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US 2026/0201285 A1Published application
Microcapsules
AssigneeGivaudan SA
InventorsVladica Bocokic, Marion DENIGOT, Ian Michael HARRISON
Life of this patent
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Abstract
A core-shell microcapsule comprising a) an inner shell encapsulating a benefit agent; and b) an outer shell of crosslinked polysaccharide; crosslinking being effected by means of at least one oligofunctional (meth)acrylate compound. The resulting core-shell microcapsules have a reduced content of material derived from non-renewable sources.
Claims8
A core-shell microcapsule comprising
- a) an inner shell encapsulating a benefit agent;
- and
- b) an outer shell of crosslinked polysaccharide;
- crosslinking being effected by means of at least one oligofunctional (meth)acrylate compound.
1 more element
A method for preparing an encapsulated composition, in particular an encapsulated composition as described herein above. This method comprises the steps of:
- (a) Providing a polymeric surfactant;
- (b) Providing an aqueous phase;
- (c) Dissolving or dispersing the polymeric surfactant in the aqueous phase;
- (d) Providing at least one aminosilane;
- (e) Providing an oil phase comprising at least one benefit agent;
- (f) Optionally:
- Dissolving the at least one aminosilane in the oil phase;
- (g) Emulsifying the oil phase and the aqueous phase in presence of both of the polymeric surfactant and the aminosilane to form an emulsion of oil droplets in the aqueous phase;
- (h) Causing the at least one aminosilane and the polymeric surfactant to form a shell at the oil-water interface of the emulsified oil droplets, thereby forming a slurry of microcapsules;
- (i) Adding a polysaccharide, preferably a polysaccharide comprising beta (1→4) linked monosaccharide units, even more preferably a cellulose derivative, in particular selected form the group consisting of hydroxyethyl cellulose, hydroxpropylmethyl cellulose, cellulose acetate and carboxymethyl cellulose, preferably hydroxyethyl cellulose, to the microcapsule slurry formed in step h).
- (j) Cross-linking the polysaccharide with an oligo-acrylate/methacrylate
8 more elements
Dependencies are inferred from the claim text.