Microcapsules with acylurea walls

Details Microcapsules with acylurea walls Microcapsules with acylurea walls

B - Operations, Transporting

01

J

B01J 13/16 (2006.01)

Patent

CA 2716917

The invention relates to a method for production of microcapsules with a capsule wall and a capsule core comprising the method steps: a) producing an oil-in-water emulsion with a disperse phase comprising the core material and an oligocar-bodiimide, an aqueous continuous phase and a protective colloid and b) subsequent reaction of one or more di- and/or poly-carboxylic acids and the water-soluble salts thereof with the oligocarbodiimide and microcapsules which may be produced by the above method.

L'invention concerne un procédé de production de microcapsules présentant une paroi de capsule et un noyau de capsule, procédé comprenant les étapes suivantes : a) production d'une émulsion huile dans l'eau, à phase dispersée, qui comprend le matériau du noyau et un oligocarbodiimide, une phase aqueuse continue et un colloïde protecteur, et b) réaction subséquente d'un ou de plusieurs acides di- et/ou poly-carboxyliques et/ou de leurs sels hydrosolubles avec l'oligocarbodiimide. L'invention concerne également les microcapsules obtenues suivant le procédé précité.

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