Extended delivery of ingredients from a fabric softener composition
A controlled delivery system for active ingredients, like a fragrance, for use in fabric softener products, such as tumble dryer sheets, rinse added liquids, and similar products, is disclosed. The delivery system enhances performance of an active ingredient, such as a fragrance. The controlled delivery system contains polymeric micro-particles highly loaded with the active ingredient. Other active ingredients that can be incorporated into a fabric softener composition using the delivery system include ironing aides, silicone fluids, antiwrinkle agents, antistatic agents, optical brighteners, fabric crisping agents, bleaching agents, germicides, fungicides, flow agents, and surfactants.
1. A fabric softener composition comprising a cationic fabric softener and a fragrance delivery system comprising (a) a fragrance loaded onto polymeric microparticles comprising a copolymer of ethylene glycol dimethacrylate and lauryl methacrylate and (b) a barrier layer.
2. The fabric softener composition of claim 1 wherein the fragrance delivery system comprises about 10% to 90%, by weight, of the fragrance.
3. The fabric softener composition of claim 1 wherein the fragrance delivery system comprises about 35% to 85%, by weight, of the fragrance.
4. The fabric softener composition of claim 1 wherein the fragrance delivery system comprises about 50% to 80%, by weight, of the fragrance.
5. The fabric softener composition of claim 1 wherein the fragrance is present in the composition in an amount of about 0.05% to about 8%, by weight.
6. The fabric softener composition of claim 1 wherein the fragrance is present in the composition in an amount of about 0.1% to about 5%, by weight.
7. The fabric softener composition of claim 1 wherein the barrier layer is present in an amount of about 1% to about 50%, by weight of the fragrance delivery system.
8. The fabric softener composition of claim 7 wherein the barrier layer is present in an amount of about 5% to about 45%, by weight of the fragrance delivery system.
9. The fabric softener composition of claim 8 wherein the barrier layer is present in an amount of about 15% to about 40%, by weight of the fragrance delivery system.
10. The fabric softener composition of claim 1 wherein the composition is a liquid.
11. The fabric softener composition of claim 1 wherein the composition is incorporated into a sheet material.
12. A method of imparting a fragrance to a fabric comprising
(a) providing a fabric wetted with water;
(b) contacting a composition of claim 1 with the wetted fabric of step (a); and
(c) drying the fabric resulting from step (b).
13. The method of claim 12 wherein the composition of claim 1 is a liquid.
14. The method of claim 12 wherein the composition of claim 1 is incorporated into a sheet material prior to contacting the wetted fabric.
15. The method of claim 12 wherein the dried fabric of step (c) has a perceptible fragrance attributable to a composition of claim 1 twenty days after contacting the wetted fabric with the composition of claim 1 .
16. A fabric softener composition comprising a cationic fabric softener and a fragrance delivery system comprising a fragrance loaded onto polymeric microparticles comprising a copolymer of ethylene glycol dimethacrylate and lauryl methacrylate, wherein the composition is incorporated into a sheet material.
17. The fabric softener composition of claim 16 wherein the fragrance delivery system comprises about 10% to 90%, by weight, of the fragrance.
18. The fabric softener composition of claim 16 wherein the fragrance is present in the composition in an amount of about 0.05% to about 8%, by weight.
19. The fabric softener composition of claim 16 wherein the fragrance delivery system further comprises a barrier layer.
20. The fabric softener composition of claim 19 wherein the barrier layer is present in an amount of about 1% to about 50%, by weight of the fragrance delivery system.
21. A method of imparting a fragrance to a fabric comprising
(a) providing a fabric wetted with water;
(b) contacting a sheet material of claim 16 with the wetted fabric of step (a); and
(c) drying the fabric resulting from step (b).
22. The method of claim 21 wherein the dried fabric of step (c) has a perceptible fragrance attributable to a composition of claim 16 twenty days after contacting the wetted fabric with the sheet material of claim 16 .