Hydroxyethyl cellulose microcapsules
AssigneeInternational Flavors & Fragrances Inc.
InventorsYi Zhang, Yabin Lei, Li Xu, Ronald Gabbard, Lewis Michael Popplewell, Julie Ann Wieland, Takashi Sasaki
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Abstract
Disclosed are microcapsules each having a microcapsule core and a microcapsule wall encapsulating the microcapsule core. The microcapsule core contains an active material and the microcapsule wall contains hydroxyethyl cellulose moieties. Also disclosed are preparation method and consumer products containing the microcapsules.
Claims16
A microcapsule composition comprising microcapsules that contain a microcapsule core and a microcapsule wall encapsulating the microcapsule core, wherein the microcapsule core contains an active material and the microcapsule wall contains by weight 35% to 90% of a hydroxyethyl cellulose, 2% to 30% of a polyisocyanate, 1% to 50% of a polyphenol, and 0.5% to 20% of a multi-functional aldehyde, provided that the total amount of the hydroxyethyl cellulose, polyisocyanate, polyphenol, and multi-functional aldehyde is equal to or less than 100%, and wherein the hydroxyethyl cellulose and the polyisocyanate reacts to form polyurethane bond, the hydroxyethyl cellulose reacts with the multi-functional aldehyde to form an acetal or hemi-acetal product, and the polyphenol reacts with the polyisocyanate to form a polyurethane polymer.
Dependencies are inferred from the claim text.