Surface modification of microcapsules
AssigneeGivaudan SA
InventorsPauline Sallet, Etienne Fleury, Aurelia Charlot, Julien Bernard
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Abstract
A method of providing a modifier on the surface of an active-containing core-shell aminoplast microcapsule, including the covalent attachment of the modifier to the capsule shell surface by means of a coupling compound capable of covalent bonding to both shell and modifier by means of epoxy groups on the coupling compound. The method is especially useful for enhancing the substantiveness to fabrics of fragrance microcapsules added to laundry products.
Claims18
A method of providing a modifier on the surface of an active-containing core-shell aminoplast microcapsule, comprising the covalent attachment of the modifier to the capsule shell surface by means of a coupling compound capable of covalent bonding to both shell and modifier by means of epoxy groups on the coupling compound, wherein the modifier comprises at least one polysaccharide, at least one enzyme, or combinations thereof;
- and wherein the coupling compound contains at least two epoxides or compounds that allow the formation of such compounds in situ.
A modified core-shell aminoplast microcapsule containing an active core and comprising on the shell surface a modifier, the modifier being covalently bonded to the shell by means of a coupling compound that is covalently bonded to both shell and modifier by means of epoxy groups on the coupling compound, wherein the modifier comprises at least one polysaccharide, at least one enzyme, or combinations thereof;
- and wherein the coupling compound contains at least two epoxides or compounds that allow the formation of such compounds in situ.
Dependencies are inferred from the claim text.