Compositions for controlled availability of medically useful org

Details Compositions for controlled availability of medically useful org Compositions for controlled availability of medically useful org

1977-11-17

1979-05-08

Turner, V. D.

Drug, bio-affecting and body treating compositions

Solid synthetic organic polymer as designated organic active...

Polymer from ethylenic monomers only

424 22, 424219, A61K 3174, A01N 1700

Patent

active

041536827

ABSTRACT:
This invention relates to medically useful compositions, each comprising in intimate physical combination: (a) one or more of certain organophsophorus compounds, (b) porous solid particles of a polyvinylic resin, and (c) one or more of certain styrene/maleic anhydride copolymers, each of said compositions being characterized by the property of protecting the organophosphorus compound from adverse effects of materials which contact said composition, yet releasing the organophosphorus compound at a controlled rate to an aqueous liquid in contact with said composition.

REFERENCES:
patent: 2897121 (1959-07-01), Wagner
patent: 3344021 (1967-09-01), Menn et al.
patent: 3398225 (1968-08-01), Bellin

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