Organic Compounds

Abstract

Disclosed is a composition comprising at least one core-shell microcapsule in a suspending medium. The microcapsule comprises a core and a shell around said core. The shell comprises a hyperbranched polysaccharide selected from the group consisting of amylopectins, dextrins, hyperbranched starches, glycogen and phytoglycogen and mixtures thereof.

1 . A composition comprising at least one core-shell microcapsule in a suspending medium for deposition on a keratinous substrate, wherein said microcapsule comprises a core and a shell around said core, wherein said shell comprises a hyperbranched polysaccharide selected from the group consisting of amylopectins, dextrins, hyperbranched starches, glycogen, phytoglycogen and mixtures thereof, and wherein the hyperbranched polymer is attached onto the microcapsule shell. 
     
     
         2 . The composition according to  claim 1 , wherein the ratio of 1,6′-glyosidic bonds to 1,4′-gylcosidic bonds in said hyperbranched polysaccharide is greater than 1/50. 
     
     
         3 . (canceled) 
     
     
         4 . The composition according to  claim 1 , wherein the amount of hyperbranched polymer is from 0.01 to 1 wt %, referred to the total weight of the microcapsule suspension. 
     
     
         5 . The composition according to  claim 1 , wherein said core comprises an ingredient selected from the group consisting of a fragrance ingredient, a cosmetic ingredient and a mixture thereof. 
     
     
         6 . The composition according to  claim 1 , wherein said shell of said at least one core-shell microcapsule comprises a thermosetting resin. 
     
     
         7 . A method of attaching hyperbranched polymers into or onto microcapsule shells, said method comprising the steps of:
 dispersing droplets of a core material in a suspending medium in the presence of a shell-precursor selected from the group consisting of shell-forming monomers, pre-polymers and pre-condensates, to obtain an emulsion;   causing said shell-forming monomers, pre-polymers or pre-condensates to react at the interface of the droplets and the suspending medium obtain a slurry of core-shell microcapsules;   adding a hyperbranched polymer;   obtaining a composition comprising a slurry of core-shell microcapsules, wherein said hyperbranched polymer is attached onto the shells of said core-shell microcapsules.   
     
     
         8 . A microcapsule formed by the method of  claim 7 . 
     
     
         9 . A method of enhancing deposition of at least one core-shell microcapsule on a surface, the method comprising the step of:
 attaching a hyperbranched polymer onto the shell of said core-shell microcapsule.   
     
     
         10 . A method for increasing the rinse-resistance of at least one core-shell microcapsule deposited on a surface, the method comprising the step of attaching a hyperbranched polymer onto the shell of the core-shell microcapsule. 
     
     
         11 . (canceled) 
     
     
         12 . (canceled) 
     
     
         13 . A consumer product comprising a composition according to  claim 1 . 
     
     
         14 . The consumer product according to  claim 13 , wherein said consumer product is selected from the group consisting of a shampoo, a hair care conditioner, a shower gel and a liquid soap. 
     
     
         15 . The composition according to  claim 2 , wherein the ratio of 1,6′-glyosidic bonds to 1,4′-gylcosidic bonds in said hyperbranched polysaccharide is greater than 1/40. 
     
     
         16 . The composition according to  claim 15 , wherein the ratio of 1,6′-glyosidic bonds to 1,4′-gylcosidic bonds in said hyperbranched polysaccharide is greater than 1/35. 
     
     
         17 . The composition according to  claim 4 , wherein the amount of hyperbranched polymer is from 0.02 to 0.5 wt %, referred to the total weight of the microcapsule suspension. 
     
     
         18 . The composition according to  claim 17 , wherein the amount of hyperbranched polymer is from 0.05 to 0.25 wt %, referred to the total weight of the microcapsule suspension. 
     
     
         19 . The composition according to  claim 6 , wherein the shell of said at least one core-shell microcapsule comprises a thermosetting resin selected from the group consisting of aminoplast resins, polyurea resins, polyacrylic resins and mixtures thereof. 
     
     
         20 . The method according to  claim 7 , additionally comprising the step of adding to said slurry one or more of a suspending agent or a preservative. 
     
     
         21 . The method according to  claim 7 , additionally comprising the step of dehydrating said slurry to form a composition of core-shell microcapsules in powder form.