Drug – bio-affecting and body treating compositions – Solid synthetic organic polymer as designated organic active... – Polymer from ethylenic monomers only
Patent
1979-02-26
1980-04-22
Rose, Shep K.
Drug, bio-affecting and body treating compositions
Solid synthetic organic polymer as designated organic active...
Polymer from ethylenic monomers only
424 19, 424 21, 424 22, 424 81, A61K 3174, A61K 932
Patent
active
041995619
ABSTRACT:
An imidazoline modified styrene-acrylonitrile polymer composition which is substantially insoluble in aqueous media at about pH 6 or more but swellable or soluble at pH 3 or less is employed as a coating for nutrient or therapeutic substances for administration to ruminants. The substances thus are rendered resistant to attack and breakdown in the rumen yet remain susceptible to release and digestion within the abomasum or small intestine of the animal.
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Chiu Thomas T.
Owen Peter W.
Roth Harold H.
Brookens R. G.
Davey M. B.
Rose Shep K.
Schilling E. E.
The Dow Chemical Company
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