Fragrance compositions

Abstract

A composition comprising: (a) a fragrance oil comprising: (i) top note perfume raw material, or mixture of perfume raw materials, with a boiling point of less than, or equal to, about 250° C. at 1 atmosphere pressure; (ii) middle or base note perfume raw material, or mixture of perfume raw materials, with a boiling point of greater than 250° C. at 1 atmosphere pressure; (b) an entrapment material which is selected from the group consisting of polymers; capsules, microcapsules and nanocapsules; liposomes; pro-perfumes selected from more than 1 type of pro-chemistry; film formers; absorbents; cyclic oligosaccharides and mixtures thereof; (c) greater than 50% volatile solvent; wherein the weight ratio of the top note perfume raw materials to middle or base note perfume raw materials within the fragrance oil is in the range from about 1:20 to about 20:1. The present invention provides compositions wherein the light, fresh, fruity, citrus, green or delicate floral top note 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.

1 . A method of treating laundry comprising the step of using an article, wherein the article comprises: 
 (a) a substrate and;    (b) a laundry composition comprising:    (i) a capsule, microcapsule, or nanocapsule; and    (ii) a fragrance oil;    wherein the capsule, microcapsule, or nanocapsule encapsulates a fragrance oil; and    wherein the capsule, microcapsule, or nanocapsule is ruptured mechanically before the fragrance oil is released.    
   
   
       2 . The method of  claim 1 , wherein the encapsulated fragrance oil is physically associated with the capsule, microcapsule, or nanocapsule.  
   
   
       3 . The method of  claim 2 , wherein the encapsulated fragrance oil forms a reversible association with the capsule, microcapsule, or nanocapsule  
   
   
       4 . The method of  claim 2 , wherein the capsule, microcapsule, or nanocapsule is water insensitive.  
   
   
       5 . The method of  claim 4 , wherein the fragrance oil comprises perfume raw materials, and wherein the 5% to about 60% of the perfume raw material, by weight of the fragrance oil, comprise a boiling point of less than or equal to about 250° C.  
   
   
       6 . The method of  claim 5 , wherein the boiling point is measured at 1 atmosphere.  
   
   
       7 . The method of  claim 4 , wherein from about 20% to about 40% of the raw perfume ingredients comprise an odour detection threshold of less than or equal to 50 parts per billion.  
   
   
       8 . The method of  claim 7 , wherein the odour detection threshold is less than or equal to 10 parts per billion.  
   
   
       9 . The method of  claim 6 , wherein from about 20% to about 40% of the raw perfume ingredients comprise an odour detection threshold of less than or equal to 50 parts per billion.  
   
   
       10 . The method of  claim 9 , wherein the encapsulate fragrance oil is encapsulated by the microcapsule.  
   
   
       11 . The method of  claim 10 , wherein the laundry composition comprises from about 0.1% to about 5% water.  
   
   
       12 . The method of  claim 10 , wherein the laundry composition is substantially free of water.  
   
   
       13 . The method of  claim 4 , wherein the laundry composition comprises from about 0.1% to about 5% water.  
   
   
       14 . The method of  claim 4 , wherein the laundry composition is substantially free of water.