Plastic and nonmetallic article shaping or treating: processes – Encapsulating normally liquid material – Liquid encapsulation utilizing an emulsion or dispersion to...
Patent
1989-12-27
1991-11-19
Stoll, Robert L.
Plastic and nonmetallic article shaping or treating: processes
Encapsulating normally liquid material
Liquid encapsulation utilizing an emulsion or dispersion to...
42840221, 42840222, 424462, 424457, 42721332, 514963, B01T 1302
Patent
active
050664360
ABSTRACT:
A process for microencapsulating bioactive substances in biocompatible polymers according to the phase-separation principle, wherein an excess of an ethyl or isopropyl ester of a straight-chain fatty acid having 12-18 carbon atoms is used as the hardening liquid, and the pharmaceutical compositions containing the microcapsules prepared by this process. Isopropyl myristate and isopropyl palmitate are preferred hardening liquids.
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Groenendaal Jan W.
Komen Joseph
Bhat Nina
Burns Robert E.
Gist-Brocades N.V.
Lobato Emmanuel J.
Stoll Robert L.
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