Polymer blends having reverse phase morphology for controlled de

Details Polymer blends having reverse phase morphology for controlled de Polymer blends having reverse phase morphology for controlled de

1987-08-20

1989-01-03

Dixon, Jr., William R.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Specially adapted for ruminant animal

106196, 106178, 424488, 424457, 514781, A61K 926, C08L 108, C09S 304

Patent

active

047956410

ABSTRACT:
Disclosed are polymer blends containing a minor amount of cellulose acetate and a major amount of cellulose acetate phthalate, cellulose acetate trimellitate or cellulose acetate succinate. The blends have reverse phase morphology, that is, the minor component forms a continuous phase. The blends are useful for zero-order controlled delivery of bioactive agents such as pharmaceutical and agricultural chemicals.

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