Inert cross-linked copolymer support, its preparation process and its use for producing delayed action medicaments
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United States of America Patent
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May 20, 1986
Issued Date -
N/A
app pub date -
Aug 22, 1983
filing date -
Jun 30, 1980
priority date (Note) -
Expired
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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 30 to 80% by weight of monounsaturated alkyl acrylate and/or methacrylate; 5 to 68% by weight of acrylic and/or methacrylic acid; and 2 to 15% by weight of bifunctional or trifunctional acrylate and/or methacrylate polymerized in accordance with free radical polymerization mechanisms.
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