Drug – bio-affecting and body treating compositions – Identification or warning feature – Taste or smell or chemical irritation to the eye – nose – or...
Patent
1979-07-09
1981-02-24
Rose, Shep K.
Drug, bio-affecting and body treating compositions
Identification or warning feature
Taste or smell or chemical irritation to the eye, nose, or...
424 22, 424 82, A61K 922, A61K 926, A61K 31115, A61K 31785
Patent
active
042527856
ABSTRACT:
A microporous controlled release composition, comprising at least about 20%, by weight, based on the total weight of the composition, of a solid, low molecular weight urea-formaldehyde resin having a molar ratio of urea to formaldehyde of from about 2:1 to about 3.5:1, and at least one active material contained in and releasable from said resin over a sustained period of time when said resin is in an aqueous medium.
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Hexcel Corporation
Rose Shep K.
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