| 摘要 |
A new composition of matter comprising an acrylic silicate of the type having the general formula: <IMAGE> wherein R=alkyl, aryl or H, R'=R or OR Y=alkyl, vinyl, aryl, or fluoroalkyl <IMAGE> A=Y or H; and B=oxyalkyl, oxyaryl, oxyfluoroalkyl, oxyalkylacrylate, alkyl esters, aryl esters, fluoroalkyl esters, or acrylic esters. This composition may be reacted with polymerizable acrylic esters to form optically transparent, machineable polymers useful in various applications, including use as gas-permeable hard corneal contact lenses.
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