Patent ID: 7338928

Claim:
A system for releasing one or more active ingredients from a composition comprising one or more oil absorbing polymers and a coating comprising one or more water sensitive, surface active polymers; wherein the active ingredients are encapsulated using a combination of (a) incorporating at least one active ingredient comprising fragrances in nano-particles using at least one oil absorbing polymer, wherein the oil absorbing polymer comprises a terpolymer comprising polymerized monomer units of (meth)acrylic acid, C 8 -C 20 alkyl (meth)acrylate, and C 1 -C 24 alkyl (meth)acrylate; and (b) encapsulating the nano-particles using at least one water sensitive, surface active polymer selected from the group consisting of polyvinyl pyrrolidone, water soluble celluloses, polyvinyl alcohol, ethylene maleic anhydride copolymer, methylvinyl ether maleic anhydride copolymer, acrylic acid copolymers, anionic polymers of methacrylic acid and methacrylate, cationic polymers including dimethyl-aminoethyl ammonium functional groups, polyethylene oxides, water soluble polyamides, water soluble polyesters and combinations thereof; and are released upon contact of the coating with water.