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These polyurea microcapsule compositions include a first microcapsule and a second microcapsule.
May 7, 2025
By: TOM BRANNA
US 12,274,771 B2. Yabin Lei, Union Beach, NJ; Lewis Michael Popplewell, Union Beach, NJ; Li Xu, Union Beach, NJ; John Brahms, Union Beach, NJ and Xiang Fei, Union Beach, NJ. Assignee: International Flavors & Fragrances, New York, NY.
These polyurea microcapsule compositions include a first microcapsule and a second microcapsule, wherein the:
• first microcapsule has a zeta potential of 10 mV or greater;
• second microcapsule has a zeta potential of −10 mV or less;
• first microcapsule has a first oil core containing a first active material, and a first microcapsule wall encapsulating the first oil core;
• second microcapsule has a second oil core containing a second active material, and a second microcapsule wall encapsulating the second oil core and
• first microcapsule wall or the second microcapsule wall comprises a polyfunctional amine selected from the group consisting of a protein and chitosan.
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