Fragrance delivery system
View Patent ↗A micro-emulsified fragrance composition provides an effective fragrance delivery system when present in a laundry composition, e.g. a laundry fabric softener formulation, or when delivered from a substrate. This composition can deposit a substantial amount of fragrance material onto the surface intended for deposition during the wash, rinse, dry, or post-dry cycles.
1. A fragrance delivery system comprising, by weight,
(a) 5-20% of an active fragrance,
(b) 80-95% of a microemulsion concentrate including:
(i) 40-70% of a non-ionic surfactant,
(ii) 0.05-29% of a N—C 8 -C 18 alkyl pyrrolidone,
(iii) 0.15-40% a N—C 1 -C 4 alkyl pyrrolidone,
(iv) 0.5-15% of an ethylene oxide/propylene oxide block copolymer, and
(v) 0.005-6% of an ethoxylated phosphoric acid ester.
2. A fragrance delivery system according to claim 1 wherein (b) has a particle size of <0.1μ.
3. A fragrance delivery system according to claim 2 wherein (b) has a particle size of about 0.05μ.
4. A laundry composition which includes the fragrance delivery system of claim 2 .
5. A fragrance delivery system according to claim 1 wherein said fragrance is a liquid.
6. A laundry composition according to claim 5 which is a laundry detergent composition.
7. A fragrance delivery system according to claim 1 wherein (b) (i) is castor oil ethoxylate or tristryl phenol ethoxylate, (b) (ii) is octyl pyrrolidone and (b) (iii) is methylpyrrolidone.
8. A laundry composition which includes the fragrance delivery system of claim 1 .
9. A laundry composition which is a non-ionic, anionic, cationic or neutral formulation.
10. A laundry washing composition including the fragrance delivery system of claim 1 , which is an anionic formulation.
11. A fabric softener composition including the fragrance delivery system of claim 1 , which is a cationic formulation.
12. A laundry fabric softener which includes the fragrance delivery system of claim 1 .
13. A laundry composition which includes, by weight, 0.1-10% of the fragrance delivery system of claim 1 .
14. An article comprising the fragrance delivery system of claim 1 on or in a substrate.
15. An article of claim 14 wherein said substrate is a fabric.
16. A method of delivering a fragrance to a textile, fabric or clothes which comprises applying the fragrance delivery system of claim 1 thereto in the wash, rinse, dry, or post-dry cycle.