Systems for the controlled release of macromolecules
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United States of America Patent
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Jul 5, 1983
Issued Date -
N/A
app pub date -
Aug 10, 1981
filing date -
Jan 5, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Delivery systems manufactured in the form of polymeric compositions for the controlled delivery of macromolecules to environments of use are disclosed. The systems are characterized as two-phase compositions comprising a phase formed of an insoluble polymeric matrix having limited water sorptivity containing in admixture therein an interpenetrating phase formed of a particulate hydrophilic water swellable, biologically active macromolecular material.
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