| US 7,413,731 B2 | ||
| Fragrance compositions | ||
| Gabor Heltovics, Budapest (Hungary); Jerome Anthony Janszen, Cincinnati, Ohio (US); Jill Maureen Mattila, Greensboro, N.C. (US); Lynette Anne Makins Holland, Watford (United Kingdom); and Jane Margaret Warwick, Willerby (United Kingdom) | ||
| Assigned to The Procter and Gamble Company, Cincinnati, Ohio (US) | ||
| Filed on Apr. 24, 2003, as Appl. No. 10/422,880. | ||
| Application 10/422880 is a continuation of application No. PCT/US00/30373, filed on Nov. 03, 2000. | ||
| Claims priority of application No. PCT/US00/29765 (WO), filed on Oct. 27, 2000. | ||
| Prior Publication US 2007/0037732 A1, Feb. 15, 2007 | ||
| Int. Cl. A61L 9/04 (2006.01) | ||
| U.S. Cl. 424—76.4 [512/1; 510/101] | 15 Claims |
| 14. A method for fragrancing a substrate, the method comprising the step of applying a composition to the substrate, the composition
comprising:
(a) a fragrance oil wherein the fragrance oil comprises:
(i) greater than about 40% to about 50%, by weight of the fragrance oil, of perfume raw materials with high odour impact perfume
raw materials which have an odour detection threshold of less than, or equal to, about 50 parts per billion;
(ii) less than about 4%, by weight of the fragrance oil, of top note perfume raw materials where in the top note perfume raw
materials have a boiling point of less than 250° C. at 1 atmosphere pressure;
(b) an entrapment material which is not pre-associated with the fragrance oil prior to inclusion into the composition and
which is selected from the group consisting of polymers, capsules, microcapsules and nanocapsules, liposomes, pro-perfumes,
film formers, absorbents, cyclic oligosaccharides and mixtures thereof; and
(c) greater than about 50%, by weight, of a volatile solvent; whereupon after application to the substrate, at least some of the fragrance oil and the entrapment material form a reversible
physical or chemical association.
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