Drug – bio-affecting and body treating compositions – Solid synthetic organic polymer as designated organic active... – Polymer from ethylenic monomers only
Patent
1977-09-02
1980-04-01
Waddell, Frederick E.
Drug, bio-affecting and body treating compositions
Solid synthetic organic polymer as designated organic active...
Polymer from ethylenic monomers only
424 16, 424 19, 424 22, 424 31, 424 32, 424 33, 424 35, A61K 924, A61K 900, A61K 922, A61K 932
Patent
active
041961870
ABSTRACT:
Pellets adapted to be orally administered to ruminants are disclosed. The pellets have a core comprising a nutrient and/or medicament, of which the pH is raised to a predetermined level by the addition of a basic substance. A coating which protects the core in the environment of the rumen is also provided to allow utilization of the core in the abomasum and/or intestine. The coating comprises a polymeric matrix which is resistant to the mildly acidic environment of the rumen and may include a hydrophobic substance dispersed throughout the continuous matrix. The continuity of the polymerix matrix is destroyed in the more acidic environment of the abomasum.
REFERENCES:
patent: 3577512 (1971-05-01), Shepherd et al.
patent: 3829564 (1974-08-01), Merry et al.
patent: 3832252 (1974-08-01), Higuchi et al.
patent: 3880990 (1975-04-01), Bauer et al.
patent: 3917813 (1975-11-01), Pedersen
Ardell Richard E.
Dannelly Clarence C.
Eastman Kodak Company
Reece III Daniel B.
Stevens John F.
Waddell Frederick E.
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