| 摘要 |
<p>The present invention relates to a composition comprising: a fragrance oil wherein the fragrance oil comprises: one or more perfume raw materials with a high odour impact which have an odour detection threshold of less than, or equal to about 50 parts per billion; less than about 5 %, 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 150 °C at 1 atmosphere pressure; an entrapment material which is selected from the group consisting of polymers; capsules, microcapsules, and nanocapsules; liposomes; film formers; absorbents; cyclic oligosaccharides and mixtures thereof; wherein the perfume raw material and the entrapment material exist in an associated form on the substrate and wherein the weight ratio of high odour impact perfume raw materials which have an odour detection threshold of less than, or equal to, about 50 parts per billion to entrapment material within the associated form falls in the range of about 1:20 to about 20:1. The present invention provides compositions wherein the fragrance character remains detectable for greater than about 2 hours, preferably greater than about 4 hours, more preferably greater than about 6 hours, after the composition has been applied to the substrate.</p> |
