Controlled release formulations coated with aqueous dispersions of acrylic polymers
US5580578A · kind A · utility
421Cited by
44References
56Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 27, 1993 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Jul 27, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/5078
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A stable solid controlled release formulation having a coating derived from an aqueous dispersion of a hydrophobic acrylic polymer includes a substrate including an active agent selected from the group consisting of a systemically active therapeutic agent, a locally active therapeutic agent, a disinfecting and sanitizing agent, a cleansing agent, a fragrance agent and a fertilizing agent, overcoated with an aqueous dispersion of the plasticized water-insoluble acrylic polymer. The formulation provides a stable dissolution of the active agent which is unchanged after exposure to accelerated storage conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.