Controlled release preparation for bioactive substances

Details Controlled release preparation for bioactive substances Controlled release preparation for bioactive substances

1994-07-26

1996-07-02

Nutter, Nathan M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

424 7808, 424 7831, 424422, 424423, 424425, 424487, 424488, 523105, 523113, 524 27, A61K 4700

Patent

active

055323057

ABSTRACT:
To provide a base suitable for a controlled release preparation and the controlled release preparation. A bioactive substance(s) is introduced in a poly-ion complex of hyaluronic acid and a cationic polyacrylic acid derivative(s).

REFERENCES:
patent: 4767463 (1988-08-01), Brode et al.
patent: 5143724 (1992-09-01), Leschiner et al.
patent: 5334640 (1994-08-01), Desai et al.

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