Long-lasting fragrance delivery system
View Patent ↗Long-lasting fragrance delivery systems and uses of the systems to provide fragrance-emitting articles with a long-lasting fragrance are disclosed herein. The long-lasting fragrance delivery systems include an emulsion of silicone-based polyurethane, fragrance, and a carrier.
1. A fragrance delivery system comprising an emulsion comprising a silicone-based polyurethane having a polymeric backbone comprising at least one lipophilic moiety and at least one hydrophilic moiety, a fragrance, and a carrier, wherein the silicone-based polyurethane and fragrance are present in a weight ratio of silicone-based polyurethane:fragrance of from about 1:3 to about 3:1.
2. The fragrance delivery system of claim 1 , wherein the polymeric backbone comprises at least one dimethicone polyether.
3. The fragrance delivery system of claim 2 , wherein the polymeric backbone comprises a bis-(polyethylene glycol) x dimethicone, wherein x ranges from 8 to 20.
4. The fragrance delivery system of claim 2 , wherein the polymeric backbone comprises a bis-(polyethylene glycol) x dimethicone, wherein x ranges from 12 to 16.
5. The fragrance delivery system of claim 3 , wherein the polymeric backbone comprises isophorone diisocyanate.
6. The fragrance delivery system of claim 1 , wherein at least a portion of the emulsion is encapsulated.
7. The fragrance delivery system of claim 1 , wherein the weight ratio of silicone-based polyurethane:fragrance is from about 1:2 to about 2:1.