the group consisting of formaldehyde, acetaldehyde, glutaraldehyde and mixtures thereof, said coated particles having an average size less than about 350 microns.
Dependencies are inferred from the claim text.