Time-release delivery matrix composition and corresponding contr

Details Time-release delivery matrix composition and corresponding contr Time-release delivery matrix composition and corresponding contr

1995-02-16

1997-10-14

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Matrices

424497, 424473, 424469, A61K 914

Patent

active

056769725

ABSTRACT:
A composition is provided for use as a matrix for controlled-release compositions. Such compositions utilize an active ingredient dispersed in a matrix. Active ingredients include, for example, pharmaceuticals and agricultural agents. The matrix is a blend of a poly(hydroxyethyl) methacrylate, polyethylene glycol and a time-release extending agent which is a low molecular weight polymer having hydrophilic and hydrophobic side groups, such as diblock or triblock poly(ethylene oxide propyleneoxide).

REFERENCES:
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patent: 3963685 (1976-06-01), Abrahams
patent: 4177056 (1979-12-01), Mueller et al.
patent: 4272518 (1981-06-01), Moro et al.
patent: 4563184 (1986-01-01), Korol
patent: 4666702 (1987-05-01), Junginger
patent: 4747845 (1988-05-01), Korol
patent: 4857334 (1989-08-01), Korol et al.
patent: 4997656 (1991-03-01), Shikinami et al.

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