Encapsulation process using isocyanate moieties

Details Encapsulation process using isocyanate moieties Encapsulation process using isocyanate moieties

B - Operations, Transporting

01

J

B01J 13/16 (2006.01) A01N 25/28 (2006.01)

Patent

CA 2311192

The invention provides a method of forming microcapsules or particles of a matrix which comprises dispersing a first liquid in a second, immiscible or partially miscible liquid that forms a continuous phase, one liquid containing reactants bearing (a) isocyanate moieties and (b) anhydride moieties, glycidyl moieties or electrophilic moieties bearing base-susceptible leaving groups and the other liquid containing a reactant that bears reactive groups that will react with the reactants in the said one liquid to form a membrane. The microcapsules or particles can encapsulate material that will undergo slow release. The invention also extends to the formed microcapsules or particles.

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