| Different functionality may be introduced by using comonomers such as methacrylic acid or hydroxy ethyl acrylate. |
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| The release data shows that, as the concentration of methacrylic acid was increased, swelling increased resulting in increased release of the drug. |
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| These are usually based on copolymers of vinyl acetate with vinyl chloride, acrylic or methacrylic esters or styrene, produced by addition polymerisation. |
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| Recently, zinc salts of methacrylic acid have been demonstrated to be a viable alternative to conventional zinc activators. |
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| The second monomer unit is selected from the group consisting of C1-3 alkyl esters of acrylic acid, methacrylic acid and crotonic acid. |
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| These lenses were made from silicone and methacrylic acid polymers. |
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