Self-adhesive fragranced gels

Abstract

The invention concerns self-adhering, water-resistant gel compositions capable of bringing a benefit or effect into their surrounding environment by diffusing an active volatile substance. The compositions are effective volatile releasing systems in both dry and wet environments and are capable of adhering to a surface to which they are applied. They can be used in a variety of applications, as self-contained fragrance gels or in consumer products.

1 . A self adhering, water resistant gel composition comprising:
 between 30 and 95% by weight, relative to the weight of gel composition, of an active volatile ingredient or mixture of ingredients;   silica; and   a water-soluble cationic polysaccharide.   
     
     
         2 . A self adhering, water resistant gel composition according to  claim 1 , further comprising:
 a mineral filler;   a solvent;   water; and/or   a preservative, an antioxidant and/or an end point indicator.   
     
     
         3 . A composition according to  claim 1 , characterized in that it does not comprise any surfactant. 
     
     
         4 . A composition according to any one of  claims 1  to  3 , characterized in that it consists essentially of:
 between 30 and 95% of an active volatile ingredient or mixture of ingredients; 
 silica; and 
 a water-soluble cationic polysaccharide; 
 
       and optionally
 a mineral filler; 
 a solvent; 
 water; and 
 a preservative, an antioxidant and/or an end point indicator. 
 
     
     
         5 . A composition according to  claim 4 , characterized in that it consists essentially of:
 between 30 and 95% of an active volatile ingredient or mixture of ingredients;   silica; and   a water-soluble cationic polysaccharide.   
     
     
         5 . A composition according to any one of  claims 1  to  5 , characterized in that the volatile ingredient or mixture of ingredients is a perfume and/or a malodor counteractant. 
     
     
         7 . A composition according to any one of  claims 1  to  6 , characterized in that it comprises:
 from 1 to 15% of silica; 
 from 0.1 to 6% of cationic water-soluble polysaccharide; 
 from 0 to 20% of mineral filler; 
 from 0 to 95% of solvent; 
 from 0 to 50% of water; and 
 from 0 to 5% of a preservative, an antioxidant and/or an end point indicator. 
 
     
     
         8 . A composition according to any one of  claims 1  to  7 , characterized in that it comprises from 60 to 95% of active volatile ingredient or mixture of ingredients. 
     
     
         9 . A composition according to any one of  claims 1  to  8 , characterized in that the composition comprises water. 
     
     
         10 . A composition according to any one of  claims 1  to  9 , characterized in that the water-soluble cationic polysaccharide is a modified guar gum, preferably a hydroxylated guar gum. 
     
     
         11 . A composition according to  claim 10 , characterized in that the modified gum is 2-hydroxypropyl-3-(trimethylammoniumchloride) guar-gum ether. 
     
     
         12 . An air freshener comprising a composition according to any one of  claims 1  to  11 , together with packaging materials. 
     
     
         13 . A method for dispensing an active volatile in the environment surrounding a surface, which comprises applying a composition according to any one of  claims 1  to  11  on such surface, without the use of adhesive, support or carrying means. 
     
     
         14 . A method for dispensing an active volatile according to  claim 13 , characterized in that the surface is repeatedly exposed to humidity or to a water flow. 
     
     
         15 . A process for preparing a self adhering, water resistant gel composition comprising between 30 and 95% by weight of a volatile ingredient or mixture of ingredients, comprising the following steps, which are all carried out at room temperature:
 a) mixing the volatile ingredient or mixture of ingredients, optionally pre-mixed with a solvent and/or water, with a water-soluble cationic polysaccharide;   b) optionally adding a mineral filler, a preservative, an antioxidant and/or an end point indicator to the mixture obtained in step a);   c) adding silica to the mixture obtained in step a) or b) under continuous stirring; and   d) stirring until complete dispersion of the silica and formation of the self-adhering, water resistant gel composition.