Process for the production of microcapsules

Details Process for the production of microcapsules Process for the production of microcapsules

1981-10-13

1984-01-31

Lovering, Richard D.

Coating processes

Particles, flakes, or granules coated or encapsulated

Solid encapsulation process utilizing an emulsion or...

71 6411, 71DIG1, 252350, 252522A, 252610, 264 47, 42840221, 42840224, 523176, B01J 1302, B05D 700

Patent

active

044289839

ABSTRACT:
A process for encapsulating products in a polymer by interfacial polymerization, in which a stabilized dispersion of droplets of a first liquid which is to be encapsulated or a stabilized dispersion of solid particles which are to be encapsulated is formed in a continuous phase of a second liquid, and wherein one of the two capsule wall-forming reaction components is present in free form while the other of the two capsule wall-forming reaction components is present in reversibly blocked form, both reaction components are present in the first or second liquid without reacting with one another and the reaction component which is present in reversibly blocked form is deblocked by means of water present in the second or first liquid and then reacts with the reaction component present in free form to form a polymeric capsule wall, the droplets of the first liquid or the solid particles being encapsulated in small capsules consisting of polymeric material.

REFERENCES:
patent: 3577515 (1971-05-01), Vandegaer
patent: 3796669 (1974-03-01), Kiritani et al.
patent: 3981821 (1976-09-01), Kiritani et al.
patent: 4309213 (1982-01-01), Graber et al.

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