International Flavors & Fragrances Inc.

Li Xu

Yabin Lei

Lewis Michael Popplewell

John C Brahms

Carol Joyce

Ronald Gabbard

Julie Ann Wieland

Xiang Fei

Takashi Sasaki

Feng Geng

Xiao Huang

Elizabeth Geertruida Maria Brundel

Volkert De Villeneuve

Laura French

Djurre Sijbren Postma

Xihua Lu

Yi Zhang

Joan G L Pluter

Clémentine Marteau-Roussy

Julie Ann Wireland

Polyurea capsule compositions. A subset of these compositions contain a plurality of capsules and a capsule formation aid, in which each of the capsules contains a polyurea wall and an oil core; the polyurea wall is formed of a reaction product of a polyisocyanate and a cross-linking agent in the presence of the capsule formation aid; and the oil core contains an active material. The polyisocyante, cross-linking agent, and capsule formation aids are described herein. Also disclosed are methods of preparing polyurea capsule compositions, as well as consumer products containing one of these compositions.

Polyurea or polyurethane capsules

Disclosed is a microcapsule containing: (i) a microcapsule core having an active material, and (ii) a microcapsule wall formed of a first polymer and second polymer. The first polymer is a sol-gel polymer. The second polymer is gum arabic, purity gum ultra, gelatin, chitosan, xanthan gum, plant gum, carboxymethyl cellulose, sodium carboxymethyl guar gum, or a combination thereof. The weight ratio between the first and second polymer is 1:10 to 10:1. Also disclosed are processes for preparing the microcapsule and uses of the microcapsules in consumer products.

Silica microcapsules and methods of preparing same

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.

Hydroxyethyl cellulose microcapsules

A microcapsule composition useful in delivering an active material contains a first microcapsule and a second microcapsule. The first microcapsule has a zeta potential of 10 mV or greater, the second microcapsule has a zeta potential of 5 mV or less, and the weight ratio of the first microcapsule and the second microcapsule is between 1:10 and 10:1. Also disclosed are consumer products containing such a microcapsule composition.

Polyurea capsule compositions

Disclosed are microcapsule compositions and their preparation methods. The microcapsule composition has a microcapsule dispersed in an aqueous phase. The microcapsule has a microcapsule core and a microcapsule wall encapsulating the microcapsule core. The microcapsule core contains an active material selected from the group consisting of a fragrance, cosmetic active, malodor counteractant, and combinations thereof. The microcapsule wall is formed of a polymeric network comprising of at least three moieties: (i) a first moiety derived from a chitosan, (ii) a second moiety derived from a polyisocyanate, and (iii) a third moiety derived from a polyphenol. Also disclosed are consumer products contain such a microcapsule composition.

Microcapsule compositions

Disclosed are microcapsule compositions having microcapsules suspended in an aqueous phase. Each of the microcapsules has a single core-shell structure and contains a microcapsule core and a microcapsule wall encapsulating the microcapsule core. The microcapsule compositions include a pectin. Also disclosed are preparation methods and use of the microcapsule compositions in consumer products.

Microcapsule compositions prepared from polysaccharides

Disclosed are stable microcapsule compositions each containing a microcapsule dispersed in an aqueous phase and a stabilizing agent. The microcapsule compositions are stable for at least 4 weeks when storing at 45° C., and the microcapsule composition is considered stable when (i) the composition has a viscosity of 3000 cP or less and (ii) 20% or less water by volume of the composition is separated from the composition. Also disclosed are consumer products having such a stable microcapsule composition.

Stable microcapsule compositions

Disclosed are stable microcapsule compositions each containing a microcapsule dispersed in an aqueous phase and a stabilizing agent. The microcapsule compositions are stable for at least 4 weeks when storing at 45&#xb0; C., and the microcapsule composition is considered stable when (i) the composition has a viscosity of 3000 cP or less and (ii) 20% or less water by volume of the composition is separated from the composition. Also disclosed are consumer products having such a stable microcapsule composition.

A reloadable microcapsule contains a microcapsule core and a microcapsule wall encapsulating the microcapsule core. The microcapsule core contains a hydrophobic core solvent and a hydrophilic core solvent, and the microcapsule wall, formed of an encapsulating polymer, is permeable to the hydrophilic core solvent. Also disclosed are methods of preparing the reloadable microcapsule and consumer products having the microcapsules.

Reloadable microcapsules

Polyurea capsules that encapsulate active materials in polymeric walls resulting from the polymerization of an aromatic or aliphatic polyisocyanate and a cross-linking agent are provided as are consumer products containing said polyurea capsules and for methods for producing such capsules.

Polyurea capsules prepared with a polyisocyanate and cross-linking agent

This invention is a hydrogel capsule with a fragrance encapsulated therein during the polymerization process. The hydrogel capsule is of use in fabric care or personal care formulations.

Hydrogel capsules and process for preparing the same

Purified polyurea capsules that encapsulate active materials for use in personal care, fine fragrance, or deodorant products are provided as are methods for producing the same.

Purified polyurea capsules, methods of preparation, and products containing the same

A microcapsule composition is provided, which contains a polyurea or polyurethane microcapsule, an alkylnaphthalenesulfonate formaldehyde condensate, and polyvinylpyrrolidone. Also disclosed is a process of preparing the microcapsule composition and a consumer product having such a microcapsule composition.

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Edison, NJ, United States of America

Li Xu