Microcapsules having activated release of core material therein

Details Microcapsules having activated release of core material therein Microcapsules having activated release of core material therein

A - Human Necessities

01

N

A01N 25/28 (2006.01) A01N 37/18 (2006.01) A01P 13/00 (2006.01) C08G 18/82 (2006.01)

Patent

CA 2570254

The present invention is directed to microcapsules having polymeric shells that possess blocking groups (e.g., amine-blocking groups), the removal or cleavage of which act to initiate release of the core material therein, or increase the rate at which such core material is released. The present invention is further directed to the formulation of said microcapsules in aqueous dispersions, to the preparation of said microcapsules, and to the use of such microcapsules and dispersions thereof.

L'invention concerne des microcapsules comprenant des coques polymères qui possèdent des groupes de blocage (par exemple, des groupes de blocage d'amine) dont la suppression ou le clivage lance la libération d'un matériau noyau dans lesdites microcapsules ou augmente la vitesse à laquelle ce matériau noyau est libéré. L'invention concerne la formulation de ces microcapsules dans des dispersions aqueuses, la préparation desdites microcapsules, des dispersions de celles-ci et leur utilisation.

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