Encapsulation of oleophilic substances and compositions produced thereby
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United States of America Patent
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Aug 17, 1999
Issued Date -
N/A
app pub date -
May 24, 1995
filing date -
Jul 1, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Multiple micro-encapsulations of a high concentration oleophilic substance using heat to set the primary particle renders the composition suitable for the production of free-flowing powders or beadlets. Microencapsulation involves forming an emulsion out of the oleophilic substance and a polymer, and then use heat setting and/or cross-linking the polymer encapsulates the oleophilic composition. This process is then repeated with a second polymer or third polymer, and with or without cross-linked via the same or different mechanism to further protect the oleophilic substance.
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