Inert cross-linked copolymer support, its preparation process and its use for producing delayed action medicaments
US4590068A · kind A · utility
31Cited by
7References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 22, 1983 |
| Grant date | May 20, 1986 |
| Priority date | — |
| Expiry date | Aug 22, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2982
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Inert cross-linked copolymer able to absorb and then progressively release a pharmaceutically active substance, wherein it is constituted by a powder of a cross-linked copolymer comprising PA0 30 to 80% by weight of monounsaturated alkyl acrylate and/or methacrylate; PA0 5 to 68% by weight of acrylic and/or methacrylic acid; and PA0 2 to 15% by weight of bifunctional or trifunctional acrylate and/or methacrylate polymerized in accordance with free radical polymerization mechanisms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.