Encapsulated active materials and method for preparing same

Details Encapsulated active materials and method for preparing same Encapsulated active materials and method for preparing same

1994-09-26

1997-02-11

Nutter, Nathan M.

Plastic and nonmetallic article shaping or treating: processes

Encapsulating normally liquid material

Liquid encapsulation utilizing an emulsion or dispersion to...

264 44, 264 46, 264 47, B01J 1302, B01J 1320, B01J 1322

Patent

active

056017618

ABSTRACT:
An active material encapsulated in a coating material immiscible therewith is contacted with a solvent that dissolves residual active material on the surface of the coating material without dissolving the coating material. The resultant encapsulated material has improved stability as compared to the material not contacted with solvent.

REFERENCES:
patent: 3015128 (1962-01-01), Somerville
patent: 3310612 (1967-03-01), Somerville
patent: 4675140 (1987-06-01), Sparks et al.
patent: 4764317 (1988-08-01), Anderson et al.
"Scale-up Problems Associated with Microencapsulated Systems" by William W.Harlowe Jr. Presentation at The Arden House Conference, Feb. 13-18 1983.
"A New Method for Coating Glass Beads for Use in Gas Chromatography of Chloropromazine and Its Metabolites" by Donald E. Johnson et al.-listed in Journal of G. C. Oct. 1965 pp. 345-347.

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