Underwater or under-hydrocarbon pelletizing of biologically-active-compound-containing melts
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United States of America Patent
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Oct 14, 2003
Grant Date -
N/A
app pub date -
Aug 23, 2000
filing date -
Sep 10, 1999
priority date (Note) -
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Abstract
A process for producing pellets comprising biologically active substances in which the biologically active substances are homogeneously dispersed in a matrix based on at least one thermoplastic polymer, which polymer has in aqueous medium a pH-dependent solubility, by homogeneous mixing of the starting materials in the melt and subsequent extrusion and shaping, which comprises the shaping being performed in a cooling medium in which the pellets are not soluble or dispersible.
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