Controlled release matrix system using cellulose acetate/polyvin

Details Controlled release matrix system using cellulose acetate/polyvin Controlled release matrix system using cellulose acetate/polyvin

1993-12-15

1996-06-04

Webman, Edward J.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Matrices

424488, 424499, 424501, 424468, 424408, 424409, 424443, 428402, A01N 2512, A01N 2510, A01N 2534, A61K 914, A61K 922, A61K 970, A61K 4732, A61K 4738

Patent

active

055230954

ABSTRACT:
This invention relates to a controlled release matrix system comprising a homogenous mixture of polyvinylpyrrolidone, cellulose acetate having a degree of substitution for acetyl of from about 0.5 to 3.0, and a water-soluble active ingredient.

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Derwent Abstract, JP 58093733, Jun. 1983.

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