Preparation of aqueous alcoholic dispersions of pH sensitive pol

Details Preparation of aqueous alcoholic dispersions of pH sensitive pol Preparation of aqueous alcoholic dispersions of pH sensitive pol

1981-08-12

1983-03-22

Phillips, Delbert R.

Drug, bio-affecting and body treating compositions

Solid synthetic organic polymer as designated organic active...

Polymer from ethylenic monomers only

424 32, 424 33, 424 34, 424 35, A61K 958, A61K 956, A61K 932, A61K 930

Patent

active

043775683

ABSTRACT:
An enteric coating medium for solid medicinal dosage units is prepared by precipitation of a pH sensitive polymer from an alcoholic solution of such a polymer and a plasticizing agent to produce a suspension of fine particles of a mixture of polymer and plasticizing agent.

REFERENCES:
patent: 3449489 (1969-06-01), Gaunt
patent: 3935326 (1976-01-01), Groppenbacher et al.
patent: 4287221 (1981-09-01), Tonedachi et al.
Chatfield, H. W. Varnish Constituents London, Leonard Hill Limited, 1953, pp. 513, 519, 520, 524 and 526.
Derwent Abstract 39143C/22; 69606A/39; 00460X/01; 20605C/12.

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