Composition for feeding ruminants
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United States of America Patent
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Feb 16, 1993
Issued Date -
N/A
app pub date -
Jun 22, 1990
filing date -
Jun 7, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A composition which is stable in a medium in which the pH is greater than or equal to 5.5 and which permits the release of an active substance in a medium in which the pH is less than or equal to 3.5, comprising the active substance, which contains inclusions of, or which is completely or partially covered by, a pH sensitive material whose extent and/or rate of swelling is greater in an acidic medium than in a neutral medium, and a coating of a hydrophobic layer.
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