Composite core coated microparticles and process of preparing sa

Details Composite core coated microparticles and process of preparing sa Composite core coated microparticles and process of preparing sa

1984-02-06

1986-02-04

Kittle, John E.

Coating processes

Fraud or tamper detecting

424 31, 424 35, 427213, 42840224, A61K 930, A61K 950, A61K 958, B05D 702

Patent

active

045685592

ABSTRACT:
A process for preparing coated microparticles, which process comprises preparing a solvent solution of an active ingredient to be encapsulated and a film-forming polymer, removing the solvent to provide a dry, composite, uniform admixture of the active ingredient and the polymer material, reducing the composite admixture to a defined smaller particle size distribution, coating the reduced composite core particles in a fluidized bed, with a uniform defined wall thickness of the same or substantially the same film-forming polymer material to provide composite core coated microparticles.

REFERENCES:
patent: 3089824 (1963-05-01), Wurster et al.
patent: 3148123 (1964-09-01), Werner
patent: 3207824 (1965-09-01), Wurster et al.
patent: 3714065 (1973-01-01), Kitajima et al.
patent: 3882228 (1975-05-01), Boncey et al.
patent: 3992558 (1976-11-01), Smith-Johannsen et al.

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