| abstract |
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. |