Microencapsulation process

Details Microencapsulation process Microencapsulation process

1980-10-06

1983-06-21

Lovering, Richard D.

Coating processes

Particles, flakes, or granules coated or encapsulated

Solid encapsulation process utilizing an emulsion or...

424 32, 424 33, 424 35, 424 38, 424DIG14, 4272133, 264 41, 264 43, 264 46, B01J 1302, A61K 950

Patent

active

043893309

ABSTRACT:
Microcapsules laden with an active agent are prepared by a method comprising: (a) dissolving or dispersing an active agent in a solvent and dissolving a wall forming material in said solvent; (b) dispersing said solvent containing said active agent and wall forming material in a continuous-phase processing medium; (c) evaporating a portion of said solvent from said dispersion of step (b), thereby forming microcapsules containing said active agent in the suspension; and (d) extracting the remainder of the solvent from said microcapsules.

REFERENCES:
patent: 3576758 (1971-04-01), Emrick
patent: 3657144 (1972-04-01), Yoshida
patent: 3691090 (1972-09-01), Kitajima et al.
patent: 3773919 (1973-11-01), Boswell et al.

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